Climate averages 1991–2020
Flagstaff weather
in June.
A warm, very dry month: the 2nd warmest and the driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
June is a warm month in Flagstaff: daytime highs average 26.8°C and nights cool to about 13.2°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 11 mm of rain on roughly 3 days, which makes June a very dry month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 14 h 29 min on an average June day.
The nearest other city in this atlas is Surprise (185 km away). In June its highs average 39.2°C, 12.4°C warmer than Flagstaff, with 1.7 mm of rain.
Among the 498 cities listed in the United States, Flagstaff ranks joint 284th of 498 for the warmest June highs and joint 124th of 498 for the driest June (rainfall, lowest first). The mean June high of those 498 cities is 27.9°C; Flagstaff is 1.1°C cooler than that mean.
From June to July, average highs rise by 1.1°C to 27.9°C, and monthly rainfall rises from 11 mm to 115 mm.
The annual picture
June in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Flagstaff climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 5.7°C-3.8°C | -3.8°C | 47 | 6.3 | 10.110 h |
| February | 7.0°C-3.0°C | -3.0°C | 50 | 6.9 | 10.911 h |
| March | 10.7°C-0.3°C | -0.3°C | 49 | 7.3 | 11.912 h |
| April | 15.0°C2.8°C | 2.8°C | 31 | 5.6 | 13.113 h |
| May | 20.5°C7.7°C | 7.7°C | 32 | 5.7 | 14.014 h |
| June, selected | 26.8°C13.2°C | 13.2°C | 11 | 3.0 | 14.514 h |
| July | 27.9°C15.9°C | 15.9°C | 115 | 14.7 | 14.314 h |
| August | 26.2°C15.2°C | 15.2°C | 126 | 16.3 | 13.513 h |
| September | 23.3°C12.4°C | 12.4°C | 57 | 8.8 | 12.412 h |
| October | 17.7°C6.9°C | 6.9°C | 33 | 5.2 | 11.311 h |
| November | 11.2°C1.0°C | 1.0°C | 32 | 4.1 | 10.410 h |
| December | 5.7°C-3.6°C | -3.6°C | 41 | 5.8 | 9.810 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
June in nearby cities
- Surprise in JuneUnited States · 185 kmHigh 39.2°C · Low 24.4°C · 1.7 mm rain
- Peoria (Arizona), United States in JuneUnited States · 188 kmHigh 39.2°C · Low 24.2°C · 1.8 mm rain
- Scottsdale in JuneUnited States · 189 kmHigh 39.3°C · Low 23.6°C · 1.8 mm rain
- Glendale (Arizona), United States in JuneUnited States · 191 kmHigh 39.5°C · Low 24.3°C · 1.8 mm rain
- Mesa in JuneUnited States · 198 kmHigh 39.4°C · Low 23.1°C · 1.6 mm rain
- Phoenix in JuneUnited States · 198 kmHigh 39.7°C · Low 24.1°C · 1.8 mm rain
- Tempe in JuneUnited States · 200 kmHigh 39.6°C · Low 23.7°C · 1.8 mm rain
- Avondale in JuneUnited States · 206 kmHigh 40.0°C · Low 24.8°C · 1.8 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Flagstaff) is explained once on the Flagstaff year overview and on the Sources, method and limits page.