Dewey-Humboldt, AZ climate
Dewey-Humboldt has mild winters and hot summers, with very little rain. A typical July afternoon reaches 93°, a January night drops to 28°.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Dewey-Humboldt feels like
Winter
Spring
Summer
Fall
Dewey-Humboldt 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 | 55° | 28° | 1.5" | 37° – 48° |
| February | 58° | 31° | 1.6" | 38° – 51° |
| March | 64° | 35° | 1.3" | 43° – 56° |
| April | 71° | 40° | 0.5" | 49° – 61° |
| May | 80° | 47° | 0.4" | 57° – 68° |
| June | 91° | 55° | 0.2" | 67° – 78° |
| July | 93° | 63° | 1.9" | 75° – 81° |
| August | 91° | 62° | 2.5" | 73° – 80° |
| September | 86° | 55° | 1.4" | 67° – 73° |
| October | 76° | 44° | 0.9" | 56° – 66° |
| November | 64° | 34° | 0.9" | 42° – 55° |
| December | 55° | 27° | 1.4" | 37° – 46° |
| Year | 74° | 43° | 14.5" |
“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 Dewey-Humboldt
Dewey-Humboldt gets 14 inches of rain and melted snow a year. August is the wettest month and June the driest.
About 188 frost-free days a year
In half of years the last 32° night comes by April 20 and the first one by October 27. That leaves about 188 frost-free days for gardens, longer than 62% of U.S. towns.
Heating and cooling a home in Dewey-Humboldt
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Dewey-Humboldt, 79% of that work is heating and 21% 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 Dewey-Humboldt 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 Dewey-Humboldt averaged 2.0° warmer than the 1900s. The biggest change is in March (+3.1°). The shift is larger than in 94% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Dewey-Humboldt’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 43° to 56°. September is the most reliable, staying within 6°.
Common questions about Dewey-Humboldt’s climate
What is the coldest month in Dewey-Humboldt?
December, with a typical high of 55° and a low of 27°.
What is the hottest month in Dewey-Humboldt?
July, with a typical high of 93° and a low of 63°. About 50 days a year reach 90°.
When is the first frost in Dewey-Humboldt?
In half of years the first 32° night comes by October 27, and the last spring frost by April 20.
What is the rainiest month in Dewey-Humboldt?
August, with 2.5 inches of rain and melted snow. The year totals 14 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Dewey-Humboldt itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Prescott Love Fld, AZ (13 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.