Current weather · Sep 24, 3:19 PM GMT+1

Purley, United Kingdom

67°

Partly cloudyFeels like 67° · Humidity 55%MET Norway forecast for this hourForecast by MET Norway
High
67°
Low
55°
Precip today
0.00 in
Sunrise
6:50 AM
Sunset
6:54 PM

Hour by hour

MET Norway, hourly to about 60 hours, then every six hours

Scroll sideways for more hours. Pick an hour for every number.

Every hour as a table48 hours
TimeWeatherTemperatureFeels likeDew pointHumidityChanceAmountSnowDirWindGustSky coverThunderPressureVisibilityCeiling
Thu 3 PM67°67°51°55%SSW6 mph92%30.24 inHg
Thu 4 PM67°67°51°55%S6 mph97%30.22 inHg
Thu 5 PM67°67°51°58%S6 mph96%30.20 inHg
Thu 6 PM65°65°53°64%S6 mph97%30.19 inHg
Thu 7 PM61°61°53°75%S5 mph98%30.20 inHg
Thu 8 PM59°59°54°84%SSE6 mph98%30.19 inHg
Thu 9 PM57°57°54°88%SSE6 mph96%30.20 inHg
Thu 10 PM56°55°53°91%SSE6 mph63%30.19 inHg
Thu 11 PM55°54°53°91%SSE6 mph45%30.18 inHg
Fri 12 AM55°53°52°91%SSE6 mph1%30.17 inHg
Fri 1 AM55°54°53°92%SSE6 mph0%30.15 inHg
Fri 2 AM55°54°53°93%SSE6 mph0%30.14 inHg
Fri 3 AM55°54°54°93%SSE6 mph0%30.13 inHg
Fri 4 AM55°54°53°94%SSE5 mph1%30.11 inHg
Fri 5 AM55°54°54°94%SSE5 mph4%30.10 inHg
Fri 6 AM55°54°53°95%SSE4 mph3%30.10 inHg
Fri 7 AM54°54°53°96%SE2 mph0%30.10 inHg
Fri 8 AM56°56°55°97%ESE2 mph0%30.10 inHg
Fri 9 AM61°61°58°90%E2 mph0%30.10 inHg
Fri 10 AM65°65°59°80%ESE4 mph0%30.09 inHg
Fri 11 AM68°68°59°73%ENE3 mph0%30.09 inHg
Fri 12 PM70°70°60°68%NNE2 mph1%30.08 inHg
Fri 1 PM72°72°60°65%ESE4 mph2%30.06 inHg
Fri 2 PM74°74°59°58%SW5 mph25%30.05 inHg
Fri 3 PM75°75°58°55%SW6 mph23%30.03 inHg
Fri 4 PM75°75°57°53%W6 mph73%30.03 inHg
Fri 5 PM72°72°57°59%NW8 mph99%30.04 inHg
Fri 6 PM70°70°57°64%NW8 mph99%30.04 inHg
Fri 7 PM66°66°56°70%NW7 mph91%30.06 inHg
Fri 8 PM64°64°56°74%NW6 mph84%30.07 inHg
Fri 9 PM64°64°56°75%NW5 mph80%30.08 inHg
Fri 10 PM63°63°55°76%NW7 mph83%30.09 inHg
Fri 11 PM61°61°55°81%NNW9 mph77%30.09 inHg
Sat 12 AM59°57°54°86%NNW9 mph94%30.10 inHg
Sat 1 AM58°56°53°84%NNW8 mph98%30.11 inHg
Sat 2 AM58°56°51°80%NNW9 mph98%30.12 inHg
Sat 3 AM58°56°50°75%NNW9 mph100%30.13 inHg
Sat 4 AM57°55°49°74%NNW8 mph98%30.13 inHg
Sat 5 AM56°54°49°77%NNW7 mph90%30.14 inHg
Sat 6 AM54°53°48°79%NNW6 mph100%30.15 inHg
Sat 7 AM54°53°47°78%NW5 mph100%30.16 inHg
Sat 8 AM54°53°47°77%NW6 mph82%30.18 inHg
Sat 9 AM56°55°48°73%NW5 mph61%30.20 inHg
Sat 10 AM59°58°47°66%NNW5 mph99%30.20 inHg
Sat 11 AM61°61°46°58%NNW5 mph100%30.21 inHg
Sat 12 PM63°63°44°50%NW4 mph96%30.21 inHg
Sat 1 PM64°64°43°46%NW3 mph72%30.20 inHg
Sat 2 PM66°66°42°42%WNW2 mph93%30.19 inHg

