Isthmus Slough - Coalbank Slough Entrance Rainfall Forecast

Today 14 Apr
100%
Wed 15 Apr
100%
Thu 16 Apr
45%
Fri 17 Apr
No Rain
Sat 18 Apr
70%
Sun 19 Apr
85%
Mon 20 Apr
70%

Isthmus Slough - Coalbank Slough Entrance Rainfall Statistics

April Rainfall

Southwest Oregon Regional Airport (4.3 miles)

Total Rainfall 2026
16.2in
Daily Average 2026
0.2in
Wettest Day 23 February, 2026
3.5in
Wet Days 2026
40/104 (38%)
Total Rainfall March
2.2in
Daily Average March
0.1in
Wettest Day 4 March, 2026
0.8in
Wet Days March
15/31 (48%)
Total Rainfall April
0.1in
Daily Average April
0.01in
Wettest Day 1 April, 2026
0.1in
Wet Days April
1/14 (7%)

Climate (2010–Present)

Southwest Oregon Regional Airport (4.3 miles)

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Annual Average 2021–2025
49.2in
Monthly Average 2021–2026
4in
Daily Average 2021–2026
0.1in
Wettest Day 23 February, 2026
3.5in

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