Willowbrook Climate by Month
Willowbrook, California, United States
Warm summers and mild winters, with little rain, mostly from December to March.
Willowbrook has warm summers and mild winters, with little rain, mostly from December to March. Afternoon highs range from 70°F (21°C) in December to 85°F (30°C) in August, and December nights average 47°F (8°C). It gets only 12 in (311 mm) of rain a year. May to September are almost completely dry.
- Warmest month
- 85°F(30°C)
- Average high, August
- Coldest nights
- 47°F(8°C)
- Average low, December
- Rain per year
- 12 in(311 mm)
- Wettest: February
- Humidity
- 55%
- Sunniest: July
Best and worst months in Willowbrook
Best for weatherThe most comfortable weather comes in April, May and November, with highs around 75°F (24°C) and about 0.7 in (17 mm) of rain a month.
Least pleasantFebruary and August are the least pleasant; February is the wettest, with 2.9 in (73 mm) of rain.
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 May.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Willowbrook weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 70°F(21°C) | 48°F(9°C) | 2.7 in(68 mm) | 53% | 2.7 |
| FebFebruary | 70°F(21°C) | 49°F(9°C) | 2.9 in(73 mm) | 52% | 3.3 |
| MarMarch | 72°F(22°C) | 50°F(10°C) | 1.9 in(49 mm) | 55% | 4.7 |
| AprAprilBest | 74°F(24°C) | 53°F(11°C) | 0.9 in(23 mm) | 55% | 5.9 |
| MayMayBest | 76°F(24°C) | 57°F(14°C) | 0.2 in(5 mm) | 59% | 6.2 |
| JunJune | 79°F(26°C) | 60°F(16°C) | 0.1 in(2 mm) | 61% | 6.6 |
| JulJuly | 83°F(28°C) | 64°F(18°C) | 0.1 in(2 mm) | 61% | 6.6 |
| AugAugust | 85°F(30°C) | 64°F(18°C) | 0.0 in(1 mm) | 58% | 6.5 |
| SepSeptember | 85°F(29°C) | 62°F(17°C) | 0.1 in(3 mm) | 57% | 5.4 |
| OctOctober | 81°F(27°C) | 58°F(14°C) | 0.5 in(12 mm) | 53% | 4.0 |
| NovNovemberBest | 75°F(24°C) | 52°F(11°C) | 0.9 in(24 mm) | 50% | 3.2 |
| DecDecember | 70°F(21°C) | 47°F(8°C) | 1.9 in(49 mm) | 48% | 2.5 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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