Flathead Lake State Park - Yellow Bay Unit Rainfall Forecast

Today 9 Sep
No Rain
Thu 10 Sep
25%
Fri 11 Sep
65%
Sat 12 Sep
20%
Sun 13 Sep
60%
Mon 14 Sep
50%
Tue 15 Sep
10%

Flathead Lake State Park - Yellow Bay Unit Rainfall Statistics

September Rainfall

Kalispell, Glacier Park International Airport (31.1 miles)

Total Rainfall 2026
15.2in
Daily Average 2026
0.1in
Wettest Day 7 September, 2026
1.2in
Wet Days 2026
87/252 (35%)
Total Rainfall August
1.1in
Daily Average August
0.04in
Wettest Day 16 August, 2026
0.8in
Wet Days August
5/31 (16%)
Total Rainfall September
2in
Daily Average September
0.3in
Wettest Day 7 September, 2026
1.2in
Wet Days September
6/9 (67%)

Climate (2021–2025)

Kalispell, Glacier Park International Airport (31.1 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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