2019-2020 Long Range Weather Forecast for Great Falls, MT

Get the Long Range Weather for Your Location

See long range weather forecasts for the next 60 days from The Old Farmer’s Almanac! Our long range forecasts can be used to make more informed decisions about future plans that depend on the weather, from vacations and weddings to sporting events and outdoor activities.

To see long term forecasts for the entire year, pick up a copy of The 2020 Old Farmer’s Almanac, available online and in stores.

Note: Long range forecasts are regional, not city-specific.

Free 2-Month Weather Forecast

December 2019 Long Range Weather Forecast for High Plains
DatesWeather Conditions
Dec 1-3Sunny, mild
Dec 4-8Snow showers, cold
Dec 9-11Sunny, mild
Dec 12-18Rain and snow showers, turning cold
Dec 19-31A few snow showers, mild
Decembertemperature 32.5° (6° above avg. north, 1° below south)
precipitation 0.5" (avg.)

January 2020 Long Range Weather Forecast for High Plains
DatesWeather Conditions
Jan 1-5Snowy periods, frigid
Jan 6-17Snow showers, mild
Jan 18-22Snow north, sunny south
Jan 23-27Sunny; frigid north, mild south
Jan 28-31Snow showers, frigid
Januarytemperature 27.5° (1.5° below avg. northwest, 1.5° above southeast)
precipitation 1" (0.5" above avg.)

Annual Weather Summary
November 2019 to October 2020

Winter will be milder than normal in the north and colder than normal in the south, with slightly above-normal precipitation. The coldest periods will be in mid-December and early January and from late January into mid-February. Snowfall will be above normal in the north and below normal in the south, with the snowiest periods in early January, early to mid-February, and early March. April and May will be cooler than normal, with precipitation mostly above normal. Summer temps will be above normal in the north and below normal in the south, with the hottest spells in late June, mid- and late July, and mid-August. It will be drier than normal. September and October will have above-normal temperatures and below-normal precipitation.

Map showing Old Farmer's Almanac long range weather region number 12

About the High Plains Region

The High Plains long range weather region includes all or part of the following states: COLORADO (Aurora, Colorado Springs, Denver, Greeley, Pueblo), KANSAS (Colby, Dodge City, Garden City, Liberal, Ulysses), MONTANA (Billings, Great Falls, Havre, Laurel, Miles City), NEBRASKA (Alliance, Kearney, Lexington, North Platte, Scottsbluff), NEW MEXICO (Clayton, Clovis, Portales, Raton, Tucumcari), NORTH DAKOTA (Bismarck, Dickinson, Mandan, Minot, Williston), OKLAHOMA (Beaver, Boise City, Goodwell, Guymon, Hooker), SOUTH DAKOTA (Belle Fourche, Pierre, Rapid City, Spearfish, Sturgis), TEXAS (Amarillo, Borger, Dumas, Hereford, Pampa), WYOMING (Casper, Cheyenne, Cody, Gillette, Sheridan).

High Plains Neighboring Regions

Here are the regions that neighbor the High Plains long range weather region:

Temperature and Precipitation November 2019 to October 2020

Temperature and Precipitation Chart, November 2019 to October 2020 for Great Falls, MT

Reader Comments

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Getting married in Sept 2020

Just curious when it rains/more likely will snow in the fall of 2020. I plan on getting married outdoors in September of 2020. is it too far out?

too soon for 2020

The Editors's picture

Sorry, Amber. We do not have forecasts beyond October 2019 at this time. Sept 2020 will be in the 2020 edition, available in late summer 2019.

Dec. weather

Planning on driving through CO between 12/14 and 12/24 from Chicago. Will it be okay?

weather for 11/2-11/3

wanting to know the weather for Denver area on 11/2 and 11/3 our son is planning on getting married and we have some out door things planned

2018 December weather for business Grand Opening

What Saturday in December will be the warmest?

Oct. 6, 2018

Denver Co Evening Wedding weather?

Long Range Weather Forecast for Colorado Springs, CO

Having a reunion in Colorado Springs in late Oct - Early Nov 2109. Any guess on the weather?

September 15, 2018 outdoor party

We’re having an outdoor party on September 15, 2018 near Brighton, CO. What is the predicted weather forecast?

Wedding Weather

My daughter is having an outdoor wedding on May, 18 2019 near Spearfish SD. What will the weather be like that day?

Wedding, Friday, September 21 in Loveland, CO

Would love to have an idea of general temperature and weather conditions for Friday, September 21 in Loveland, CO?

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