Viewing Station: VA-FX-111 : Herndon 2.2 NNE
Sep 9, 2020 - Sep 17, 20251,179 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.95"
September 1-17, 2025(8 of 17 days covered by obs)
NOAA Normal
2.29"
Departure from Normal
-1.34" : 41% of Normal
Year-To-Date: 20.32"
Jan 1 to Sep 17, 2025(163 of 260 days covered by obs)
NOAA Normal
30.85"
Departure from Normal
-10.53" : 66% of Normal
Water Year-To-Date: 24.73"
Oct 1, 2024 to Sep 17, 2025(194 of 352 days covered by obs)
NOAA Normal
40.98"
Departure from Normal
-16.25" : 60% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.96
3.05
-0.09
Feb
2.55
2.64
-0.09
Mar
3.58
3.78
-0.20
Apr
3.31
3.40
-0.09
May
4.29
4.48
-0.19
Jun
4.22
4.35
-0.13
Jul
4.17
4.30
-0.13
Aug
3.48
3.70
-0.22
Sep
4.04
4.33
-0.29
Oct
3.64
3.85
-0.21
Nov
3.05
3.21
-0.16
Dec
3.44
3.57
-0.13
42.73
44.66
-1.93