South Fork Tolt Reservoir Rainfall Forecast

Today 27 Sep
No Rain
Mon 28 Sep
70%
Tue 29 Sep
95%
Wed 30 Sep
10%
Thu 1 Oct
5%
Fri 2 Oct
5%
Sat 3 Oct
No Rain

South Fork Tolt Reservoir Rainfall Statistics

September Rainfall

Renton Municipal Airport (29.2 miles)

Total Rainfall 2026
18.5in
Daily Average 2026
0.1in
Wettest Day 13 March, 2026
1.3in
Wet Days 2026
72/270 (27%)
Total Rainfall August
0.3in
Daily Average August
0.01in
Wettest Day 29 August, 2026
0.3in
Wet Days August
1/31 (3%)
Total Rainfall September
0.9in
Daily Average September
0.04in
Wettest Day 13 September, 2026
0.5in
Wet Days September
7/27 (26%)

Climate (2021–2025)

Renton Municipal Airport (29.2 miles)

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Annual Average 2021–2025
16.7in
Monthly Average 2021–2026
1.5in
Daily Average 2021–2026
0.1in
Wettest Day 28 October, 2021
1.5in

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