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Windsor, Colorado climate
Cfa Humid subtropical
Windsor has a seasonal cool-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is July with an average daily high near 87°F, while the coldest is December averaging around 18°F at night. Precipitation totals about 16 inches a year and is strongly seasonal — May alone averages 2.7 inches while January barely receives 0.41 inches. Winters bring significant snowfall (51 inches of snow per year on average).
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation split into rain and snow · 1991–2020 normals · hover a month for the exact figuresClear vs cloudy days
Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day countsWindsor climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 45 | 47 | 56 | 63 | 71 | 82 | 87 | 85 | 77 | 64 | 53 | 44 |
| Avg temp (°F) | 32 | 34 | 42 | 49 | 58 | 67 | 73 | 71 | 63 | 50 | 39 | 31 |
| Avg low (°F) | 18 | 21 | 29 | 35 | 44 | 53 | 59 | 57 | 48 | 36 | 26 | 18 |
| Precipitation (in) | 0.4 | 0.5 | 1.3 | 2.1 | 2.7 | 1.9 | 1.6 | 1.5 | 1.4 | 1.3 | 0.7 | 0.5 |
| Snowfall (in) | 6.7 | 7.6 | 9.4 | 6.2 | 1.6 | — | — | — | 0.7 | 4.1 | 7.6 | 7.5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 45 | 47 | 56 | 63 | 71 | 82 |
| Avg temp (°F) | 32 | 34 | 42 | 49 | 58 | 67 |
| Avg low (°F) | 18 | 21 | 29 | 35 | 44 | 53 |
| Precipitation (in) | 0.4 | 0.5 | 1.3 | 2.1 | 2.7 | 1.9 |
| Snowfall (in) | 6.7 | 7.6 | 9.4 | 6.2 | 1.6 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 87 | 85 | 77 | 64 | 53 | 44 |
| Avg temp (°F) | 73 | 71 | 63 | 50 | 39 | 31 |
| Avg low (°F) | 59 | 57 | 48 | 36 | 26 | 18 |
| Precipitation (in) | 1.6 | 1.5 | 1.4 | 1.3 | 0.7 | 0.5 |
| Snowfall (in) | — | — | 0.7 | 4.1 | 7.6 | 7.5 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 4 | 5 | 6 | 9 | 12 | 9 | 9 | 9 | 7 | 6 | 5 | 4 |
| Days with high ≥ 90°F (days) | — | — | — | — | 0.4 | 6 | 13 | 8 | 2 | — | — | — |
| Days with low ≤ 32°F (days) | 29 | 26 | 21 | 9 | 1 | — | — | — | 0.5 | 9 | 24 | 30 |
| Days with snowfall ≥ 1 in (days) | 2 | 3 | 2 | 2 | 0.4 | 0.0 | — | — | 0.1 | 0.8 | 2 | 2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 4 | 5 | 6 | 9 | 12 | 9 |
| Days with high ≥ 90°F (days) | — | — | — | — | 0.4 | 6 |
| Days with low ≤ 32°F (days) | 29 | 26 | 21 | 9 | 1 | — |
| Days with snowfall ≥ 1 in (days) | 2 | 3 | 2 | 2 | 0.4 | 0.0 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 9 | 9 | 7 | 6 | 5 | 4 |
| Days with high ≥ 90°F (days) | 13 | 8 | 2 | — | — | — |
| Days with low ≤ 32°F (days) | — | — | 0.5 | 9 | 24 | 30 |
| Days with snowfall ≥ 1 in (days) | — | — | 0.1 | 0.8 | 2 | 2 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 63 | 67 | 68 | 71 | 69 | 56 | 57 | 60 | 54 | 55 | 59 | 63 |
| Clear days (≤ 30% cloud) | 3 | 2 | 3 | 2 | 2 | 5 | 5 | 4 | 7 | 8 | 5 | 4 |
| Partly cloudy days (30–70%) | 14 | 11 | 12 | 10 | 12 | 15 | 16 | 14 | 12 | 12 | 13 | 14 |
| Cloudy days (≥ 70%) | 14 | 15 | 16 | 18 | 18 | 9 | 10 | 12 | 10 | 11 | 12 | 14 |
| Relative humidity (%) | 57 | 57 | 53 | 51 | 51 | 44 | 44 | 45 | 44 | 49 | 53 | 58 |
| Wind speed (mph) | 7.2 | 6.8 | 6.6 | 6.5 | 5.4 | 5.0 | 4.8 | 4.6 | 4.7 | 5.3 | 5.9 | 6.6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 63 | 67 | 68 | 71 | 69 | 56 |
| Clear days (≤ 30% cloud) | 3 | 2 | 3 | 2 | 2 | 5 |
| Partly cloudy days (30–70%) | 14 | 11 | 12 | 10 | 12 | 15 |
| Cloudy days (≥ 70%) | 14 | 15 | 16 | 18 | 18 | 9 |
| Relative humidity (%) | 57 | 57 | 53 | 51 | 51 | 44 |
| Wind speed (mph) | 7.2 | 6.8 | 6.6 | 6.5 | 5.4 | 5.0 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 57 | 60 | 54 | 55 | 59 | 63 |
| Clear days (≤ 30% cloud) | 5 | 4 | 7 | 8 | 5 | 4 |
| Partly cloudy days (30–70%) | 16 | 14 | 12 | 12 | 13 | 14 |
| Cloudy days (≥ 70%) | 10 | 12 | 10 | 11 | 12 | 14 |
| Relative humidity (%) | 44 | 45 | 44 | 49 | 53 | 58 |
| Wind speed (mph) | 4.8 | 4.6 | 4.7 | 5.3 | 5.9 | 6.6 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at FT Collins (NOAA GHCN station USC00053005), about 19 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.