Redwood Valley, CA climate
Redwood Valley has mild winters and warm summers. A typical July afternoon reaches 92°, a January night drops to 35°, and about 3 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Redwood Valley feels like
Winter
Spring
Summer
Fall
Redwood Valley 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 | 57° | 35° | 7.5" | 0.3" | 17 | 0 | 43° – 51° |
| February | 60° | 37° | 6.7" | 1.2" | 15 | 0 | 43° – 55° |
| March | 64° | 39° | 5.6" | 0.6" | 14 | 0 | 44° – 58° |
| April | 68° | 41° | 2.7" | 0 | 11 | 0 | 49° – 59° |
| May | 76° | 45° | 1.5" | 0 | 7 | 0 | 53° – 67° |
| June | 84° | 50° | 0.4" | 0 | 2 | 0 | 62° – 73° |
| July | 92° | 54° | 0.0" | 0 | 0 | 0 | 69° – 76° |
| August | 91° | 53° | 0.1" | 0 | 0 | 0 | 69° – 76° |
| September | 87° | 49° | 0.2" | 0 | 1 | 0 | 65° – 72° |
| October | 77° | 43° | 1.9" | 0 | 5 | 0 | 56° – 67° |
| November | 63° | 38° | 4.1" | 0.1" | 11 | 0 | 43° – 55° |
| December | 55° | 35° | 7.7" | 0.3" | 16 | 0 | 42° – 49° |
| Year | 73° | 43° | 38.3" | 2.5" | 99 | 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 Redwood Valley
Redwood Valley gets 38 inches of rain and melted snow a year. December is the wettest month and July the driest. Rain or snow falls on about 99 days a year.
About 211 frost-free days a year
In half of years the last 32° night comes by April 8 and the first one by November 6. That leaves about 211 frost-free days for gardens, longer than 79% of U.S. towns.
Heating and cooling a home in Redwood Valley
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Redwood Valley, 77% of that work is heating and 23% 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 Redwood Valley 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 Redwood Valley averaged 0.8° warmer than the 1900s. The biggest change is in January (+1.5°). The shift is smaller than in 87% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Redwood Valley’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 53° to 67°. August is the most reliable, staying within 7°.
Common questions about Redwood Valley’s climate
What is the coldest month in Redwood Valley?
December, with a typical high of 55° and a low of 35°.
What is the hottest month in Redwood Valley?
July, with a typical high of 92° and a low of 54°. About 82 days a year reach 90°.
How much snow does Redwood Valley get?
About 3 inches in a normal winter, most of it in February.
When is the first frost in Redwood Valley?
In half of years the first 32° night comes by November 6, and the last spring frost by April 8.
What is the rainiest month in Redwood Valley?
December, with 7.7 inches of rain and melted snow. The year totals 38 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Redwood Valley itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Ukiah 4 Wsw, CA (10 mi, snow) and Potter Valley Powerhouse, CA (8 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.