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Celaya, Guanajuato climate
BSh Hot semi-arid
Celaya has a mildly seasonal warm-temperate climate (Hot semi-arid, Köppen BSh). The hottest month is May with an average daily high near 89°F, while the coldest is January averaging around 44°F at night. Precipitation totals about 24 inches a year and is strongly seasonal — July alone averages 5.8 inches while December barely receives 0.16 inches.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Celaya climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 79 | 82 | 86 | 89 | 89 | 85 | 82 | 82 | 82 | 82 | 81 | 80 |
| Avg temp (°F) | 61 | 64 | 68 | 72 | 74 | 73 | 70 | 70 | 70 | 68 | 65 | 63 |
| Avg low (°F) | 44 | 46 | 50 | 55 | 59 | 60 | 59 | 58 | 58 | 55 | 49 | 46 |
| Precipitation (in) | 0.4 | 0.5 | 0.4 | 0.3 | 1.1 | 4.0 | 5.8 | 5.4 | 4.6 | 1.4 | 0.4 | 0.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 79 | 82 | 86 | 89 | 89 | 85 |
| Avg temp (°F) | 61 | 64 | 68 | 72 | 74 | 73 |
| Avg low (°F) | 44 | 46 | 50 | 55 | 59 | 60 |
| Precipitation (in) | 0.4 | 0.5 | 0.4 | 0.3 | 1.1 | 4.0 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 82 | 82 | 82 | 82 | 81 | 80 |
| Avg temp (°F) | 70 | 70 | 70 | 68 | 65 | 63 |
| Avg low (°F) | 59 | 58 | 58 | 55 | 49 | 46 |
| Precipitation (in) | 5.8 | 5.4 | 4.6 | 1.4 | 0.4 | 0.2 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 35 | 30 | 29 | 36 | 44 | 60 | 65 | 61 | 63 | 47 | 33 | 33 |
| Relative humidity (%) | 58 | 52 | 44 | 39 | 46 | 62 | 71 | 74 | 76 | 72 | 68 | 62 |
| Wind speed (mph) | 4.4 | 4.6 | 4.8 | 4.9 | 4.7 | 4.9 | 4.6 | 4.7 | 4.7 | 4.6 | 4.5 | 4.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 35 | 30 | 29 | 36 | 44 | 60 |
| Relative humidity (%) | 58 | 52 | 44 | 39 | 46 | 62 |
| Wind speed (mph) | 4.4 | 4.6 | 4.8 | 4.9 | 4.7 | 4.9 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 65 | 61 | 63 | 47 | 33 | 33 |
| Relative humidity (%) | 71 | 74 | 76 | 72 | 68 | 62 |
| Wind speed (mph) | 4.6 | 4.7 | 4.7 | 4.6 | 4.5 | 4.2 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from CONAGUA / SMN, Mexico's national weather service, measured at Celaya (smn), about 1 km from the city centre.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.