Viewing Station: CT-NL-38 : Old Lyme 3.4 ESE
Apr 14, 2018 - May 18, 20262,978 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 2.51"
May 1-18, 2026(18 of 18 days covered by obs)
NOAA Normal
2.04"
Departure from Normal
0.47" : 123% of Normal
Year-To-Date: 15.75"
Jan 1 to May 18, 2026(140 of 138 days covered by obs)
NOAA Normal
16.74"
Departure from Normal
-0.99" : 94% of Normal
Water Year-To-Date: 26.90"
Oct 1, 2025 to May 18, 2026(232 of 230 days covered by obs)
NOAA Normal
29.29"
Departure from Normal
-2.39" : 92% 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