Itapemirim, Brazil

1. Fri6 PM74°13 mph
2. 7 PM74°13 mph
3. 8 PM74°14 mph
4. 9 PM74°13 mph
5. 10 PM73°13 mph
6. 11 PM73°15 mph
7. Sat12 AM72°15 mph
8. 1 AM71°15 mph
9. 2 AM70°12 mph
10. 3 AM68°11 mph
11. 4 AM68°9 mph
12. 5 AM67°7 mph
13. 6 AM68°5 mph
14. 7 AM72°4 mph
15. 8 AM77°3 mph
16. 9 AM81°3 mph
17. 10 AM83°5 mph
18. 11 AM85°8 mph
19. 12 PM85°9 mph
20. 1 PM84°10 mph
21. 2 PM84°11 mph
22. 3 PM83°13 mph
23. 4 PM81°13 mph
24. 5 PM78°15 mph
25. 6 PM76°16 mph
26. 7 PM75°16 mph
27. 8 PM75°15 mph
28. 9 PM74°15 mph
29. 10 PM73°16 mph
30. 11 PM72°15 mph
31. Sun12 AM71°12 mph
32. 1 AM70°9 mph
33. 2 AM70°8 mph
34. 3 AM69°7 mph
35. 4 AM69°6 mph
36. 5 AM68°5 mph
37. 6 AM69°4 mph
38. 7 AM71°3 mph
39. 8 AM76°2 mph
40. 9 AM79°3 mph
41. 10 AM82°5 mph
42. 11 AM83°8 mph
43. 12 PM83°8 mph
44. 1 PM83°9 mph
45. 2 PM83°11 mph
46. 3 PM83°12 mph
47. 4 PM81°13 mph
48. 5 PM78°13 mph

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

1. TodaySep 2574°67°Fog—wind 15 mph
2. SatSep 2685°68°Fog—wind 16 mph
3. SunSep 2783°70°Fog—wind 16 mph
4. MonSep 2882°71°Fog—wind 13 mph
5. TueSep 2983°73°Partly cloudy—wind 15 mph
6. WedSep 3090°73°Rain showers—0.05 inwind 13 mph
7. ThuOct 180°70°Rain—0.29 inwind 12 mph
8. FriOct 273°69°Rain—0.60 inwind 8 mph
9. SatOct 378°73°Partly cloudy—0.11 inwind 15 mph
10. SunOct 481°76°Partly cloudy—wind 20 mph
11. MonOct 5~78°73°Model mean0.02 in
12. TueOct 6~79°74°Model mean
13. WedOct 7~79°74°Model mean0.01 in
14. ThuOct 8~77°74°Model mean0.03 in
15. FriOct 9~77°74°Model mean0.01 in
16. SatOct 10~75°72°Model mean0.02 in

• Feels like74°
• WindENE 13 mph
• Humidity86%
• Dew point70°
• Pressure30.01 inHg
• UV index0 · Lowclear-sky peak 11 Saturday
• Sunrise and sunsetSunrise · Sunset · set
• Moonrise4:50 PMMoonset 4:36 AM
• Moon phaseWaxing gibbous99% lit

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.

NWS gridGFSGEFS ± spreadECMWFECMWF AI

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

ECMWF ensemble meteogram

10 daysTemperature plume

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.

The sun is down, so each rating says which span it is for: tomorrow’s daylight, tonight, or the next 24 hours.

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

The last night runs past the end of the forecast and is rated on the hours it covers.

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.

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

• Sat 9 AM to 1 PM 4 hours, every hour within the rules
• Sun 10 AM to 2 PM 4 hours, every hour within the rules
• Mon 9 AM to 3 PM 6 hours, every hour within the rules
• Thu 9 AM to 11 AM 2 hours, every hour within the rules
• Sat 9 AM to 3 PM 6 hours, every hour within the rules

Good Marginal No

Field days

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.

1. Tonight67° · NNE 7–14 mph

   Fog. Low near 20°C. Northnortheast wind 12 to 23 km/h.

2. Saturday85° · E 3–15 mph

   Fog. High near 29°C. East wind 5 to 24 km/h.

3. Saturday Night68° · ENE 5–16 mph

   Fog. Low near 20°C. Eastnortheast wind 8 to 26 km/h.

4. Sunday83° · ESE 2–13 mph

   Fog. High near 29°C. Eastsoutheast wind 3 to 21 km/h.

5. Sunday Night70° · NE 11–16 mph

   Fog. Low near 21°C. Northeast wind 18 to 26 km/h.

6. Monday82° · N 7–13 mph

   Fog. High near 28°C. North wind 12 to 21 km/h.

7. Monday Night71° · ENE 7–12 mph

   Clear. Low near 21°C. Eastnortheast wind 11 to 19 km/h.

8. Tuesday83° · ESE 2–16 mph

   Partly cloudy. High near 29°C. Eastsoutheast wind 4 to 25 km/h.

9. Tuesday Night73° · ENE 4–12 mph

   Clear. Low near 23°C. Eastnortheast wind 7 to 20 km/h.

10. Wednesday90° · SE 2–12 mph

    Rain showers. High near 32°C. Southeast wind 3 to 19 km/h. Precipitation around 1.3 mm.

11. Wednesday Night73° · WNW 2–4 mph

    Mostly clear. Low near 23°C. Westnorthwest wind 3 to 6 km/h. Precipitation around 0.5 mm.

12. Thursday80° · S 7–12 mph

    Rain. High near 27°C. South wind 11 to 19 km/h. Precipitation around 4 mm.

13. Thursday Night70° · SSW 5–8 mph

    Heavy rain. Low near 21°C. Southsouthwest wind 8 to 13 km/h. Precipitation around 12 mm.

14. Friday73° · SSW 5–6 mph

    Rain. High near 23°C. Southsouthwest wind 8 to 10 km/h. Precipitation around 5 mm.

15. Friday Night69° · W 1–3 mph

    Rain. Low near 21°C. West wind 2 to 5 km/h. Precipitation around 4 mm.

16. Saturday78° · ENE 9–15 mph

    Partly cloudy. High near 26°C. Eastnortheast wind 15 to 24 km/h. Precipitation around 0.5 mm.

17. Saturday Night73° · ENE 7–14 mph

    Partly cloudy. Low near 23°C. Eastnortheast wind 12 to 23 km/h.

18. Sunday81° · ENE 11–20 mph

    Partly cloudy. High near 27°C. Eastnortheast wind 18 to 32 km/h.

19. Sunday Night76° · NE 12 mph

    No forecast. Low near 24°C. Northeast wind around 20 km/h.

Climate of Itapemirim: normals, records and every month

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.