Viewing Station: ID-AD-21 : Boise City 6.1 SE
Jul 10, 2010 - Sep 23, 20265,788 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.47"
September 1-23, 2026(23 of 23 days covered by obs)
NOAA Normal
0.34"
Departure from Normal
0.13" : 139% of Normal
Year-To-Date: 8.21"
Jan 1 to Sep 23, 2026(266 of 266 days covered by obs)
NOAA Normal
8.59"
Departure from Normal
-0.38" : 96% of Normal
Water Year-To-Date: 12.74"
Oct 1, 2025 to Sep 23, 2026(358 of 358 days covered by obs)
NOAA Normal
12.63"
Departure from Normal
0.11" : 101% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.64
1.65
-0.01
Feb
1.12
1.16
-0.04
Mar
1.43
1.50
-0.07
Apr
1.36
1.33
0.03
May
1.49
1.65
-0.16
Jun
0.81
0.94
-0.13
Jul
0.21
0.23
-0.02
Aug
0.19
0.21
-0.02
Sep
0.44
0.44
0.00
Oct
0.89
0.90
-0.01
Nov
1.36
1.28
0.08
Dec
1.79
1.81
-0.02
12.73
13.10
-0.37