Flagstaff 7-day weather forecast

Written by:
September 8, 2025
ESOlex // Shutterstock

Flagstaff 7-day weather forecast

Stacker created the forecast for Flagstaff, Arizona using data from OpenWeather. This week's high is 78 °F on Monday, while the low is 51 °F on Monday. There are expected to be 4 sunny days and rain on 2 days this week.

There are currently no weather alerts.

Monday, September 15

- High of 78 °F, low of 51 °F (24% humidity)
- Sunny with a 0% chance of rain
- Very high risk of harm from sun exposure (9 UV index)
- Moderate breeze (14 mph wind)
- Sunrise at 6:09 AM, sunset at 6:33 PM
1 / 6
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Tuesday, September 16

- High of 76 °F, low of 53 °F (26% humidity)
- Sunny with a 0% chance of rain
- Very high risk of harm from sun exposure (9 UV index)
- Moderate breeze (16 mph wind)
- Sunrise at 6:10 AM, sunset at 6:32 PM
2 / 6
Andrew Lever // Shutterstock

Wednesday, September 17

- High of 77 °F, low of 56 °F (15% humidity)
- Overcast with a 0% chance of rain
- Very high risk of harm from sun exposure (8 UV index)
- Light breeze (7 mph wind)
- Sunrise at 6:11 AM, sunset at 6:30 PM
3 / 6
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Thursday, September 18

- High of 74 °F, low of 55 °F (23% humidity)
- Overcast with a 0% chance of rain
- Very high risk of harm from sun exposure (9 UV index)
- Moderate breeze (14 mph wind)
- Sunrise at 6:11 AM, sunset at 6:29 PM
4 / 6
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Friday, September 19

- High of 69 °F, low of 55 °F (60% humidity)
- Overcast with a 98% chance of rain (3 mm of rain)
- Very high risk of harm from sun exposure (9 UV index)
- Gentle breeze (8 mph wind)
- Sunrise at 6:12 AM, sunset at 6:28 PM
5 / 6
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Saturday, September 20

- High of 71 °F, low of 54 °F (45% humidity)
- Sunny with a 100% chance of rain (3 mm of rain)
- Very high risk of harm from sun exposure (9 UV index)
- Gentle breeze (11 mph wind)
- Sunrise at 6:13 AM, sunset at 6:26 PM
6 / 6
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Sunday, September 21

- High of 78 °F, low of 55 °F (37% humidity)
- Sunny with a 0% chance of rain
- Very high risk of harm from sun exposure (9 UV index)
- Gentle breeze (12 mph wind)
- Sunrise at 6:14 AM, sunset at 6:25 PM
- New moon

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