Lewiston 7-day weather forecast

Written by:
March 23, 2026
ESOlex // Shutterstock

Lewiston 7-day weather forecast

created the forecast for Lewiston, Idaho using data from . This week's high is 79 掳F on Saturday, while the low is 44 掳F on Tuesday. There are expected to be 4 sunny days and rain on 3 days this week.

There are currently no weather alerts.

Monday, May 18

- High of 70 掳F, low of 47 掳F (50% humidity)
- Sunny with a 90% chance of rain (0 mm of rain)
- Very high risk of harm from sun exposure (7 UV index)
- Gentle breeze (9 mph wind)
- Sunrise at 5:11 AM, sunset at 8:18 PM
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Tuesday, May 19

- High of 68 掳F, low of 44 掳F (45% humidity)
- Mostly sunny with a 0% chance of rain
- High risk of harm from sun exposure (7 UV index)
- Gentle breeze (10 mph wind)
- Sunrise at 5:10 AM, sunset at 8:19 PM
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Wednesday, May 20

- High of 70 掳F, low of 51 掳F (53% humidity)
- Partly cloudy with a 29% chance of rain (1 mm of rain)
- High risk of harm from sun exposure (7 UV index)
- Gentle breeze (11 mph wind)
- Sunrise at 5:09 AM, sunset at 8:20 PM
3 / 6
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Thursday, May 21

- High of 72 掳F, low of 48 掳F (60% humidity)
- Sunny with a 22% chance of rain (0 mm of rain)
- High risk of harm from sun exposure (6 UV index)
- Light breeze (4 mph wind)
- Sunrise at 5:08 AM, sunset at 8:21 PM
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LeManna // Shutterstock

Friday, May 22

- High of 77 掳F, low of 50 掳F (51% humidity)
- Fair with a 0% chance of rain
- High risk of harm from sun exposure (7 UV index)
- Light breeze (5 mph wind)
- Sunrise at 5:07 AM, sunset at 8:22 PM
5 / 6
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Saturday, May 23

- High of 79 掳F, low of 56 掳F (40% humidity)
- Overcast with a 0% chance of rain
- High risk of harm from sun exposure (7 UV index)
- Moderate breeze (13 mph wind)
- Sunrise at 5:06 AM, sunset at 8:23 PM
- First quarter moon
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Sunday, May 24

- High of 78 掳F, low of 52 掳F (33% humidity)
- Mostly cloudy with a 0% chance of rain
- High risk of harm from sun exposure (7 UV index)
- Moderate breeze (14 mph wind)
- Sunrise at 5:05 AM, sunset at 8:24 PM

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