Surprise, AZ Weather & Climate Normals
Surprise's real weather, in one number
Surprise, AZ scores 45/100 on this site's reading of NOAA's own 30-year normals: strongly seasonal. Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. 4 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
Surprise's hottest and coldest months
Surprise's hottest month is Jul, averaging 91°F; its coldest is Dec, averaging 52°F, a 39.1°F swing across the year, a middling gap by national standards.
Surprise's weather across the year
| Month | Avg high | Avg low | Precip | Snow |
|---|---|---|---|---|
| Jan | 65°F | 39°F | 1.38in | 0in |
| Feb | 68°F | 41°F | 1.45in | 0in |
| Mar | 75°F | 46°F | 1in | 0in |
| Apr | 82°F | 51°F | 0.25in | 0in |
| May | 92°F | 60°F | 0.09in | 0in |
| Jun | 102°F | 69°F | 0.07in | 0in |
| Jul | 105°F | 77°F | 0.89in | 0in |
| Aug | 103°F | 77°F | 1.13in | 0in |
| Sep | 98°F | 70°F | 1.06in | 0in |
| Oct | 87°F | 57°F | 0.66in | 0in |
| Nov | 74°F | 46°F | 0.67in | 0in |
| Dec | 64°F | 39°F | 0.95in | 0in |
Mar, Apr, Oct, and Nov are the best time to see Surprise at its mildest; the rest of the year, plan around Jul's heat and Dec's cold.
Rain and snow in Surprise
Surprise averages 9.6in of precipitation a year across roughly 36 days with measurable rain or snow, and 0in of snow a year.
Where Surprise ranks
Surprise ranks 3211 of 4876 US cities in this dataset for comfort score, and 42 of 57 within AZ. About 167,564 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from Wittmann 1se, AZ US, 8.4 miles from Surprise, not a prediction for any specific day.
More on how this is worked out
How the comfort score is calculated · Why some cities show no snow or rain figure