Viewing Station: IA-DW-6 : Hopkinton 5.4 WSW
Apr 15, 2014 - May 20, 20264,322 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 1.38"
May 1-20, 2026(20 of 20 days covered by obs)
NOAA Normal
2.94"
Departure from Normal
-1.56" : 47% of Normal
Year-To-Date: 13.47"
Jan 1 to May 20, 2026(140 of 140 days covered by obs)
NOAA Normal
11.67"
Departure from Normal
1.80" : 115% of Normal
Water Year-To-Date: 17.04"
Oct 1, 2025 to May 20, 2026(232 of 232 days covered by obs)
NOAA Normal
18.57"
Departure from Normal
-1.53" : 92% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.23
1.19
0.04
Feb
1.41
1.37
0.04
Mar
2.19
2.10
0.09
Apr
3.90
3.82
0.08
May
4.56
4.53
0.03
Jun
5.93
5.75
0.18
Jul
4.52
4.67
-0.15
Aug
4.06
4.23
-0.17
Sep
3.69
3.69
0.00
Oct
3.04
3.01
0.03
Nov
2.17
2.19
-0.02
Dec
1.69
1.64
0.05
38.39
38.19
0.20