Petaluma River - Black John Slough Entrance Rainfall Forecast

Today 10 Nov
No Rain
Wed 11 Nov
No Rain
Thu 12 Nov
30%
Fri 13 Nov
100%
Sat 14 Nov
30%
Sun 15 Nov
75%
Mon 16 Nov
35%

Petaluma River - Black John Slough Entrance Rainfall Statistics

November Rainfall

Novato / Gnoss Field (1.9 miles)

Total Rainfall 2026
1.5 in
Daily Average 2026
0 in
Wettest Day 28 May, 2026
0.4 in
Wet Days 2026
23/314 (7%)
Total Rainfall October
0.1 in
Daily Average October
0 in
Wettest Day 22 October, 2026
0.1 in
Wet Days October
2/31 (6%)
Total Rainfall November
0.2 in
Daily Average November
0.02 in
Wettest Day 3 November, 2026
0.1 in
Wet Days November
2/10 (20%)

Climate (2021–2025)

Novato / Gnoss Field (1.9 miles)

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Annual Average 2021–2025
11 in
Monthly Average 2021–2026
0.7 in
Daily Average 2021–2026
0.02 in
Wettest Day 4 February, 2025
2.2 in

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