Viewing Station: VA-LD-35 : Ashburn 0.4 N
Aug 4, 2020 - Sep 15, 20251,325 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.14"
September 1-15, 2025(15 of 15 days covered by obs)
NOAA Normal
2.00"
Departure from Normal
-1.86" : 7% of Normal
Year-To-Date: 29.26"
Jan 1 to Sep 15, 2025(240 of 258 days covered by obs)
NOAA Normal
30.25"
Departure from Normal
-0.99" : 97% of Normal
Water Year-To-Date: 34.01"
Oct 1, 2024 to Sep 15, 2025(331 of 350 days covered by obs)
NOAA Normal
40.19"
Departure from Normal
-6.18" : 85% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.93
3.03
-0.10
Feb
2.50
2.58
-0.08
Mar
3.51
3.72
-0.21
Apr
3.27
3.38
-0.11
May
4.27
4.49
-0.22
Jun
4.26
4.34
-0.08
Jul
4.10
4.16
-0.06
Aug
3.41
3.61
-0.20
Sep
4.00
4.33
-0.33
Oct
3.59
3.88
-0.29
Nov
2.96
3.21
-0.25
Dec
3.39
3.59
-0.20
42.19
44.32
-2.13