Spring Valley, AZ climate
Spring Valley has mild winters and hot summers, with very little rain. A typical July afternoon reaches 96°, a January night drops to 33°, and about 1 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Spring Valley feels like
Winter
Spring
Summer
Fall
Spring Valley 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 | 58° | 33° | 1.6" | 0 | 5 | 0 | 42° – 53° |
| February | 61° | 35° | 1.8" | 0.3" | 5 | 0 | 41° – 54° |
| March | 67° | 39° | 1.4" | 0.1" | 5 | 0 | 46° – 60° |
| April | 73° | 44° | 0.4" | 0.2" | 2 | 0 | 53° – 64° |
| May | 83° | 51° | 0.3" | 0 | 2 | 0 | 60° – 72° |
| June | 93° | 60° | 0.2" | 0 | 1 | 0 | 71° – 81° |
| July | 96° | 67° | 1.9" | 0 | 6 | 0 | 78° – 85° |
| August | 94° | 66° | 2.3" | 0 | 7 | 0 | 76° – 84° |
| September | 89° | 60° | 1.4" | 0 | 4 | 0 | 71° – 77° |
| October | 78° | 49° | 1.0" | 0 | 3 | 0 | 59° – 70° |
| November | 67° | 39° | 0.9" | 0.3" | 3 | 0 | 46° – 59° |
| December | 57° | 33° | 1.5" | 0.3" | 4 | 0 | 42° – 50° |
| Year | 76° | 48° | 14.8" | 1.2" | 46 | 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 Spring Valley
Spring Valley gets 15 inches of rain and melted snow a year. August is the wettest month and June the driest. Rain or snow falls on about 46 days a year.
About 221 frost-free days a year
In half of years the last 32° night comes by April 5 and the first one by November 17. That leaves about 221 frost-free days for gardens, longer than 82% of U.S. towns.
Heating and cooling a home in Spring Valley
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Spring Valley, 62% of that work is heating and 38% 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 Spring Valley 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 Spring Valley averaged 1.8° warmer than the 1900s. The biggest change is in March (+2.8°). The shift is larger than in 89% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Spring Valley’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. March swings the most: between 1991 and 2020 its average temperature ranged from 46° to 60°. September is the most reliable, staying within 6°.
Common questions about Spring Valley’s climate
What is the coldest month in Spring Valley?
December, with a typical high of 57° and a low of 33°.
What is the hottest month in Spring Valley?
July, with a typical high of 96° and a low of 67°. About 101 days a year reach 90°.
How much snow does Spring Valley get?
About 1 inches in a normal winter, most of it in February.
When is the first frost in Spring Valley?
In half of years the first 32° night comes by November 17, and the last spring frost by April 5.
What is the rainiest month in Spring Valley?
August, with 2.3 inches of rain and melted snow. The year totals 15 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Spring Valley itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Cordes, AZ (3 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.