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Weather alerts in Great Falls, Montana today
No National Weather Service alerts for Great Falls right now.
No warnings, watches or advisories are in effect. This page updates itself every 10 minutes.
Official weather alerts for Great Falls
No National Weather Service warnings, watches or advisories for Great Falls right now.
Storm Prediction Center · today's severe-storm outlook · issued 1 h ago
Great Falls is outside today's thunderstorm and severe-storm areas.
Official SPC Day 1 Convective Outlook (NOAA), valid until Sat, Oct 17, 6:00 AM MDT. It shows the chance of severe storms in the area, not a warning for your street. SPC outlook
U.S. Drought Monitor · map of October 13
21% of Montana is in drought, including 4.9% in extreme or exceptional drought.
Share of the state's area. Updated every Thursday by the U.S. Drought Monitor (National Drought Mitigation Center, USDA and NOAA). Drought builds over weeks and months: one rainy day rarely ends it.
Weather in Great Falls now
Rain forecast for Great Falls · next days
Automatic forecast from a computer model (MET Norway, data CC BY 4.0). Not an official alert: for watches and warnings, follow National Weather Service.
What do the inches mean?
As a rough guide: under a quarter inch in a day is light rain; 1 to 2 inches is a heavy downpour; more than 2 inches in a day is very heavy rain that can flood low-lying areas and roads.
Several rainy days in a row saturate the ground: even a modest storm can then cause flash flooding and rising rivers.
What is normal in October in Great Falls
changing season Dry, windy days keep wildfire risk high, and the first snowstorms arrive in the mountains.
El Niño is under way, and NOAA expects it to be strong (NOAA, October 8, 2026).
In New Mexico and the southern Rockies it tends to bring more winter snow; the northern Rockies tend to be warmer and drier.
These are general tendencies: every year is different, and your local forecast comes first.
Typical climate per NOAA and regional weather services. It describes the season, not the forecast for a given day.
Official sources for Montana
Emergency: 911