Viewing Station: CO-AR-290 : Littleton 1.5 NE
Sep 29, 2012 - Sep 20, 20264,151 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.25"
September 1-20, 2026(18 of 20 days covered by obs)
NOAA Normal
0.95"
Departure from Normal
-0.70" : 26% of Normal
Year-To-Date: 8.80"
Jan 1 to Sep 20, 2026(239 of 263 days covered by obs)
NOAA Normal
13.32"
Departure from Normal
-4.52" : 66% of Normal
Water Year-To-Date: 10.08"
Oct 1, 2025 to Sep 20, 2026(317 of 355 days covered by obs)
NOAA Normal
15.78"
Departure from Normal
-5.70" : 64% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.50
0.51
-0.01
Feb
0.58
0.64
-0.06
Mar
1.34
1.38
-0.04
Apr
2.01
2.10
-0.09
May
2.40
2.40
0.00
Jun
1.78
1.71
0.07
Jul
1.91
1.92
-0.01
Aug
1.85
1.79
0.06
Sep
1.43
1.30
0.13
Oct
1.12
1.19
-0.07
Nov
0.78
0.81
-0.03
Dec
0.56
0.54
0.02
16.26
16.29
-0.03