Antioch, CA Weather by Month and Climate Averages

How much rain does Antioch get?

Antioch gets 12.6 in of precipitation in an average year, spread over about 50 days with measurable rain. That is fewer rainy days than 82% of the US.

January is the wettest month, with 2.7 in. July is the driest, with 0.0 in. January has the most rainy days, about 11.

See where Antioch ranks: rainiest cities in the US, US cities with the most rainy days, rainiest cities in California.

Antioch weather by month

Antioch weather in January

In January, Antioch averages a high of 56°F and a low of 40°F. It gets 2.7 in of precipitation over about 11 rainy days. The sun is out about 35% of daylight hours. The January record high is 79°F (2012) and the record low is 21°F (1979).

Antioch weather in February

In February, Antioch averages a high of 61°F and a low of 43°F. It gets 2.4 in of precipitation over about 9 rainy days. The sun is out about 56% of daylight hours. The February record high is 79°F (2011) and the record low is 25°F (1989).

Antioch weather in March

In March, Antioch averages a high of 67°F and a low of 46°F. It gets 1.9 in of precipitation over about 8 rainy days. The sun is out about 50% of daylight hours. The March record high is 88°F (1988) and the record low is 28°F (1971). March is one of the most comfortable months to visit.

Antioch weather in April

In April, Antioch averages a high of 72°F and a low of 49°F. It gets 0.9 in of precipitation over about 4 rainy days. The sun is out about 63% of daylight hours. The April record high is 94°F (2011) and the record low is 29°F (1982). April is one of the most comfortable months to visit.

Antioch weather in May

In May, Antioch averages a high of 79°F and a low of 54°F. It gets 0.4 in of precipitation over about 3 rainy days. The sun is out about 71% of daylight hours. The May record high is 104°F (2011) and the record low is 32°F (2011). May is one of the most comfortable months to visit.

Antioch weather in June

In June, Antioch averages a high of 87°F and a low of 58°F. It gets 0.1 in of precipitation over about 1 rainy days. The sun is out about 74% of daylight hours. The June record high is 111°F (2011) and the record low is 35°F (1982).

Antioch weather in July

In July, Antioch averages a high of 91°F and a low of 60°F. It gets 0.0 in of precipitation over about 0 rainy days. The sun is out about 81% of daylight hours. The July record high is 110°F (1972) and the record low is 41°F (1982).

Antioch weather in August

In August, Antioch averages a high of 90°F and a low of 60°F. It gets 0.0 in of precipitation over about 0 rainy days. The sun is out about 79% of daylight hours. The August record high is 109°F (1998) and the record low is 40°F (1983).

Antioch weather in September

In September, Antioch averages a high of 87°F and a low of 58°F. It gets 0.1 in of precipitation over about 0 rainy days. The sun is out about 79% of daylight hours. The September record high is 110°F (2020) and the record low is 41°F (1980).

Antioch weather in October

In October, Antioch averages a high of 78°F and a low of 54°F. It gets 0.4 in of precipitation over about 1 rainy days. The sun is out about 70% of daylight hours. The October record high is 101°F (1980) and the record low is 28°F (1971). October is one of the most comfortable months to visit.

Antioch weather in November

In November, Antioch averages a high of 65°F and a low of 46°F. It gets 1.2 in of precipitation over about 5 rainy days. The sun is out about 55% of daylight hours. The November record high is 87°F (2011) and the record low is 24°F (2010). November is one of the most comfortable months to visit.

Antioch weather in December

In December, Antioch averages a high of 56°F and a low of 40°F. It gets 2.5 in of precipitation over about 9 rainy days. The sun is out about 34% of daylight hours. The December record high is 75°F (1977) and the record low is 18°F (1972).

Sunshine, humidity and wind in Antioch

July is the sunniest month in Antioch, with sunshine about 81% of daylight hours. December is the cloudiest, at 34%. Over the year the sun shines about 62% of daylight hours. Antioch is sunnier than 89% of the US.

Humidity peaks in December at 78% and is lowest in May at 53%.

Antioch has about 56 days a year above 90°F. Antioch is hotter than 72% of the US.

See where Antioch ranks: sunniest cities in the US, cloudiest cities in the US, hottest cities in the US.

First and last freeze in Antioch

The first fall freeze in Antioch typically comes around December 3, and the last spring freeze around January 31. That leaves a frost-free growing season of about 306 days.

Antioch weather records

The hottest temperature on record at the Antioch station is 111°F, on June 16, 2011. The coldest is 18°F, on December 11, 1972.

The wettest day on record brought 2.8 in of rain, on December 11, 2014.

37 all-time records have been set at the station since 1970.

The annual mean temperature has changed by +0.8°F per decade since 1970.

The best time to visit Antioch

The most comfortable time to visit is typically March to May and October to November, when daytime highs sit near 72°F.

Winter (December–February) is mild, with average highs around 58°F and lows near 41°F.

Spring (March–May) is warm, with average highs around 73°F and lows near 50°F.

Summer (June–August) is hot, with average highs around 89°F and lows near 59°F.

Autumn (September–November) is warm, with average highs around 76°F and lows near 52°F.

Antioch climate questions

How much rain does Antioch get?

Antioch gets 12.6 in of precipitation in an average year, over about 50 rainy days.

What is the wettest month in Antioch?

January is the wettest month in Antioch, with 2.7 in. July is the driest, with 0.0 in.

How many rainy days does Antioch have a year?

Antioch has about 50 days with measurable rain in an average year. January has the most, about 11.

What is the hottest month in Antioch?

July is the warmest month in Antioch, with an average high of 91°F.

What is the coldest month in Antioch?

January is the coldest month in Antioch, with an average low of 40°F.

What is the record high temperature in Antioch?

The record high at the Antioch station is 111°F, set on June 16, 2011. The record low is 18°F, on December 11, 1972.

What is the sunniest month in Antioch?

July is the sunniest month in Antioch, with sunshine about 81% of daylight hours. December is the cloudiest.

When is the first frost in Antioch?

The first fall freeze in Antioch typically comes around December 3. The last spring freeze is around January 31.

What is the best time to visit Antioch?

The most comfortable time to visit is typically March to May and October to November, when daytime highs sit near 72°F.