São Miguel da Baixa Grande, Brazil

1. Wed7 AM83°6 mph
2. 8 AM87°7 mph
3. 9 AM90°6 mph
4. 10 AM93°7 mph
5. 11 AM96°7 mph
6. 12 PM98°7 mph
7. 1 PM100°6 mph
8. 2 PM101°6 mph
9. 3 PM102°4 mph
10. 4 PM101°5 mph
11. 5 PM100°6 mph
12. 6 PM95°7 mph
13. 7 PM93°11 mph
14. 8 PM94°9 mph
15. 9 PM91°9 mph
16. 10 PM91°9 mph
17. 11 PM91°9 mph
18. Thu12 AM89°7 mph
19. 1 AM87°8 mph
20. 2 AM85°10 mph
21. 3 AM82°9 mph
22. 4 AM81°8 mph
23. 5 AM81°10 mph
24. 6 AM80°11 mph
25. 7 AM83°10 mph
26. 8 AM86°11 mph
27. 9 AM91°11 mph
28. 10 AM94°10 mph
29. 11 AM96°10 mph
30. 12 PM98°9 mph
31. 1 PM100°7 mph
32. 2 PM101°9 mph
33. 3 PM101°8 mph
34. 4 PM101°9 mph
35. 5 PM99°10 mph
36. 6 PM96°11 mph
37. 7 PM94°9 mph
38. 8 PM94°9 mph
39. 9 PM92°9 mph
40. 10 PM90°10 mph
41. 11 PM89°9 mph
42. Fri12 AM88°10 mph
43. 1 AM87°12 mph
44. 2 AM82°10 mph
45. 3 AM80°10 mph
46. 4 AM80°8 mph
47. 5 AM79°7 mph
48. 6 AM79°7 mph

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

1. TodaySep 30102°81°Partly cloudy—wind 11 mph
2. ThuOct 1101°79°Partly cloudy—wind 11 mph
3. FriOct 2100°81°Partly cloudy—wind 12 mph
4. SatOct 3100°80°Cloudy—wind 9 mph
5. SunOct 498°81°Mostly clear—0.11 inwind 7 mph
6. MonOct 598°78°Rain showers—0.04 inwind 10 mph
7. TueOct 6103°83°Clear—wind 10 mph
8. WedOct 7101°83°Cloudy—0.01 inwind 11 mph
9. ThuOct 8100°84°Mostly clear—wind 11 mph
10. FriOct 991°84°No forecast—wind 8 mph

• Feels like87°
• WindNNE 6 mph
• Humidity64%
• Dew point70°
• Pressure29.90 inHg
• UV index1 · Lowclear-sky peak 13 today
• Sunrise and sunsetSunrise · Sunset
• Moonrise9:26 PMMoonset 8:32 AM
• Moon phaseWaning gibbous83% lit

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.

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

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 in the table 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 and transparency by hour, where shown, are Environment and Climate Change Canada’s astronomy forecast (regional model; seeing from cloud, wind shear, turbulence near the ground and the surface temperature trend; transparency from the moisture through the whole air column), under the Open Government Licence - Canada. 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.

Golden hour is the sun between 6 degrees above the horizon and 4 degrees below it; blue hour is the sun between 4 and 6 degrees below. These are the definitions timeanddate.com and PhotoPills use. Directions are degrees clockwise from true north, where the sun’s upper edge and the moon’s center cross a flat horizon; hills and buildings change both. None means the sun does not reach that height on the day; all day means it stays inside the band.

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

• Wed 7 AM to 10 AM 3 hours, some with delta T between 8 and 10 °C
• Thu 3 AM to 5 AM 2 hours, every hour within the rules
• Fri 3 AM to 8 AM 5 hours, every hour within the rules
• Fri 9 AM to 11 AM 2 hours, some with delta T between 8 and 10 °C
• Sat 3 AM to 3 PM 12 hours, some with delta T between 8 and 10 °C
• Sun 9 AM to 3 PM 6 hours, every hour within the rules
• Mon 3 AM to 9 AM 6 hours, some with delta T between 8 and 10 °C
• Tue 3 AM to 3 PM 12 hours, some with delta T between 8 and 10 °C

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.

The best-rated day this week is Thursday, rated fair.

Periods in bold fall within an hour of sunrise or sunset. The weather’s side is the fishing index · Solunar tables for São Miguel da Baixa Grande, by month

Major periods are two hours centered on the moon’s passage overhead and underfoot; minor periods are one hour centered on moonrise and moonset: the conventional durations of John Alden Knight’s solunar tables (1936). The rating is this site’s: one point to start, two more within a day and a half of a new or full moon (one more within three and a half days), and one more when a period falls within an hour of sunrise or sunset. The theory has mixed support in fisheries research; the times are exact astronomy.

1. Today102° · E 4–7 mph

   Partly cloudy. High near 39°C. East wind 7 to 11 km/h.

2. Tonight81° · NE 7–11 mph

   Cloudy. Low near 27°C. Northeast wind 11 to 18 km/h.

3. Thursday101° · E 7–11 mph

   Partly cloudy. High near 39°C. East wind 12 to 18 km/h.

4. Thursday Night79° · NE 7–12 mph

   Partly cloudy. Low near 26°C. Northeast wind 12 to 19 km/h.

5. Friday100° · NE 5–10 mph

   Partly cloudy. High near 38°C. Northeast wind 8 to 16 km/h.

6. Friday Night81° · NNE 6–9 mph

   Partly cloudy. Low near 27°C. Northnortheast wind 9 to 14 km/h.

7. Saturday100° · E 6–6 mph

   Cloudy. High near 38°C. East wind 9 to 10 km/h.

8. Saturday Night80° · N 4–6 mph

   Rain showers. Low near 27°C. North wind 6 to 9 km/h. Precipitation around 3 mm.

9. Sunday98° · ESE 6–7 mph

   Mostly clear. High near 37°C. Eastsoutheast wind 10 to 11 km/h.

10. Sunday Night81° · NE 4–6 mph

    Cloudy. Low near 27°C. Northeast wind 6 to 9 km/h.

11. Monday98° · E 6–10 mph

    Rain showers. High near 37°C. East wind 10 to 16 km/h. Precipitation around 1.1 mm.

12. Monday Night78° · ENE 6–8 mph

    Mostly clear. Low near 26°C. Eastnortheast wind 9 to 13 km/h.

13. Tuesday103° · E 9–10 mph

    Clear. High near 40°C. East wind 14 to 16 km/h.

14. Tuesday Night83° · E 6–9 mph

    Mostly clear. Low near 28°C. East wind 10 to 15 km/h.

15. Wednesday101° · ESE 9–11 mph

    Cloudy. High near 39°C. Eastsoutheast wind 14 to 18 km/h.

16. Wednesday Night83° · ESE 6–9 mph

    Clear. Low near 28°C. Eastsoutheast wind 10 to 15 km/h.

17. Thursday100° · ESE 6–11 mph

    Mostly clear. High near 38°C. Eastsoutheast wind 9 to 18 km/h.

18. Thursday Night84° · NE 4–6 mph

    Partly cloudy. Low near 29°C. Northeast wind 6 to 9 km/h.

19. Friday91° · ESE 8 mph

    No forecast. High near 33°C. Eastsoutheast wind around 13 km/h.

Climate of São Miguel da Baixa Grande: 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.