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Yucaipa, California climate
BSh Hot semi-arid
Yucaipa has a seasonal warm-temperate climate (Hot semi-arid, Köppen BSh). The hottest month is August with an average daily high near 96°F, while the coldest is December averaging around 40°F at night. Precipitation totals about 13 inches a year and is strongly seasonal — February alone averages 3.0 inches while August barely receives 0.09 inches.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 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 countsYucaipa climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 67 | 67 | 71 | 76 | 80 | 89 | 95 | 96 | 92 | 83 | 75 | 67 |
| Avg temp (°F) | 54 | 55 | 58 | 62 | 66 | 72 | 79 | 80 | 76 | 68 | 60 | 53 |
| Avg low (°F) | 41 | 42 | 45 | 48 | 52 | 56 | 63 | 63 | 60 | 53 | 45 | 40 |
| Precipitation (in) | 2.8 | 3.0 | 2.0 | 0.9 | 0.4 | 0.1 | 0.1 | 0.1 | 0.1 | 0.5 | 0.9 | 2.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 67 | 67 | 71 | 76 | 80 | 89 |
| Avg temp (°F) | 54 | 55 | 58 | 62 | 66 | 72 |
| Avg low (°F) | 41 | 42 | 45 | 48 | 52 | 56 |
| Precipitation (in) | 2.8 | 3.0 | 2.0 | 0.9 | 0.4 | 0.1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 95 | 96 | 92 | 83 | 75 | 67 |
| Avg temp (°F) | 79 | 80 | 76 | 68 | 60 | 53 |
| Avg low (°F) | 63 | 63 | 60 | 53 | 45 | 40 |
| Precipitation (in) | 0.1 | 0.1 | 0.1 | 0.5 | 0.9 | 2.0 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 7 | 8 | 6 | 4 | 3 | 0.8 | 0.9 | 0.6 | 1.0 | 3 | 4 | 6 |
| Days with high ≥ 90°F (days) | 0.0 | — | 0.6 | 2 | 5 | 11 | 18 | 20 | 16 | 7 | 1.0 | — |
| Days with low ≤ 32°F (days) | 0.9 | 0.4 | 0.0 | — | — | — | — | — | — | — | 0.3 | 1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 7 | 8 | 6 | 4 | 3 | 0.8 |
| Days with high ≥ 90°F (days) | 0.0 | — | 0.6 | 2 | 5 | 11 |
| Days with low ≤ 32°F (days) | 0.9 | 0.4 | 0.0 | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 0.9 | 0.6 | 1.0 | 3 | 4 | 6 |
| Days with high ≥ 90°F (days) | 18 | 20 | 16 | 7 | 1.0 | — |
| Days with low ≤ 32°F (days) | — | — | — | — | 0.3 | 1 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 46 | 43 | 38 | 31 | 26 | 16 | 19 | 16 | 16 | 24 | 33 | 43 |
| Clear days (≤ 30% cloud) | 11 | 12 | 15 | 17 | 20 | 25 | 24 | 26 | 24 | 22 | 17 | 13 |
| Partly cloudy days (30–70%) | 12 | 9 | 11 | 9 | 9 | 4 | 5 | 5 | 4 | 6 | 9 | 11 |
| Cloudy days (≥ 70%) | 8 | 7 | 6 | 4 | 2 | 1 | 2 | 0.9 | 1 | 3 | 4 | 7 |
| Relative humidity (%) | 57 | 61 | 61 | 58 | 56 | 49 | 43 | 39 | 41 | 44 | 47 | 54 |
| Wind speed (mph) | 4.2 | 4.2 | 4.1 | 4.4 | 4.3 | 4.2 | 4.0 | 3.8 | 3.6 | 3.8 | 3.9 | 4.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 46 | 43 | 38 | 31 | 26 | 16 |
| Clear days (≤ 30% cloud) | 11 | 12 | 15 | 17 | 20 | 25 |
| Partly cloudy days (30–70%) | 12 | 9 | 11 | 9 | 9 | 4 |
| Cloudy days (≥ 70%) | 8 | 7 | 6 | 4 | 2 | 1 |
| Relative humidity (%) | 57 | 61 | 61 | 58 | 56 | 49 |
| Wind speed (mph) | 4.2 | 4.2 | 4.1 | 4.4 | 4.3 | 4.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 19 | 16 | 16 | 24 | 33 | 43 |
| Clear days (≤ 30% cloud) | 24 | 26 | 24 | 22 | 17 | 13 |
| Partly cloudy days (30–70%) | 5 | 5 | 4 | 6 | 9 | 11 |
| Cloudy days (≥ 70%) | 2 | 0.9 | 1 | 3 | 4 | 7 |
| Relative humidity (%) | 43 | 39 | 41 | 44 | 47 | 54 |
| Wind speed (mph) | 4.0 | 3.8 | 3.6 | 3.8 | 3.9 | 4.3 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Redlands (NOAA GHCN station USC00047306), about 14 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.