Little Grass Valley, CA climate
Little Grass Valley has mild, snowy winters and pleasant summers, with plenty of rain. A typical July afternoon reaches 81°, a January night drops to 28°, and about 82 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Little Grass Valley feels like
Winter
Spring
Summer
Fall
Little Grass Valley weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 44° | 28° | 10.7" | 17.7" | 13 | 14 | 31° – 41° |
| February | 46° | 27° | 10.1" | 19.4" | 12 | 12 | 29° – 43° |
| March | 50° | 30° | 9.1" | 17.1" | 12 | 10 | 32° – 46° |
| April | 55° | 32° | 4.7" | 8.1" | 9 | 5 | 38° – 48° |
| May | 64° | 39° | 3.0" | 0.6" | 7 | 0 | 43° – 59° |
| June | 73° | 46° | 1.0" | 0 | 3 | 0 | 55° – 65° |
| July | 81° | 52° | 0.1" | 0 | 1 | 0 | 63° – 70° |
| August | 81° | 51° | 0.2" | 0 | 1 | 0 | 63° – 70° |
| September | 76° | 47° | 0.6" | 0 | 2 | 0 | 58° – 65° |
| October | 65° | 39° | 3.2" | 0.5" | 5 | 0 | 48° – 56° |
| November | 51° | 32° | 6.2" | 3.5" | 9 | 2 | 33° – 47° |
| December | 43° | 28° | 11.1" | 15.1" | 12 | 10 | 32° – 39° |
| Year | 61° | 38° | 59.9" | 82.0" | 85 | 54 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in Little Grass Valley
Little Grass Valley gets 60 inches of rain and melted snow a year. December is the wettest month and July the driest. Rain or snow falls on about 85 days a year. Snow covers the ground about 54 days of the year.
About 174 frost-free days a year
In half of years the last 32° night comes by May 4 and the first one by October 30. That leaves about 174 frost-free days for gardens, shorter than 56% of U.S. towns.
Heating and cooling a home in Little Grass Valley
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Little Grass Valley, 93% of that work is heating and 7% is cooling, so the furnace matters far more than the air conditioner.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
How Little Grass Valley compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in Little Grass Valley averaged 1.1° warmer than the 1900s. The biggest change is in September (+2.1°). The shift is smaller than in 64% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Little Grass Valley’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. May swings the most: between 1991 and 2020 its average temperature ranged from 43° to 59°. December is the most reliable, staying within 6°.
Common questions about Little Grass Valley’s climate
What is the coldest month in Little Grass Valley?
February, with a typical high of 46° and a low of 27°.
What is the hottest month in Little Grass Valley?
July, with a typical high of 81° and a low of 52°. About 15 days a year reach 90°.
How much snow does Little Grass Valley get?
About 82 inches in a normal winter, most of it in February.
When is the first frost in Little Grass Valley?
In half of years the first 32° night comes by October 30, and the last spring frost by May 4.
What is the rainiest month in Little Grass Valley?
December, with 11.1 inches of rain and melted snow. The year totals 60 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Little Grass Valley itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Strawberry Valley, CA (14 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.