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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 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 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 Rhode Island South Carolina South Dakota Tennessee Texas Utah Vermont Virginia Washington West Virginia Wisconsin Wyoming

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« August 1999

October 1999 »

Colorado

Average Temperature Rankings, September 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	1901-2000 Mean	Anomaly	Rank (1895-2021)	Warmest/Coolest Since	Record
September 1999 1-Month	55.4°F (13.0°C)	57.3°F (14.1°C)	-1.9°F (-1.1°C)	18th Coolest	Coolest since: 1993	1912
				110th Warmest	Warmest since: 1998	2019
	Ties: 1916, 1934
Aug–Sep 1999 2-Month	60.4°F (15.8°C)	61.2°F (16.2°C)	-0.8°F (-0.4°C)	28th Coolest	Coolest since: 1993	1912
				100th Warmest	Warmest since: 1998	2019
	Ties: 1925, 1973, 1986, 1987, 2004
Jul–Sep 1999 3-Month	63.1°F (17.3°C)	63.2°F (17.3°C)	-0.1°F (0.0°C)	54th Coolest	Coolest since: 1993	1912
				74th Warmest	Warmest since: 1998	2019
	Ties: 1896, 1944, 1949, 1951, 1956, 2009
Jun–Sep 1999 4-Month	62.4°F (16.9°C)	62.7°F (17.1°C)	-0.3°F (-0.2°C)	40th Coolest	Coolest since: 1993	1912
				88th Warmest	Warmest since: 1998	2012, 2021
	Ties: 1944, 1976, 1982
May–Sep 1999 5-Month	60.0°F (15.6°C)	60.5°F (15.8°C)	-0.5°F (-0.2°C)	35th Coolest	Coolest since: 1995	1915
				93rd Warmest	Warmest since: 1998	2018
	Ties: 1898, 1982
Apr–Sep 1999 6-Month	56.7°F (13.7°C)	57.5°F (14.2°C)	-0.8°F (-0.5°C)	26th Coolest	Coolest since: 1995	1912
				102nd Warmest	Warmest since: 1998	2012
	Ties: 1918, 1927, 1941, 1944, 1961, 1971, 1983, 1993
Mar–Sep 1999 7-Month	54.2°F (12.3°C)	54.1°F (12.3°C)	0.1°F (0.0°C)	55th Coolest	Coolest since: 1995	1912
				73rd Warmest	Warmest since: 1998	2012
	Ties: 1922, 1930, 1947, 1959, 2008
Feb–Sep 1999 8-Month	51.6°F (10.9°C)	50.8°F (10.4°C)	0.8°F (0.5°C)	87th Coolest	Coolest since: 1997	1912
				41st Warmest	Warmest since: 1998	2012
	Ties: 1988, 1989, 2019
Jan–Sep 1999 9-Month	49.2°F (9.6°C)	47.8°F (8.8°C)	1.4°F (0.8°C)	105th Coolest	Coolest since: 1997	1912
				23rd Warmest	Warmest since: 1998	2012
	Ties: 1943, 2009
Dec 1998–Sep 1999 10-Month	46.9°F (8.3°C)	45.5°F (7.5°C)	1.4°F (0.8°C)	100th Coolest	Coolest since: 1998	1912
				27th Warmest	Warmest since: 1996	1934
	Ties: 1977
Nov 1998–Sep 1999 11-Month	46.1°F (7.8°C)	44.5°F (6.9°C)	1.6°F (0.9°C)	109th Coolest	Coolest since: 1998	1912
				18th Warmest	Warmest since: 1996	2018
	Ties: 1943, 1963, 1994, 2009
Oct 1998–Sep 1999 12-Month	46.1°F (7.8°C)	44.6°F (7.0°C)	1.5°F (0.8°C)	107th Coolest	Coolest since: 1998	1912
				20th Warmest	Warmest since: 1996	1934, 2000
	Ties: 1911, 1943, 2007, 2011
Apr 1998–Sep 1999 18-Month	50.3°F (10.2°C)	48.9°F (9.4°C)	1.4°F (0.8°C)	104th Coolest	Coolest since: 1998	1917
				23rd Warmest	Warmest since: 1981	2018
	Ties: 1978, 2005
Oct 1997–Sep 1999 24-Month	45.8°F (7.7°C)	44.5°F (6.9°C)	1.3°F (0.8°C)	103rd Coolest	Coolest since: 1998	1913
				23rd Warmest	Warmest since: 1982	2018
Oct 1996–Sep 1999 36-Month	45.7°F (7.6°C)	44.6°F (7.0°C)	1.1°F (0.6°C)	102nd Coolest	Coolest since: 1998	1914
				23rd Warmest	Warmest since: 1998	2018
	Ties: 1998, 2009, 2011
Oct 1995–Sep 1999 48-Month	45.8°F (7.7°C)	44.6°F (7.0°C)	1.2°F (0.7°C)	102nd Coolest	Coolest since: 1998	1915
				22nd Warmest	Warmest since: 1937	2018
	Ties: 1936
Oct 1994–Sep 1999 60-Month	45.7°F (7.6°C)	44.6°F (7.0°C)	1.1°F (0.6°C)	100th Coolest	Coolest since: 1998	1916
				23rd Warmest	Warmest since: 1938	2018

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, Average Temperature, published September 2022, retrieved on October 5, 2022 from https://www.ncdc.noaa.gov/cag/