Casper September 23 Weather Records

Daily averages and all-time records for weather in Casper, Wyoming for the date of September 23.

September 23 All-Time Records 1900–2023
Highest temperature	90 °F	1992
Lowest temperature	24 °F	2000
Lowest daily high	29 °F	2000
Highest daily low	61 °F	1924
Most precipitation	0.3 inches	2000
Most snow	4.5 inches	2000

September 23 All-Time Records
1900–2023

Highest temperature

90 °F

24 °F

29 °F

Highest daily low

61 °F

0.3 inches

4.5 inches

September 23 Average Weather 1991–2020 ¹
Average high	71.6 °F
Average low	39.6 °F
Chance precipitation	26.3%
Chance snow	4.6%

September 23 Average Weather
1991–2020 ¹

Average high

71.6 °F

Average low

39.6 °F

Chance precipitation

26.3%

Chance snow

4.6%

Casper September 23 Weather by Year

Year	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
2022	75	42	0.00	0.0
2021	75	38	0.00	0.0
2020	80	49	0.00	0.0
2019	78	38	0.00	0.0
2018	84	47	0.00	0.0
2017	44	37	0.10	0.0
2016	66	46	0.10	0.0
2015	87	50	0.00	0.0
2014	80	46	0.00	0.0
2013	70	39	0.00	0.0
2012	84	34	0.00	0.0
2011	86	45	0.00	0.0
2010	69	43	0.07	0.0
2009	69	33	0.00	0.0
2008	69	35	0.00	0.0
2007	66	47	0.04	0.0
2006	47	37	0.27	0.0
2005	79	48	0.01	0.0
2004	67	32	0.00	0.0
2003	78	44	0.00	0.0
2002	67	30	0.00	0.0
2001	76	34	0.00	0.0
2000	29	24	0.29	4.5
1999	80	39	0.00	0.0
1998	69	49	0.01	n/a
1997	53	37	0.09	n/a
1996	59	29	0.00	n/a
1995	53	34	0.07	0.0
1994	78	42	0.00	0.0
1993	71	41	0.00	0.0
1992	90	55	0.00	0.0
1991	59	32	0.00	0.0
1990	80	34	0.00	0.0
1989	75	37	0.00	0.0
1988	74	42	0.00	0.0
1987	86	41	0.00	0.0
1986	72	39	0.00	0.0
1985	45	27	0.00	0.0
1984	43	25	0.02	0.2
1983	83	35	0.00	0.0
1982	73	45	0.00	0.0
1981	73	40	0.00	0.0
1980	64	36	0.00	0.0
1979	86	44	0.00	0.0
1978	80	45	0.00	0.0
1977	59	40	0.12	0.0
1976	69	47	0.00	0.0
1975	75	36	0.00	0.0
1974	79	36	0.00	0.0
1973	79	46	0.00	0.0
1972	72	35	0.00	0.0
1971	70	31	0.00	0.0
1970	73	44	0.00	0.0
1969	77	41	0.00	0.0
1968	66	35	0.00	0.0
1967	72	44	0.00	0.0
1966	87	47	0.00	0.0
1965	45	28	0.00	0.0
1964	63	32	0.00	0.0
1963	79	50	0.00	0.0
1962	74	47	0.00	0.0
1961	52	32	0.29	0.7
1960	64	39	0.00	0.0
1959	47	38	0.12	0.0
1958	83	47	0.00	0.0
1957	79	40	0.00	0.0
1956	73	30	0.00	0.0
1955	55	35	0.00	0.0
1954	73	54	0.00	0.0
1953	75	49	0.00	0.0
1952	78	42	0.00	0.0
1951	50	34	0.02	0.0
1950	68	43	0.00	0.0
1949	86	35	0.00	0.0
1948	83	60	0.00	0.0
1939	73	44	0.00	0.0
1938	87	52	0.00	0.0
1936	66	43	0.00	0.0
1935	84	53	0.00	0.0
1934	77	31	0.15	0.0
1933	74	35	0.00	0.0
1932	75	38	0.00	0.0
1931	59	39	0.15	n/a
1930	60	52	n/a	n/a
1929	73	48	n/a	n/a
1928	71	35	n/a	n/a
1927	77	37	0.03	n/a
1926	72	29	n/a	n/a
1925	69	40	n/a	n/a
1924	79	61	n/a	n/a
1923	79	56	0.00	n/a
1922	83	41	0.00	n/a
1921	83	48	0.00	n/a
1920	67	45	0.02	n/a
1917	78	51	0.02	0.0
1916	73	38	0.00	n/a
1915	80	39	0.00	0.0
1914	74	29	0.00	0.0
1911	87	32	n/a	n/a
1901	81	30	0.00	0.0

What's the all-time high for Casper on 9/23?

For the date of Sep 23, the highest temperature ever reached in Casper history is 90 °F which happened in 1992.

Highest Temperatures in Casper on September 23

Rank	Temperature	Year
1	90 °F	1992
2	87 °F	2015
2	87 °F	1911
2	87 °F	1966
2	87 °F	1938
6	86 °F	1949
6	86 °F	2011
6	86 °F	1979
6	86 °F	1987
10	84 °F	2012
10	84 °F	1935
10	84 °F	2018

What's the all-time low for Casper on 9/23?

For the date of Sep 23, the lowest temperature ever reached in Casper history is 24 °F which happened in 2000.

Lowest Temperatures in Casper on September 23

Rank	Temperature	Year
1	24 °F	2000
2	25 °F	1984
3	27 °F	1985
4	28 °F	1965
5	29 °F	1996
5	29 °F	1914
5	29 °F	1926
8	30 °F	1901
8	30 °F	2002
8	30 °F	1956

Lowest High Temperatures in Casper on September 23

Rank	Temperature	Year
1	29 °F	2000
2	43 °F	1984
3	44 °F	2017
4	45 °F	1985
4	45 °F	1965
6	47 °F	2006
6	47 °F	1959
8	50 °F	1951
9	52 °F	1961
10	53 °F	1995
10	53 °F	1997

What's the most it has ever rained in Casper on 9/23?

For the date of Sep 23, the most precipitation ever recorded in Casper history is 0.29 inches which has happened 2 times, most recently in 2000.

All-Time Most Precipitation in Casper on September 23

Rank	Precipitation	Year
1	0.29 inches	2000
1	0.29 inches	1961
3	0.27 inches	2006
4	0.15 inches	1931
4	0.15 inches	1934
6	0.12 inches	1959
6	0.12 inches	1977
8	0.10 inches	2016
8	0.10 inches	2017
10	0.09 inches	1997

All-Time Most Snow in Casper on September 23

Rank	Precipitation	Year
1	4.5 inches	2000
2	0.7 inches	1961
3	0.2 inches	1984

Weather Station Details

Years	Station	Coordinates
1949–2023	Casper-Natrona County International Airport	location
1900–1948	Casper 2 E	location