Herndon Rainfall Forecast

Today 15 May
No Rain
Sat 16 May
10%
Sun 17 May
5%
Mon 18 May
10%
Tue 19 May
10%
Wed 20 May
65%
Thu 21 May
55%

Herndon Rainfall Statistics

May Rainfall

Bluefield, Mercer County Airport (16.2 miles)

Total Rainfall 2026
11in
Daily Average 2026
0.1in
Wettest Day 10 January, 2026
0.9in
Wet Days 2026
52/135 (39%)
Total Rainfall April
1.7in
Daily Average April
0.1in
Wettest Day 5 April, 2026
0.5in
Wet Days April
11/30 (37%)
Total Rainfall May
1.4in
Daily Average May
0.1in
Wettest Day 11 May, 2026
0.8in
Wet Days May
3/15 (20%)

Climate (2010–Present)

Bluefield, Mercer County Airport (16.2 miles)

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Annual Average 2021–2025
39.5in
Monthly Average 2021–2026
3.2in
Daily Average 2021–2026
0.1in
Wettest Day 29 May, 2023
2.9in

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