Forecast by NWS Gray - Portland, ME · grid 69,62

43.7630, -70.3250

The day

NWS forecast grid, daily figures derived from the hourly
High
64°
Low
51°
Chance
76%
Amount
0.06 in
Wind
9 mph
gusts 17 mph
Sky cover
81%
Thunder
13%
  1. Tuesday

    A chance of rain before 9am. Mostly cloudy, with a high near 64. Chance of precipitation is 50%.

  2. Tuesday Night

    A slight chance of rain showers between 11pm and midnight. Mostly cloudy, with a low around 51.

Hour by hour

NWS forecast grid

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

Every hour as a table24 hours
TimeWeatherTemperatureFeels likeDew pointHumidityChanceAmountSnowDirWindGustSky coverThunderPressureVisibilityCeiling
Tue 12 AMLight rain53°53°53°100%76%0.01 inNNE9 mph17 mph92%11%—5 mi
Tue 1 AMLight rain likely53°53°53°100%70%0.01 inNNE8 mph16 mph91%11%—5 mi
Tue 2 AMLight rain likely53°53°53°100%64%0.01 inNNE8 mph16 mph90%13%—5 mi
Tue 3 AMLight rain likely53°53°53°100%63%0.01 inNNE8 mph16 mph89%13%—5 mi
Tue 4 AMLight rain likely52°52°52°100%62%0.01 inNNE9 mph17 mph89%13%—5 mi
Tue 5 AMLight rain likely52°52°52°100%61%0.01 inNNE9 mph17 mph88%13%—5 mi
Tue 6 AMChance of light rain52°52°52°100%47%0.01 inNNE9 mph17 mph86%13%—5 mi
Tue 7 AMChance of light rain52°52°52°100%32%0.01 inN9 mph17 mph84%13%—5 mi
Tue 8 AMSlight chance of light rain53°53°53°100%17%N9 mph17 mph82%4%—10 mi
Tue 9 AM54°54°54°100%14%N9 mph17 mph80%4%—10 mi
Tue 10 AM56°56°56°100%10%N8 mph16 mph79%4%—10 mi
Tue 11 AM58°58°57°96%7%N8 mph16 mph77%4%—10 mi
Tue 12 PM60°60°58°93%6%N7 mph14 mph78%4%—10 mi
Tue 1 PM61°61°58°90%6%N7 mph14 mph80%4%—10 mi
Tue 2 PM62°62°58°87%5%N6 mph12 mph81%—10 mi
Tue 3 PM63°63°58°84%4%N5 mph9 mph79%—10 mi
Tue 4 PM63°63°57°81%3%N5 mph9 mph76%—10 mi
Tue 5 PM62°62°57°84%2%N3 mph7 mph74%—10 mi
Tue 6 PM61°61°57°87%2%N3 mph7 mph74%—10 mi
Tue 7 PM60°60°56°87%2%N2 mph5 mph75%—10 mi
Tue 8 PM59°59°56°90%5%N2 mph5 mph75%—10 mi
Tue 9 PM58°58°56°93%9%N2 mph5 mph75%—10 mi
Tue 10 PM56°56°55°96%12%NNW2 mph5 mph75%—10 mi
Tue 11 PMSlight chance of light rain showers55°55°55°100%15%NNW2 mph5 mph75%—10 mi

Against the record

NOAA GHCN · Portland International Jet (PWM) · 8.4 mi away

Each forecast day against the same calendar date at the nearest long-record station: the 1991 to 2020 normal, and the record high and low with the year they were set.

DayForecastNormalRecord highRecord low
Tue Sep 2964° / 51°65° / 48°85° (1945)27° (1947)

Sun and moon

DayCivil twilightSunriseSunsetCivil twilightDaylightMoon
Tue6:08 AM6:37 AM6:26 PM6:54 PM11 h 49 min Waning gibbous · 90% lit

Forecast from the National Weather Service forecast grid at api.weather.gov, updated by the local office through the day; the written periods and hourly digest are the NWS’s own. Outlooks from the Storm Prediction Center, the Weather Prediction Center and the Climate Prediction Center via NOAA’s map services. Records and normals from NOAA’s Global Historical Climatology Network. 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