2021 Long Range Weather Forecast for Great Falls, MT
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 2021 Old Farmer’s Almanac, available online and in stores.
Note: Long range forecasts are regional, not city-specific.
Free 2-Month Weather Forecast
| Dates | Weather Conditions |
|---|---|
| Jul 1-4 | Sunny, hot |
| Jul 5-9 | A few t-storms, turning cool |
| Jul 10-17 | Scattered t-storms, turning hot |
| Jul 18-26 | A few t-storms, turning cool |
| Jul 27-31 | Sunny, warm |
| July | temperature 72.5° (0.5° above avg.) precipitation 2" (avg.) |
| Dates | Weather Conditions |
|---|---|
| Aug 1-8 | Scattered t-storms, warm |
| Aug 9-19 | A few t-storms, hot |
| Aug 20-31 | Scattered t-storms, warm |
| August | temperature 73° (2° above avg.) precipitation 1" (avg. north, 2" below south) |
Annual Weather Summary
November 2020 to October 2021
November 2020 to October 2021
Winter will be milder than normal, with the coldest periods in mid-November, early to mid- and late December, late January, and late February. Precipitation will be above normal in the north and slightly below normal in the south. Snowfall will be above normal in most places, with the snowiest periods in mid-November, early and late December, mid- and late January, mid- to late February, and early March. April and May will see temperatures above normal in the north and below normal in the south, and overall the months will be slightly rainier than normal. Summer will be warmer than normal, with the hottest periods in early and late June, early and mid-July, and early to mid-August. Rainfall will be near to below normal. September and October will have below-normal temperatures, with precipitation below normal in the north and above normal in the south.
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, Fort Collins, Lakewood), KANSAS (Dodge City, Garden City, Liberal), MONTANA (Billings, Great Falls), NEBRASKA (Kearney, Lexington, North Platte, Scottsbluff), NEW MEXICO (Clovis, Portales), NORTH DAKOTA (Bismarck, Dickinson, Mandan, Minot, Williston), OKLAHOMA (Guymon), SOUTH DAKOTA (Pierre, Rapid City), TEXAS (Amarillo, Borger, Dumas, Hereford, Pampa), WYOMING (Casper, Cheyenne, Gillette, Sheridan).
High Plains Neighboring Regions
Here are the regions that neighbor the High Plains long range weather region:
Temperature and Precipitation November 2020 to October 2021
