Maclovio Herrera (Colonia Aviación), Mexico

1. Sun5 PM74°2 mph
2. 6 PM74°3 mph
3. 7 PM73°2 mph
4. 8 PM72°2 mph
5. 9 PM71°3 mph
6. 10 PM70°3 mph
7. 11 PM70°3 mph
8. Mon12 AM69°4 mph
9. 1 AM67°4 mph
10. 2 AM66°2 mph
11. 3 AM66°4 mph
12. 4 AM66°2 mph
13. 5 AM66°2 mph
14. 6 AM66°2 mph
15. 7 AM66°2 mph
16. 8 AM67°2 mph
17. 9 AM69°2 mph
18. 10 AM73°4 mph
19. 11 AM75°7 mph
20. 12 PM76°8 mph
21. 1 PM77°10 mph
22. 2 PM78°10 mph
23. 3 PM77°11 mph
24. 4 PM75°12 mph
25. 5 PM72°11 mph
26. 6 PM68°8 mph
27. 7 PM64°6 mph
28. 8 PM61°3 mph
29. 9 PM60°2 mph
30. 10 PM59°3 mph
31. 11 PM57°4 mph
32. Tue12 AM56°3 mph
33. 1 AM56°2 mph
34. 2 AM56°2 mph
35. 3 AM55°2 mph
36. 4 AM56°2 mph
37. 5 AM56°2 mph
38. 6 AM55°3 mph
39. 7 AM54°3 mph
40. 8 AM59°3 mph
41. 9 AM66°2 mph
42. 10 AM70°4 mph
43. 11 AM73°7 mph
44. 12 PM76°9 mph
45. 1 PM78°11 mph
46. 2 PM79°12 mph
47. 3 PM78°13 mph
48. 4 PM76°12 mph

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

1. TodaySep 2774°66°Cloudy—0.06 inwind 3 mph
2. MonSep 2878°55°Light rain—0.31 inwind 12 mph
3. TueSep 2979°62°Clear—wind 13 mph
4. WedSep 3080°56°Clear—wind 10 mph
5. ThuOct 185°64°Clear—wind 10 mph
6. FriOct 294°68°Clear—wind 13 mph
7. SatOct 393°64°Clear—wind 13 mph
8. SunOct 491°65°Clear—wind 8 mph
9. MonOct 589°62°Clear—wind 8 mph
10. TueOct 691°68°Clear—wind 9 mph
11. WedOct 794°67°National Blend6%wind 10 mph · gusts 22 mph
12. ThuOct 8~91°72°Model mean
13. FriOct 9~92°75°Model mean0.02 in
14. SatOct 10~90°74°Model mean0.08 in
15. SunOct 11~87°70°Model mean
16. MonOct 12~67°64°Model mean0.01 in

• Feels like74°
• WindWNW 2 mph
• Humidity74%
• Dew point65°
• Pressure29.87 inHg
• UV index1 · Lowclear-sky peak 1 today
• Sunrise and sunsetSunrise · Sunset
• Moonrise7:04 PMMoonset 7:39 AM
• Moon phaseWaning gibbous98% 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 gridBlendHRRRGFSGEFS ± 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

No forecast has skill day by day past about two weeks, and this page does not print one. Where the models stop, the calendar takes over: the 1991 to 2020 normal for each date, the record high and low ever set on it, and where the Climate Prediction Center leans warm, cool, wet or dry over the coming weeks, the month and the season. A site that shows a high for a date three months out is showing you this normal with a wobble.

The forecast reaches Mon Oct 12, from MET Norway, then the mean of the global models. Beyond it the lines are the calendar.

Forecast high and lowNormal high and lowRecord high and low

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 poor.

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

• Mon 10 AM to 2 PM 4 hours, every hour within the rules
• Mon 6 PM to 8 PM 2 hours, every hour within the rules
• Tue 10 AM to 1 PM 3 hours, some with delta T between 8 and 10 °C
• Tue 5 PM to 9 PM 4 hours, every hour within the rules
• Wed 5 PM to 11 PM 6 hours, some with delta T between 8 and 10 °C
• Thu 5 AM to 11 AM 6 hours, every hour within the rules
• Thu 5 PM to Fri 11 AM 18 hours, some with delta T between 8 and 10 °C
• Fri 11 PM to Sat 11 AM 12 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.

The best-rated day this week is Sunday, rated best.

Periods in bold fall within an hour of sunrise or sunset. The weather’s side is the fishing index · Solunar tables for Maclovio Herrera (Colonia Aviación), 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. This Afternoon74° · WNW 2 mph

   Cloudy. High near 23°C. Westnorthwest wind around 4 km/h.

2. Tonight66° · SW 2–4 mph

   Heavy rain. Low near 19°C. Southwest wind 3 to 6 km/h. Precipitation around 9 mm.

3. Monday78° · SW 2–12 mph

   Light rain. High near 26°C. Southwest wind 3 to 19 km/h.

4. Monday Night55° · ESE 2–8 mph

   Clear. Low near 13°C. Eastsoutheast wind 3 to 13 km/h.

5. Tuesday79° · WNW 2–12 mph

   Clear. High near 26°C. Westnorthwest wind 4 to 20 km/h.

6. Tuesday Night62° · ESE 1–7 mph

   Clear. Low near 17°C. Eastsoutheast wind 2 to 11 km/h.

7. Wednesday80° · W 4–9 mph

   Clear. High near 26°C. West wind 7 to 15 km/h.

8. Wednesday Night56° · ENE 2–4 mph

   Clear. Low near 13°C. Eastnortheast wind 4 to 6 km/h.

9. Thursday85° · W 6–10 mph

   Clear. High near 29°C. West wind 9 to 16 km/h.

10. Thursday Night64° · ENE 4–7 mph

    Clear. Low near 18°C. Eastnortheast wind 6 to 11 km/h.

11. Friday94° · ENE 8–13 mph

    Clear. High near 34°C. Eastnortheast wind 13 to 21 km/h.

12. Friday Night68° · ENE 4–5 mph

    Clear. Low near 20°C. Eastnortheast wind 7 to 8 km/h.

13. Saturday93° · N 10–13 mph

    Clear. High near 34°C. North wind 16 to 21 km/h.

14. Saturday Night64° · E 2–6 mph

    Clear. Low near 18°C. East wind 3 to 9 km/h.

15. Sunday91° · W 7–8 mph

    Clear. High near 33°C. West wind 11 to 13 km/h.

16. Sunday Night65° · ENE 1–2 mph

    Clear. Low near 18°C. Eastnortheast wind 2 to 3 km/h.

17. Monday89° · W 7–8 mph

    Clear. High near 32°C. West wind 11 to 13 km/h.

18. Monday Night62° · ENE 2–5 mph

    Clear. Low near 17°C. Eastnortheast wind 4 to 8 km/h.

19. Tuesday91° · WSW 4–9 mph

    Clear. High near 33°C. Westsouthwest wind 6 to 14 km/h.

20. Tuesday Night68° · ENE 4–6 mph

    Clear. Low near 20°C. Eastnortheast wind 6 to 10 km/h.

The last spring freeze (32°F) usually comes around April 30 and the first fall freeze around October 26: a growing season of about 174 days.

One fall in ten brings a freeze by September 30; one spring in ten still has one after June 1.

Climate of Maclovio Herrera (Colonia Aviación): 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.

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.