Flathead Lake Rainfall Forecast

Today 16 May
75%
Sun 17 May
75%
Mon 18 May
No Rain
Tue 19 May
30%
Wed 20 May
10%
Thu 21 May
5%
Fri 22 May
15%

Flathead Lake Rainfall Statistics

May Rainfall

Kalispell, Glacier Park International Airport (30.4 miles)

Total Rainfall 2026
5.8in
Daily Average 2026
0.04in
Wettest Day 17 February, 2026
0.5in
Wet Days 2026
48/136 (35%)
Total Rainfall April
2.2in
Daily Average April
0.1in
Wettest Day 22 April, 2026
0.5in
Wet Days April
10/30 (33%)
Total Rainfall May
0.2in
Daily Average May
0.02in
Wettest Day 7 May, 2026
0.1in
Wet Days May
3/16 (19%)

Climate (2010–Present)

Kalispell, Glacier Park International Airport (30.4 miles)

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Annual Average 2021–2025
15in
Monthly Average 2021–2026
1.3in
Daily Average 2021–2026
0.04in
Wettest Day 2 November, 2023
1.4in

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