NOAA NCEI Climate Normals 1991–2020
Arizona Weather by Month
Temperature, rain and the hurricane season at 75 Arizona stations, month by month.
Data: NOAA NHC HURDAT2 and NOAA SPC tornado and hail reports, through 2025 · Updated
The median station records 11.2 inches of precipitation a year; Pinetop 2E, AZ records the most, 24.1 inches, and Yuma Mcas, AZ the least, 3.2 (7.5 times as much). July is the hottest month at the median station (average high 99°F); the hottest July is at Bullhead City, AZ, 111°F. December is the coldest (average low 33°F); the coldest December nights are at Sunset Crater Nm, AZ, 12°F. Highs reach 90°F on 129 days a year at the median station and on 195 at Yuma Quartermaster Depot, AZ, the most. Snowfall is heaviest at Pinetop 2E, AZ, 70.3 inches a year; 34 of the 56 stations that measure snow average less than half an inch.
This page compares the 1991–2020 NOAA climate normals of 75 Arizona weather stations, each the nearest station with full normals to at least one of the 129 Arizona cities on this site that have one within 25 miles.
At the median station, August is the wettest month (1.9 inches) and June the driest (0.2). Station by station, the wettest month is August at 37, July at 13 and February at 12 of the 75, and the driest June at 48, May at 15 and April at 12. The gap between the wettest and driest station is widest in August: 4.6 inches.
Month by month across Arizona
High, low and precipitation are the median of the 75 stations; the station columns name the station with the highest average high, the lowest average low, and the most and least precipitation that month, each linked to the city page it serves. Source: NOAA NCEI U.S. Climate Normals 1991–2020.
Arizona cities and their stations
| City | Station | Miles | Hottest month high °F | Coldest month low °F | Year precip. in |
|---|---|---|---|---|---|
| Tucson | Tucson WFO, AZ | <1 | 101 | 42 | 11.6 |
| Yuma | Yuma Quartermaster Depot, AZ | 4 | 109 | 44 | 3.3 |
| Goodyear | Litchfield Park, AZ | 2 | 107 | 42 | 8.4 |
| Casa Grande | Casa Grande, AZ | 2 | 107 | 38 | 7.9 |
| Lake Havasu City | Lake Havasu City, AZ | 3 | 109 | 42 | 4.3 |
| Bullhead City | Bullhead City, AZ | 2 | 111 | 44 | 5.5 |
| Bagdad | Bagdad, AZ | 5 | 95 | 30 | 15.8 |
How stations are matched to cities and what normals are: methodology · other states by month