Rocklin Climate by Month
Rocklin, California, United States
Very hot summers and cool winters, with most rain from November to March.
Very hot summers and cool winters, with most rain from November to March: that's Rocklin's climate in short. Expect highs of 96°F (35°C) in July and 56°F (13°C) in January, with the coldest nights (December) near 39°F (4°C). Of the 22 in (548 mm) of rain in a typical year, 80% falls from November to March. June to September are almost completely dry.
- Warmest month
- 96°F(35°C)
- Average high, July
- Coldest nights
- 39°F(4°C)
- Average low, December
- Rain per year
- 22 in(548 mm)
- Wettest: December
- Humidity
- 55%
- Sunniest: July
Best and worst months in Rocklin
Best for weatherApril, May and October are the best time for weather in Rocklin: highs near 78°F (26°C) and about 1.3 in (33 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)
Rocklin weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 56°F(13°C) | 40°F(4°C) | 3.8 in(96 mm) | 79% | 1.7 |
| FebFebruary | 62°F(16°C) | 42°F(6°C) | 3.3 in(84 mm) | 68% | 2.6 |
| MarMarch | 66°F(19°C) | 45°F(7°C) | 3.2 in(81 mm) | 66% | 4.3 |
| AprAprilBest | 73°F(23°C) | 48°F(9°C) | 2.0 in(52 mm) | 56% | 5.5 |
| MayMayBest | 81°F(27°C) | 54°F(12°C) | 0.5 in(12 mm) | 48% | 6.5 |
| JunJune | 91°F(33°C) | 60°F(15°C) | 0.3 in(7 mm) | 40% | 7.7 |
| JulJuly | 96°F(35°C) | 63°F(17°C) | 0.0 in(1 mm) | 41% | 7.8 |
| AugAugust | 94°F(35°C) | 62°F(17°C) | 0.1 in(2 mm) | 40% | 6.9 |
| SepSeptember | 90°F(32°C) | 58°F(15°C) | 0.1 in(3 mm) | 41% | 5.7 |
| OctOctoberBest | 80°F(26°C) | 52°F(11°C) | 1.4 in(35 mm) | 47% | 3.9 |
| NovNovember | 65°F(18°C) | 44°F(6°C) | 2.9 in(73 mm) | 63% | 2.5 |
| DecDecember | 56°F(13°C) | 39°F(4°C) | 4.0 in(102 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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