The next 16 days

MET Norway forecast updated Sep 24, 2:17 PM GMT+1 to day 10, the mean of GFS, GEFS, ECMWF, ECMWF AI to day 16
  1. TodaySep 2467°55°Partly cloudywind 6 mph
  2. FriSep 2575°56°Partly cloudywind 9 mph
  3. SatSep 2667°51°Cloudywind 9 mph
  4. SunSep 2770°60°Cloudywind 10 mph
  5. MonSep 2867°61°Cloudy0.04 inwind 8 mph
  6. TueSep 2974°68°Cloudy0.06 inwind 12 mph
  7. WedSep 3076°64°Light rain showers0.15 inwind 11 mph
  8. ThuOct 165°56°Rain0.35 inwind 8 mph
  9. FriOct 263°52°Heavy rain0.30 inwind 16 mph
  10. SatOct 361°49°Mostly clearwind 11 mph
  11. SunOct 4~60°49°Model mean0.03 in
  12. MonOct 5~64°53°Model mean0.01 in
  13. TueOct 6~63°52°Model mean0.06 in
  14. WedOct 7~63°53°Model mean0.03 in
  15. ThuOct 8~62°53°Model mean0.19 in
  16. FriOct 9~73°57°Model mean

Right now

MET Norway forecast for this hour
  • Feels like67°
  • WindSSW 6 mph
  • Humidity55%
  • Dew point51°
  • Pressure30.24 inHg
  • UV index2 · Lowclear-sky peak 2 today
  • Sunrise and sunsetSunrise · Sunset
  • Moonrise6:04 PMMoonset 3:56 AM
  • Moon phaseWaxing gibbous95% lit

The models, side by side

GFS Sep 24, 7:00 AM GMT+1 · GEFS Sep 24, 7:00 AM GMT+1 · ECMWF Sep 24, 1:00 AM GMT+1 · ECMWF AI Sep 24, 1:00 AM GMT+1

Each line is one model’s own forecast at its own grid cell: three kilometers for HRRR, a quarter of a degree for the global models, which can sit a few hundred meters above or below the town. Where they agree the forecast is settled; where they part is where it is not.

41°59°77°FriSatSunMonTueWedThu

DayNWS gridGFSGEFSECMWFECMWF AI
Today Sep 2467° 55°69° 51°69° 53°~68° 56°~68° 49°
Fri Sep 2575° 56°76° 53°76° 56°74° 54°~75° 53°
Sat Sep 2667° 51°68° 54°68° 56°66° 55°~65° 52°
Sun Sep 2770° 60°70° 52°70° 54°70° 52°~66° 49°0.13 in
Mon Sep 2867° 61°0.04 in61° 55°0.26 in67° 57°0.07 in63° 58°0.07 in~67° 60°0.14 in
Tue Sep 2974° 68°0.06 in68° 58°0.09 in71° 58°0.09 in76° 60°0.04 in~76° 55°0.03 in
Wed Sep 3076° 64°0.15 in67° 54°0.09 in68° 61°0.20 in~75° 63°0.23 in~71° 65°0.35 in
Thu Oct 165° 56°0.35 in67° 53°66° 57°0.09 in~65° 59°0.44 in~65° 54°0.02 in
Fri Oct 263° 52°0.30 in68° 55°65° 55°0.06 in~63° 53°0.31 in~63° 49°0.02 in
Sat Oct 361° 49°67° 55°0.09 in66° 55°0.06 in~61° 56°~60° 44°
Sun Oct 4~65° 51°~56° 55°~58° 48°0.07 in~58° 44°0.04 in
Mon Oct 5~66° 51°~65° 55°~61° 52°0.02 in
Tue Oct 6~65° 50°~67° 53°~56° 53°0.17 in
Wed Oct 7~61° 52°0.02 in~68° 55°~59° 51°0.06 in
Thu Oct 8~70° 54°~59° 57°0.35 in~57° 49°0.22 in
Fri Oct 9~73° 57°~50° 50°~52° 52°

A ~ marks a high or low read from six-hourly steps, which miss the true extreme by a degree or two.

ECMWF ensemble meteogram

ECMWF ensemble meteogram for this place: box plots of cloud cover, precipitation, wind speed and temperature from the 51 ensemble members for ten days.
Rendered by ECMWF from its 51-member ensemble, in metric units: each box spans the middle half of the members, the whiskers the rest, the line the control run. A forecast, not an observation. © ECMWF, CC BY 4.0.

