Richmond, California Climate by Month
Richmond, California, United States
Warm summers and mild winters, with most rain from December to March.
The climate in Richmond is one of warm summers and mild winters, with most rain from December to March. Expect highs of 81°F (27°C) in September and 59°F (15°C) in January, with the coldest nights (December) near 43°F (6°C). Of the 30 in (757 mm) of rain in a typical year, 73% falls from December to March. June to September are almost completely dry.
- Warmest month
- 81°F(27°C)
- Average high, September
- Coldest nights
- 43°F(6°C)
- Average low, December
- Rain per year
- 30 in(757 mm)
- Wettest: January
- Humidity
- 67%
- Sunniest: June
Best and worst months in Richmond
Best for weatherThe most comfortable weather comes from May to July, with highs around 77°F (25°C) and almost no rain.
Least pleasantDecember and January are the least pleasant; January is the coldest, with highs of only 59°F (15°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 May.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Richmond weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 59°F(15°C) | 43°F(6°C) | 6.0 in(153 mm) | 79% | 1.9 |
| FebFebruary | 63°F(17°C) | 45°F(7°C) | 5.8 in(148 mm) | 70% | 2.6 |
| MarMarch | 66°F(19°C) | 46°F(8°C) | 4.0 in(101 mm) | 71% | 4.2 |
| AprApril | 70°F(21°C) | 47°F(9°C) | 1.9 in(49 mm) | 65% | 5.4 |
| MayMayBest | 74°F(23°C) | 51°F(11°C) | 1.0 in(25 mm) | 63% | 6.3 |
| JunJuneBest | 78°F(26°C) | 54°F(12°C) | 0.2 in(6 mm) | 59% | 7.3 |
| JulJulyBest | 80°F(27°C) | 55°F(13°C) | 0.0 in(1 mm) | 61% | 7.1 |
| AugAugust | 81°F(27°C) | 56°F(13°C) | 0.0 in(1 mm) | 64% | 6.4 |
| SepSeptember | 81°F(27°C) | 55°F(13°C) | 0.1 in(3 mm) | 60% | 5.4 |
| OctOctober | 77°F(25°C) | 52°F(11°C) | 1.4 in(36 mm) | 58% | 3.8 |
| NovNovember | 67°F(19°C) | 46°F(8°C) | 3.2 in(81 mm) | 70% | 2.5 |
| DecDecember | 59°F(15°C) | 43°F(6°C) | 6.0 in(153 mm) | 78% | 1.7 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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