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Richmond, CA Weather by Month and Climate Averages
Monthly normals · Rain · Snow
Sunshine · Freeze dates · Records · Best time to visit
What is the weather like in Richmond, CA?
Richmond, CA gets 24.4 in of precipitation a year over about 54 rainy days. September is the warmest month (average high 75°F) and January the coldest (average low 44°F).
Mediterranean climate
Richmond, CA has warm summers and mild winters. Daytime highs range from about 58°F in January to 75°F in September. December is usually the wettest month. The most comfortable time to visit is typically March to November, when daytime highs sit near 70°F.
| Season | Months | Avg low | Avg high |
|---|---|---|---|
| Winter | Dec–Feb | 45° | 59° |
| Spring | Mar–May | 50° | 67° |
| Summer | Jun–Aug | 56° | 72° |
| Autumn | Sep–Nov | 53° | 71° |
How much rain does Richmond get?
Richmond gets 24.4 in of precipitation in an average year, spread over about 54 days with measurable rain. That is fewer rainy days than 79% of the US.
December is the wettest month, with 4.9 in. July is the driest, with 0.0 in. January has the most rainy days, about 10.
The longest dry spell in the last five years lasted 30 days, to October 31, 2022.
From September 2025 to August 2026 Richmond got 21.3 in of rain, against a normal of 24.4 in for those months. December 2025 had the most, with 5.4 in.
See where Richmond ranks: rainiest cities in the US, US cities with the most rainy days, rainiest cities in California.
Richmond weather by month
Richmond weather in January
In January, Richmond averages a high of 58°F and a low of 44°F. It gets 4.8 in of precipitation over about 10 rainy days. Estimated sunshine is 34% of daylight hours, derived from ERA5 cloud cover. The January record high is 78°F (2015) and the record low is 27°F (1982).
Richmond weather in February
In February, Richmond averages a high of 62°F and a low of 46°F. It gets 4.8 in of precipitation over about 9 rainy days. Estimated sunshine is 54% of daylight hours, derived from ERA5 cloud cover. The February record high is 81°F (2018) and the record low is 29°F (1989).
Richmond weather in March
In March, Richmond averages a high of 64°F and a low of 48°F. It gets 3.2 in of precipitation over about 9 rainy days. Estimated sunshine is 49% of daylight hours, derived from ERA5 cloud cover. The March record high is 88°F (2026) and the record low is 35°F (2011). March is one of the most comfortable months to visit.
Richmond weather in April
In April, Richmond averages a high of 67°F and a low of 50°F. It gets 1.6 in of precipitation over about 5 rainy days. Estimated sunshine is 61% of daylight hours, derived from ERA5 cloud cover. The April record high is 94°F (2004) and the record low is 31°F (1976). April is one of the most comfortable months to visit.
Richmond weather in May
In May, Richmond averages a high of 69°F and a low of 52°F. It gets 0.7 in of precipitation over about 3 rainy days. Estimated sunshine is 67% of daylight hours, derived from ERA5 cloud cover. The May record high is 100°F (1976) and the record low is 38°F (1977). May is one of the most comfortable months to visit.
Richmond weather in June
In June, Richmond averages a high of 72°F and a low of 54°F. It gets 0.3 in of precipitation over about 1 rainy days. Estimated sunshine is 69% of daylight hours, derived from ERA5 cloud cover. The June record high is 106°F (2000) and the record low is 43°F (1975). June is one of the most comfortable months to visit.
Richmond weather in July
In July, Richmond averages a high of 71°F and a low of 56°F. It gets 0.0 in of precipitation over about 0 rainy days. Estimated sunshine is 72% of daylight hours, derived from ERA5 cloud cover. The July record high is 98°F (1970) and the record low is 44°F (1984). July is one of the most comfortable months to visit.
Richmond weather in August
In August, Richmond averages a high of 72°F and a low of 57°F. It gets 0.1 in of precipitation over about 0 rainy days. Estimated sunshine is 72% of daylight hours, derived from ERA5 cloud cover. The August record high is 103°F (2010) and the record low is 44°F (1983). August is one of the most comfortable months to visit.
Richmond weather in September
In September, Richmond averages a high of 75°F and a low of 57°F. It gets 0.0 in of precipitation over about 0 rainy days. Estimated sunshine is 71% of daylight hours, derived from ERA5 cloud cover. The September record high is 107°F (1971) and the record low is 43°F (1983). September is one of the most comfortable months to visit.
Richmond weather in October
In October, Richmond averages a high of 73°F and a low of 54°F. It gets 1.4 in of precipitation over about 3 rainy days. Estimated sunshine is 66% of daylight hours, derived from ERA5 cloud cover. The October record high is 100°F (1980) and the record low is 41°F (1971). October is one of the most comfortable months to visit.
