Modesto, CA Weather by Month and Climate Averages

How much rain does Modesto get?

Modesto gets 12.3 in of precipitation in an average year, spread over about 53 days with measurable rain. That is fewer rainy days than 80% of the US.

January is the wettest month, with 2.6 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 179 days, to October 30, 2024.

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

Modesto weather by month

Modesto weather in January

In January, Modesto averages a high of 56°F and a low of 40°F. It gets 2.6 in of precipitation over about 10 rainy days. The sun is out about 39% of daylight hours. The January record high is 75°F (1998) and the record low is 23°F (2007).

Modesto weather in February

In February, Modesto averages a high of 62°F and a low of 43°F. It gets 2.2 in of precipitation over about 9 rainy days. The sun is out about 60% of daylight hours. The February record high is 80°F (1992) and the record low is 24°F (1972). February is one of the most comfortable months to visit.

Modesto weather in March

In March, Modesto averages a high of 68°F and a low of 46°F. It gets 1.8 in of precipitation over about 8 rainy days. The sun is out about 52% of daylight hours. The March record high is 91°F (2026) and the record low is 27°F (1971). March is one of the most comfortable months to visit.

Modesto weather in April

In April, Modesto averages a high of 74°F and a low of 49°F. It gets 1.0 in of precipitation over about 5 rainy days. The sun is out about 67% of daylight hours. The April record high is 100°F (1981) and the record low is 32°F (1999). April is one of the most comfortable months to visit.

Modesto weather in May

In May, Modesto averages a high of 82°F and a low of 55°F. It gets 0.7 in of precipitation over about 3 rainy days. The sun is out about 77% of daylight hours. The May record high is 107°F (2009) and the record low is 39°F (1984).

Modesto weather in June

In June, Modesto averages a high of 90°F and a low of 60°F. It gets 0.1 in of precipitation over about 1 rainy days. The sun is out about 81% of daylight hours. The June record high is 111°F (2009) and the record low is 43°F (1971).

Modesto weather in July

In July, Modesto averages a high of 95°F and a low of 64°F. It gets 0.0 in of precipitation over about 0 rainy days. The sun is out about 91% of daylight hours. The July record high is 113°F (2006) and the record low is 51°F (1977).

Modesto weather in August

In August, Modesto averages a high of 94°F and a low of 63°F. It gets 0.0 in of precipitation over about 0 rainy days. The sun is out about 88% of daylight hours. The August record high is 111°F (2020) and the record low is 49°F (1973).

Modesto weather in September

In September, Modesto averages a high of 89°F and a low of 59°F. It gets 0.1 in of precipitation over about 0 rainy days. The sun is out about 87% of daylight hours. The September record high is 112°F (2022) and the record low is 44°F (1971).

Modesto weather in October

In October, Modesto averages a high of 79°F and a low of 52°F. It gets 0.6 in of precipitation over about 2 rainy days. The sun is out about 78% of daylight hours. The October record high is 104°F (2024) and the record low is 33°F (1971). October is one of the most comfortable months to visit.

Modesto weather in November

In November, Modesto averages a high of 66°F and a low of 44°F. It gets 1.1 in of precipitation over about 6 rainy days. The sun is out about 59% of daylight hours. The November record high is 88°F (1997) and the record low is 27°F (2003). November is one of the most comfortable months to visit.

Modesto weather in December

In December, Modesto averages a high of 56°F and a low of 39°F. It gets 2.2 in of precipitation over about 9 rainy days. The sun is out about 38% of daylight hours. The December record high is 75°F (1977) and the record low is 19°F (1990).

Sunshine, humidity and wind in Modesto

July is the sunniest month in Modesto, with sunshine about 91% of daylight hours. December is the cloudiest, at 38%. Over the year the sun shines about 68% of daylight hours. Modesto is sunnier than 96% of the US.

Humidity peaks in December at 77% and is lowest in June at 38%.

Wind averages 7 mph over the year, and June is the windiest month at 9 mph.

Modesto has about 86 days a year above 90°F. Modesto is hotter than 88% of the US.

Thunderstorms occur on about 4 days a year.

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

First and last freeze in Modesto

The first fall freeze in Modesto typically comes around December 4, and the last spring freeze around February 5. That leaves a frost-free growing season of about 302 days.

Modesto weather records

The hottest temperature on record at the Modesto station is 113°F, on July 23, 2006. The coldest is 19°F, on December 22, 1990.

The wettest day on record brought 2.7 in of rain, on March 4, 1978.

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

The annual mean temperature has changed by +0.5°F per decade since 1970.

The best time to visit Modesto

The most comfortable time to visit is typically February to April and October to November, when daytime highs sit near 70°F.

Winter (December–February) is mild, with average highs around 58°F and lows near 40°F.

Spring (March–May) is warm, with average highs around 75°F and lows near 50°F.

Summer (June–August) is hot, with average highs around 93°F and lows near 62°F.

Autumn (September–November) is warm, with average highs around 78°F and lows near 52°F.

Modesto climate questions

How much rain does Modesto get?

Modesto gets 12.3 in of precipitation in an average year, over about 53 rainy days.

What is the wettest month in Modesto?

January is the wettest month in Modesto, with 2.6 in. July is the driest, with 0.0 in.

How many rainy days does Modesto have a year?

Modesto has about 53 days with measurable rain in an average year. January has the most, about 10.

What is the hottest month in Modesto?

July is the warmest month in Modesto, with an average high of 95°F.

What is the coldest month in Modesto?

December is the coldest month in Modesto, with an average low of 39°F.

What is the record high temperature in Modesto?

The record high at the Modesto station is 113°F, set on July 23, 2006. The record low is 19°F, on December 22, 1990.

What is the sunniest month in Modesto?

July is the sunniest month in Modesto, with sunshine about 91% of daylight hours. December is the cloudiest.

When is the first frost in Modesto?

The first fall freeze in Modesto typically comes around December 4. The last spring freeze is around February 5.

What is the best time to visit Modesto?

The most comfortable time to visit is typically February to April and October to November, when daytime highs sit near 70°F.