Ruth, CA climate
Ruth has mild winters and warm summers, with plenty of rain. A typical July afternoon reaches 90°, a January night drops to 32°.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Ruth feels like
Winter
Spring
Summer
Fall
Ruth 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 | 48° | 32° | 10.9" | 36° – 45° |
| February | 52° | 33° | 9.9" | 36° – 48° |
| March | 57° | 35° | 8.4" | 38° – 52° |
| April | 62° | 36° | 4.8" | 44° – 54° |
| May | 71° | 41° | 2.3" | 50° – 62° |
| June | 81° | 47° | 0.7" | 60° – 71° |
| July | 90° | 54° | 0.1" | 68° – 76° |
| August | 89° | 53° | 0.2" | 69° – 76° |
| September | 84° | 48° | 0.5" | 63° – 70° |
| October | 70° | 41° | 3.3" | 52° – 61° |
| November | 54° | 36° | 6.7" | 38° – 50° |
| December | 47° | 32° | 12.5" | 36° – 43° |
| Year | 67° | 41° | 60.1" |
“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 Ruth
Ruth gets 60 inches of rain and melted snow a year. December is the wettest month and July the driest.
How Ruth 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 Ruth averaged 1.3° warmer than the 1900s. The biggest change is in January (+2.2°). The shift is larger than in 57% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Ruth’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 38° to 52°. December is the most reliable, staying within 7°.
Common questions about Ruth’s climate
What is the coldest month in Ruth?
January, with a typical high of 48° and a low of 32°.
What is the hottest month in Ruth?
July, with a typical high of 90° and a low of 54°.
What is the rainiest month in Ruth?
December, with 12.5 inches of rain and melted snow. The year totals 60 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Ruth 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.