Grass Valley
California, USA
Long-term weather forecast
Long-term weather forecast

February weather forecast and climate
Grass Valley, CA

The last month of the winter, February, is another cool month in Grass Valley, California, with average temperature fluctuating between 54.5°F (12.5°C) and 37.8°F (3.2°C).

Temperature

In February, the average high-temperature is almost the same as in January - a still fresh 54.5°F (12.5°C). The average low-temperature, in Grass Valley, is 37.8°F (3.2°C).

Humidity

In February, the average relative humidity is 70%.

Rainfall

In Grass Valley, it is raining for 9.8 days, with typically 6.1" (155mm) of accumulated precipitation. Throughout the year, there are 82 rainfall days, and 33.11" (841mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Grass Valley are January through May, November and December. The month with the most snowfall is February when snow falls for 2.2 days and typically aggregates up to 6.42" (163mm) of snow.

Daylight

The average length of the day in February is 10.8h.

Sunshine

In February, the average sunshine in Grass Valley, California, is 5.9h.

UV index

The average daily maximum UV index in February is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from the exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 3 interpret into the following advice:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in February in Grass Valley?

In Grass Valley, California, in February, the average high-temperature is 54.5°F (12.5°C), and the average low-temperature is 37.8°F (3.2°C).

What is the average humidity in February in Grass Valley?

The average relative humidity in February in Grass Valley is 70%.

How much does it rain in Grass Valley in February?

In February, in Grass Valley, the rain falls for 9.8 days. Throughout February, 6.1" (155mm) of precipitation is accumulated.

How many days does it snow in February in Grass Valley?

In Grass Valley, in February, during 2.2 snowfall days, 6.42" (163mm) of snow is typically accumulated.

What is the snowiest month in Grass Valley?

February is the month with the most snowfall in Grass Valley, California. Snow falls for 2.2 days and accumulates 6.42" (163mm) of snow.

How many hours of daylight does Grass Valley have in February?

The average length of the day in February in Grass Valley, California, is 10.8h.

How many hours of sunshine does Grass Valley have in February?

In February, the average sunshine in Grass Valley, California, is 5.9h.

What is the UV index reading in February in Grass Valley?

In Grass Valley, California, the average daily maximum UV index in February is 3. A UV Index estimate of 3 to 5 represents a moderate vulnerability from the exposure to the Sun's UV radiation.
Average temperature in February - Grass Valley, CA
  • Average high temperature in February: 12.5°C

The warmest month (with the highest average high temperature) is July (32.3°C).
The month with the lowest average high temperature is December (10.7°C).

  • Average low temperature in February: 3.2°C

The month with the highest average low temperature is July (15.6°C).
The coldest month (with the lowest average low temperature) is December (2.9°C).

Average humidity in February - Grass Valley, CA
  • Average humidity in February: 70%

The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is July (37%).

Average rainfall in February - Grass Valley, CA
  • Average rainfall in February: 155mm

The wettest month (with the highest rainfall) is March (167mm).
Driest months (with the lowest rainfall) are July and August (1mm).

Average rainfall days in February - Grass Valley, CA
  • Average rainfall days in February: 9.8 days

The month with the highest number of rainy days is March (15.1 days).
The month with the lowest number of rainy days is July (1.1 days).

Average snowfall in February - Grass Valley, CA
  • Average snowfall in February: 163mm

The month with the highest snowfall is February (163mm).
Months with the lowest snowfall are June, July, August, September and October (0mm).

Average snowfall days in February - Grass Valley, CA
  • Average snowfall days in February: 2.2 days

The month with the highest number of snowfall days is March (2.4 days).
Months with the lowest number of snowfall days are June, July, August, September and October (0 days).

Average daylight in February / Average sunshine in February - Grass Valley, CA
  • Average daylight in February: 10.8h

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

  • Average sunshine in February: 5.9h

The month with most sunshine is July (Average sunshine: 12.2h).
The month with least sunshine is January (Average sunshine: 5.7h).

Average UV index in February - Grass Valley, CA
  • Average UV index in February: 3

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is November (UV index 2).