Great Falls Park Rainfall Forecast

Today 15 Jul
No Rain
Thu 16 Jul
10%
Fri 17 Jul
15%
Sat 18 Jul
60%
Sun 19 Jul
50%
Mon 20 Jul
20%
Tue 21 Jul
40%

Great Falls Park Rainfall Statistics

July Rainfall

Washington/Dulles International Airport, DC (11.2 miles)

Total Rainfall 2026
22.9in
Daily Average 2026
0.1in
Wettest Day 28 June, 2026
2in
Wet Days 2026
69/196 (35%)
Total Rainfall June
4.3in
Daily Average June
0.1in
Wettest Day 28 June, 2026
2in
Wet Days June
9/30 (30%)
Total Rainfall July
3.7in
Daily Average July
0.3in
Wettest Day 9 July, 2026
1.4in
Wet Days July
9/15 (60%)

Climate (2021–2025)

Washington/Dulles International Airport, DC (11.2 miles)

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Annual Average 2021–2025
34.9in
Monthly Average 2021–2026
2.9in
Daily Average 2021–2026
0.1in
Wettest Day 25 October, 2021
2.4in

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