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 February 2020. For more information, please see Climatological Rankings.


Montana

Precipitation Rankings, September 1978

View Period (Months):All1234567891011121824364860
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2019)
Wettest/Driest
Since
Record
September 1978
1-Month
3.21"
(81.53mm)
1.46"
(37.08mm)
1.75"
(44.45mm)
122nd Driest Driest since: 1977 2012
4th Wettest Wettest since: 1941 1986
Aug–Sep 1978
2-Month
4.52"
(114.81mm)
2.77"
(70.36mm)
1.75"
(44.45mm)
118th Driest Driest since: 1977 2012
8th Wettest Wettest since: 1968 1985
Ties: 1965
Jul–Sep 1978
3-Month
7.15"
(181.61mm)
4.35"
(110.49mm)
2.80"
(71.12mm)
123rd Driest Driest since: 1977 2012
3rd Wettest Wettest since: 1915 1993
Jun–Sep 1978
4-Month
9.21"
(233.93mm)
7.22"
(183.39mm)
1.99"
(50.54mm)
114th Driest Driest since: 1977 1919
12th Wettest Wettest since: 1968 1993
May–Sep 1978
5-Month
13.96"
(354.58mm)
9.63"
(244.60mm)
4.33"
(109.98mm)
123rd Driest Driest since: 1977 1919
3rd Wettest Wettest since: 1915 1993
Apr–Sep 1978
6-Month
15.75"
(400.05mm)
11.14"
(282.96mm)
4.61"
(117.09mm)
124th Driest Driest since: 1977 1919
2nd Wettest Wettest to Date 1993
Mar–Sep 1978
7-Month
16.40"
(416.56mm)
12.42"
(315.47mm)
3.98"
(101.09mm)
123rd Driest Driest since: 1977 1919
3rd Wettest Wettest since: 1915 1993
Feb–Sep 1978
8-Month
17.67"
(448.82mm)
13.48"
(342.39mm)
4.19"
(106.43mm)
123rd Driest Driest since: 1977 1919
3rd Wettest Wettest since: 1927 1993
Jan–Sep 1978
9-Month
19.28"
(489.71mm)
14.83"
(376.68mm)
4.45"
(113.03mm)
123rd Driest Driest since: 1977 1919
3rd Wettest Wettest since: 1975 1993
Dec 1977–Sep 1978
10-Month
22.02"
(559.31mm)
16.12"
(409.45mm)
5.90"
(149.86mm)
124th Driest Driest since: 1977 1919
1st Wettest Wettest to Date 1978
Nov 1977–Sep 1978
11-Month
23.51"
(597.15mm)
17.41"
(442.21mm)
6.10"
(154.94mm)
124th Driest Driest since: 1977 1919
1st Wettest Wettest to Date 1978
Oct 1977–Sep 1978
12-Month
24.55"
(623.57mm)
18.65"
(473.71mm)
5.90"
(149.86mm)
124th Driest Driest since: 1977 1919
1st Wettest Wettest to Date 1978
Apr 1977–Sep 1978
18-Month
35.10"
(891.54mm)
29.81"
(757.17mm)
5.29"
(134.37mm)
117th Driest Driest since: 1977 1919
8th Wettest Wettest since: 1976 2011
Oct 1976–Sep 1978
24-Month
40.16"
(1,020.06mm)
37.33"
(948.18mm)
2.83"
(71.88mm)
97th Driest Driest since: 1977 1937
27th Wettest Wettest since: 1976 2011
Oct 1975–Sep 1978
36-Month
61.01"
(1,549.65mm)
56.02"
(1,422.91mm)
4.99"
(126.74mm)
107th Driest Driest since: 1977 1937
16th Wettest Wettest since: 1976 1909
Oct 1974–Sep 1978
48-Month
83.46"
(2,119.88mm)
74.76"
(1,898.90mm)
8.70"
(220.98mm)
119th Driest Driest since: 1977 1937
3rd Wettest Wettest since: 1909 1909
Oct 1973–Sep 1978
60-Month
103.86"
(2,638.04mm)
93.48"
(2,374.39mm)
10.38"
(263.65mm)
120th Driest Driest since: 1977 1937
1st Wettest Wettest to Date 1978

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published March 2020, retrieved on March 29, 2020 from https://www.ncdc.noaa.gov/cag/