Climate at a Glance

Statewide Rankings

Look up monthly rankings for 1-12, 18, 24, 36, 48, and 60-month time periods using the options below. Data and statistics are as of April 2022. For more information, please see Climatological Rankings.


Colorado

Precipitation Rankings, September 1999

View Period (Months):All1234567891011121824364860
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Wettest/Driest
Since
Record
September 1999
1-Month
1.39"
(35.31mm)
1.43"
(36.32mm)
-0.04"
(-1.01mm)
71st Driest Driest since: 1998 1956
57th Wettest Wettest since: 1997 2013
Aug–Sep 1999
2-Month
4.66"
(118.36mm)
3.46"
(87.88mm)
1.20"
(30.48mm)
114th Driest Driest since: 1998 1944
14th Wettest Wettest since: 1997 2013
Jul–Sep 1999
3-Month
7.25"
(184.15mm)
5.56"
(141.22mm)
1.69"
(42.93mm)
117th Driest Driest since: 1998 1900
11th Wettest Wettest since: 1997 2013
Jun–Sep 1999
4-Month
8.89"
(225.81mm)
7.10"
(180.34mm)
1.79"
(45.47mm)
114th Driest Driest since: 1998 1924
14th Wettest Wettest since: 1997 1965
May–Sep 1999
5-Month
11.53"
(292.86mm)
9.12"
(231.65mm)
2.41"
(61.21mm)
117th Driest Driest since: 1998 1939
11th Wettest Wettest since: 1997 1965
Apr–Sep 1999
6-Month
15.91"
(404.11mm)
10.96"
(278.38mm)
4.95"
(125.73mm)
127th Driest Driest since: 1998 1939
1st Wettest Wettest to Date 1999
Mar–Sep 1999
7-Month
16.63"
(422.40mm)
12.47"
(316.74mm)
4.16"
(105.66mm)
123rd Driest Driest since: 1998 2002
5th Wettest Wettest since: 1995 1941
Feb–Sep 1999
8-Month
17.29"
(439.17mm)
13.56"
(344.42mm)
3.73"
(94.75mm)
122nd Driest Driest since: 1998 2002
6th Wettest Wettest since: 1995 1941
Jan–Sep 1999
9-Month
18.36"
(466.34mm)
14.62"
(371.35mm)
3.74"
(94.99mm)
123rd Driest Driest since: 1998 2002
5th Wettest Wettest since: 1995 1957
Ties: 1905
Dec 1998–Sep 1999
10-Month
18.99"
(482.35mm)
15.70"
(398.78mm)
3.29"
(83.57mm)
117th Driest Driest since: 1998 2002
10th Wettest Wettest since: 1997 1957
Nov 1998–Sep 1999
11-Month
20.33"
(516.38mm)
16.76"
(425.70mm)
3.57"
(90.68mm)
118th Driest Driest since: 1998 2002
9th Wettest Wettest since: 1997 1941
Oct 1998–Sep 1999
12-Month
22.83"
(579.88mm)
18.10"
(459.74mm)
4.73"
(120.14mm)
123rd Driest Driest since: 1998 2002
4th Wettest Wettest since: 1995 1995
Apr 1998–Sep 1999
18-Month
33.40"
(848.36mm)
29.08"
(738.63mm)
4.32"
(109.73mm)
120th Driest Driest since: 1998 2002
7th Wettest Wettest since: 1997 1942
Oct 1997–Sep 1999
24-Month
41.47"
(1,053.34mm)
36.22"
(919.99mm)
5.25"
(133.35mm)
120th Driest Driest since: 1998 2003
6th Wettest Wettest since: 1996 1942
Oct 1996–Sep 1999
36-Month
63.63"
(1,616.20mm)
54.27"
(1,378.46mm)
9.36"
(237.74mm)
123rd Driest Driest since: 1998 1956
2nd Wettest Wettest since: 1997 1997
Oct 1995–Sep 1999
48-Month
81.34"
(2,066.04mm)
72.31"
(1,836.67mm)
9.03"
(229.37mm)
119th Driest Driest since: 1997 1956
5th Wettest Wettest since: 1998 1998
Oct 1994–Sep 1999
60-Month
105.32"
(2,675.13mm)
90.33"
(2,294.38mm)
14.99"
(380.75mm)
122nd Driest Driest since: 1998 1956
1st Wettest Wettest to Date 1999

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published May 2022, retrieved on May 24, 2022 from https://www.ncdc.noaa.gov/cag/