Flagstaff, AZ 14-Day Forecast
Arizona, United States 🇺🇸
69°
Patchy rain nearby right now
Today: high 70°, low 53°
Updated 57 min ago
Flagstaff weather for the next 14 days
Wednesday, September 16
Light rain shower High 63° Low 54°Precipitation
90%
· 0.85 in
Max wind
8 mph
Humidity
87%
UV index
5 - Moderate
Sunrise / sunset
06:10 AM / 06:32 PM
Thursday, September 17
Patchy rain nearby High 70° Low 51°Precipitation
64%
· 0.06 in
Max wind
10 mph
Humidity
80%
UV index
9 - Very High
Sunrise / sunset
06:10 AM / 06:31 PM
Friday, September 18
Sunny High 72° Low 52°Precipitation
4%
· 0.0 in
Max wind
11 mph
Humidity
61%
UV index
9 - Very High
Sunrise / sunset
06:11 AM / 06:29 PM
Saturday, September 19
Sunny High 72° Low 52°Precipitation
1%
· 0.0 in
Max wind
12 mph
Humidity
44%
UV index
9 - Very High
Sunrise / sunset
06:12 AM / 06:28 PM
Sunday, September 20
Sunny High 71° Low 52°Precipitation
3%
· 0.0 in
Max wind
12 mph
Humidity
28%
UV index
5 - Moderate
Sunrise / sunset
06:13 AM / 06:26 PM
Monday, September 21
Sunny High 68° Low 51°Precipitation
1%
· 0.0 in
Max wind
14 mph
Humidity
37%
UV index
5 - Moderate
Sunrise / sunset
06:13 AM / 06:25 PM
Tuesday, September 22
Sunny High 70° Low 51°Precipitation
4%
· 0.0 in
Max wind
8 mph
Humidity
44%
UV index
6 - High
Sunrise / sunset
06:14 AM / 06:23 PM
Wednesday, September 23
Overcast High 72° Low 55°Precipitation
9%
· 0.0 in
Max wind
10 mph
Humidity
35%
UV index
5 - Moderate
Sunrise / sunset
06:15 AM / 06:22 PM
Thursday, September 24
Sunny High 74° Low 54°Precipitation
1%
· 0.0 in
Max wind
10 mph
Humidity
29%
UV index
6 - High
Sunrise / sunset
06:16 AM / 06:21 PM
Friday, September 25
Sunny High 74° Low 56°Precipitation
57%
· 0.05 in
Max wind
7 mph
Humidity
52%
UV index
6 - High
Sunrise / sunset
06:16 AM / 06:19 PM
Saturday, September 26
Overcast High 77° Low 58°Precipitation
8%
· 0.0 in
Max wind
10 mph
Humidity
42%
UV index
6 - High
Sunrise / sunset
06:17 AM / 06:18 PM
Sunday, September 27
Overcast High 76° Low 59°Precipitation
7%
· 0.0 in
Max wind
14 mph
Humidity
33%
UV index
5 - Moderate
Sunrise / sunset
06:18 AM / 06:16 PM
Monday, September 28
Sunny High 73° Low 57°Precipitation
2%
· 0.0 in
Max wind
12 mph
Humidity
39%
UV index
6 - High
Sunrise / sunset
06:19 AM / 06:15 PM
Flagstaff 14-day outlook: the story
The warmest day of Flagstaff's 14-day outlook is Saturday, September 26 with a high near 77°F (25°C); the coolest night comes Thursday, September 17, dipping to 51°F (11°C). The trend points warmer: week two runs about 4°F above week one. Highs over the next two weeks average 69°F (21°C), about 6°F (3°C) below the typical September high of 75°F (24°C).
Precipitation is most likely on Tuesday 15, Wednesday 16, Thursday 17, Friday 25; the wettest day looks like Wednesday, September 16 with about 0.85 in (21.5 mm) expected. For the weekend, expect Saturday 72°F (22°C) and sunny / Sunday 71°F (22°C) and sunny.
For typical conditions month by month, see the Flagstaff climate & average temperatures guide.
Flagstaff forecast questions
Will it rain in Flagstaff this week?
The forecast currently shows meaningful precipitation chances on 4 of the next 14 days, peaking around Wednesday, September 16.
What will be the warmest day in Flagstaff over the next 14 days?
Saturday, September 26, with a forecast high near 77°F (25°C).
How accurate is a 14-day forecast for Flagstaff?
Days 1-3 are highly reliable, days 4-7 capture the overall pattern well, and days 8-14 indicate trends rather than exact figures - check back as the date approaches; this page refreshes throughout the day.
Average temperatures in Flagstaff by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 40° | 23° | 8 | 2.0 in | 8.4 h/day | 66% |
| February | 44° | 25° | 6 | 1.9 in | 9.7 h/day | 58% |
| March | 49° | 29° | 8 | 2.1 in | 10.5 h/day | 57% |
| April | 61° | 36° | 4 | 0.6 in | 12.4 h/day | 39% |
| May | 68° | 43° | 6 | 1.2 in | 12.9 h/day | 36% |
| June | 81° | 56° | 3 | 0.6 in | 13.7 h/day | 27% |
| July | 83° | 60° | 12 | 2.6 in | 12.5 h/day | 43% |
| August | 80° | 58° | 11 | 2.4 in | 12.2 h/day | 50% |
| September | 75° | 53° | 6 | 1.3 in | 11.6 h/day | 45% |
| October | 64° | 43° | 6 | 1.2 in | 10.5 h/day | 47% |
| November | 52° | 33° | 3 | 1.1 in | 9.4 h/day | 49% |
| December | 43° | 26° | 5 | 1.4 in | 8.3 h/day | 56% |
14-day forecasts nearby