Lafayette, California Climate by Month
Lafayette, California, United States
Warm summers and cool winters, with most rain from December to March.
Lafayette has warm summers and cool winters, with most rain from December to March. Afternoon highs range from 56°F (14°C) in January to 83°F (28°C) in August, and January nights average 41°F (5°C). It gets 22 in (555 mm) of rain a year, 73% of it from December to March. June to September are almost completely dry.
- Warmest month
- 83°F(28°C)
- Average high, August
- Coldest nights
- 41°F(5°C)
- Average low, January
- Rain per year
- 22 in(555 mm)
- Wettest: January
- Humidity
- 64%
- Sunniest: June
Best and worst months in Lafayette
Best for weatherMay, June and October are the best time for weather in Lafayette: highs near 76°F (24°C) and about 0.6 in (16 mm) of rain a month.
Least pleasantDecember and January are the least pleasant; January is the coldest, with highs of only 56°F (14°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 October.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Lafayette weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 56°F(14°C) | 41°F(5°C) | 4.6 in(116 mm) | 77% | 1.8 |
| FebFebruary | 60°F(16°C) | 43°F(6°C) | 4.3 in(109 mm) | 76% | 2.7 |
| MarMarch | 64°F(18°C) | 45°F(7°C) | 3.0 in(75 mm) | 69% | 4.2 |
| AprApril | 69°F(20°C) | 47°F(8°C) | 1.5 in(38 mm) | 61% | 5.5 |
| MayMayBest | 73°F(23°C) | 50°F(10°C) | 0.7 in(17 mm) | 59% | 6.4 |
| JunJuneBest | 79°F(26°C) | 54°F(12°C) | 0.2 in(4 mm) | 59% | 7.4 |
| JulJuly | 82°F(28°C) | 56°F(13°C) | 0.0 in(1 mm) | 59% | 7.3 |
| AugAugust | 83°F(28°C) | 56°F(13°C) | 0.0 in(1 mm) | 57% | 6.6 |
| SepSeptember | 82°F(28°C) | 55°F(13°C) | 0.1 in(2 mm) | 55% | 5.5 |
| OctOctoberBest | 76°F(25°C) | 51°F(11°C) | 1.1 in(28 mm) | 55% | 3.9 |
| NovNovember | 65°F(18°C) | 45°F(7°C) | 2.4 in(60 mm) | 68% | 2.5 |
| DecDecember | 57°F(14°C) | 41°F(5°C) | 4.1 in(104 mm) | 76% | 1.7 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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