ClimateForecastNovemberDecember >>

Lewistown (MT) Climate by Month

The climate in Lewistown is marked by big temperature swings throughout the year. Temperatures range from warm during the warmest months to very cold in the cooler months. Lewistown has a dry climate with relatively low precipitation levels. Let’s explore the climate details in depth to provide you with a complete overview.

Average day and night temperature

In Lewistown, temperatures differ significantly between summer and winter months. On average, daytime temperatures range from a comfortable 28°C in July to a very cold 1°C in December. Nighttime temperatures can drop, with averages reaching -11°C in December.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Lewistown's climate is marked by below-average rain/snowfall, accumulating 498 mm of precipitation yearly. The seasons in Lewistown, bring significant changes in precipitation. The wettest month, May, receives moderate rainfall, with an average of 100 mm of precipitation. This rainfall is distributed across 18 rainy days. In contrast, the driest month, February, experiences much less snowfall, totaling 16 mm over 10 snowy days. These distinct seasonal differences provide diverse experiences throughout the year.

The mean monthly precipitation over the year, including rain, hail and snow

The best time of year to visit Lewistown in the United States of America

During the months of June and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • Does Lewistown have a dry season?
    Yes, the months of January, February and December are very dry.
  • When is winter in Lewistown?
    The coldest season / winter is in the following months: January, February and December.
  • Which is the warmest month in Lewistown?
    July has an average maximum temperature of 28°C and is the warmest month of the year.
  • Which is the coldest month in Lewistown?
    The coldest month is December with an average maximum temperature of 1°C.
  • Which is the wettest month in Lewistown?
    May tops the wettest month list with 100 mm of rainfall.
  • Which is the driest month in Lewistown?
    February is the driest month with 16 mm of precipitation.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

    Forecast for Lewistown (MT)

    Sat   Nov 23
    5°C | -10°C
    NW 22 km/h
    0.9 mm
    broken clouds and  chance of slight sleet

    broken clouds and chance of slight sleet

    Sun   Nov 24
    -9°C | -14°C
    NW 14 km/h
    broken clouds and no rain

    broken clouds and no rain

    Mon   Nov 25
    3°C | -14°C
    SW 11 km/h
    broken clouds and no rain

    broken clouds and no rain