Clarksburg has mild winters and hot summers, with very little rain
A typical July afternoon reaches 93°, a January night drops to 39°, and snow is almost unheard of.
A year in Clarksburg at a glance
Each month’s typical high and low, and what it brings.
What a year in Clarksburg feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
Rain and snow in Clarksburg
January is the wettest month and July the driest. Rain or snow falls on about 63 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
No measurable snow in a normal year.
About 301 frost-free days a year
In half of years the last 32° night comes by February 2 and the first by December 2.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
Living with Clarksburg’s climate
What the numbers mean for a garden, a driveway, a furnace and a free afternoon.
301 frost-free days. The last frost comes by Feb 2 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Dec 2.
About 0.0" in a normal winter.
Months averaging under 55° run from November through February. Heating is 65% of the year’s heating-and-cooling load.
About 76 days a year reach 90°, and July afternoons average 93°.
The nicest months are March, April, May, October and November. 1.4 miles of trails are waiting.
Parks & trails →Normals are averages. Ice storms, nor’easters, floods and heat waves are on the natural hazards page.
Natural hazards →Warmer than it used to be
The last 30 years in Clarksburg averaged 1.3° warmer than the 1900s. The biggest change is in January (+1.8°).
A bigger shift than in 54% of U.S. towns.
Change by month
How Clarksburg compares
Against every U.S. town on TownTapestry, each counted once, with its place in California.
Clarksburg 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 | 56° | 39° | 3.7" | 0 | 12 | 0 | 43° – 51° |
| February | 62° | 41° | 3.6" | 0 | 10 | 0 | 48° – 56° |
| March | 67° | 44° | 2.7" | 0 | 9 | 0 | 50° – 62° |
| April | 73° | 48° | 1.4" | 0 | 5 | 0 | 55° – 65° |
| May | 81° | 53° | 0.8" | 0 | 3 | 0 | 60° – 73° |
| June | 88° | 57° | 0.2" | 0 | 1 | 0 | 68° – 76° |
| July | 93° | 59° | 0.0" | 0 | 0 | 0 | 73° – 80° |
| August | 92° | 59° | 0.0" | 0 | 0 | 0 | 72° – 80° |
| September | 89° | 57° | 0.1" | 0 | 1 | 0 | 69° – 76° |
| October | 79° | 50° | 0.9" | 0 | 3 | 0 | 62° – 70° |
| November | 66° | 43° | 1.8" | 0 | 7 | 0 | 48° – 59° |
| December | 56° | 38° | 3.4" | 0 | 11 | 0 | 43° – 53° |
| Year | 75° | 49° | 18.4" | 0.0" | 63 | 0 |
Heating and cooling a home in Clarksburg
65% of the work is heating.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. Source: NOAA station normals.
How much a month can swing
A normal is an average. May swings the most: from 1991 to 2020 its average ranged from 60° to 73°. September is the most reliable, staying within 7°.
Common questions about Clarksburg’s climate
What is the coldest month in Clarksburg?
December, with a typical high of 56° and a low of 38°.
What is the hottest month in Clarksburg?
July, with a typical high of 93° and a low of 59°. About 76 days a year reach 90°.
How much snow does Clarksburg get?
Almost none. A normal year brings 0.0 inches.
When is the first frost in Clarksburg?
In half of years the first 32° night comes by December 2, and the last spring frost by February 2.
What is the rainiest month in Clarksburg?
January, with 3.7 inches of rain and melted snow. The year totals 18 inches.
Neighbors talk weather
Gardens, snow, and the best days of the year in Clarksburg.
Your answer becomes a post in Town Square.
Temperatures and rainfall come from NOAA’s gridded climate normals for Clarksburg itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Davis 2 Wsw Exp Farm, CA (15 mi, snow) and Sacramento Executive Airport, CA (7 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. Today’s forecast: National Weather Service.