Boise 7-day weather forecast

Written by:
September 8, 2025
ESOlex // Shutterstock

Boise 7-day weather forecast

Stacker created the forecast for Boise, Idaho using data from OpenWeather. This week's high is 89 °F on Friday, while the low is 48 °F on Monday. There are expected to be 5 sunny days and rain on 1 day this week.

There are currently no weather alerts.

Monday, September 15

- High of 74 °F, low of 48 °F (34% humidity)
- Partly cloudy with a 0% chance of rain
- High risk of harm from sun exposure (6 UV index)
- Moderate breeze (13 mph wind)
- Sunrise at 7:24 AM, sunset at 7:55 PM
1 / 6
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Tuesday, September 16

- High of 81 °F, low of 55 °F (27% humidity)
- Sunny with a 0% chance of rain
- High risk of harm from sun exposure (6 UV index)
- Gentle breeze (8 mph wind)
- Sunrise at 7:25 AM, sunset at 7:53 PM
2 / 6
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Wednesday, September 17

- High of 85 °F, low of 62 °F (20% humidity)
- Sunny with a 0% chance of rain
- High risk of harm from sun exposure (6 UV index)
- Light breeze (6 mph wind)
- Sunrise at 7:26 AM, sunset at 7:51 PM
3 / 6
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Thursday, September 18

- High of 88 °F, low of 65 °F (20% humidity)
- Mostly sunny with a 0% chance of rain
- High risk of harm from sun exposure (7 UV index)
- Light breeze (5 mph wind)
- Sunrise at 7:27 AM, sunset at 7:49 PM
4 / 6
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Friday, September 19

- High of 89 °F, low of 70 °F (13% humidity)
- Overcast with a 0% chance of rain
- High risk of harm from sun exposure (7 UV index)
- Gentle breeze (8 mph wind)
- Sunrise at 7:29 AM, sunset at 7:48 PM
5 / 6
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Saturday, September 20

- High of 88 °F, low of 71 °F (30% humidity)
- Mostly sunny with a 0% chance of rain
- High risk of harm from sun exposure (7 UV index)
- Fresh breeze (21 mph wind)
- Sunrise at 7:30 AM, sunset at 7:46 PM
6 / 6
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Sunday, September 21

- High of 82 °F, low of 64 °F (31% humidity)
- Fair with a 67% chance of rain (0 mm of rain)
- High risk of harm from sun exposure (7 UV index)
- Moderate breeze (13 mph wind)
- Sunrise at 7:31 AM, sunset at 7:44 PM
- New moon

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