Coulterville has mild winters and hot summers
A typical July afternoon reaches 93°, a January night drops to 35°, and snow is almost unheard of.
A year in Coulterville at a glance
Each month’s typical high and low, and what it brings.
What stands out about Coulterville’s climate
Read from where Coulterville sits among California’s towns. The page puts what stands out first.
Living with Coulterville’s climate
What the numbers mean for a garden, a driveway, a furnace and a free afternoon.
192 frost-free days. The last frost comes by Apr 22 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Nov 2.
About 0.0" in a normal winter.
Months averaging under 55° run from November through April. Heating is 84% of the year’s heating-and-cooling load.
About 59 days a year reach 90°, and July afternoons average 93°.
The nicest months are April, May and October.
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 Coulterville averaged 1.1° warmer than the 1900s. The biggest change is in January (+2.2°).
A smaller shift than in 60% of U.S. towns.
Change by month
About 192 frost-free days a year
In half of years the last 32° night comes by April 22 and the first by November 2.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
What a year in Coulterville feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
Rain and snow in Coulterville
January is the wettest month and July the driest. Rain or snow falls on about 58 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
No measurable snow in a normal year.
How Coulterville compares
Against every U.S. town on TownTapestry, each counted once, with its place in California.
Coulterville 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 | 55° | 35° | 5.7" | 0 | 10 | 0 | 42° – 51° |
| February | 57° | 37° | 5.0" | 0 | 9 | 0 | 40° – 53° |
| March | 61° | 39° | 5.0" | 0 | 9 | 0 | 42° – 57° |
| April | 66° | 41° | 2.6" | 0 | 6 | 0 | 48° – 58° |
| May | 75° | 47° | 1.3" | 0 | 4 | 0 | 53° – 69° |
| June | 86° | 54° | 0.3" | 0 | 1 | 0 | 63° – 75° |
| July | 93° | 60° | 0.0" | 0 | 0 | 0 | 72° – 80° |
| August | 92° | 59° | 0.0" | 0 | 0 | 0 | 72° – 79° |
| September | 87° | 55° | 0.2" | 0 | 1 | 0 | 67° – 75° |
| October | 75° | 47° | 1.5" | 0 | 3 | 0 | 57° – 68° |
| November | 63° | 39° | 2.9" | 0 | 6 | 0 | 42° – 57° |
| December | 54° | 34° | 5.4" | 0 | 9 | 0 | 40° – 50° |
| Year | 72° | 45° | 29.9" | 0.0" | 58 | 0 |
Heating and cooling a home in Coulterville
84% of the work is heating, so the furnace matters far more than the air conditioner.
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 53° to 69°. August is the most reliable, staying within 8°.
Common questions about Coulterville’s climate
What is the coldest month in Coulterville?
December, with a typical high of 54° and a low of 34°.
What is the hottest month in Coulterville?
July, with a typical high of 93° and a low of 60°. About 59 days a year reach 90°.
How much snow does Coulterville get?
Almost none. A normal year brings 0.0 inches.
When is the first frost in Coulterville?
In half of years the first 32° night comes by November 2, and the last spring frost by April 22.
What is the rainiest month in Coulterville?
January, with 5.7 inches of rain and melted snow. The year totals 30 inches.
Neighbors talk weather
Gardens, snow, and the best days of the year in Coulterville.
Your answer becomes a post in Town Square.
Temperatures and rainfall come from NOAA’s gridded climate normals for Coulterville itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Exchequer Dam, CA (10 mi, snow) and Groveland 2, 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. Today’s forecast: National Weather Service.