Yucaipa Climate by Month
Yucaipa, California, United States
Very hot summers and cool winters, with little rain, mostly from December to April.
Yucaipa has very hot summers and cool winters, with little rain, mostly from December to April. Afternoon highs range from 64°F (18°C) in January to 96°F (36°C) in August, and December nights average 38°F (4°C). It gets only 12 in (295 mm) of rain a year. May to September are almost completely dry. The air is dry, averaging 40% relative humidity.
- Warmest month
- 96°F(36°C)
- Average high, August
- Coldest nights
- 38°F(4°C)
- Average low, December
- Rain per year
- 12 in(295 mm)
- Wettest: February
- Humidity
- 40%
- Sunniest: June
Best and worst months in Yucaipa
Best for weatherThe most comfortable weather comes in April, May and November, with highs around 76°F (24°C) and about 0.8 in (20 mm) of rain a month.
Least pleasantJuly and August are the least pleasant; August is the hottest, with highs of 96°F (36°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in April.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Yucaipa weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 64°F(18°C) | 39°F(4°C) | 2.0 in(52 mm) | 46% | 3.0 |
| FebFebruary | 65°F(18°C) | 39°F(4°C) | 2.4 in(62 mm) | 45% | 3.6 |
| MarMarch | 68°F(20°C) | 42°F(5°C) | 1.7 in(42 mm) | 47% | 5.1 |
| AprAprilBest | 74°F(24°C) | 44°F(7°C) | 1.1 in(28 mm) | 41% | 6.1 |
| MayMayBest | 80°F(27°C) | 49°F(10°C) | 0.4 in(9 mm) | 43% | 6.8 |
| JunJune | 88°F(31°C) | 54°F(12°C) | 0.1 in(2 mm) | 39% | 7.4 |
| JulJuly | 94°F(35°C) | 59°F(15°C) | 0.2 in(4 mm) | 38% | 7.1 |
| AugAugust | 96°F(36°C) | 62°F(16°C) | 0.2 in(5 mm) | 35% | 6.8 |
| SepSeptember | 92°F(34°C) | 58°F(14°C) | 0.3 in(8 mm) | 37% | 5.7 |
| OctOctober | 83°F(29°C) | 50°F(10°C) | 0.5 in(13 mm) | 36% | 4.4 |
| NovNovemberBest | 73°F(23°C) | 43°F(6°C) | 0.9 in(22 mm) | 37% | 3.4 |
| DecDecember | 65°F(18°C) | 38°F(4°C) | 1.9 in(48 mm) | 39% | 2.8 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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