Flat Lake Rainfall Forecast

Today 19 Dec
30%
Sat 20 Dec
45%
Sun 21 Dec
No Rain
Mon 22 Dec
10%
Tue 23 Dec
5%
Wed 24 Dec
5%
Thu 25 Dec
5%

Flat Lake Rainfall Statistics

December Rainfall

Sisseton, Sisseton Municipal Airport (21.7 miles)

Total Rainfall 2025
25in
Daily Average 2025
0.1in
Wettest Day 13 June, 2025
2.2in
Wet Days 2025
107/353 (30%)
Total Rainfall November
0.8in
Daily Average November
0.03in
Wettest Day 25 November, 2025
0.6in
Wet Days November
4/30 (13%)
Total Rainfall December
0.4in
Daily Average December
0.02in
Wettest Day 9 December, 2025
0.1in
Wet Days December
9/19 (47%)

Climate (2010–Present)

Sisseton, Sisseton Municipal Airport (21.7 miles)

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Annual Average 2020–2024
22.9in
Monthly Average 2020–2025
2.1in
Daily Average 2020–2025
0.1in
Wettest Day 8 August, 2021
3.3in

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