Home › Cities › United States › Colorado › Greeley
Greeley, Colorado climate
Cfa Humid subtropical
Greeley has a seasonal cool-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is July with an average daily high near 33°C, while the coldest is December averaging around −8°C at night. Precipitation totals about 372 mm a year and is strongly seasonal — May alone averages 67 mm while January barely receives 11 mm. Winters bring significant snowfall (89 cm 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 countsGreeley climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 7 | 9 | 15 | 19 | 24 | 30 | 33 | 32 | 28 | 20 | 12 | 6 |
| Avg temp (°C) | −1 | 1 | 6 | 10 | 15 | 21 | 24 | 23 | 19 | 11 | 4 | −1 |
| Avg low (°C) | −8 | −7 | −2 | 2 | 7 | 12 | 15 | 14 | 9 | 3 | −3 | −8 |
| Precipitation (mm) | 11 | 11 | 23 | 46 | 67 | 45 | 41 | 40 | 29 | 27 | 17 | 14 |
| Snowfall (cm) | 14 | 13 | 13 | 9 | 1 | — | — | — | 1 | 8 | 14 | 14 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 7 | 9 | 15 | 19 | 24 | 30 |
| Avg temp (°C) | −1 | 1 | 6 | 10 | 15 | 21 |
| Avg low (°C) | −8 | −7 | −2 | 2 | 7 | 12 |
| Precipitation (mm) | 11 | 11 | 23 | 46 | 67 | 45 |
| Snowfall (cm) | 14 | 13 | 13 | 9 | 1 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 33 | 32 | 28 | 20 | 12 | 6 |
| Avg temp (°C) | 24 | 23 | 19 | 11 | 4 | −1 |
| Avg low (°C) | 15 | 14 | 9 | 3 | −3 | −8 |
| Precipitation (mm) | 41 | 40 | 29 | 27 | 17 | 14 |
| Snowfall (cm) | — | — | 1 | 8 | 14 | 14 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 4 | 4 | 5 | 8 | 11 | 8 | 7 | 7 | 6 | 6 | 4 | 4 |
| Days with high ≥ 32°C (days) | — | — | — | 0.2 | 2 | 11 | 19 | 16 | 7 | 0.2 | — | — |
| Days with low ≤ 0°C (days) | 30 | 26 | 22 | 10 | 2 | — | — | — | 0.4 | 9 | 24 | 30 |
| Days with snowfall ≥ 2.5 cm (days) | 2 | 2 | 2 | 1 | 0.2 | — | — | — | 0.2 | 0.7 | 2 | 2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 4 | 4 | 5 | 8 | 11 | 8 |
| Days with high ≥ 32°C (days) | — | — | — | 0.2 | 2 | 11 |
| Days with low ≤ 0°C (days) | 30 | 26 | 22 | 10 | 2 | — |
| Days with snowfall ≥ 2.5 cm (days) | 2 | 2 | 2 | 1 | 0.2 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 7 | 7 | 6 | 6 | 4 | 4 |
| Days with high ≥ 32°C (days) | 19 | 16 | 7 | 0.2 | — | — |
| Days with low ≤ 0°C (days) | — | — | 0.4 | 9 | 24 | 30 |
| Days with snowfall ≥ 2.5 cm (days) | — | — | 0.2 | 0.7 | 2 | 2 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 65 | 63 | 60 | 62 | 61 | 50 | 50 | 51 | 46 | 51 | 57 | 63 |
| Clear days (≤ 30% cloud) | 4 | 4 | 6 | 5 | 5 | 8 | 8 | 8 | 11 | 10 | 7 | 4 |
| Partly cloudy days (30–70%) | 12 | 11 | 12 | 11 | 12 | 14 | 15 | 14 | 10 | 11 | 12 | 12 |
| Cloudy days (≥ 70%) | 15 | 13 | 13 | 14 | 14 | 8 | 8 | 9 | 8 | 10 | 12 | 15 |
| Relative humidity (%) | 57 | 57 | 53 | 51 | 51 | 44 | 44 | 45 | 44 | 49 | 53 | 58 |
| Wind speed (km/h) | 11.6 | 10.9 | 10.7 | 10.5 | 8.7 | 8.1 | 7.7 | 7.4 | 7.6 | 8.6 | 9.4 | 10.5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 65 | 63 | 60 | 62 | 61 | 50 |
| Clear days (≤ 30% cloud) | 4 | 4 | 6 | 5 | 5 | 8 |
| Partly cloudy days (30–70%) | 12 | 11 | 12 | 11 | 12 | 14 |
| Cloudy days (≥ 70%) | 15 | 13 | 13 | 14 | 14 | 8 |
| Relative humidity (%) | 57 | 57 | 53 | 51 | 51 | 44 |
| Wind speed (km/h) | 11.6 | 10.9 | 10.7 | 10.5 | 8.7 | 8.1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 50 | 51 | 46 | 51 | 57 | 63 |
| Clear days (≤ 30% cloud) | 8 | 8 | 11 | 10 | 7 | 4 |
| Partly cloudy days (30–70%) | 15 | 14 | 10 | 11 | 12 | 12 |
| Cloudy days (≥ 70%) | 8 | 9 | 8 | 10 | 12 | 15 |
| Relative humidity (%) | 44 | 45 | 44 | 49 | 53 | 58 |
| Wind speed (km/h) | 7.7 | 7.4 | 7.6 | 8.6 | 9.4 | 10.5 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Greeley Unc (NOAA GHCN station USC00053553), 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.