Viewing Station: CT-NL-38 : Old Lyme 3.4 ESE
Apr 14, 2018 - Sep 17, 20252,734 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 2.00"
September 1-18, 2025(17 of 18 days covered by obs)
NOAA Normal
2.43"
Departure from Normal
-0.43" : 82% of Normal
Year-To-Date: 29.58"
Jan 1 to Sep 18, 2025(260 of 261 days covered by obs)
NOAA Normal
31.35"
Departure from Normal
-1.77" : 94% of Normal
Water Year-To-Date: 39.17"
Oct 1, 2024 to Sep 18, 2025(352 of 353 days covered by obs)
NOAA Normal
43.90"
Departure from Normal
-4.73" : 89% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
3.48
3.85
-0.37
Feb
2.97
3.46
-0.49
Mar
4.09
4.72
-0.63
Apr
4.16
4.43
-0.27
May
3.51
3.73
-0.22
Jun
3.86
4.00
-0.14
Jul
3.15
3.43
-0.28
Aug
3.70
4.15
-0.45
Sep
4.05
4.38
-0.33
Oct
4.54
4.68
-0.14
Nov
3.72
3.89
-0.17
Dec
4.29
4.74
-0.45
45.52
49.46
-3.94