Health and activities

Rules of thumb over the next 24 hours of forecast, the warnings in force, the station’s report, air quality and pollen

None of these is a measurement. Each is a rating of the forecast ahead, and of what is happening at the point right now, against what the activity or the ailment is known to mind, and each names the figure that decided it. An ailment or a pest is rated as a risk, low to extreme; an activity, a chore or a journey as a condition, poor to ideal.

Each rating says which span it is for: the rest of today’s daylight, tonight, or the next 24 hours.

Health

  • Arthritisnext 24 hVery highpressure swing
  • Sinus pressurenext 24 hHighpressure swing
  • Common coldtodayLowmild
  • FlutodayLowmild
  • Migrainenext 24 hModeratepressure swing
  • Asthmanext 24 hLowclean air
  • Heat stresstodayLowmild
  • SunburntodayLowweak sun
  • Frostbitenext 24 hLowmild
  • SleepingtonightIdealcool, quiet night

Outdoors

  • RunningtodayIdealfine conditions
  • HikingtodayIdealfine conditions
  • BikingtodayIdealfine conditions
  • GolftodayIdealfine conditions
  • FishingtodayVery goodpressure swing
  • Boating and paddlingtodayIdealfine conditions
  • Beach and pooltodayFairovercast
  • CampingtonightIdealfine conditions
  • StargazingtonightPoormostly cloudy

Travel

  • Air travelnext 24 hIdealclear skies
  • Drivingnext 24 hIdealclear roads

Home and garden

  • Lawn mowingtodayIdealfine conditions
  • GardeningtodayIdealfine conditions
  • Outdoor entertainingtodayIdealfine conditions
  • Drying laundry outsidetodayGoodlittle sun
  • Painting and outdoor projectstodayIdealfine conditions
  • FrosttonightLowmild

Pests

  • MosquitoestodayHighwarm
  • TickstodayHighwarm
  • Indoor pestsnext 24 hLowmild
  • Outdoor peststodayModeratewarm

Stargazing

Worked out from the NWS hourly forecast and the sun and moon

Tonight has no dark, clear hour without a bright moon in this forecast. Rated fair.

Night ofRatingDarkClear hoursClear and moonlessMoon litTransparency (est.)DewStrongest wind
ThursdayFair8:47 PM to 4:58 AM5 of 8None96%Poor8 h6 mph
FridayPoor8:44 PM to 5:00 AM0 of 8None99%9 mph
SaturdayPoor8:42 PM to 5:02 AM0 of 8None100%1 h6 mph
SundayPoor8:39 PM to 5:04 AM0 of 8None98%4 h8 mph
MondayPoor8:37 PM to 5:06 AM0 of 8None95%4 h7 mph
TuesdayPoor8:34 PM to 5:08 AM0 of 8None89%10 mph
WednesdayPoor8:32 PM to 5:09 AM0 of 8None81%4 h8 mph
ThursdayPoor8:30 PM to 5:11 AM0 of 9None72%9 h8 mph
FridayFair8:27 PM to 5:13 AM9 of 91 h from 8:00 PM63%Poor5 h11 mph
SaturdayPoor8:25 PM to 5:15 AM0 of 9None52%4 h4 mph

Dark is the sun 18 degrees below the horizon; where it never gets that low, 12 degrees, marked nautical. Clear is sky cover of 20% or less. A bright moon is one above the horizon with a quarter or more of its disc lit. Transparency is estimated from surface humidity (70% and 85% mark fair and poor) and visibility, since the forecast carries no haze or high cloud moisture; seeing is not rated. Dew is the air within 2 °C of its dew point. Excellent is four or more clear moonless hours with good transparency; good is three; fair is one, or two clear hours.

Spraying and field work

Worked out from the NWS hourly forecast

Hours fit for spraying, and the days dry enough for fieldwork and hay, read from this forecast’s wind, gusts, humidity, temperature and rain.

Spraying windows

  • Thu 3 PM to 8 PM 5 hours, every hour within the rules
  • Fri 10 AM to 12 PM 2 hours, every hour within the rules
  • Fri 1 PM to Sat 12 AM 11 hours, every hour within the rules
  • Sat 2 AM to 1 PM 11 hours, every hour within the rules
  • Sat 7 PM to 10 PM 3 hours, every hour within the rules
  • Sat 11 PM to Sun 1 AM 2 hours, every hour within the rules
  • Sun 1 PM to Mon 1 AM 12 hours, every hour within the rules
  • Mon 7 PM to Tue 1 AM 6 hours, every hour within the rules
Thu6 PM
Fri12 AM6 AM12 PM6 PM
Sat12 AM6 AM12 PM6 PM
Sun12 AM6 AM12 PM6 PM