Richmond weather in November
In November, Richmond averages a high of 65°F and a low of 49°F. It gets 2.7 in of precipitation over about 6 rainy days. Estimated sunshine is 55% of daylight hours, derived from ERA5 cloud cover. The November record high is 89°F (2010) and the record low is 34°F (1985). November is one of the most comfortable months to visit.
Richmond weather in December
In December, Richmond averages a high of 58°F and a low of 45°F. It gets 4.9 in of precipitation over about 9 rainy days. Estimated sunshine is 33% of daylight hours, derived from ERA5 cloud cover. The December record high is 76°F (1979) and the record low is 24°F (1972).
Sunshine, humidity and wind in Richmond
July is the sunniest month in Richmond, with estimated sunshine of 72% of daylight hours from ERA5 cloud cover. December is the cloudiest, at 33%. The annual cloud-cover estimate is 59% of daylight hours; it is not a measurement of sunshine duration. Richmond is sunnier than 84% of the US.
Humidity peaks in December at 78% and is lowest in October at 54%.
Richmond has about 5 days a year above 90°F. Richmond is cooler than 90% of the US.
See where Richmond ranks: sunniest cities in the US, cloudiest cities in the US, hottest cities in the US.
Richmond weather records
These records cover RICHMOND during 1970–2026. Earlier records or other stations in the city may differ.
The hottest temperature on record at the Richmond station is 107°F, on September 14, 1971. The coldest is 24°F, on December 9, 1972.
The wettest day in the available station history brought 6.8 in of precipitation, on January 4, 1982.
21 all-time records have been set at the station since 1970.
The annual mean temperature has changed by +0.4°F per decade since 1970.
The best time to visit Richmond
The most comfortable time to visit is typically March to November, when daytime highs sit near 70°F.
Winter (December–February) is mild, with average highs around 59°F and lows near 45°F.
Spring (March–May) is mild, with average highs around 67°F and lows near 50°F.
Summer (June–August) is warm, with average highs around 72°F and lows near 56°F.
Autumn (September–November) is warm, with average highs around 71°F and lows near 53°F.
Monthly climate
| Month | Average low | Average high | Precip | Rain days | Humidity | Estimated sunshine | Record high | Record low |
|---|---|---|---|---|---|---|---|---|
| January | 44° | 58° | 4.8 in | 10 | 76% | 34% | 78° | 27° |
| February | 46° | 62° | 4.8 in | 9 | 64% | 54% | 81° | 29° |
| March | 48° | 64° | 3.2 in | 9 | 65% | 49% | 88° | 35° |
| April | 50° | 67° | 1.6 in | 5 | 60% | 61% | 94° | 31° |
| May | 52° | 69° | 0.72 in | 3 | 57% | 67% | 100° | 38° |
| June | 54° | 72° | 0.27 in | 1 | 57% | 69% | 106° | 43° |
| July | 56° | 71° | 0.00 in | 0 | 63% | 72% | 98° | 44° |
| August | 57° | 72° | 0.07 in | 0 | 62% | 72% | 103° | 44° |
| September | 57° | 75° | 0.03 in | 0 | 62% | 71% | 107° | 43° |
| October | 54° | 73° | 1.4 in | 3 | 54% | 66% | 100° | 41° |
| November | 49° | 65° | 2.7 in | 6 | 63% | 55% | 89° | 34° |
| December | 45° | 58° | 4.9 in | 9 | 78% | 33% | 76° | 24° |
Station: RICHMOND, 3 km from the city. Temperature normal baseline: 1991–2020, calculated from available NOAA GHCN-Daily observations. Available station history: 1970–2026; record values refer to this station and period, not the entire city’s history. Precipitation includes rain and the water equivalent of frozen precipitation; snowfall depth is shown separately when available. Sources and methods
From ERA5 reanalysis. Sunshine is estimated from cloud cover.
Richmond climate questions
How much rain does Richmond get?
Richmond gets 24.4 in of precipitation in an average year, over about 54 rainy days.
What is the wettest month in Richmond?
December is the wettest month in Richmond, with 4.9 in. July is the driest, with 0.0 in.
How many rainy days does Richmond have a year?
Richmond has about 54 days with measurable rain in an average year. January has the most, about 10.
What is the hottest month in Richmond?
September is the warmest month in Richmond, with an average high of 75°F.
What is the coldest month in Richmond?
January is the coldest month in Richmond, with an average low of 44°F.
What is the record high temperature in Richmond?
Within the available 1970–2026 station history, the record high at the Richmond station is 107°F, set on September 14, 1971. The record low is 24°F, on December 9, 1972.
What is the sunniest month in Richmond?
July is the sunniest month in Richmond, with estimated sunshine of 72% of daylight hours from ERA5 cloud cover. December is the cloudiest.
What is the best time to visit Richmond?
The most comfortable time to visit is typically March to November, when daytime highs sit near 70°F.