Monthly weather forecast and climate
Grass Valley, CA

How many days does it rain in Grass Valley?

Throughout the year, there are 84.6 rainfall days, and 53.2" (1352.4mm) of precipitation is accumulated.

What is the wettest month in Grass Valley?

January is the month with the most rainfall in Grass Valley, California. Rain falls for 13.1 days and accumulates 9.7" (246.1mm) of precipitation.

When does it snow in Grass Valley?

Months with snowfall in Grass Valley, California, are January through April, November and December.

How many days does it snow in Grass Valley?

Throughout the year, in Grass Valley, California, there are 3.4 snowfall days, and 10.1" (256.6mm) of snow is accumulated.

When does it snow the most in Grass Valley?

The month with the most snowfall is February when snow falls for 1 days and typically aggregates up to 2.5" (63.5mm) of snow.

What is the warmest month in Grass Valley?

July is the warmest month in Grass Valley, with an average high-temperature of 87.4°F (30.8°C) and an average low-temperature of 56.1°F (13.4°C).

What is the driest month in Grass Valley?

July is the month with the least rainfall. Rain falls for 0.2 days and accumulates 0.1" (3mm) of precipitation.

What is the coldest month in Grass Valley?

December is the coldest month in Grass Valley, California, with an average high-temperature of 53.1°F (11.7°C) and an average low-temperature of 31.6°F (-0.2°C).
Average temperature - Grass Valley, CA
Average rainfall - Grass Valley, CA
Average rainfall days - Grass Valley, CA

The month with the highest number of rainy days is January (13.1 days).
The month with the lowest number of rainy days is July (0.2 days).

Average snowfall - Grass Valley, CA
Average snowfall days - Grass Valley, CA

The month with the highest number of snowfall days is March (1.1 days).
Months with the lowest number of snowfall days are May, June, July, August, September and October (0 days).

Average daylight - Grass Valley, CA

The month with the longest days is June (Average daylight: 14.9h).
The month with shortest days is December (Average daylight: 9.5h).

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