Good Marginal No

Field days

DayDaytimeChance of rainRainLowest humidityStrongest windDry days in a rowHay drying
FridayDry0.00 in53%8 mph3 d
SaturdayDry0.00 in39%6 mph2 dGood
SundayDry0.01 in58%10 mph1 d
MondayShowers possible0.04 in65%4 mph
TuesdayShowers possible0.06 in64%12 mph
WednesdayShowers possible0.15 in57%11 mph
ThursdayWet0.35 in73%5 mph
FridayWet0.30 in67%16 mph
SaturdayDry0.00 in58%9 mph1 d

Spraying: sustained wind 3 to 10 mph, the range US extension services and most labels give; gusts no more than 15 mph (this page’s limit); delta T (air minus wet-bulb temperature) 2 to 8 °C preferred and 8 to 10 °C marginal, from GRDC guidance, with the wet bulb by Stull’s formula; no hour at a 30% chance of rain or 0.25 mm forecast during the rain-free time. Follow the product label, which overrides all of this. Field days: dry is no daytime hour at a 30% chance and under 1 mm all day, wet is 6 mm (0.25 in) or more; soil moisture is not in the forecast, so ground still wet from earlier rain is not accounted for. Hay drying marks a dry day with humidity down to 50% and a breeze of 5 mph or more.

In words

Written here from the MET Norway forecast
  1. This Afternoon67° · S 6–6 mph

    Partly cloudy. High near 20°C. South wind 9 to 10 km/h.

  2. Tonight55° · SSE 5–6 mph

    Partly cloudy. Low near 13°C. Southsoutheast wind 8 to 10 km/h.

  3. Friday75° · SE 2–8 mph

    Partly cloudy. High near 24°C. Southeast wind 3 to 13 km/h.

  4. Friday Night56° · NNW 6–9 mph

    Partly cloudy. Low near 13°C. Northnorthwest wind 9 to 14 km/h.

  5. Saturday67° · NW 2–6 mph

    Cloudy. High near 19°C. Northwest wind 3 to 9 km/h.

  6. Saturday Night51° · SSE 2–6 mph

    Partly cloudy. Low near 11°C. Southsoutheast wind 3 to 10 km/h.

  7. Sunday70° · SSE 7–10 mph

    Cloudy. High near 21°C. Southsoutheast wind 12 to 16 km/h.

  8. Sunday Night60° · SSW 7–8 mph

    Cloudy. Low near 15°C. Southsouthwest wind 11 to 13 km/h. Precipitation around 0.5 mm.

  9. Monday67° · N 2–4 mph

    Cloudy. High near 19°C. North wind 3 to 7 km/h.

  10. Monday Night61° · E 4–7 mph

    Rain. Low near 16°C. East wind 6 to 12 km/h. Precipitation around 1.8 mm.

  11. Tuesday74° · ESE 10–12 mph

    Cloudy. High near 24°C. Eastsoutheast wind 16 to 19 km/h.

  12. Tuesday Night68° · SE 9–9 mph

    Cloudy. Low near 20°C. Southeast wind 14 to 15 km/h.

  13. Wednesday76° · SE 8–11 mph

    Light rain showers. High near 24°C. Southeast wind 13 to 18 km/h. Precipitation around 0.7 mm.

  14. Wednesday Night64° · S 6–7 mph

    Rain. Low near 18°C. South wind 10 to 12 km/h. Precipitation around 8 mm.

  15. Thursday65° · WSW 2–5 mph

    Rain. High near 18°C. Westsouthwest wind 3 to 8 km/h. Precipitation around 4 mm.

  16. Thursday Night56° · WSW 5–8 mph

    Cloudy. Low near 14°C. Westsouthwest wind 8 to 13 km/h.

  17. Friday63° · S 6–16 mph

    Heavy rain. High near 17°C. South wind 9 to 26 km/h. Precipitation around 8 mm.

  18. Friday Night52° · SW 10–11 mph

    Clear. Low near 11°C. Southwest wind 16 to 17 km/h.

  19. Saturday61° · WSW 9–9 mph

    Mostly clear. High near 16°C. Westsouthwest wind 14 to 15 km/h.

  20. Saturday Night49° · SW 3–4 mph

    Partly cloudy. Low near 9°C. Southwest wind 5 to 6 km/h.

Climate

Climate of Purley: normals, records and every month

Everything else on the grid

MET Norway · 12 elements

The forecast office edits about sixty fields for every cell of its grid. The common ones are above; these are the rest, as the daily extreme, for anyone who needs the mixing height, the fire danger or the swell.

