Viewing Station: MD-SM-22 : Great Mills 4.0 S
Dec 30, 2020 - Sep 10, 20261,950 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 3.64"
September 1-10, 2026(9 of 10 days covered by obs)
NOAA Normal
1.35"
Departure from Normal
2.29" : 269% of Normal
Year-To-Date: 28.58"
Jan 1 to Sep 10, 2026(213 of 253 days covered by obs)
NOAA Normal
31.06"
Departure from Normal
-2.48" : 92% of Normal
Water Year-To-Date: 35.22"
Oct 1, 2025 to Sep 10, 2026(301 of 345 days covered by obs)
NOAA Normal
41.64"
Departure from Normal
-6.42" : 85% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
3.04
3.24
-0.20
Feb
2.68
2.78
-0.10
Mar
3.80
3.97
-0.17
Apr
3.26
3.30
-0.04
May
3.58
3.72
-0.14
Jun
4.18
4.16
0.02
Jul
4.53
4.68
-0.15
Aug
4.64
4.48
0.16
Sep
4.06
4.06
0.00
Oct
3.87
4.06
-0.19
Nov
3.16
3.16
0.00
Dec
3.55
3.69
-0.14
44.35
45.30
-0.95