Average temperature in Lewiston (ID)
The mean minimum and maximum temperatures over the year in Lewiston (Idaho), the United States of America.
- The months of May, June and September have nice average temperatures.
- On average, the warmest month(s) are July and August.
- On average, the warmest month is July with 34°C.
- On average, the coolest month is December with 5°C.
- The average annual maximum temperature is 19°C.
- The average annual minimum temperature is 7°C.
Forecast for Lewiston (ID)
Fri May 17
21°C | 11°C
W 
32 km/h
32 km/h
partly cloudy and no rain
Sat May 18
22°C | 7°C
W 25 km/h
25 km/h
almost clear and no rain
Sun May 19
19°C | 8°C
NW 18 km/h
18 km/h
partly cloudy and no rain
