Foresthill, CA climate
Foresthill has mild winters and warm summers, with plenty of rain. A typical July afternoon reaches 90°, a January night drops to 37°, and about 3 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Foresthill feels like
Winter
Spring
Summer
Fall
Foresthill 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 | 53° | 37° | 9.7" | 0.1" | 9 | 0 | 40° – 53° |
| February | 55° | 37° | 9.1" | 0.5" | 8 | 0 | 36° – 53° |
| March | 58° | 38° | 8.7" | 1.8" | 10 | 0 | 39° – 56° |
| April | 63° | 41° | 4.7" | 0 | 7 | 0 | 45° – 57° |
| May | 72° | 48° | 2.9" | 0 | 5 | 0 | 50° – 69° |
| June | 81° | 55° | 0.8" | 0 | 2 | 0 | 62° – 73° |
| July | 90° | 62° | 0.0" | 0 | 0 | 0 | 71° – 80° |
| August | 89° | 61° | 0.1" | 0 | 1 | 0 | 71° – 79° |
| September | 84° | 57° | 0.5" | 0 | 1 | 0 | 66° – 76° |
| October | 73° | 49° | 2.8" | 0 | 4 | 0 | 56° – 68° |
| November | 59° | 41° | 5.6" | 0.1" | 7 | 0 | 41° – 57° |
| December | 51° | 36° | 9.9" | 0.1" | 9 | 0 | 40° – 48° |
| Year | 69° | 47° | 54.8" | 2.6" | 62 | 1 |
“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 Foresthill
Foresthill gets 55 inches of rain and melted snow a year. December is the wettest month and July the driest. Rain or snow falls on about 62 days a year.
About 221 frost-free days a year
In half of years the last 32° night comes by April 12 and the first one by November 21. That leaves about 221 frost-free days for gardens, longer than 82% of U.S. towns.
Heating and cooling a home in Foresthill
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Foresthill, 75% of that work is heating and 25% 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 Foresthill 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 Foresthill averaged 0.9° warmer than the 1900s. The biggest change is in September (+2.0°). The shift is smaller than in 74% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Foresthill’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 50° to 69°. August is the most reliable, staying within 8°.
Common questions about Foresthill’s climate
What is the coldest month in Foresthill?
December, with a typical high of 51° and a low of 36°.
What is the hottest month in Foresthill?
July, with a typical high of 90° and a low of 62°. About 58 days a year reach 90°.
How much snow does Foresthill get?
About 3 inches in a normal winter, most of it in March.
When is the first frost in Foresthill?
In half of years the first 32° night comes by November 21, and the last spring frost by April 12.
What is the rainiest month in Foresthill?
December, with 9.9 inches of rain and melted snow. The year totals 55 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Foresthill itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Foresthill Rs, CA (1 mi, snow) and Georgetown Rs, CA (5 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.