0in

Rain Today

Rain Last Hour
0in

Recorded at Lancaster County-mc Whirter Field Updated 32 mins ago (10.6 miles away)

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Real-Time Extremes

Hottest 89.5 °F
VK 786/Petronius (Chevron), AL
Coldest 26.5 °F
West Yellowstone, MT
Windiest 31.1mph
Godthaab / Nuuk, ME
Wettest (Last Hour) 0.5in
Bloomington/Normal, Central Illinois Regional Airport at Bloomington-Normal, IL
Most Humid 100%
Juliett, MT
Least Humid 14%
Borrego Valley Airport, CA
Highest Pressure 1040.6 hPa
Salida - Monarch Pass, CO
Lowest Pressure 987.8 hPa
Shenandoah Municipal, IA

Trending Locations

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Great Falls Rainfall Forecast

Today 16 Sep
No Rain
Thu 17 Sep
No Rain
Fri 18 Sep
50%
Sat 19 Sep
25%
Sun 20 Sep
10%
Mon 21 Sep
40%
Tue 22 Sep
55%

Great Falls Rainfall Statistics

September Rainfall

Lancaster County-mc Whirter Field (10.6 miles)

Total Rainfall 2026
19.5in
Daily Average 2026
0.1in
Wettest Day 24 July, 2026
1.6in
Wet Days 2026
79/259 (31%)
Total Rainfall August
3.3in
Daily Average August
0.1in
Wettest Day 1 August, 2026
0.9in
Wet Days August
14/31 (45%)
Total Rainfall September
0.1in
Daily Average September
0.01in
Wettest Day 12 September, 2026
0.1in
Wet Days September
3/16 (19%)

Climate (2021–2025)

Lancaster County-mc Whirter Field (10.6 miles)

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Annual Average 2021–2025
42.1in
Monthly Average 2021–2026
2.2in
Daily Average 2021–2026
0.1in
Wettest Day 18 February, 2025
9.2in

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