Flagstaff 7-day weather forecast

Written by:
August 18, 2025
ESOlex // Shutterstock

Flagstaff 7-day weather forecast

Stacker created the forecast for Flagstaff, Arizona using data from OpenWeather. This week's high is 90 °F on Friday, while the low is 50 °F on Monday. There is expected to be 1 sunny day and rain on 4 days this week.

There are currently no weather alerts.

Monday, August 18

- High of 85 °F, low of 50 °F (17% humidity)
- Sunny with a 0% chance of rain
- Very high risk of harm from sun exposure (11 UV index)
- Gentle breeze (10 mph wind)
- Sunrise at 5:49 AM, sunset at 7:12 PM
1 / 6
1981 Rustic Studio kan // Shutterstock

Tuesday, August 19

- High of 86 °F, low of 61 °F (15% humidity)
- Partly cloudy with a 0% chance of rain
- Very high risk of harm from sun exposure (11 UV index)
- Gentle breeze (10 mph wind)
- Sunrise at 5:49 AM, sunset at 7:10 PM
2 / 6
AnnaElizabeth photography // Shutterstock

Wednesday, August 20

- High of 87 °F, low of 62 °F (20% humidity)
- Partly sunny with a 0% chance of rain
- Very high risk of harm from sun exposure (10 UV index)
- Gentle breeze (12 mph wind)
- Sunrise at 5:50 AM, sunset at 7:09 PM
3 / 6
Saijai Boonmak // Shutterstock

Thursday, August 21

- High of 88 °F, low of 64 °F (20% humidity)
- Partly cloudy with a 20% chance of rain (0 mm of rain)
- Very high risk of harm from sun exposure (11 UV index)
- Gentle breeze (9 mph wind)
- Sunrise at 5:51 AM, sunset at 7:08 PM
4 / 6
loreanto // Shutterstock

Friday, August 22

- High of 90 °F, low of 65 °F (20% humidity)
- Overcast with a 53% chance of rain (1 mm of rain)
- Very high risk of harm from sun exposure (11 UV index)
- Gentle breeze (12 mph wind)
- Sunrise at 5:52 AM, sunset at 7:07 PM
- New moon
5 / 6
Leena Robinson // Shutterstock

Saturday, August 23

- High of 84 °F, low of 60 °F (28% humidity)
- Overcast with a 100% chance of rain (21 mm of rain)
- Very high risk of harm from sun exposure (11 UV index)
- Gentle breeze (11 mph wind)
- Sunrise at 5:52 AM, sunset at 7:05 PM
6 / 6
Jurga Jot // Shutterstock

Sunday, August 24

- High of 82 °F, low of 60 °F (30% humidity)
- Partly cloudy with a 100% chance of rain (11 mm of rain)
- Very high risk of harm from sun exposure (11 UV index)
- Gentle breeze (8 mph wind)
- Sunrise at 5:53 AM, sunset at 7:04 PM

Trending Now