Lewiston 7-day weather forecast

Written by:
June 8, 2026
ESOlex // Shutterstock

Lewiston 7-day weather forecast

created the forecast for Lewiston, Idaho using data from . This week's high is 105 掳F on Thursday, while the low is 58 掳F on Monday. There are expected to be 7 sunny days and precipitation on 0 days this week.

NWS Spokane WA has issued an air quality alert until Monday at 12:00 PM.

Monday, August 3

- High of 85 掳F, low of 58 掳F (20% humidity)
- Sunny with a 0% chance of rain
- Moderate risk of harm from sun exposure (4 UV index)
- Light breeze (7 mph wind)
- Sunrise at 5:31 AM, sunset at 8:16 PM
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1 / 6
GP PIXSTOCK // Shutterstock

Tuesday, August 4

- High of 94 掳F, low of 59 掳F (14% humidity)
- Sunny with a 0% chance of rain
- High risk of harm from sun exposure (6 UV index)
- Light breeze (7 mph wind)
- Sunrise at 5:32 AM, sunset at 8:15 PM
2 / 6
supergenijalac // Shutterstock

Wednesday, August 5

- High of 100 掳F, low of 61 掳F (10% 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 5:34 AM, sunset at 8:13 PM
- Last quarter moon
3 / 6
Leena Robinson // Shutterstock

Thursday, August 6

- High of 105 掳F, low of 67 掳F (10% humidity)
- Sunny with a 0% chance of rain
- Moderate risk of harm from sun exposure (2 UV index)
- Moderate breeze (13 mph wind)
- Sunrise at 5:35 AM, sunset at 8:12 PM
4 / 6
New Africa // Shutterstock

Friday, August 7

- High of 103 掳F, low of 69 掳F (10% humidity)
- Sunny with a 0% chance of rain
- Moderate risk of harm from sun exposure (3 UV index)
- Fresh breeze (20 mph wind)
- Sunrise at 5:36 AM, sunset at 8:10 PM
5 / 6
Piyawat Nandeenopparit // Shutterstock

Saturday, August 8

- High of 95 掳F, low of 68 掳F (18% humidity)
- Fair with a 0% chance of rain
- Moderate risk of harm from sun exposure (3 UV index)
- Moderate breeze (15 mph wind)
- Sunrise at 5:37 AM, sunset at 8:09 PM
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6 / 6
AnnaElizabeth photography // Shutterstock

Sunday, August 9

- High of 90 掳F, low of 65 掳F (17% humidity)
- Sunny with a 0% chance of rain
- Moderate risk of harm from sun exposure (3 UV index)
- Moderate breeze (17 mph wind)
- Sunrise at 5:39 AM, sunset at 8:07 PM

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