Average temperature in Lewistown (MT)
The mean minimum and maximum temperatures over the year in Lewistown (Montana), the United States of America.
- The months of June, July, August and September have nice average temperatures.
- On average, the warmest month is July with 28°C.
- On average, the coolest month is December with 1°C.
- The average annual maximum temperature is 13°C.
- The average annual minimum temperature is -0°C.
Forecast for Lewistown (MT)
partly cloudy and chance of rain
overcast and rain
overcast and heavy rain