Great Falls, MT weather in March
In March, Great Falls sees highs around 46°F and lows around 22°F: chilly and snowy. Expect about 8 wet days. Snowfall averages about 10.1 in. Pack for snow.
- Normal high
- 46°F
- Normal low
- 22°F
- Wet days
- 8
- 0.7 in total
- Snowfall
- 10.1 in
- snow on the ground 8 days
How March changes from start to finish
| March 1 | March 31 | |
|---|---|---|
| Normal high | 41°F | 51°F |
| Normal low | 17°F | 27°F |
| Chance of a wet day | 27% | 28% |
| Sunrise / sunset | 7:05 am / 6:09 pm | 7:05 am / 7:52 pm |
| Daylight | 11.1 h | 12.8 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Mountain Time).
A typical March day
- 6 am28°Fdew point 19°F
- 9 am34°Fdew point 21°F
- Noon40°Fdew point 20°F
- 3 pm43°Fdew point 20°F
- 6 pm39°Fdew point 21°F
- 9 pm33°Fdew point 20°F
NOAA hourly normals (local standard time) from Great Falls Intl Airport (4 mi away); average wind 12 mph; clear or few clouds in 55% of daytime hours, mostly cloudy or overcast in 38%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F2 of 31
- Hot dayshigh 90°F or more0 of 31
- Muggy daysdaily mean dew point 65°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow8 of 31
- Notable rainat least 0.10 in2 of 31
- Freezing nightslow 32°F or below25 of 31
- Snow on the groundsnow depth 1 in or more8 of 31
Average days per March, counted from daily records for each year 1991-2020.
Rain and snow in March
Normal precipitation is 0.7 in; a dry March brings about 0.4 in and a wet one about 0.9 in (25th and 75th percentiles). Days with half an inch or more are rare. Normal snowfall is 10.1 in, with about 3 days of an inch or more.
How March varies from year to year
- Warmest March, 1991-20202015: average high 57°F
- Coolest March2002: average high 27°F
- Wettest March2006: 1.7 in
- Driest March2015: 0.09 in
- Highest reading78°F (March 30, 2004)
- Lowest reading-32°F (March 3, 2019)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
March compared with February and April
| February | March | April | |
|---|---|---|---|
| Normal high | 37°F | 46°F | 55°F |
| Normal low | 15°F | 22°F | 30°F |
| Wet days | 8 | 8 | 10 |
| Comfortable days | 0 | 2 | 6 |
| Daylight | 10.3 h | 11.9 h | 13.7 h |
Highs change by +9°F from February and +9°F into April.
Nearby alternatives in March
- Cooler: West Yellowstone, MT196 mi · high 38°F · 14 wet days
How Great Falls ranks in March
- Normal high310th warmest of 378 cities; 3rd of 6 in Montana
- Wet days147th driest of 378
- Comfortable days266th most of 339
What to pack for Great Falls in March
- A warm jacket – lows near 22°F, highs near 46°F
- A rain jacket or umbrella – rain or snow on about 8 days
- Waterproof boots – about 10.1 in of snow in a typical year
- A hat and gloves – about 25 freezing nights
Heating and cooling
March has 958 heating degree days and 0 cooling degree days (base 65°F), 12% of the year's total heating and cooling demand.
Questions
How cold is Great Falls in March?
The normal high is 46°F and the normal low is 22°F. From 1991 to 2020 the coldest March reading was -32°F (March 3, 2019).
Does it rain a lot in Great Falls in March?
About 8 days in March have at least 0.01 in of precipitation, and the normal total is 0.7 in. The wettest March in 1991-2020 was in 2006 (1.7 in); the driest was in 2015 (0.09 in).
Does it snow in Great Falls in March?
Yes. Normal snowfall in March is 10.1 in, and snow covers the ground on about 8 days.
Is March a good time to visit Great Falls?
March ranks 8th of 12 months on our comfort score for Great Falls (48 out of 100). It has about 2 comfortable days. The best month is June.
Where the numbers come from
- Temperature, rain, snowfall, snow depth, frost dates, humidity and wind by hour and cloud cover: Great Falls Intl Airport (USW00024143), 4.2 mi WSW of the city center, 3,664 ft (335 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Great Falls International Airport (727750-24143), 4.3 mi WSW of the city center, 3,667 ft (338 ft higher than the city). Hourly observations, 1991-2020.