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

March weather forecast and climate
Grass Valley, CA

The first month of the spring, March, is a moderate month in Grass Valley, California, with average temperature fluctuating between 39.9°F (4.4°C) and 56.5°F (13.6°C).

Temperature

In Grass Valley, the average high-temperature is almost the same as in February - a mild 56.5°F (13.6°C). In March, in Grass Valley, California, the average low-temperature is 39.9°F (4.4°C).

Humidity

With an average relative humidity of 75%, March is the most humid month in Grass Valley, California.

Rainfall

The month with the most rainfall in Grass Valley is March when the rain falls for 15.1 days and typically aggregates up to 6.57" (167mm) of precipitation.

Snowfall

January through May, November and December are months with snowfall. In March, it is snowing for 2.4 days. Throughout March, 4.13" (105mm) of snow is accumulated. In Grass Valley, during the entire year, snow falls for 6.8 days, and aggregates up to 14.41" (366mm) of snow.

Daylight

In Grass Valley, the average length of the day is 12h.

Sunshine

In March, the average sunshine is 7.2h.

UV index

In March, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 3 in March interpret into the following advice:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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 March in Grass Valley?

The average high-temperature, in March, is 56.5°F (13.6°C), while the average low-temperature is 39.9°F (4.4°C).

What is the most humid month in Grass Valley?

With an average relative humidity of 75%, March is the most humid month.

What is the average humidity in March in Grass Valley?

In Grass Valley, the average relative humidity in March is 75%.

How much does it rain in Grass Valley in March?

In Grass Valley, during March, the rain falls for 15.1 days and regularly aggregates up to 6.57" (167mm) of precipitation.

What is the rainiest month in Grass Valley?

The month with the most rainfall in Grass Valley, California, is March when the rain falls for 15.1 days and typically aggregates up to 6.57" (167mm) of precipitation.

How much does it snow in Grass Valley in March?

In Grass Valley, California, in March, snow falls for 2.4 days, with typically accumulated 4.13" (105mm) of snow.

What is the average length of the day in March in Grass Valley?

In Grass Valley, California, the average length of the day in March is 12h.

How long on average sun shines in March in Grass Valley?

The average sunshine in March is 7.2h.

How high is the UV index in March in Grass Valley?

The average daily maximum UV index in March in Grass Valley is 3. A UV Index reading of 3 to 5 represents a moderate vulnerability from unsafe exposure to the Sun's UV rays.
Average temperature in March - Grass Valley, CA
  • Average high temperature in March: 13.6°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 March: 4.4°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 March - Grass Valley, CA
  • Average humidity in March: 75%

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

Average rainfall in March - Grass Valley, CA
  • Average rainfall in March: 167mm

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 March - Grass Valley, CA
  • Average rainfall days in March: 15.1 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 March - Grass Valley, CA
  • Average snowfall in March: 105mm

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 March - Grass Valley, CA
  • Average snowfall days in March: 2.4 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 March / Average sunshine in March - Grass Valley, CA
  • Average daylight in March: 12h

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 March: 7.2h

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 March - Grass Valley, CA
  • Average UV index in March: 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).