Big Island CCC Tank Rainfall Forecast

Today 24 Sep
50%
Fri 25 Sep
55%
Sat 26 Sep
10%
Sun 27 Sep
5%
Mon 28 Sep
75%
Tue 29 Sep
75%
Wed 30 Sep
25%

Big Island CCC Tank Rainfall Statistics

September Rainfall

Grants, Grants-Milan Municipal Airport (64 miles)

Total Rainfall 2026
6.7in
Daily Average 2026
0.03in
Wettest Day 22 September, 2026
0.8in
Wet Days 2026
36/267 (13%)
Total Rainfall August
1in
Daily Average August
0.03in
Wettest Day 20 August, 2026
0.3in
Wet Days August
9/31 (29%)
Total Rainfall September
1.7in
Daily Average September
0.1in
Wettest Day 22 September, 2026
0.8in
Wet Days September
9/24 (38%)

Climate (2021–2025)

Grants, Grants-Milan Municipal Airport (64 miles)

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Annual Average 2021–2025
8.3in
Monthly Average 2021–2026
0.7in
Daily Average 2021–2026
0.03in
Wettest Day 21 June, 2024
2in

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