Robinson Mill, CA climate
Robinson Mill has mild winters and warm summers, with plenty of rain. A typical July afternoon reaches 90°, a January night drops to 37°, and about 15 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Robinson Mill feels like
Winter
Spring
Summer
Fall
Robinson Mill 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 | 54° | 37° | 10.8" | 2.3" | 14 | 2 | 41° – 53° |
| February | 55° | 38° | 10.3" | 4.6" | 12 | 4 | 40° – 53° |
| March | 59° | 40° | 9.0" | 3.2" | 12 | 3 | 42° – 56° |
| April | 64° | 42° | 4.7" | 0.9" | 9 | 1 | 47° – 58° |
| May | 73° | 49° | 2.8" | 0 | 6 | 0 | 51° – 69° |
| June | 82° | 56° | 0.9" | 0 | 3 | 0 | 63° – 74° |
| July | 90° | 62° | 0.0" | 0 | 0 | 0 | 72° – 80° |
| August | 89° | 61° | 0.1" | 0 | 1 | 0 | 72° – 79° |
| September | 84° | 58° | 0.4" | 0 | 2 | 0 | 67° – 75° |
| October | 73° | 50° | 3.2" | 0 | 4 | 0 | 57° – 68° |
| November | 60° | 42° | 6.1" | 0.8" | 9 | 1 | 42° – 57° |
| December | 53° | 37° | 11.9" | 2.7" | 12 | 2 | 41° – 49° |
| Year | 70° | 48° | 60.2" | 14.5" | 85 | 13 |
“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 Robinson Mill
Robinson Mill 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 13 days of the year.
About 229 frost-free days a year
In half of years the last 32° night comes by April 1 and the first one by November 17. That leaves about 229 frost-free days for gardens, longer than 86% of U.S. towns.
Heating and cooling a home in Robinson Mill
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Robinson Mill, 76% of that work is heating and 24% is cooling.
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 Robinson Mill 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 Robinson Mill averaged 1.2° warmer than the 1900s. The biggest change is in January (+2.3°). The shift is smaller than in 54% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Robinson Mill’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 51° to 69°. August is the most reliable, staying within 7°.
Common questions about Robinson Mill’s climate
What is the coldest month in Robinson Mill?
December, with a typical high of 53° and a low of 37°.
What is the hottest month in Robinson Mill?
July, with a typical high of 90° and a low of 62°. About 79 days a year reach 90°.
How much snow does Robinson Mill get?
About 15 inches in a normal winter, most of it in February.
When is the first frost in Robinson Mill?
In half of years the first 32° night comes by November 17, and the last spring frost by April 1.
What is the rainiest month in Robinson Mill?
December, with 11.9 inches of rain and melted snow. The year totals 60 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Robinson Mill itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Nevada City, CA (24 mi, snow) and Dobbins 1 S, CA (11 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.