San Andreas, CA climate
San Andreas has mild winters and hot summers. A typical July afternoon reaches 95°, a January night drops to 37°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in San Andreas feels like
Winter
Spring
Summer
Fall
San Andreas 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 | 56° | 37° | 5.4" | 0 | 12 | 0 | 42° – 54° |
| February | 60° | 39° | 4.9" | 0 | 10 | 0 | 42° – 57° |
| March | 65° | 41° | 4.5" | 0 | 10 | 0 | 45° – 60° |
| April | 70° | 43° | 2.3" | 0 | 7 | 0 | 51° – 61° |
| May | 79° | 49° | 1.5" | 0 | 4 | 0 | 55° – 73° |
| June | 88° | 55° | 0.3" | 0 | 1 | 0 | 65° – 77° |
| July | 95° | 60° | 0.0" | 0 | 0 | 0 | 73° – 82° |
| August | 94° | 59° | 0.0" | 0 | 0 | 0 | 73° – 80° |
| September | 89° | 55° | 0.1" | 0 | 1 | 0 | 67° – 77° |
| October | 78° | 48° | 1.3" | 0 | 3 | 0 | 59° – 71° |
| November | 65° | 41° | 3.0" | 0 | 7 | 0 | 44° – 59° |
| December | 55° | 36° | 4.9" | 0 | 11 | 0 | 42° – 52° |
| Year | 75° | 47° | 28.3" | 0.0" | 67 | 0 |
“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 San Andreas
San Andreas gets 28 inches of rain and melted snow a year. January is the wettest month and July the driest. Rain or snow falls on about 67 days a year.
A year-round growing season
Heating and cooling a home in San Andreas
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In San Andreas, 61% of that work is heating and 39% 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 San Andreas 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 San Andreas averaged 1.0° warmer than the 1900s. The biggest change is in January (+1.8°). The shift is smaller than in 69% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at San Andreas’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 55° to 73°. August is the most reliable, staying within 8°.
Common questions about San Andreas’s climate
What is the coldest month in San Andreas?
December, with a typical high of 55° and a low of 36°.
What is the hottest month in San Andreas?
July, with a typical high of 95° and a low of 60°. About 87 days a year reach 90°.
How much snow does San Andreas get?
Almost none. A normal year brings 0.0 inches.
When is the first frost in San Andreas?
Frost is uncommon. Only 88% of years see a night at 32° or below.
What is the rainiest month in San Andreas?
January, with 5.4 inches of rain and melted snow. The year totals 28 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for San Andreas itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Camp Pardee, CA (10 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.