Oracle, AZ climate
Oracle has mild winters and warm summers, with very little rain. A typical July afternoon reaches 91°, a January night drops to 36°, and about 11 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Oracle feels like
Winter
Spring
Summer
Fall
Oracle 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 | 30-yr range |
|---|---|---|---|---|---|---|
| January | 56° | 36° | 1.8" | 2.9" | 7 | 41° – 51° |
| February | 59° | 37° | 1.9" | 1.9" | 6 | 42° – 53° |
| March | 65° | 41° | 1.3" | 2.5" | 6 | 46° – 58° |
| April | 72° | 46° | 0.6" | 1.2" | 3 | 53° – 64° |
| May | 82° | 55° | 0.3" | 0 | 2 | 62° – 73° |
| June | 92° | 64° | 0.3" | 0 | 2 | 73° – 81° |
| July | 91° | 68° | 3.0" | 0 | 10 | 75° – 82° |
| August | 90° | 66° | 3.0" | 0 | 12 | 75° – 83° |
| September | 85° | 62° | 1.9" | 0 | 6 | 69° – 77° |
| October | 77° | 53° | 1.0" | 0 | 4 | 61° – 69° |
| November | 65° | 43° | 1.2" | 0.5" | 4 | 46° – 62° |
| December | 56° | 36° | 2.0" | 1.8" | 5 | 42° – 51° |
| Year | 74° | 51° | 18.3" | 10.8" | 67 |
“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 Oracle
Oracle gets 18 inches of rain and melted snow a year. August is the wettest month and June the driest. Rain or snow falls on about 67 days a year.
About 242 frost-free days a year
In half of years the last 32° night comes by March 23 and the first one by November 22. That leaves about 242 frost-free days for gardens, longer than 89% of U.S. towns.
Heating and cooling a home in Oracle
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Oracle, 60% of that work is heating and 40% 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 Oracle 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 Oracle averaged 1.3° warmer than the 1900s. The biggest change is in March (+2.2°). The shift is larger than in 60% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Oracle’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 46° to 62°. July is the most reliable, staying within 6°.
Common questions about Oracle’s climate
What is the coldest month in Oracle?
January, with a typical high of 56° and a low of 36°.
What is the hottest month in Oracle?
June, with a typical high of 92° and a low of 64°. About 68 days a year reach 90°.
How much snow does Oracle get?
About 11 inches in a normal winter, most of it in January.
When is the first frost in Oracle?
In half of years the first 32° night comes by November 22, and the last spring frost by March 23.
What is the rainiest month in Oracle?
August, with 3.0 inches of rain and melted snow. The year totals 18 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Oracle itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Oracle 2 Se, AZ (3 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.