Second Napa Slough Rainfall Forecast

Today 18 Apr
No Rain
Sun 19 Apr
15%
Mon 20 Apr
90%
Tue 21 Apr
90%
Wed 22 Apr
40%
Thu 23 Apr
5%
Fri 24 Apr
5%

Second Napa Slough Rainfall Statistics

April Rainfall

Napa, Napa County Airport (6.8 miles)

Total Rainfall 2026
7.1in
Daily Average 2026
0.1in
Wettest Day 16 February, 2026
1.1in
Wet Days 2026
25/108 (23%)
Total Rainfall March
0.1in
Daily Average March
0in
Wettest Day 31 March, 2026
0.1in
Wet Days March
2/31 (6%)
Total Rainfall April
1.6in
Daily Average April
0.1in
Wettest Day 11 April, 2026
0.8in
Wet Days April
5/18 (28%)

Climate (2010–Present)

Napa, Napa County Airport (6.8 miles)

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Annual Average 2021–2025
19.9in
Monthly Average 2021–2026
1.7in
Daily Average 2021–2026
0.1in
Wettest Day 24 October, 2021
4.8in

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