Mare Island Shoreline Heritage Preserve Rainfall Forecast

Today 6 Sep
No Rain
Mon 7 Sep
No Rain
Tue 8 Sep
5%
Wed 9 Sep
No Rain
Thu 10 Sep
5%
Fri 11 Sep
10%
Sat 12 Sep
5%

Mare Island Shoreline Heritage Preserve Rainfall Statistics

September Rainfall

Napa, Napa County Airport (8.7 miles)

Total Rainfall 2026
9.7in
Daily Average 2026
0.04in
Wettest Day 16 February, 2026
1.1in
Wet Days 2026
33/249 (13%)
Total Rainfall August
0in
Daily Average August
0in
Wettest Day 1 August, 2026
0in
Wet Days August
–
Total Rainfall September
0.1in
Daily Average September
0.02in
Wettest Day 3 September, 2026
0.1in
Wet Days September
1/6 (17%)

Climate (2021–2025)

Napa, Napa County Airport (8.7 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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