Our Proprietary 10-Day Forecast

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Current warnings over Lewistown, Montana
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<p>Warnings from F5Weather</a></div>

United States weather warnings are issued by various organizations under NOAA. Most from the National Weather Service, but also Storm Prediction Center and National Hurricane Center.

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Current radar over Lewistown, Montana red dot
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<p>Live radar from F5Weather</a></div>

Our radar is based off of US NEXRAD and Canadian weather radar sites through the quality controlled MRMS system. It compiles various sources for radar data and filters out erroneous returns such as sun spikes and ground clutter. We then colorize the precipitation based on our methods for determining precipitation type. Rain is in shades of green, mixed precipitation and freezing rain in shades of pink and snow is in shades of blue.

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Current satellite over Lewistown, Montana red dot
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<p>Live satellite from F5Weather</a></div>

Our satellite is from the GOES-16. It is color enhanced by using a geocolor terrain background during the day and black marble city lights at night. The daytime satellite data is Visible satellite imagery, and nighttime uses Infrared bands. The bluish clouds are fog and low cloud. The whiteest clouds are the coldest, highest cloud tops.

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Current surface weather map around Fergus County, MT

This surface map is from the HRRR computer model. It is a 1-hour forecast, updated hourly, which is a good estimate of the current surface conditions. This map shows the current high and low pressure centers, pressure isobar contours, wind streamlines and thickness contours. It also shows the currently depicted preciptiation estimates, although this should not be a substitute for actual live radar. The purple dashed contour is the 5400m thickness line, which is often a good proxy for the rain/snow line.

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Temperatures right now near Lewistown, Montana

This is the latest surface temperatures as depicted by the HRRR computer model, updated hourly. Although these are not actual observations, this model is a very good representation of current conditions as it factors in observations, terrain and physics to give you more detailed temperatures in areas that do not have reporting weather stations. For the latest reports at specific locations, like in Lewistown, MT please see our current conditions data on the left and right side of this page, or go to our current conditions page.

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Surface wind speed map over Lewistown, MT

This map shows the latest HRRR computer model winds. This depiction of the current wind directions and speeds is an estimate from the computer model. For actual observations in Lewistown, MT, see the current conditions data on the left and right side of this page, or go to our current conditions page.

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Regional 24 hour rainfall expected near Lewistown, Montana

This is a forecast of the amount of precipitation expected over the next 24 hours from the HRRR weather forecast model. This is only one forecast depiction, and you should check other models to get a better idea of what may happen. You can view this and other models in more detail on our main weather forecast maps page. There, you will also be able to look at forecasts beyond just 24 hours and look at forecasts out to as far as 16 days.

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Area snowfall accumulation expected around Fergus County, Montana

This is snowfall forecast, with amounts anticipated in the next 24 hours. This guidance is from the HRRR weather model. For more model forecasts out to 16 days, visit our main weather forecast maps page.

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These are Convective Outlooks from the Storm Prediction Center. Click to see Days 1-3 broken down into Tornado, Wind and Hail threats, as well as days 5-8 outlooks.

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Atlantic Hurricane and Tropical Storm Tracking Map
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<p>Hurricane Tracking from F5Weather</a></div>

Our hurricane tracking map monitors for any current or forecast tropical disturbances in the Atlantic. (See our Pacific Hurricane Tracker) Various hurricane models will draw a 'spaghetti plot' in the Atlantic Basin when a disturbance is forecast or exists, showing the system's forecast track. Once a storm has developed, the National Hurricane Center will forecast their official track. This will show up on the map along with the storm's current intensity, track and name. We will also plot some of the storm's vitals and of course the spaghetti plots from the models along with the NHC forecast track will give you an idea of where it's heading, and its forecast intensity with time.

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To view the latest computer models, visit f5wx.com for access to the weather maps and guidance that meteorologists use to make their forecasts.
 
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  • American GFS
  • Canadian GDPS GEM
  • German DWD ICON
  • British MetOffice's UKMET Unified Model
  • American NAM
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  • GEFS, GEPS, MOGREPS & European Ensembles
  • Probabilities & Averages
  • 3-Ensemble Mean & more!
View Skew-T soundings, textual data tables for your location, and of course maps! Weather forecast maps of the basics like temperature, wind, pressure, humidity, dew point, cloud cover, simulated radar, travel weather, rainfall and snow are available. More advanced users can also get use out of our severe weather & tornado threat maps, as well as upper air & shear graphics.
 
See the latest forecast data as the models update.
 
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Climate Summary
(made with AI, use with caution)
Lewistown, Montana Climate Summary

General Climate

    •   Continental climate with cold, snowy winters and warm, dry summers.
    •   Located in the rain shadow of the Rocky Mountains, leading to relatively low precipitation.

Temperature

    •   Average Annual Temperature

44.1°F (6.7°C)

    •   Average January Temperature

20.7°F (-6.3°C)

    •   Average July Temperature

65.6°F (18.7°C)

    •   Record High Temperature

106°F (41.1°C)

    •   Record Low Temperature

-42°F (-41.1°C)

Precipitation

    •   Average Annual Precipitation

12.32 inches (31.3 cm)

    •   Driest Month

January (0.51 inches / 1.3 cm)

    •   Wettest Month

June (2.72 inches / 6.9 cm)

    •   Average Snowfall

33.9 inches (86.1 cm)

Wind

    •   Average Wind Speed

12.1 mph (19.5 km/h)

    •   Prevailing Wind Direction

West-northwest

Sunshine

    •   Average Annual Sunshine

3,021 hours

    •   Percentage of Possible Sunshine

66%

Other Climate Features

    •   Growing Season

120-130 days

    •   Hardiness Zone

4b

    •   Köppen Climate Classification

Dfb (Warm-summer Continental Climate)

Climate Extremes

    •   Lewistown has experienced extreme temperature swings, with record highs above 100°F (37.8°C) and record lows below -40°F (-40°C).
    •   The city is prone to occasional droughts and floods.
    •   Winter storms can bring heavy snowfall and strong winds.

Facts & Historical Information
(made with AI, use with caution)
Lewistown, Montana: A Natural History Haven

  • Dinosaur Mecca:

    Lewistown is renowned for its abundance of dinosaur fossils, earning it the nickname \

  • Tourist Attractions
    1.Bannack State Park:

    A well-preserved ghost town that offers a glimpse into Montana's mining history.

    2.Lewistown Art Center:

    Showcases a diverse collection of contemporary and historical art, including works by local and regional artists.

    3.Central Montana Museum:

    Features exhibits on local history, geology, and wildlife, including a collection of dinosaur fossils.

    Nearby Cities:

    Billings, MT
    Great Falls, MTHavre, MT
    Livingston, MTLaurel, MT
    Columbus, MTMalta, MT
    Townsend, MTRoundup, MT
    Big Timber, MTSun Prairie, MT
    Fort Benton, MT