ElementThuFriSatSunMonTueWedThuFriSat
Pressure min30.18 inHg30.03 inHg30.10 inHg29.91 inHg29.91 inHg29.94 inHg29.86 inHg29.86 inHg29.86 inHg30.03 inHg

Sun and moon

DayCivil twilightSunriseSunsetCivil twilightDaylightMoon
Thu6:16 AM6:50 AM6:54 PM7:27 PM12 h 4 min Waxing gibbous · 95% lit
Fri6:18 AM6:51 AM6:52 PM7:25 PM12 h 1 min Waxing gibbous · 98% lit
Sat6:20 AM6:53 AM6:50 PM7:23 PM11 h 57 min Full moon · 100% lit
Sun6:21 AM6:54 AM6:47 PM7:21 PM11 h 53 min Full moon · 99% lit
Mon6:23 AM6:56 AM6:45 PM7:18 PM11 h 49 min Waning gibbous · 96% lit
Tue6:25 AM6:58 AM6:43 PM7:16 PM11 h 45 min Waning gibbous · 91% lit
Wed6:26 AM6:59 AM6:41 PM7:14 PM11 h 42 min Waning gibbous · 84% lit
Thu6:28 AM7:01 AM6:38 PM7:11 PM11 h 37 min Waning gibbous · 76% lit
Fri6:29 AM7:03 AM6:36 PM7:09 PM11 h 33 min Waning gibbous · 66% lit
Sat6:31 AM7:04 AM6:34 PM7:07 PM11 h 30 min Last quarter · 56% lit

Forecast from MET Norway’s Locationforecast (the Norwegian Meteorological Institute, CC BY 4.0), built on the ECMWF model and refined by MET, updated through the day; the written periods are composed here from its hourly data. Global model lines from NOAA’s GFS and ECMWF’s open data where they are ingested. Sun and moon computed here. Place names from GeoNames (CC BY 4.0).

What is here

Seven days
The high, the low, the chance and amount of rain and snow, the wind and the forecaster’s words for each day and night, from the National Weather Service grid for the exact cell your town sits in.
Hour by hour
Temperature, what it feels like, dew point, humidity, chance and amount of precipitation, wind and gusts, sky cover, the chance of thunder, pressure, visibility and ceiling, as a chart and as a table, with nights shaded.
Everything else on the grid
The office edits about sixty fields for every cell. The ones the mainstream forecast pages leave out are here as a daily table: HeatRisk, wet bulb globe temperature, lightning activity, mixing height, transport wind, the fire weather indices, and at the coast the waves and swell.
The discussion
The Area Forecast Discussion the forecaster wrote to explain the forecast, in their own words, with the specialist annexes folded away. Also the office’s hazardous weather outlook.
Beyond the week
The Storm Prediction Center’s severe weather category for each of the next eight days, the Weather Prediction Center’s rainfall forecast to day seven and its winter storm severity, and the Climate Prediction Center’s odds for days six to fourteen, all read at your coordinate.
Against the record
Each forecast day beside the same date at the nearest long-record station: the thirty-year normal and the record high and low with their years, so a forecast high that would break a record says so.
The next 90 days
The forecast as far as the grid, the National Blend and the global models reach, and the calendar after that: the normal and the record for every date, with the Climate Prediction Center’s lean for the weeks, the month and the season drawn over them. No made-up highs for a date three months out.

Common questions

Where does this forecast come from?

From the National Weather Service forecast grid published at api.weather.gov, the same grid the local forecast office edits through the day and the source of every forecast on weather.gov. The written periods, the hourly digest and the forecaster’s discussion are the NWS’s own products, shown as issued. Nothing here is a blend a website made.

How far ahead does it go?

The grid runs seven days ahead, hour by hour for the first days and in three to six hour steps after that. The National Blend of Models carries the days to eleven and the global models to sixteen. Beyond that the page carries the national centers’ outlooks, severe weather to day eight, rainfall to day seven, and the Climate Prediction Center’s odds for the coming weeks, month and season, over a ninety-day calendar of the normal and the record for each date. No forecast has skill day by day past about two weeks, and this page does not print one.

Why is this different from the app on my phone?

Most forecast apps show a blend of models chosen by the company that makes the app. This page shows the forecast the local National Weather Service office issues, edited by the forecasters who will also issue the warnings, and it shows all of it rather than the six numbers that fit on a phone. The discussion explains the reasoning, which no app carries.

What is a place’s address here?

Every town has its own page, such as /forecast/us/oklahoma/oklahoma-city/, and every day at a town has one too. A ZIP code typed into the search goes to the town it belongs to. Any coordinate at all can be looked up, and the page names the nearest town.

What the weather actually was · Open the live radar · Where the data comes from