Riverton Rainfall Forecast

Today 17 Oct
35%
Sun 18 Oct
No Rain
Mon 19 Oct
No Rain
Tue 20 Oct
No Rain
Wed 21 Oct
No Rain
Thu 22 Oct
5%
Fri 23 Oct
5%

Riverton Rainfall Statistics

October Rainfall

Portland, Portland International Jetport (3.7 miles)

Total Rainfall 2026
33.4 in
Daily Average 2026
0.1 in
Wettest Day 14 May, 2026
2 in
Wet Days 2026
113/290 (39%)
Total Rainfall September
5.2 in
Daily Average September
0.2 in
Wettest Day 27 September, 2026
1.9 in
Wet Days September
15/30 (50%)
Total Rainfall October
1.5 in
Daily Average October
0.1 in
Wettest Day 13 October, 2026
1 in
Wet Days October
6/17 (35%)

Climate (2021–2025)

Portland, Portland International Jetport (3.7 miles)

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Annual Average 2021–2025
46.1 in
Monthly Average 2021–2026
3.9 in
Daily Average 2021–2026
0.1 in
Wettest Day 14 October, 2022
2.8 in

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