Mesa, CA climate
Mesa has chilly winters and hot summers, with very little rain. A typical July afternoon reaches 95°, a January night drops to 27°.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Mesa feels like
Winter
Spring
Summer
Fall
Mesa 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 | 53° | 27° | 0.8" | 32° – 47° |
| February | 55° | 29° | 0.8" | 35° – 51° |
| March | 62° | 34° | 0.4" | 40° – 55° |
| April | 69° | 38° | 0.2" | 48° – 58° |
| May | 77° | 46° | 0.2" | 53° – 68° |
| June | 88° | 54° | 0.2" | 64° – 76° |
| July | 95° | 61° | 0.2" | 74° – 81° |
| August | 93° | 59° | 0.1" | 72° – 80° |
| September | 86° | 52° | 0.2" | 64° – 72° |
| October | 74° | 41° | 0.3" | 53° – 62° |
| November | 61° | 32° | 0.4" | 37° – 53° |
| December | 51° | 26° | 0.5" | 35° – 44° |
| Year | 72° | 42° | 4.2" |
“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 Mesa
Mesa gets 4 inches of rain and melted snow a year. January is the wettest month and August the driest.
How Mesa 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 Mesa averaged 1.5° warmer than the 1900s. The biggest change is in January (+2.6°). The shift is larger than in 67% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Mesa’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 37° to 53°. July is the most reliable, staying within 7°.
Common questions about Mesa’s climate
What is the coldest month in Mesa?
December, with a typical high of 51° and a low of 26°.
What is the hottest month in Mesa?
July, with a typical high of 95° and a low of 61°.
What is the rainiest month in Mesa?
January, with 0.8 inches of rain and melted snow. The year totals 4 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Mesa itself (about a 3-mile square). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.