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Flagstaff

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Flagstaff Weather, Climate and Best Time to Visit

Data source:Meteostat
Update date:2025-09

Flagstaff year round climate

  • Spring (March–May): Average 2–12°C, dry and cool climate. March has more rainfall, but overall spring is drier. Common activities: Hiking, exploring desert landscapes. Suggested clothing: Jacket, long-sleeved shirt, thermal underwear.
  • Summer (June–August): Average 18–21°C, warm and dry climate with a large diurnal temperature range. Occasional afternoon thunderstorms. Common activities: Camping, stargazing, exploring national parks. Suggested clothing: Light long-sleeved shirt, shorts, light jacket.
  • Autumn (September–November): Average 10–16°C, dry and comfortable climate, warm days and cool nights. Common activities: Hiking, viewing fall foliage (though less pronounced than in eastern areas), enjoying local cuisine. Suggested clothing: Long-sleeved shirt, light jacket, comfortable shoes.
  • Winter (December–February): Average -1.5–2°C, cold and dry climate with infrequent snowfall. Common activities: Skiing (requires travel to nearby resorts), enjoying snow scenes. Suggested clothing: Heavy coat, hat, gloves, scarf, warm boots.

Flagstaff climatological average

Annual average temperature: approx. 9°C / Annual rainfall: approx. 657 mm / Summer humidity: 20%–30% / Rainiest month: March

Flagstaff monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
-1.5°C
107.1
February
-1°C
90.5
March
2°C
139.2
April
7.7°C
24.6
May
12.3°C
15.8
June
17.7°C
16.6
July
21.3°C
41.1
August
18.9°C
86
September
15.9°C
32.7
October
9.9°C
32.9
November
2.3°C
24.3
December
0.7°C
46.5

Flagstaff weather for the next seven days

12/14
Sunday
Cloudy
14.1°C/5.2°C
12/15
Monday
Sunny
16.1°C/7.2°C
12/16
Tuesday
Sunny
15.9°C/5.7°C
12/17
Wednesday
Partly Cloudy
13.3°C/4.5°C
12/18
Thursday
Sunny
12.7°C/3.4°C
12/19
Friday
Sunny
10.7°C/3.1°C
12/20
Saturday
Sunny
9.7°C/1.6°C