Lake Sacajawea Rainfall Forecast

Today 23 May
No Rain
Sun 24 May
No Rain
Mon 25 May
20%
Tue 26 May
10%
Wed 27 May
10%
Thu 28 May
15%
Fri 29 May
20%

Lake Sacajawea Rainfall Statistics

May Rainfall

Tri-Cities Airport (18.6 miles)

Total Rainfall 2026
3.4in
Daily Average 2026
0.02in
Wettest Day 22 April, 2026
0.5in
Wet Days 2026
29/143 (20%)
Total Rainfall April
1.1in
Daily Average April
0.04in
Wettest Day 22 April, 2026
0.5in
Wet Days April
3/30 (10%)
Total Rainfall May
0.1in
Daily Average May
0in
Wettest Day 13 May, 2026
0.04in
Wet Days May
2/23 (9%)

Climate (2010–Present)

Tri-Cities Airport (18.6 miles)

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Annual Average 2021–2025
7.1in
Monthly Average 2021–2026
0.6in
Daily Average 2021–2026
0.02in
Wettest Day 17 May, 2025
0.7in

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