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Lewiston weather live forecast
Today's maximum temperature in Lewiston is expected to be 21°C. Select a day from the live weather forecast for Lewiston, Idaho, USA for more weather parameters.
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Sunday
14th Sep -
Monday
15th Sep -
Tuesday
16th Sep -
Wednesday
17th Sep -
Thursday
18th Sep
5-day weather forecast updated at 04:01 on Sunday 14th September 2025 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 Sunday 14th September 2025
Expect isolated thunderstorms in Lewiston, Idaho with a maximum temperature of 21°C, maximum UV of 3 (Moderate) and 3 hours of bright sunshine. There are 2-5 mm of rainfall expected with 79% chance of some rain and a light breeze of 11 kph from the north-west.
- °C maximum temperature
- °C minimum temperature
- isolated thunderstorms
- hours of sunshine
- UV index (Moderate)
- % chance of some rain
- mm of rainfall expected
- °C wind chill
- kph wind from NW
Lewiston weather for Monday 15th September 2025
Expect clear skies in Lewiston, Idaho with a maximum temperature of 23°C, maximum UV of 5 (Moderate) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the south-west.
- °C maximum temperature
- °C minimum temperature
- clear skies
- hours of sunshine
- UV index (Moderate)
- mm of rainfall expected
- no heat & humidity
- kph wind from SW
Lewiston weather for Tuesday 16th September 2025
Expect clear skies in Lewiston, Idaho with a maximum temperature of 29°C, low levels of heat & humidity, maximum UV of 6 (High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the east.
- °C maximum temperature
- °C minimum temperature
- clear skies
- hours of sunshine
- UV index (High)
- mm of rainfall expected
- low heat & humidity
- kph wind from E
Lewiston weather for Wednesday 17th September 2025
Expect clear skies in Lewiston, Idaho with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 6 (High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the east.
- °C maximum temperature
- °C minimum temperature
- clear skies
- hours of sunshine
- UV index (High)
- mm of rainfall expected
- moderate heat & humidity
- kph wind from E
Lewiston weather for Thursday 18th September 2025
Expect broken clouds in Lewiston, Idaho with a maximum temperature of 26°C, maximum UV of 5 (Moderate) and no hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the north-west.
- °C maximum temperature
- °C minimum temperature
- broken clouds
- hours of sunshine
- UV index (Moderate)
- mm of rainfall expected
- no heat & humidity
- kph wind from NW
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Metric (°C / mm) | Imperial (°F / inches)
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