Potomac Rainfall Forecast

Today 13 Mar
5%
Sat 14 Mar
5%
Sun 15 Mar
10%
Mon 16 Mar
95%
Tue 17 Mar
40%
Wed 18 Mar
5%
Thu 19 Mar
10%

Potomac Rainfall Statistics

March Rainfall

Gaithersburg - Montgomery County Airport (10.6 miles)

Total Rainfall 2026
4.7in
Daily Average 2026
0.1in
Wettest Day 10 January, 2026
1in
Wet Days 2026
18/72 (25%)
Total Rainfall February
2.3in
Daily Average February
0.1in
Wettest Day 22 February, 2026
0.9in
Wet Days February
6/28 (21%)
Total Rainfall March
0.7in
Daily Average March
0.1in
Wettest Day 3 March, 2026
0.4in
Wet Days March
6/13 (46%)

Climate (2010–Present)

Gaithersburg - Montgomery County Airport (10.6 miles)

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Annual Average 2021–2025
26in
Monthly Average 2021–2026
2.1in
Daily Average 2021–2026
0.1in
Wettest Day 23 June, 2023
2.6in

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