Divisional Rankings

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Please note, Degree Days and Palmer Indices are not available for Alaska. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Montana, Climate Division 3. North Central

Precipitation Rankings, December 1917

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Record Driest
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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Wettest/Driest Since	Record
December 1917 1-Month	2.51" (63.75mm)	0.77" (19.56mm)	1.74" (44.19mm)	128th Driest	Driest since: 1916	1913
December 1917 1-Month	2.51" (63.75mm)	0.77" (19.56mm)	1.74" (44.19mm)	1st Wettest	Wettest to Date	1917
Nov–Dec 1917 2-Month	2.54" (64.52mm)	1.49" (37.85mm)	1.05" (26.67mm)	118th Driest	Driest since: 1916	1908
Nov–Dec 1917 2-Month	2.54" (64.52mm)	1.49" (37.85mm)	1.05" (26.67mm)	11th Wettest	Wettest since: 1906	1897
Oct–Dec 1917 3-Month	3.03" (76.96mm)	2.31" (58.67mm)	0.72" (18.29mm)	101st Driest	Driest since: 1916	1907
Oct–Dec 1917 3-Month	3.03" (76.96mm)	2.31" (58.67mm)	0.72" (18.29mm)	28th Wettest	Wettest since: 1914	1946
Sep–Dec 1917 4-Month	5.17" (131.32mm)	3.60" (91.44mm)	1.57" (39.88mm)	112th Driest	Driest since: 1916	1904
Sep–Dec 1917 4-Month	5.17" (131.32mm)	3.60" (91.44mm)	1.57" (39.88mm)	17th Wettest	Wettest since: 1911	1911
Aug–Dec 1917 5-Month	5.88" (149.35mm)	4.94" (125.48mm)	0.94" (23.87mm)	101st Driest	Driest since: 1915	1904
Aug–Dec 1917 5-Month	5.88" (149.35mm)	4.94" (125.48mm)	0.94" (23.87mm)	28th Wettest	Wettest since: 1916	1985
Jul–Dec 1917 6-Month	6.19" (157.23mm)	6.53" (165.86mm)	-0.34" (-8.63mm)	60th Driest	Driest since: 1913	1904
Jul–Dec 1917 6-Month	6.19" (157.23mm)	6.53" (165.86mm)	-0.34" (-8.63mm)	69th Wettest	Wettest since: 1916	1911
Jun–Dec 1917 7-Month	7.91" (200.91mm)	9.48" (240.79mm)	-1.57" (-39.88mm)	33rd Driest	Driest since: 1910	1904
Jun–Dec 1917 7-Month	7.91" (200.91mm)	9.48" (240.79mm)	-1.57" (-39.88mm)	96th Wettest	Wettest since: 1916	1993
May–Dec 1917 8-Month	9.46" (240.28mm)	11.64" (295.66mm)	-2.18" (-55.38mm)	29th Driest	Driest since: 1910	1904
May–Dec 1917 8-Month	9.46" (240.28mm)	11.64" (295.66mm)	-2.18" (-55.38mm)	100th Wettest	Wettest since: 1916	1927
Apr–Dec 1917 9-Month	10.86" (275.84mm)	12.74" (323.60mm)	-1.88" (-47.76mm)	30th Driest	Driest since: 1910	1904
Apr–Dec 1917 9-Month	10.86" (275.84mm)	12.74" (323.60mm)	-1.88" (-47.76mm)	99th Wettest	Wettest since: 1916	1927
Mar–Dec 1917 10-Month	11.47" (291.34mm)	13.55" (344.17mm)	-2.08" (-52.83mm)	26th Driest	Driest since: 1910	1904
Mar–Dec 1917 10-Month	11.47" (291.34mm)	13.55" (344.17mm)	-2.08" (-52.83mm)	103rd Wettest	Wettest since: 1916	1975
Feb–Dec 1917 11-Month	12.47" (316.74mm)	14.16" (359.66mm)	-1.69" (-42.92mm)	36th Driest	Driest since: 1913	1904
Feb–Dec 1917 11-Month	12.47" (316.74mm)	14.16" (359.66mm)	-1.69" (-42.92mm)	93rd Wettest	Wettest since: 1916	1927
Jan–Dec 1917 12-Month	13.25" (336.55mm)	14.96" (379.98mm)	-1.71" (-43.43mm)	35th Driest	Driest since: 1910	1904
Jan–Dec 1917 12-Month	13.25" (336.55mm)	14.96" (379.98mm)	-1.71" (-43.43mm)	94th Wettest	Wettest since: 1916	1927
Jul 1916–Dec 1917 18-Month	22.26" (565.40mm)	21.51" (546.35mm)	0.75" (19.05mm)	80th Driest	Driest since: 1914	1905
Jul 1916–Dec 1917 18-Month	22.26" (565.40mm)	21.51" (546.35mm)	0.75" (19.05mm)	48th Wettest	Wettest since: 1916	1927
Jan 1916–Dec 1917 24-Month	33.98" (863.09mm)	29.93" (760.22mm)	4.05" (102.87mm)	107th Driest	Driest since: 1915	1919
Jan 1916–Dec 1917 24-Month	33.98" (863.09mm)	29.93" (760.22mm)	4.05" (102.87mm)	21st Wettest	Wettest since: 1916	1897
Jan 1915–Dec 1917 36-Month	51.50" (1,308.10mm)	44.97" (1,142.24mm)	6.53" (165.86mm)	119th Driest	Driest since: 1915	1919
Jan 1915–Dec 1917 36-Month	51.50" (1,308.10mm)	44.97" (1,142.24mm)	6.53" (165.86mm)	8th Wettest	Wettest since: 1916	1898
Jan 1914–Dec 1917 48-Month	66.49" (1,688.85mm)	60.02" (1,524.51mm)	6.47" (164.34mm)	114th Driest	Driest since: 1915	1920
Jan 1914–Dec 1917 48-Month	66.49" (1,688.85mm)	60.02" (1,524.51mm)	6.47" (164.34mm)	12th Wettest	Wettest since: 1916	1899
Jan 1913–Dec 1917 60-Month	80.16" (2,036.06mm)	75.12" (1,908.05mm)	5.04" (128.01mm)	97th Driest	Driest since: 1914	1921
Jan 1913–Dec 1917 60-Month	80.16" (2,036.06mm)	75.12" (1,908.05mm)	5.04" (128.01mm)	28th Wettest	Wettest since: 1916	1899

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2023, retrieved on March 29, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings