Lewiston weather live forecast

Today's maximum temperature in Lewiston is expected to be 31°C. Select a day from the live weather forecast for Lewiston, Idaho, USA for more weather parameters.

Tuesday
4th Aug
31

12

14

6
Wednesday
5th Aug
35

14

15

7
Thursday
6th Aug
37

15

15

7
Friday
7th Aug
37

17

15

7
Saturday
8th Aug
34

15

14

6

5-day weather forecast updated at 04:00 on Tuesday 4th August 2026 GMT

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The 5-day weather forecast for Idaho (Lewiston) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Lewiston weather forecast by day

Below are the detailed weather forecasts for Lewiston for the next 5 days.

Lewiston weather for Tuesday 4th August 2026

Expect clear skies in Lewiston, Idaho with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 6 (High) and 14 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 5 kph from the east.

31
°C maximum temperature
12
°C minimum temperature
clear skies
14
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
M
moderate heat & humidity
5
kph wind from E

Lewiston weather for Wednesday 5th August 2026

Expect clear skies in Lewiston, Idaho with a maximum temperature of 35°C, high levels of heat & humidity, maximum UV of 7 (High) and 15 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 4 kph from the east.

35
°C maximum temperature
14
°C minimum temperature
clear skies
15
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
H
high heat & humidity
4
kph wind from E

Lewiston weather for Thursday 6th August 2026

Expect clear skies in Lewiston, Idaho with a maximum temperature of 37°C, high levels of heat & humidity, maximum UV of 7 (High) and 15 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 5 kph from the east.

37
°C maximum temperature
15
°C minimum temperature
clear skies
15
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
H
high heat & humidity
5
kph wind from E

Lewiston weather for Friday 7th August 2026

37
°C maximum temperature
17
°C minimum temperature
clear skies
15
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
H
high heat & humidity
25
kph wind from NW

Lewiston weather for Saturday 8th August 2026

Expect clear skies in Lewiston, Idaho with a maximum temperature of 34°C, high levels of heat & humidity, maximum UV of 6 (High) and 14 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 20 kph from the north-west.