Great Falls weather
At 8:00 PM local time it was cloudy and 5°C (41°F). Real rain for 6 hours (9.0 mm total) — consider moving outdoor plans. Best months for weather: Jun–Sep. Great Falls sits 1015 m (3,330 ft) above sea level, which keeps it cooler than the coast. Below: today's sky, the hour-by-hour rain chance and the 16-day forecast for Great Falls, Montana, United States.
Current conditions
- Clouds
- 100%
- Chance of rain
- 12%
- Rain
- 0.0 mm/h
Hourly Forecast
Real rain for 6 hours (9.0 mm total) — consider moving outdoor plans
Daily Forecast
Best Time to Visit
Peak season Jun–SepOff season Nov–Apr
About Great Falls weather
Is it raining in Great Falls right now?
No. It’s cloudy and 5° right now. Real rain for 6 hours (9.0 mm total) — consider moving outdoor plans.
What’s the weather like in Great Falls this week?
Over the next 7 days, expect highs of 4–14° and lows of 0–6°. Rain is likely on 2 of 7 days (Sunday, Monday). The driest day looks like Tuesday.
Has it been raining in Great Falls lately?
In the past 7 days, Great Falls had 1 rainy day and 1.1 mm of rain in total.
What should I pack for Great Falls?
For the coming week, bring an umbrella or rain jacket and a warm winter coat.
Great Falls weather by month
When is the best time to visit Great Falls?
Based on weather alone, the best time to visit Great Falls is Jun–Sep, according to NASA's 2001–2025 climate averages. Nov–Apr tends to be the least pleasant. Average highs run from 0°C (31°F) in December to 29°C (85°F) in July.
What is the rainiest month in Great Falls?
June is the wettest month, with about 80 mm (3.1 in) of rain on average. December is the driest, with about 24 mm (0.9 in).
What is the hottest month in Great Falls?
July is the warmest, with average highs of 29°C (85°F) and lows of 14°C (57°F). December is the coolest, with highs of 0°C (31°F) and lows of -8°C (17°F).
Does Great Falls have a rainy season?
Not a strong one. No month averages more than 150 mm of rain; the wettest is June at about 80 mm (3.1 in).
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis), forecast and current conditions from Open-Meteo. Page updated . How we rate months