Oakley Climate by Month
Oakley, California, United States
Hot summers and cool winters, with little rain, mostly from December to March.
Hot summers and cool winters, with little rain, mostly from December to March: that's Oakley's climate in short. Afternoon highs range from 56°F (14°C) in January to 90°F (32°C) in July, and December nights average 39°F (4°C). It gets only 13 in (331 mm) of rain a year. June to September are almost completely dry.
- Warmest month
- 90°F(32°C)
- Average high, July
- Coldest nights
- 39°F(4°C)
- Average low, December
- Rain per year
- 13 in(331 mm)
- Wettest: January
- Humidity
- 60%
- Sunniest: June
Best and worst months in Oakley
Best for weatherApril, May and October are the best time for weather in Oakley: highs near 78°F (25°C) and about 0.7 in (19 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 April.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Oakley weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 56°F(14°C) | 40°F(4°C) | 2.8 in(70 mm) | 79% | 1.8 |
| FebFebruary | 62°F(17°C) | 42°F(6°C) | 2.4 in(61 mm) | 75% | 2.7 |
| MarMarch | 67°F(20°C) | 45°F(7°C) | 1.7 in(42 mm) | 65% | 4.3 |
| AprAprilBest | 73°F(23°C) | 47°F(9°C) | 1.0 in(26 mm) | 56% | 5.5 |
| MayMayBest | 80°F(27°C) | 52°F(11°C) | 0.4 in(10 mm) | 51% | 6.5 |
| JunJune | 87°F(30°C) | 57°F(14°C) | 0.2 in(4 mm) | 49% | 7.6 |
| JulJuly | 90°F(32°C) | 58°F(14°C) | 0.0 in(0 mm) | 49% | 7.5 |
| AugAugust | 90°F(32°C) | 57°F(14°C) | 0.0 in(1 mm) | 49% | 6.8 |
| SepSeptember | 88°F(31°C) | 56°F(13°C) | 0.0 in(1 mm) | 49% | 5.6 |
| OctOctoberBest | 80°F(26°C) | 51°F(10°C) | 0.8 in(20 mm) | 52% | 3.9 |
| NovNovember | 66°F(19°C) | 44°F(6°C) | 1.4 in(36 mm) | 68% | 2.5 |
| DecDecember | 57°F(14°C) | 39°F(4°C) | 2.4 in(60 mm) | 79% | 1.7 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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