Antioch Climate by Month
Antioch, California, United States
Hot summers and cool winters, with little rain, mostly from December to March.
Antioch has hot summers and cool winters, with little rain, mostly from December to March. Expect highs of 87°F (31°C) in July and 56°F (13°C) in January, with the coldest nights (December) near 40°F (5°C). It gets only 13 in (341 mm) of rain a year. June to September are almost completely dry.
- Warmest month
- 87°F(31°C)
- Average high, July
- Coldest nights
- 40°F(5°C)
- Average low, December
- Rain per year
- 13 in(341 mm)
- Wettest: January
- Humidity
- 62%
- Sunniest: June
Best and worst months in Antioch
Best for weatherApril, May and October are the best time for weather in Antioch: highs near 76°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 (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 May.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Antioch weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 56°F(13°C) | 40°F(5°C) | 2.9 in(74 mm) | 79% | 1.8 |
| FebFebruary | 62°F(17°C) | 43°F(6°C) | 2.5 in(64 mm) | 75% | 2.7 |
| MarMarch | 67°F(19°C) | 46°F(8°C) | 1.6 in(40 mm) | 65% | 4.3 |
| AprAprilBest | 73°F(23°C) | 48°F(9°C) | 1.0 in(25 mm) | 62% | 5.5 |
| MayMayBest | 78°F(26°C) | 52°F(11°C) | 0.4 in(10 mm) | 57% | 6.5 |
| JunJune | 85°F(29°C) | 56°F(14°C) | 0.2 in(4 mm) | 51% | 7.6 |
| JulJuly | 87°F(31°C) | 57°F(14°C) | 0.0 in(0 mm) | 52% | 7.5 |
| AugAugust | 87°F(31°C) | 57°F(14°C) | 0.0 in(1 mm) | 52% | 6.7 |
| SepSeptember | 85°F(30°C) | 56°F(13°C) | 0.0 in(1 mm) | 55% | 5.6 |
| OctOctoberBest | 78°F(26°C) | 51°F(11°C) | 0.8 in(21 mm) | 53% | 3.9 |
| NovNovember | 66°F(19°C) | 45°F(7°C) | 1.5 in(38 mm) | 67% | 2.6 |
| DecDecember | 56°F(14°C) | 40°F(5°C) | 2.5 in(63 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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