Twentynine Palms, CA climate
Twentynine Palms has mild winters and scorching summers, with very little rain. A typical July afternoon reaches 103°, a January night drops to 39°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Twentynine Palms feels like
Winter
Spring
Summer
Fall
Twentynine Palms 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 | 63° | 39° | 0.6" | 0 | 3 | 0 | 47° – 57° |
| February | 67° | 41° | 0.7" | 0.2" | 3 | 0 | 48° – 61° |
| March | 74° | 46° | 0.4" | 0 | 2 | 0 | 53° – 66° |
| April | 80° | 51° | 0.1" | 0 | 2 | 0 | 60° – 71° |
| May | 89° | 59° | 0.0" | 0 | 1 | 0 | 67° – 81° |
| June | 99° | 67° | 0.0" | 0 | 0 | 0 | 77° – 88° |
| July | 103° | 75° | 0.4" | 0 | 2 | 0 | 85° – 92° |
| August | 102° | 73° | 0.5" | 0 | 2 | 0 | 85° – 92° |
| September | 96° | 66° | 0.3" | 0 | 2 | 0 | 77° – 84° |
| October | 84° | 54° | 0.1" | 0 | 1 | 0 | 65° – 75° |
| November | 72° | 44° | 0.2" | 0 | 2 | 0 | 49° – 63° |
| December | 61° | 37° | 0.6" | 0.6" | 4 | 1 | 45° – 54° |
| Year | 83° | 54° | 3.8" | 0.8" | 22 | 1 |
“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 Twentynine Palms
Twentynine Palms gets 4 inches of rain and melted snow a year. February is the wettest month and June the driest. Rain or snow falls on about 22 days a year.
About 321 frost-free days a year
In half of years the last 32° night comes by January 24 and the first one by December 10. That leaves about 321 frost-free days for gardens, longer than 96% of U.S. towns.
Heating and cooling a home in Twentynine Palms
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Twentynine Palms, 30% of that work is heating and 70% is cooling, so air conditioning is the bigger bill.
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.
How Twentynine Palms 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 Twentynine Palms averaged 1.9° warmer than the 1900s. The biggest change is in January (+2.9°). The shift is larger than in 90% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Twentynine Palms’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. November swings the most: between 1991 and 2020 its average temperature ranged from 49° to 63°. September is the most reliable, staying within 7°.
Common questions about Twentynine Palms’s climate
What is the coldest month in Twentynine Palms?
December, with a typical high of 61° and a low of 37°.
What is the hottest month in Twentynine Palms?
July, with a typical high of 103° and a low of 75°. About 154 days a year reach 90°.
How much snow does Twentynine Palms get?
Almost none. A normal year brings 0.8 inches.
When is the first frost in Twentynine Palms?
In half of years the first 32° night comes by December 10, and the last spring frost by January 24.
What is the rainiest month in Twentynine Palms?
February, with 0.7 inches of rain and melted snow. The year totals 4 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Twentynine Palms itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Joshua Tree, CA (12 mi, snow) and Twentynine Palms, CA (2 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.