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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 83°F, while the coldest is January averaging around 39°F at night. Precipitation totals about 18 inches a year and is strongly seasonal — August alone averages 3.6 inches while April barely receives 0.13 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)Fresnillo climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 68 | 72 | 76 | 82 | 85 | 83 | 79 | 79 | 76 | 75 | 72 | 69 |
| Avg temp (°F) | 53 | 57 | 61 | 66 | 70 | 71 | 68 | 67 | 66 | 63 | 58 | 55 |
| Avg low (°F) | 39 | 42 | 45 | 50 | 55 | 58 | 56 | 56 | 55 | 50 | 44 | 40 |
| Precipitation (in) | 0.6 | 0.5 | 0.2 | 0.1 | 0.5 | 3.1 | 3.4 | 3.6 | 3.3 | 1.5 | 0.5 | 0.4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 68 | 72 | 76 | 82 | 85 | 83 |
| Avg temp (°F) | 53 | 57 | 61 | 66 | 70 | 71 |
| Avg low (°F) | 39 | 42 | 45 | 50 | 55 | 58 |
| Precipitation (in) | 0.6 | 0.5 | 0.2 | 0.1 | 0.5 | 3.1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 79 | 79 | 76 | 75 | 72 | 69 |
| Avg temp (°F) | 68 | 67 | 66 | 63 | 58 | 55 |
| Avg low (°F) | 56 | 56 | 55 | 50 | 44 | 40 |
| Precipitation (in) | 3.4 | 3.6 | 3.3 | 1.5 | 0.5 | 0.4 |
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 (mph) | 5.6 | 6.1 | 6.4 | 6.6 | 5.6 | 5.4 | 5.3 | 5.3 | 5.2 | 4.8 | 4.9 | 5.3 |
| 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 (mph) | 5.6 | 6.1 | 6.4 | 6.6 | 5.6 | 5.4 |
| 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 (mph) | 5.3 | 5.3 | 5.2 | 4.8 | 4.9 | 5.3 |
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.