- WinterDec–Feb47°68°
- December46°67°
- January47°68°
- February48°70°
- SpringMar–May52°76°
- March50°73°
- April52°77°
- May56°79°
- SummerJun–Aug62°88°
- June59°84°
- July63°89°
- August64°92°
- AutumnSep–Nov57°83°
- September63°90°
- October58°83°
- November51°75°
West Covina, CA Weather by Month and Climate Averages
West Covina, CA gets 20.1 in of precipitation a year over about 42 rainy days. August is the warmest month (average high 92°F) and December the coldest (average low 46°F).
West Covina climate at a glance
Mediterranean climate
West Covina, CA has hot summers and warm winters. Daytime highs range from about 67°F in December to 92°F in August. February is usually the wettest month. The most comfortable time to visit is typically January, March to May, and November to December, when daytime highs sit near 73°F.
How much rain does West Covina get?
West Covina gets 20.1 in of precipitation in an average year, spread over about 42 days with measurable rain. That is fewer rainy days than 87% of the US.
February is the wettest month, with 5.2 in. August is the driest, with 0.0 in. February has the most rainy days, about 8.
The longest dry spell in the last five years lasted 166 days, to November 22, 2024.
See where West Covina ranks: rainiest cities in the US, US cities with the most rainy days, rainiest cities in California.
West Covina weather by month
West Covina weather in January
In January, West Covina averages a high of 68°F and a low of 47°F. It gets 4.5 in of precipitation over about 7 rainy days. The sun is out about 54% of daylight hours. The January record high is 93°F (1971) and the record low is 29°F (1979). January is one of the most comfortable months to visit.
West Covina weather in February
In February, West Covina averages a high of 70°F and a low of 48°F. It gets 5.2 in of precipitation over about 8 rainy days. The sun is out about 61% of daylight hours. The February record high is 96°F (2026) and the record low is 27°F (1990).
West Covina weather in March
In March, West Covina averages a high of 73°F and a low of 50°F. It gets 3.0 in of precipitation over about 6 rainy days. The sun is out about 50% of daylight hours. The March record high is 101°F (2026) and the record low is 32°F (1990). March is one of the most comfortable months to visit.
West Covina weather in April
In April, West Covina averages a high of 77°F and a low of 52°F. It gets 1.1 in of precipitation over about 3 rainy days. The sun is out about 57% of daylight hours. The April record high is 105°F (1989) and the record low is 35°F (1975). April is one of the most comfortable months to visit.
West Covina weather in May
In May, West Covina averages a high of 79°F and a low of 56°F. It gets 0.5 in of precipitation over about 3 rainy days. The sun is out about 58% of daylight hours. The May record high is 104°F (2014) and the record low is 38°F (1990). May is one of the most comfortable months to visit.
West Covina weather in June
In June, West Covina averages a high of 84°F and a low of 59°F. It gets 0.2 in of precipitation over about 2 rainy days. The sun is out about 66% of daylight hours. The June record high is 110°F (1990) and the record low is 41°F (1998).
West Covina weather in July
In July, West Covina averages a high of 89°F and a low of 63°F. It gets 0.1 in of precipitation over about 1 rainy days. The sun is out about 78% of daylight hours. The July record high is 113°F (2018) and the record low is 47°F (1983).
West Covina weather in August
In August, West Covina averages a high of 92°F and a low of 64°F. It gets 0.0 in of precipitation over about 0 rainy days. The sun is out about 78% of daylight hours. The August record high is 109°F (2020) and the record low is 50°F (1990).
West Covina weather in September
In September, West Covina averages a high of 90°F and a low of 63°F. It gets 0.2 in of precipitation over about 1 rainy days. The sun is out about 74% of daylight hours. The September record high is 115°F (2020) and the record low is 46°F (1987).
West Covina weather in October
In October, West Covina averages a high of 83°F and a low of 58°F. It gets 0.8 in of precipitation over about 3 rainy days. The sun is out about 71% of daylight hours. The October record high is 108°F (1991) and the record low is 37°F (1971).
West Covina weather in November
In November, West Covina averages a high of 75°F and a low of 51°F. It gets 1.1 in of precipitation over about 3 rainy days. The sun is out about 68% of daylight hours. The November record high is 101°F (2010) and the record low is 31°F (1976). November is one of the most comfortable months to visit.
