GreenlyLast and first frost dates in Celaya
Mexico
Celaya had no frost in 2016–2025, so crops are planted by warmth and rain rather than by frost dates.
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| Last spring frost | none in ten years |
|---|---|
| First autumn frost | none in ten years |
Median of 2016–2025 for the 25 km grid cell of the city: the last day at or below 0 °C in spring and the first in autumn (ERA5 reanalysis via Open-Meteo). In a cold year a frost can come a week or two later — Greenly warns 48 hours ahead.
There is no frost season here: crops are planted by warmth and rain rather than by frost dates.
When the soil warms up in Celaya
The day the top 7 cm of soil first averages each temperature over a week, median of 2016–2025 (ERA5 via Open-Meteo).
| Soil | Date |
|---|---|
| 5 °C | already in the first week of January |
| 10 °C | already in the first week of January |
| 15 °C | 10 January |
| 18 °C | 25 February |
Frost dates near Celaya
Celaya: weather for the next 7 days
Forecast by Open-Meteo. Nights at or below 0 °C are marked as frost.
Weather in Celaya by month
Average weather in Celaya over 2016–2025: the warmest month is May. Months that average 20 °C or more by day: January–December (24–31.8 °C). Months that average 30 °C or more by day: April (31.2 °C) and May (31.8 °C). No month averages below 0 °C at night; the coldest nights, in January, average 8.5 °C. About 653 mm of rain falls in a year, on 86 days; September is the wettest month (139 mm) and January the driest (3 mm).
| Month | Day, °C | Night, °C | Rain, mm | Rainy days |
|---|---|---|---|---|
| January | 24.1 | 8.5 | 3 | 1 |
| February | 26.5 | 9.7 | 8 | 1 |
| March | 29.4 | 11.5 | 5 | 1 |
| April | 31.2 | 13.6 | 5 | 1 |
| May | 31.8 | 15.4 | 29 | 5 |
| June | 29.1 | 15.4 | 130 | 14 |
| July | 27.1 | 14.5 | 136 | 18 |
| August | 27.2 | 14.6 | 127 | 18 |
| September | 26.5 | 14.5 | 139 | 16 |
| October | 26.2 | 13.1 | 46 | 7 |
| November | 25.7 | 10.9 | 13 | 2 |
| December | 24 | 9.3 | 12 | 2 |
Average of the daily highs and lows, rain per month and days with at least 1 mm (ERA5 via Open-Meteo, the same grid cell as the frost dates).
