Potomac River - Mattox Creek Entrance Rainfall Forecast

Today 17 Sep
10%
Fri 18 Sep
25%
Sat 19 Sep
5%
Sun 20 Sep
25%
Mon 21 Sep
50%
Tue 22 Sep
60%
Wed 23 Sep
50%

Potomac River - Mattox Creek Entrance Rainfall Statistics

September Rainfall

St Marys County Airport (23 miles)

Total Rainfall 2026
12.5in
Daily Average 2026
0.05in
Wettest Day 22 July, 2026
1.9in
Wet Days 2026
58/260 (22%)
Total Rainfall August
1.6in
Daily Average August
0.1in
Wettest Day 10 August, 2026
0.7in
Wet Days August
11/31 (35%)
Total Rainfall September
1.4in
Daily Average September
0.1in
Wettest Day 4 September, 2026
1.4in
Wet Days September
2/17 (12%)

Climate (2021–2025)

St Marys County Airport (23 miles)

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Annual Average 2021–2025
41in
Monthly Average 2021–2026
3.3in
Daily Average 2021–2026
0.1in
Wettest Day 23 March, 2024
12.2in

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