Mad River, CA climate
Mad River has mild winters and warm summers, with plenty of rain. A typical July afternoon reaches 89°, a January night drops to 33°.
NOAA 1991-2020 climate normals Updated once a decade8° warmer than normal today. The forecast high is 84°, and a typical Sep 30 in Mad River peaks around 76°.Live forecast: National Weather Service · Normal: NOAA 1991–2020
What a year in Mad River feels like
Winter
Spring
Summer
Fall
Mad River weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | 30-yr range |
|---|---|---|---|---|
| January | 47° | 33° | 10.8" | 36° – 45° |
| February | 51° | 33° | 10.1" | 36° – 48° |
| March | 56° | 34° | 8.4" | 39° – 51° |
| April | 62° | 36° | 4.9" | 44° – 54° |
| May | 71° | 41° | 2.4" | 50° – 61° |
| June | 80° | 46° | 0.8" | 59° – 70° |
| July | 89° | 53° | 0.1" | 67° – 74° |
| August | 89° | 52° | 0.2" | 68° – 75° |
| September | 83° | 50° | 0.5" | 63° – 70° |
| October | 69° | 42° | 3.4" | 52° – 61° |
| November | 54° | 36° | 6.9" | 38° – 49° |
| December | 46° | 33° | 12.7" | 36° – 44° |
| Year | 66° | 41° | 61.2" |
“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 Mad River
Mad River gets 61 inches of rain and melted snow a year. December is the wettest month and July the driest.
How Mad River 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 Mad River averaged 1.4° warmer than the 1900s. The biggest change is in January (+2.3°). The shift is larger than in 64% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Mad River’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. March swings the most: between 1991 and 2020 its average temperature ranged from 39° to 51°. September is the most reliable, staying within 6°.
Common questions about Mad River’s climate
What is the coldest month in Mad River?
February, with a typical high of 51° and a low of 33°.
What is the hottest month in Mad River?
July, with a typical high of 89° and a low of 53°.
What is the rainiest month in Mad River?
December, with 12.7 inches of rain and melted snow. The year totals 61 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Mad River itself (about a 3-mile square). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.