West Covina weather in December
In December, West Covina averages a high of 67°F and a low of 46°F. It gets 3.3 in of precipitation over about 6 rainy days. The sun is out about 50% of daylight hours. The December record high is 88°F (2021) and the record low is 26°F (1990). December is one of the most comfortable months to visit.
Sunshine, humidity and wind in West Covina
July is the sunniest month in West Covina, with sunshine about 78% of daylight hours. March is the cloudiest, at 50%. Over the year the sun shines about 64% of daylight hours. West Covina is sunnier than 91% of the US.
Humidity peaks in May at 62% and is lowest in November at 41%.
West Covina has about 70 days a year above 90°F. West Covina is hotter than 80% of the US.
Thunderstorms occur on about 4 days a year.
See where West Covina ranks: sunniest cities in the US, cloudiest cities in the US, hottest cities in the US.
West Covina weather records
The hottest temperature on record at the West Covina station is 115°F, on September 6, 2020. The coldest is 26°F, on December 22, 1990.
The wettest day on record brought 5.5 in of rain, on November 29, 1970.
31 all-time records have been set at the station since 1970.
The annual mean temperature has changed by +0.7°F per decade since 1970.
The best time to visit West Covina
The most comfortable time to visit is typically January, March to May, and November to December, when daytime highs sit near 73°F.
Winter (December–February) is warm, with average highs around 68°F and lows near 47°F.
Spring (March–May) is warm, with average highs around 76°F and lows near 52°F.
Summer (June–August) is hot, with average highs around 88°F and lows near 62°F.
Autumn (September–November) is hot, with average highs around 83°F and lows near 57°F.
Monthly climate
| Month | Precip | Rain days | Humidity | Sunshine | Sea temp | Record high | Record low |
|---|---|---|---|---|---|---|---|
| January | 4.5 in | 7 | 56% | 54% | 59° | 93° | 29° |
| February | 5.2 in | 8 | 47% | 61% | 58° | 96° | 27° |
| March | 3.0 in | 6 | 59% | 50% | 58° | 101° | 32° |
| April | 1.1 in | 3 | 60% | 57% | 59° | 105° | 35° |
| May | 0.48 in | 3 | 62% | 58% | 62° | 104° | 38° |
| June | 0.21 in | 2 | 58% | 66% | 64° | 110° | 41° |
| July | 0.06 in | 1 | 55% | 78% | 67° | 113° | 47° |
| August | 0.03 in | 0 | 53% | 78% | 69° | 109° | 50° |
| September | 0.22 in | 1 | 54% | 74% | 68° | 115° | 46° |
| October | 0.84 in | 3 | 49% | 71% | 66° | 108° | 37° |
| November | 1.1 in | 3 | 41% | 68% | 62° | 101° | 31° |
| December | 3.3 in | 6 | 51% | 50% | 60° | 88° | 26° |
From ERA5 reanalysis. Sunshine is estimated from cloud cover.
West Covina climate questions
How much rain does West Covina get?
West Covina gets 20.1 in of precipitation in an average year, over about 42 rainy days.
What is the wettest month in West Covina?
February is the wettest month in West Covina, with 5.2 in. August is the driest, with 0.0 in.
How many rainy days does West Covina have a year?
West Covina has about 42 days with measurable rain in an average year. February has the most, about 8.
What is the hottest month in West Covina?
August is the warmest month in West Covina, with an average high of 92°F.
What is the coldest month in West Covina?
December is the coldest month in West Covina, with an average low of 46°F.
What is the record high temperature in West Covina?
The record high at the West Covina station is 115°F, set on September 6, 2020. The record low is 26°F, on December 22, 1990.
What is the sunniest month in West Covina?
July is the sunniest month in West Covina, with sunshine about 78% of daylight hours. March is the cloudiest.
What is the best time to visit West Covina?
The most comfortable time to visit is typically January, March to May, and November to December, when daytime highs sit near 73°F.
Source: NOAA GHCN-Daily station PASADENA (21 km away).
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Climate for places near West Covina, CA
Normals from NOAA GHCN-Daily station PASADENA.