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City 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 August 2022. For more information, please see Climatological Rankings.

Parameter: Average Temperature Maximum Temperature Minimum Temperature Precipitation Cooling Degree Days Heating Degree Days Palmer Drought Severity Index (PDSI) Palmer Hydrological Drought Index (PHDI) Palmer Modified Drought Index (PMDI) Palmer Z-Index

Year: 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022

Month: January February March April May June July August September October November December

State: Alabama Alaska Arizona Arkansas California Colorado Connecticut Delaware Florida Georgia Hawaii Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North Carolina North Dakota Ohio Oklahoma Oregon Pennsylvania Puerto Rico Rhode Island South Carolina South Dakota Tennessee Texas Utah Vermont Virginia Washington Washington, D.C. West Virginia Wisconsin Wyoming

City: Billings Glasgow Great Falls Helena Missoula

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« April 1999

June 1999 »

Great Falls, Montana

Average Temperature Rankings, May 1999

View Period (Months):All1234567891011121824364860

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• Record Coolest
• Bottom 1/10
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• Top 1/3
• Top 1/10
• Record Warmest

Period	Value	1981-2010 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
May 1999 1-Month	50.1°F (10.1°C)	52.1°F (11.2°C)	-2.0°F (-1.1°C)	27th Coolest	Coolest since: 1996	1927
				102nd Warmest	Warmest since: 1998	1936
	Ties: 1983
Apr–May 1999 2-Month	45.2°F (7.3°C)	47.7°F (8.7°C)	-2.5°F (-1.4°C)	25th Coolest	Coolest since: 1997	1975
				104th Warmest	Warmest since: 1998	1934
	Ties: 1959
Mar–May 1999 3-Month	42.8°F (6.0°C)	43.3°F (6.3°C)	-0.5°F (-0.3°C)	57th Coolest	Coolest since: 1997	2002
				72nd Warmest	Warmest since: 1998	1910
	Ties: 1911
Feb–May 1999 4-Month	40.8°F (4.9°C)	39.3°F (4.1°C)	1.5°F (0.8°C)	102nd Coolest	Coolest since: 1997	2019
				27th Warmest	Warmest since: 1998	1934
	Ties: 1921, 1941, 1976
Jan–May 1999 5-Month	38.2°F (3.4°C)	36.6°F (2.6°C)	1.6°F (0.8°C)	106th Coolest	Coolest since: 1998	1982
				23rd Warmest	Warmest since: 1992	1934
	Ties: 2000
Dec 1998–May 1999 6-Month	36.1°F (2.3°C)	34.7°F (1.5°C)	1.4°F (0.8°C)	101st Coolest	Coolest since: 1997	1969
				27th Warmest	Warmest since: 1998	1992
	Ties: 1908, 1980
Nov 1998–May 1999 7-Month	36.0°F (2.2°C)	34.5°F (1.4°C)	1.5°F (0.8°C)	102nd Coolest	Coolest since: 1997	1979
				26th Warmest	Warmest since: 1998	1926
	Ties: 1983
Oct 1998–May 1999 8-Month	37.4°F (3.0°C)	36.0°F (2.2°C)	1.4°F (0.8°C)	102nd Coolest	Coolest since: 1997	1899
				25th Warmest	Warmest since: 1998	1987
	Ties: 1919, 1921, 1964
Sep 1998–May 1999 9-Month	40.3°F (4.6°C)	38.3°F (3.5°C)	2.0°F (1.1°C)	109th Coolest	Coolest since: 1998	1899
				18th Warmest	Warmest since: 1992	1934
	Ties: 1946, 1963
Aug 1998–May 1999 10-Month	43.2°F (6.2°C)	41.1°F (5.1°C)	2.1°F (1.1°C)	115th Coolest	Coolest since: 1998	1978
				12th Warmest	Warmest since: 1992	1934
	Ties: 1946, 1964
Jul 1998–May 1999 11-Month	45.6°F (7.6°C)	43.5°F (6.4°C)	2.1°F (1.2°C)	115th Coolest	Coolest since: 1998	1899
				12th Warmest	Warmest since: 1992	1934
	Ties: 1939, 2013
Jun 1998–May 1999 12-Month	46.4°F (8.0°C)	44.8°F (7.1°C)	1.6°F (0.9°C)	109th Coolest	Coolest since: 1998	1899, 1917
				18th Warmest	Warmest since: 1992	1934
	Ties: 1921, 1981, 1988, 2004, 2006
Dec 1997–May 1999 18-Month	43.1°F (6.2°C)	41.5°F (5.3°C)	1.6°F (0.9°C)	113th Coolest	Coolest since: 1998	1979
				13th Warmest	Warmest since: 1988	1988
	Ties: 1926, 1935, 1940, 1941
Jun 1997–May 1999 24-Month	46.2°F (7.9°C)	44.9°F (7.2°C)	1.3°F (0.7°C)	109th Coolest	Coolest since: 1998	1979
				16th Warmest	Warmest since: 1992	1932, 1988
	Ties: 1977
Jun 1996–May 1999 36-Month	44.8°F (7.1°C)	44.9°F (7.2°C)	-0.1°F (-0.1°C)	76th Coolest	Coolest since: 1998	1952
				47th Warmest	Warmest since: 1993	1941
	Ties: 1903, 1945, 1960, 1968, 1976, 1991, 2003, 2010
Jun 1995–May 1999 48-Month	44.1°F (6.7°C)	44.8°F (7.1°C)	-0.7°F (-0.4°C)	39th Coolest	Coolest since: 1998	1952
				82nd Warmest	Warmest since: 1995	1934
	Ties: 1923, 1958, 1973, 1975, 2011
Jun 1994–May 1999 60-Month	44.3°F (6.8°C)	44.8°F (7.1°C)	-0.5°F (-0.3°C)	47th Coolest	Coolest since: 1998	1952
				72nd Warmest	Warmest since: 1995	1935
	Ties: 1957, 1981, 2020

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: City Time Series, Average Temperature, published September 2022, retrieved on October 6, 2022 from https://www.ncdc.noaa.gov/cag/