Grizzly Flats, CA climate
Grizzly Flats has mild winters and warm summers, with plenty of rain. A typical July afternoon reaches 88°, a January night drops to 36°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Grizzly Flats feels like
Winter
Spring
Summer
Fall
Grizzly Flats 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 | 52° | 36° | 9.5" | 0 | 11 | 0 | 39° – 50° |
| February | 53° | 35° | 8.8" | 0.1" | 11 | 0 | 36° – 52° |
| March | 57° | 36° | 8.5" | 0.1" | 10 | 0 | 38° – 54° |
| April | 62° | 39° | 4.7" | 0 | 7 | 0 | 43° – 55° |
| May | 70° | 46° | 3.1" | 0 | 5 | 0 | 49° – 67° |
| June | 80° | 53° | 0.8" | 0 | 1 | 0 | 61° – 72° |
| July | 88° | 61° | 0.1" | 0 | 0 | 0 | 70° – 78° |
| August | 88° | 60° | 0.1" | 0 | 0 | 0 | 70° – 78° |
| September | 83° | 56° | 0.5" | 0 | 1 | 0 | 65° – 74° |
| October | 71° | 48° | 2.9" | 0 | 3 | 0 | 56° – 67° |
| November | 58° | 40° | 5.2" | 0.1" | 7 | 0 | 39° – 55° |
| December | 50° | 35° | 9.3" | 0 | 11 | 0 | 38° – 48° |
| Year | 68° | 45° | 53.3" | 0.3" | 69 | 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 Grizzly Flats
Grizzly Flats gets 53 inches of rain and melted snow a year. January is the wettest month and July the driest. Rain or snow falls on about 69 days a year.
About 191 frost-free days a year
In half of years the last 32° night comes by April 26 and the first one by November 2. That leaves about 191 frost-free days for gardens, longer than 65% of U.S. towns.
Heating and cooling a home in Grizzly Flats
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Grizzly Flats, 89% of that work is heating and 11% is cooling, so the furnace matters far more than the air conditioner.
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 Grizzly Flats 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 Grizzly Flats averaged 0.7° warmer than the 1900s. The biggest change is in September (+1.6°). The shift is smaller than in 89% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Grizzly Flats’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 49° to 67°. August is the most reliable, staying within 8°.
Common questions about Grizzly Flats’s climate
What is the coldest month in Grizzly Flats?
December, with a typical high of 50° and a low of 35°.
What is the hottest month in Grizzly Flats?
July, with a typical high of 88° and a low of 61°. About 58 days a year reach 90°.
How much snow does Grizzly Flats get?
Almost none. A normal year brings 0.3 inches.
When is the first frost in Grizzly Flats?
In half of years the first 32° night comes by November 2, and the last spring frost by April 26.
What is the rainiest month in Grizzly Flats?
January, with 9.5 inches of rain and melted snow. The year totals 53 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Grizzly Flats itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Fiddletown Dexter Rch, CA (12 mi, snow) and Pacific House, CA (9 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.