Rainy days · Arizona
How often does it rain in Flagstaff?
Flagstaff’s summer rain shows up most afternoons in July and August like it has a standing reservation.
Flagstaff gets measurable rain or snow on about 82 days a year, adding up to about 20 inches.
November usually brings Flagstaff about 4 wet days and 1.5 inches. The wettest month is usually August, with about 13 wet days, and the driest is June, with about 2 wet days. That makes Flagstaff number 110 of the 129 US cities we track, rainiest first.
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Rainy days, month by month
| Month | Wet days | Inches |
|---|---|---|
| January | 7 | 2.0 |
| February | 8 | 2.2 |
| March | 7 | 1.9 |
| April | 5 | 0.9 |
| May | 5 | 0.8 |
| June | 2 | 0.3 |
| July | 12 | 2.6 |
| August | 13 | 3.0 |
| September | 8 | 1.8 |
| October | 5 | 1.5 |
| November | 4 | 1.5 |
| December | 7 | 1.9 |
Cities with about as many rainy days
- Denver, Colorado: about 82 wet days a year
- San Antonio, Texas: about 81 wet days a year
- Oklahoma City, Oklahoma: about 83 wet days a year
Source: NOAA daily precipitation records for the Flagstaff area, 1991 to 2020 (at least 29 complete years behind every month), via the Applied Climate Information System. A wet day here means at least a hundredth of an inch of rain or melted snow.