West Covina Climate by Month
West Covina, California, United States
Hot summers and mild winters, with most rain from December to March.
Hot summers and mild winters, with most rain from December to March: that's West Covina's climate in short. August is the warmest month, with highs around 90°F (32°C); December is the coolest at 69°F (21°C), and nights dip to 44°F (6°C). Of the 14 in (353 mm) of rain in a typical year, 77% falls from December to March. May to September are almost completely dry.
- Warmest month
- 90°F(32°C)
- Average high, August
- Coldest nights
- 44°F(6°C)
- Average low, December
- Rain per year
- 14 in(353 mm)
- Wettest: February
- Humidity
- 49%
- Sunniest: June
Best and worst months in West Covina
Best for weatherThe most comfortable weather comes in April, May and November, with highs around 77°F (25°C) and about 0.7 in (19 mm) of rain a month.
Least pleasantAugust and September are the least pleasant; August is the hottest, with highs of 90°F (32°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 November.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
West Covina weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 70°F(21°C) | 45°F(7°C) | 3.0 in(76 mm) | 50% | 2.8 |
| FebFebruary | 70°F(21°C) | 46°F(8°C) | 3.3 in(83 mm) | 49% | 3.3 |
| MarMarch | 73°F(23°C) | 48°F(9°C) | 2.2 in(56 mm) | 55% | 4.8 |
| AprAprilBest | 76°F(25°C) | 51°F(11°C) | 1.0 in(26 mm) | 49% | 5.9 |
| MayMayBest | 78°F(26°C) | 56°F(13°C) | 0.2 in(5 mm) | 53% | 6.3 |
| JunJune | 83°F(28°C) | 60°F(15°C) | 0.1 in(2 mm) | 54% | 6.8 |
| JulJuly | 88°F(31°C) | 63°F(17°C) | 0.1 in(2 mm) | 53% | 6.8 |
| AugAugust | 90°F(32°C) | 64°F(18°C) | 0.0 in(1 mm) | 50% | 6.6 |
| SepSeptember | 89°F(31°C) | 62°F(17°C) | 0.2 in(4 mm) | 47% | 5.5 |
| OctOctober | 82°F(28°C) | 56°F(13°C) | 0.6 in(15 mm) | 45% | 4.1 |
| NovNovemberBest | 75°F(24°C) | 48°F(9°C) | 1.0 in(26 mm) | 42% | 3.2 |
| DecDecember | 69°F(21°C) | 44°F(6°C) | 2.2 in(57 mm) | 45% | 2.6 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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