San Miguel has mild winters and hot summers, with very little rain
A typical July afternoon reaches 93°, a January night drops to 36°, and snow is almost unheard of.
A year in San Miguel at a glance
Each month’s typical high and low, and what it brings.
What stands out about San Miguel’s climate
Read from where San Miguel sits among California’s towns. The page puts what stands out first.
Living with San Miguel’s climate
What the numbers mean for a garden, a driveway, a furnace and a free afternoon.
213 frost-free days. The last frost comes by Apr 4 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 5.
About 0.0" in a normal winter.
Months averaging under 55° run from November through March. Heating is 74% of the year’s heating-and-cooling load.
About 92 days a year reach 90°, and July afternoons average 93°.
The nicest months are March, April, May and October. 0.4 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 →Rain and snow in San Miguel
January is the wettest month and August the driest. Rain or snow falls on about 43 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
No measurable snow in a normal year.
What a year in San Miguel feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 213 frost-free days a year
In half of years the last 32° night comes by April 4 and the first by November 5.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
Warmer than it used to be
The last 30 years in San Miguel averaged 1.7° warmer than the 1900s. The biggest change is in January (+2.6°).
A bigger shift than in 79% of U.S. towns.
Change by month
How San Miguel compares
Against every U.S. town on TownTapestry, each counted once, with its place in California.
San Miguel 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 | 62° | 36° | 3.3" | 0 | 7 | 0 | 44° – 53° |
| February | 64° | 38° | 3.0" | 0 | 8 | 0 | 46° – 56° |
| March | 69° | 40° | 2.7" | 0 | 7 | 0 | 48° – 60° |
| April | 74° | 42° | 0.9" | 0 | 4 | 0 | 53° – 62° |
| May | 81° | 47° | 0.4" | 0 | 2 | 0 | 58° – 70° |
| June | 89° | 51° | 0.0" | 0 | 1 | 0 | 65° – 74° |
| July | 93° | 55° | 0.0" | 0 | 0 | 0 | 69° – 79° |
| August | 94° | 54° | 0.0" | 0 | 0 | 0 | 70° – 77° |
| September | 90° | 51° | 0.1" | 0 | 1 | 0 | 67° – 74° |
| October | 81° | 45° | 0.7" | 0 | 2 | 0 | 59° – 69° |
| November | 70° | 38° | 1.1" | 0 | 4 | 0 | 47° – 58° |
| December | 62° | 35° | 2.3" | 0 | 7 | 0 | 44° – 52° |
| Year | 77° | 44° | 14.4" | 0.0" | 43 | 0 |
Heating and cooling a home in San Miguel
74% 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 58° to 70°. August is the most reliable, staying within 7°.
Common questions about San Miguel’s climate
What is the coldest month in San Miguel?
December, with a typical high of 62° and a low of 35°.
What is the hottest month in San Miguel?
August, with a typical high of 94° and a low of 54°. About 92 days a year reach 90°.
How much snow does San Miguel get?
Almost none. A normal year brings 0.0 inches.
When is the first frost in San Miguel?
In half of years the first 32° night comes by November 5, and the last spring frost by April 4.
What is the rainiest month in San Miguel?
January, with 3.3 inches of rain and melted snow. The year totals 14 inches.
Neighbors talk weather
Gardens, snow, and the best days of the year in San Miguel.
Your answer becomes a post in Town Square.
Temperatures and rainfall come from NOAA’s gridded climate normals for San Miguel itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Paso Robles Municipal Airport, CA (7 mi) away. 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.