Viewing Station: CT-NL-44 : Old Lyme 0.5 W
Mar 21, 2019 - Sep 10, 20252,029 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 1.23"
September 1-11, 2025(12 of 11 days covered by obs)
NOAA Normal
1.49"
Departure from Normal
-0.26" : 83% of Normal
Year-To-Date: 20.01"
Jan 1 to Sep 11, 2025(214 of 254 days covered by obs)
NOAA Normal
30.40"
Departure from Normal
-10.39" : 66% of Normal
Water Year-To-Date: 24.71"
Oct 1, 2024 to Sep 11, 2025(287 of 346 days covered by obs)
NOAA Normal
42.94"
Departure from Normal
-18.23" : 58% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
3.49
3.81
-0.32
Feb
2.99
3.46
-0.47
Mar
4.00
4.66
-0.66
Apr
4.16
4.45
-0.29
May
3.52
3.74
-0.22
Jun
3.87
4.06
-0.19
Jul
3.16
3.53
-0.37
Aug
3.72
4.19
-0.47
Sep
4.06
4.44
-0.38
Oct
4.54
4.67
-0.13
Nov
3.74
3.87
-0.13
Dec
4.26
4.73
-0.47
45.51
49.61
-4.10