Larkfield-Wikiup, CA climate
Larkfield-Wikiup has mild winters and warm summers. A typical July afternoon reaches 84°, a January night drops to 38°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Larkfield-Wikiup feels like
Winter
Spring
Summer
Fall
Larkfield-Wikiup 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 | 58° | 38° | 6.5" | 0 | 13 | 0 | 45° – 52° |
| February | 62° | 40° | 6.3" | 0 | 12 | 0 | 47° – 56° |
| March | 66° | 41° | 4.7" | 0 | 11 | 0 | 48° – 59° |
| April | 70° | 43° | 2.1" | 0 | 7 | 0 | 51° – 60° |
| May | 75° | 47° | 1.2" | 0 | 4 | 0 | 56° – 66° |
| June | 82° | 50° | 0.3" | 0 | 2 | 0 | 63° – 69° |
| July | 84° | 52° | 0.0" | 0 | 0 | 0 | 65° – 71° |
| August | 85° | 52° | 0.0" | 0 | 1 | 0 | 65° – 72° |
| September | 84° | 50° | 0.1" | 0 | 2 | 0 | 64° – 71° |
| October | 77° | 47° | 1.6" | 0 | 4 | 0 | 59° – 68° |
| November | 66° | 41° | 3.4" | 0 | 9 | 0 | 47° – 57° |
| December | 58° | 38° | 6.8" | 0 | 13 | 0 | 44° – 52° |
| Year | 72° | 45° | 33.1" | 0.0" | 78 | 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 Larkfield-Wikiup
Larkfield-Wikiup gets 33 inches of rain and melted snow a year. December is the wettest month and July the driest. Rain or snow falls on about 78 days a year.
About 262 frost-free days a year
In half of years the last 32° night comes by March 2 and the first one by November 20. That leaves about 262 frost-free days for gardens, longer than 92% of U.S. towns.
Heating and cooling a home in Larkfield-Wikiup
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Larkfield-Wikiup, 88% of that work is heating and 12% 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.
Larkfield-Wikiup and its neighbors
Larkfield-Wikiup borders 2 towns with climate data. January nights across them vary by 0.6°. Santa Rosa has the coldest January nights (38°) and Windsor the hottest July afternoons (85°). Larkfield-Wikiup’s January low is 38° and its July high 84°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Larkfield-Wikiup 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 Larkfield-Wikiup averaged 1.5° warmer than the 1900s. The biggest change is in January (+2.4°). The shift is larger than in 72% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Larkfield-Wikiup’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 48° to 59°. June is the most reliable, staying within 6°.
Common questions about Larkfield-Wikiup’s climate
What is the coldest month in Larkfield-Wikiup?
December, with a typical high of 58° and a low of 38°.
What is the hottest month in Larkfield-Wikiup?
August, with a typical high of 85° and a low of 52°. About 34 days a year reach 90°.
How much snow does Larkfield-Wikiup get?
Almost none. A normal year brings 0.0 inches.
When is the first frost in Larkfield-Wikiup?
In half of years the first 32° night comes by November 20, and the last spring frost by March 2.
What is the rainiest month in Larkfield-Wikiup?
December, with 6.8 inches of rain and melted snow. The year totals 33 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Larkfield-Wikiup itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Graton, CA (8 mi, snow) and Santa Rosa Sonoma Co Airport, CA (3 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.