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Zacatecas, Zacatecas climate
BSk Cold semi-arid
Zacatecas has a mildly seasonal mild-temperate climate (Cold semi-arid, Köppen BSk). The hottest month is May with an average daily high near 27°C, while the coldest is January averaging around 6°C at night. Precipitation totals about 526 mm a year and is strongly seasonal — July alone averages 110 mm while April barely receives 8 mm.
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)Zacatecas climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 18 | 20 | 22 | 25 | 27 | 26 | 24 | 24 | 23 | 22 | 20 | 19 |
| Avg temp (°C) | 12 | 13 | 15 | 18 | 20 | 19 | 18 | 18 | 17 | 16 | 14 | 12 |
| Avg low (°C) | 6 | 7 | 8 | 10 | 12 | 13 | 12 | 12 | 12 | 10 | 8 | 6 |
| Precipitation (mm) | 18 | 14 | 9 | 8 | 20 | 90 | 110 | 97 | 99 | 35 | 15 | 13 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 18 | 20 | 22 | 25 | 27 | 26 |
| Avg temp (°C) | 12 | 13 | 15 | 18 | 20 | 19 |
| Avg low (°C) | 6 | 7 | 8 | 10 | 12 | 13 |
| Precipitation (mm) | 18 | 14 | 9 | 8 | 20 | 90 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 24 | 24 | 23 | 22 | 20 | 19 |
| Avg temp (°C) | 18 | 18 | 17 | 16 | 14 | 12 |
| Avg low (°C) | 12 | 12 | 12 | 10 | 8 | 6 |
| Precipitation (mm) | 110 | 97 | 99 | 35 | 15 | 13 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 39 | 33 | 33 | 37 | 38 | 55 | 61 | 57 | 59 | 41 | 30 | 38 |
| Relative humidity (%) | 53 | 48 | 39 | 34 | 38 | 52 | 60 | 63 | 68 | 64 | 61 | 57 |
| Wind speed (m/s) | 2.9 | 3.1 | 3.2 | 3.3 | 2.9 | 3.0 | 3.1 | 3.0 | 2.8 | 2.5 | 2.6 | 2.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 39 | 33 | 33 | 37 | 38 | 55 |
| Relative humidity (%) | 53 | 48 | 39 | 34 | 38 | 52 |
| Wind speed (m/s) | 2.9 | 3.1 | 3.2 | 3.3 | 2.9 | 3.0 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 61 | 57 | 59 | 41 | 30 | 38 |
| Relative humidity (%) | 60 | 63 | 68 | 64 | 61 | 57 |
| Wind speed (m/s) | 3.1 | 3.0 | 2.8 | 2.5 | 2.6 | 2.7 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from CONAGUA / SMN, Mexico's national weather service, measured at Zacatecas (dge), inside the city.
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.