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Fresnillo, Zacatecas climate
BSk Cold semi-arid
Fresnillo has a mildly seasonal mild-temperate climate (Cold semi-arid, Köppen BSk). The hottest month is June with an average daily high near 29°C, while the coldest is January averaging around 4°C at night. Precipitation totals about 450 mm a year and is strongly seasonal — August alone averages 92 mm while April barely receives 3 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)Fresnillo climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 20 | 22 | 25 | 28 | 30 | 29 | 26 | 26 | 25 | 24 | 22 | 20 |
| Avg temp (°C) | 12 | 14 | 16 | 19 | 21 | 21 | 20 | 20 | 19 | 17 | 14 | 13 |
| Avg low (°C) | 4 | 6 | 7 | 10 | 13 | 14 | 14 | 14 | 13 | 10 | 7 | 5 |
| Precipitation (mm) | 15 | 13 | 4 | 3 | 12 | 80 | 86 | 92 | 83 | 39 | 13 | 11 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 20 | 22 | 25 | 28 | 30 | 29 |
| Avg temp (°C) | 12 | 14 | 16 | 19 | 21 | 21 |
| Avg low (°C) | 4 | 6 | 7 | 10 | 13 | 14 |
| Precipitation (mm) | 15 | 13 | 4 | 3 | 12 | 80 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 26 | 26 | 25 | 24 | 22 | 20 |
| Avg temp (°C) | 20 | 20 | 19 | 17 | 14 | 13 |
| Avg low (°C) | 14 | 14 | 13 | 10 | 7 | 5 |
| Precipitation (mm) | 86 | 92 | 83 | 39 | 13 | 11 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 42 | 37 | 37 | 40 | 38 | 51 | 57 | 54 | 57 | 37 | 31 | 40 |
| Relative humidity (%) | 56 | 51 | 41 | 36 | 39 | 54 | 63 | 66 | 70 | 66 | 63 | 60 |
| Wind speed (km/h) | 9.0 | 9.8 | 10.3 | 10.6 | 9.0 | 8.6 | 8.5 | 8.5 | 8.4 | 7.7 | 7.8 | 8.6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 42 | 37 | 37 | 40 | 38 | 51 |
| Relative humidity (%) | 56 | 51 | 41 | 36 | 39 | 54 |
| Wind speed (km/h) | 9.0 | 9.8 | 10.3 | 10.6 | 9.0 | 8.6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 57 | 54 | 57 | 37 | 31 | 40 |
| Relative humidity (%) | 63 | 66 | 70 | 66 | 63 | 60 |
| Wind speed (km/h) | 8.5 | 8.5 | 8.4 | 7.7 | 7.8 | 8.6 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from CONAGUA / SMN, Mexico's national weather service, measured at Fresnillo, about 2 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.