San Miguel, AZ climate
San Miguel has mild winters and scorching summers, with very little rain. A typical July afternoon reaches 101°, a January night drops to 35°, and about 2 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in San Miguel feels like
Winter
Spring
Summer
Fall
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 | 69° | 35° | 0.9" | 0.5" | 3 | 0 | 46° – 57° |
| February | 71° | 37° | 0.9" | 0.4" | 4 | 0 | 49° – 60° |
| March | 77° | 41° | 0.7" | 0.7" | 3 | 0 | 53° – 65° |
| April | 84° | 46° | 0.3" | 0.1" | 1 | 0 | 59° – 70° |
| May | 92° | 53° | 0.1" | 0 | 1 | 0 | 66° – 77° |
| June | 102° | 62° | 0.2" | 0 | 1 | 0 | 76° – 85° |
| July | 101° | 70° | 2.4" | 0 | 7 | 0 | 83° – 88° |
| August | 100° | 68° | 3.1" | 0 | 9 | 0 | 81° – 89° |
| September | 96° | 63° | 1.4" | 0 | 4 | 0 | 75° – 82° |
| October | 88° | 51° | 0.6" | 0 | 2 | 0 | 66° – 74° |
| November | 77° | 41° | 0.8" | 0.1" | 2 | 0 | 51° – 66° |
| December | 68° | 34° | 1.3" | 0.1" | 3 | 0 | 46° – 56° |
| Year | 85° | 50° | 12.7" | 1.9" | 39 | 0 |
“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 San Miguel
San Miguel gets 13 inches of rain and melted snow a year. August is the wettest month and May the driest. Rain or snow falls on about 39 days a year.
About 246 frost-free days a year
In half of years the last 32° night comes by March 21 and the first one by November 20. That leaves about 246 frost-free days for gardens, longer than 89% of U.S. towns.
Heating and cooling a home in San Miguel
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In San Miguel, 49% of that work is heating and 51% is cooling.
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 San Miguel 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 San Miguel averaged 1.4° warmer than the 1900s. The biggest change is in March (+2.4°). The shift is larger than in 67% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at San Miguel’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 51° to 66°. July is the most reliable, staying within 5°.
Common questions about San Miguel’s climate
What is the coldest month in San Miguel?
December, with a typical high of 68° and a low of 34°.
What is the hottest month in San Miguel?
June, with a typical high of 102° and a low of 62°. About 118 days a year reach 90°.
How much snow does San Miguel get?
About 2 inches in a normal winter, most of it in March.
When is the first frost in San Miguel?
In half of years the first 32° night comes by November 20, and the last spring frost by March 21.
What is the rainiest month in San Miguel?
August, with 3.1 inches of rain and melted snow. The year totals 13 inches.
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 Sasabe 7 Nw, AZ (11 mi, snow) and Sasabe, AZ (17 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.