Somis, CA climate
Somis has warm winters and pleasant summers, with very little rain. A typical July afternoon reaches 84°, a January night drops to 44°.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Somis feels like
Winter
Spring
Summer
Fall
Somis 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 | 68° | 44° | 4.0" | 52° – 61° |
| February | 68° | 44° | 4.4" | 52° – 62° |
| March | 70° | 46° | 2.7" | 52° – 64° |
| April | 73° | 48° | 0.8" | 56° – 64° |
| May | 75° | 52° | 0.3" | 60° – 68° |
| June | 79° | 56° | 0.0" | 64° – 70° |
| July | 84° | 60° | 0.0" | 68° – 77° |
| August | 85° | 59° | 0.0" | 68° – 76° |
| September | 84° | 58° | 0.1" | 68° – 76° |
| October | 79° | 53° | 0.7" | 63° – 73° |
| November | 73° | 47° | 1.0" | 54° – 64° |
| December | 67° | 43° | 3.0" | 52° – 60° |
| Year | 75° | 51° | 16.9" |
“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 Somis
Somis gets 17 inches of rain and melted snow a year. February is the wettest month and August the driest.
A year-round growing season
Heating and cooling a home in Somis
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Somis, 71% of that work is heating and 29% 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 Somis 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 Somis averaged 2.5° warmer than the 1900s. The biggest change is in January (+3.4°). The shift is larger than in 100% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Somis’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 52° to 64°. June is the most reliable, staying within 6°.
Common questions about Somis’s climate
What is the coldest month in Somis?
December, with a typical high of 67° and a low of 43°.
What is the hottest month in Somis?
August, with a typical high of 85° and a low of 59°. About 9 days a year reach 90°.
When is the first frost in Somis?
Frost is uncommon. Only 29% of years see a night at 32° or below.
What is the rainiest month in Somis?
February, with 4.4 inches of rain and melted snow. The year totals 17 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Somis itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Camarillo Airport, CA (6 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.