Folsom Climate by Month
Folsom, California, United States
Hot summers and cool winters, with most rain from November to March.
Folsom has hot summers and cool winters, with most rain from November to March. Expect highs of 95°F (35°C) in July and 56°F (13°C) in December, with the coldest nights (December) near 40°F (4°C). It gets 21 in (531 mm) of rain a year, 80% of it from November to March. June to September are almost completely dry.
- Warmest month
- 95°F(35°C)
- Average high, July
- Coldest nights
- 40°F(4°C)
- Average low, December
- Rain per year
- 21 in(531 mm)
- Wettest: December
- Humidity
- 55%
- Sunniest: July
Best and worst months in Folsom
Best for weatherThe most comfortable weather comes in April, May and October, with highs around 78°F (25°C) and about 1.2 in (32 mm) of rain a month.
Least pleasantDecember and January are the least pleasant; January is the coldest, with highs of only 56°F (13°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)
Folsom weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 56°F(13°C) | 40°F(5°C) | 3.6 in(92 mm) | 79% | 1.7 |
| FebFebruary | 62°F(16°C) | 42°F(6°C) | 3.2 in(82 mm) | 68% | 2.6 |
| MarMarch | 66°F(19°C) | 45°F(7°C) | 3.3 in(85 mm) | 66% | 4.3 |
| AprAprilBest | 73°F(23°C) | 48°F(9°C) | 1.9 in(49 mm) | 56% | 5.5 |
| MayMayBest | 81°F(27°C) | 54°F(12°C) | 0.5 in(13 mm) | 48% | 6.5 |
| JunJune | 90°F(32°C) | 59°F(15°C) | 0.3 in(7 mm) | 41% | 7.7 |
| JulJuly | 95°F(35°C) | 63°F(17°C) | 0.0 in(1 mm) | 42% | 7.8 |
| AugAugust | 94°F(34°C) | 62°F(16°C) | 0.0 in(1 mm) | 40% | 6.9 |
| SepSeptember | 90°F(32°C) | 58°F(15°C) | 0.1 in(3 mm) | 42% | 5.7 |
| OctOctoberBest | 79°F(26°C) | 52°F(11°C) | 1.3 in(33 mm) | 47% | 3.9 |
| NovNovember | 65°F(18°C) | 44°F(7°C) | 2.8 in(70 mm) | 62% | 2.5 |
| DecDecember | 56°F(13°C) | 40°F(4°C) | 3.7 in(95 mm) | 71% | 1.6 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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