GreenlyLast and first frost dates in Ciudad Obregón
Mexico
Ciudad Obregón 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 Ciudad Obregón
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 | already in the first week of January |
| 18 °C | 16 January |
Frost dates near Ciudad Obregón
| City | Distance | Last spring frost | First autumn frost |
|---|---|---|---|
| Hermosillo | 202 km | — | — |
| Los Mochis | 211 km | — | — |
| La Paz (Mexico) | 373 km | — | — |
| Culiacán | 393 km | — | — |
| Chihuahua | 400 km | 8 February | 8 December |
Ciudad Obregón: weather for the next 7 days
Forecast by Open-Meteo. Nights at or below 0 °C are marked as frost.
Weather in Ciudad Obregón by month
Average weather in Ciudad Obregón over 2016–2025: the warmest month is June. Months that average 20 °C or more by day: January–December (26–38.6 °C). Months that average 30 °C or more by day: March–November (30.4–38.6 °C). No month averages below 0 °C at night; the coldest nights, in January, average 10.7 °C. About 301 mm of rain falls in a year, on 40 days; August is the wettest month (85 mm) and April the driest (0 mm).
| Month | Day, °C | Night, °C | Rain, mm | Rainy days |
|---|---|---|---|---|
| January | 26 | 10.7 | 6 | 1 |
| February | 27.9 | 11.9 | 7 | 2 |
| March | 30.4 | 13.5 | 5 | 1 |
| April | 33.8 | 16.1 | 0 | 0 |
| May | 36 | 18.6 | 0 | 0 |
| June | 38.6 | 24.2 | 17 | 1 |
| July | 38.3 | 27 | 58 | 8 |
| August | 37.5 | 26.7 | 85 | 13 |
| September | 36.8 | 25.3 | 80 | 8 |
| October | 36 | 21.8 | 19 | 2 |
| November | 31.1 | 16 | 11 | 2 |
| December | 27.1 | 12.4 | 13 | 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).
