Lake Isabella has mild winters and hot summers, with very little rain
A typical July afternoon reaches 98°, a January night drops to 31°.
A year in Lake Isabella at a glance
Each month’s typical high and low, and what it brings.
What stands out about Lake Isabella’s climate
Read from where Lake Isabella sits among California’s towns. The page puts what stands out first.
About 212 frost-free days a year
In half of years the last 32° night comes by April 5 and the first by November 3.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
Living with Lake Isabella’s climate
What the numbers mean for a garden, a driveway, a furnace and a free afternoon.
212 frost-free days. The last frost comes by Apr 5 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 3.
Months averaging under 55° run from November through March. Heating is 64% of the year’s heating-and-cooling load.
About 114 days a year reach 90°, and July afternoons average 98°.
The nicest months are April, May and October. 46 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 Lake Isabella
January is the wettest month and July the driest.
Rain + melted snow by month
Inches of water
Snowfall by month
No snow records from a nearby station.
What a year in Lake Isabella feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
Warmer than it used to be
The last 30 years in Lake Isabella averaged 1.9° warmer than the 1900s. The biggest change is in June (+2.6°).
A bigger shift than in 89% of U.S. towns.
Change by month
How Lake Isabella compares
Against every U.S. town on TownTapestry, each counted once, with its place in California.
Lake Isabella 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 | 60° | 31° | 2.4" | 41° – 51° |
| February | 62° | 34° | 2.2" | 41° – 56° |
| March | 67° | 38° | 1.8" | 45° – 59° |
| April | 73° | 41° | 0.8" | 52° – 61° |
| May | 82° | 49° | 0.4" | 57° – 73° |
| June | 92° | 57° | 0.1" | 67° – 79° |
| July | 98° | 62° | 0.1" | 76° – 84° |
| August | 97° | 61° | 0.1" | 75° – 83° |
| September | 92° | 54° | 0.1" | 68° – 77° |
| October | 80° | 44° | 0.4" | 58° – 68° |
| November | 67° | 36° | 0.9" | 43° – 57° |
| December | 59° | 30° | 2.0" | 41° – 49° |
| Year | 77° | 45° | 11.2" |
Heating and cooling a home in Lake Isabella
64% 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 57° to 73°. August is the most reliable, staying within 7°.
Common questions about Lake Isabella’s climate
What is the coldest month in Lake Isabella?
December, with a typical high of 59° and a low of 30°.
What is the hottest month in Lake Isabella?
July, with a typical high of 98° and a low of 62°. About 114 days a year reach 90°.
When is the first frost in Lake Isabella?
In half of years the first 32° night comes by November 3, and the last spring frost by April 5.
What is the rainiest month in Lake Isabella?
January, with 2.4 inches of rain and melted snow. The year totals 11 inches.
Neighbors talk weather
Gardens, snow, and the best days of the year in Lake Isabella.
Your answer becomes a post in Town Square.
Temperatures and rainfall come from NOAA’s gridded climate normals for Lake Isabella itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at South Lake Fs, 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.