Napa River - Steamboat Slough Entrance Rainfall Forecast

Today 30 Dec
10%
Wed 31 Dec
95%
Thu 1 Jan
95%
Fri 2 Jan
85%
Sat 3 Jan
70%
Sun 4 Jan
55%
Mon 5 Jan
55%

Napa River - Steamboat Slough Entrance Rainfall Statistics

December Rainfall

Napa, Napa County Airport (1.9 miles)

Total Rainfall 2025
15.3in
Daily Average 2025
0.04in
Wettest Day 4 February, 2025
1.8in
Wet Days 2025
53/364 (15%)
Total Rainfall November
2.1in
Daily Average November
0.1in
Wettest Day 17 November, 2025
0.8in
Wet Days November
8/30 (27%)
Total Rainfall December
3.5in
Daily Average December
0.1in
Wettest Day 24 December, 2025
1.1in
Wet Days December
9/30 (30%)

Climate (2010–Present)

Napa, Napa County Airport (1.9 miles)

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Annual Average 2020–2024
17.9in
Monthly Average 2020–2025
1.6in
Daily Average 2020–2025
0.1in
Wettest Day 24 October, 2021
4.8in

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