Casper, WY

42.898°N, 106.474°W · station CPRthr · 1939–2026 · 88 years · normal 12.2 in/yr

The Accumulation Ribbon

Every day of the year at Casper: how the rain adds up. The filled curve is the normal running total; the dashed lines are the wettest (1982) and driest (2020) years on record; the white line is 2026 so far.

Normal to date Wettest / driest year 2026 so far normal annual 12.2 in

All-Time Extremes

Wettest day ever

2.80in

Apr 13, 1941

Wettest month ever

6.46in

May 1978

Wettest year

20.5in

1982 · mean 12.1 in

Driest year

5.8in

2020 · mean 12.1 in

Longest dry streak

55 days

< 0.01 in · ended 1965-11-23

Longest wet streak

12 days

≥ 0.01 in · ended 1957-05-22

Records by Month

Month	Wettest day	Normal	Wettest month
Jan	0.55″ Jan 11, 2023	0.48″	1.99″ 2023
Feb	0.59″ Feb 14, 1995	0.51″	1.42″ 1987
Mar	1.08″ Mar 31, 2017	0.83″	2.83″ 2021
Apr	2.80″ Apr 13, 1941	1.27″	5.75″ 1941
May	2.22″ May 17, 2000	1.97″	6.46″ 1978
Jun	2.15″ Jun 19, 1986	1.07″	4.69″ 2003
Jul	1.78″ Jul 22, 1983	1.00″	3.54″ 2007
Aug	2.21″ Aug 2, 2007	0.61″	2.79″ 1941
Sep	2.01″ Sep 20, 1989	0.72″	3.40″ 1982
Oct	2.06″ Oct 16, 1998	0.92″	4.62″ 1998
Nov	0.99″ Nov 2, 1994	0.62″	2.72″ 1983
Dec	1.26″ Dec 24, 1982	0.47″	3.71″ 1982

Record Daily Rainfall

The heaviest one-day rainfall ever recorded on each calendar date — when Casper's big rains fall.

Year by Year

Wettest years

1982	20.48 in
1995	18.94 in
1983	18.41 in
1978	17.64 in
1941	16.24 in

The Full Record

Every day of the year: normal daily precip, the record one-day total with its year, how often it rains, and the cumulative normal. Type to filter, click a column to sort.

Show me the data — the full daily record

Date	Normal	Record 1-day	Yr	Wet-day %	Cum. normal
Jan 1	0.02″	0.27″	2023	20%	0.02″
Jan 2	0.02″	0.23″	2023	22%	0.03″
Jan 3	0.02″	0.39″	1944	22%	0.05″
Jan 4	0.02″	0.27″	1996	23%	0.07″
Jan 5	0.02″	0.53″	1987	24%	0.09″
Jan 6	0.02″	0.29″	1987	22%	0.10″
Jan 7	0.01″	0.15″	2016	15%	0.12″
Jan 8	0.01″	0.33″	1985	32%	0.13″
Jan 9	0.02″	0.24″	1984	20%	0.15″
Jan 10	0.02″	0.16″	2023	23%	0.16″
Jan 11	0.01″	0.55″	2023	30%	0.18″
Jan 12	0.01″	0.53″	1972	14%	0.19″
Jan 13	0.01″	0.11″	1984	17%	0.21″
Jan 14	0.01″	0.26″	1953	14%	0.22″
Jan 15	0.02″	0.30″	1943	29%	0.24″
Jan 16	0.02″	0.52″	1995	24%	0.25″
Jan 17	0.02″	0.23″	1996	21%	0.27″
Jan 18	0.02″	0.17″	2023	24%	0.28″
Jan 19	0.01″	0.22″	1991	18%	0.30″
Jan 20	0.01″	0.53″	2018	24%	0.32″
Jan 21	0.02″	0.44″	2022	22%	0.33″
Jan 22	0.02″	0.28″	2012	29%	0.35″
Jan 23	0.02″	0.22″	2021	26%	0.37″
Jan 24	0.02″	0.31″	2009	28%	0.38″
Jan 25	0.02″	0.33″	1954	24%	0.40″
Jan 26	0.02″	0.35″	1984	22%	0.42″
Jan 27	0.02″	0.31″	2000	24%	0.44″
Jan 28	0.02″	0.30″	1970	29%	0.45″
Jan 29	0.02″	0.18″	1994	21%	0.47″
Jan 30	0.02″	0.33″	2016	18%	0.49″
Jan 31	0.02″	0.18″	1981	18%	0.50″
Feb 1	0.02″	0.39″	1989	30%	0.52″
Feb 2	0.02″	0.30″	2003	25%	0.54″
Feb 3	0.02″	0.32″	1955	26%	0.55″
Feb 4	0.02″	0.23″	2015	23%	0.57″
Feb 5	0.02″	0.33″	2006	31%	0.59″
Feb 6	0.01″	0.21″	1986	21%	0.60″
Feb 7	0.02″	0.31″	2017	29%	0.62″
Feb 8	0.02″	0.21″	1966	22%	0.63″
Feb 9	0.02″	0.35″	1960	29%	0.65″
Feb 10	0.02″	0.31″	1993	25%	0.67″
Feb 11	0.02″	0.21″	1978	16%	0.69″
Feb 12	0.02″	0.30″	1990	26%	0.71″
Feb 13	0.02″	0.34″	1952	28%	0.72″
Feb 14	0.02″	0.59″	1995	39%	0.74″
Feb 15	0.02″	0.26″	2006	31%	0.76″
Feb 16	0.02″	0.25″	2022	21%	0.78″
Feb 17	0.02″	0.26″	1992	23%	0.80″
Feb 18	0.02″	0.28″	2026	30%	0.83″
Feb 19	0.02″	0.30″	2012	25%	0.85″
Feb 20	0.02″	0.42″	2011	26%	0.87″
Feb 21	0.02″	0.28″	2023	26%	0.89″
Feb 22	0.02″	0.37″	1977	33%	0.91″
Feb 23	0.02″	0.40″	2017	28%	0.94″
Feb 24	0.02″	0.40″	1956	23%	0.96″
Feb 25	0.02″	0.31″	1998	30%	0.98″
Feb 26	0.02″	0.47″	1987	25%	1.01″
Feb 27	0.02″	0.21″	1948	23%	1.03″
Feb 28	0.02″	0.21″	1994	24%	1.05″
Feb 29	0.03″	0.29″	1943	22%	1.08″
Mar 1	0.03″	0.48″	2015	34%	1.10″
Mar 2	0.02″	0.25″	1964	31%	1.13″
Mar 3	0.02″	0.42″	1980	32%	1.15″
Mar 4	0.02″	0.81″	2010	22%	1.17″
Mar 5	0.03″	0.77″	2025	32%	1.20″
Mar 6	0.03″	0.32″	2014	23%	1.22″
Mar 7	0.02″	0.35″	1979	26%	1.25″
Mar 8	0.02″	0.56″	1992	26%	1.27″
Mar 9	0.02″	0.37″	1956	24%	1.29″
Mar 10	0.02″	0.25″	1975	25%	1.32″
Mar 11	0.02″	0.63″	1954	23%	1.34″
Mar 12	0.02″	0.96″	2019	29%	1.36″
Mar 13	0.02″	0.85″	2021	33%	1.38″
Mar 14	0.02″	0.33″	1986	26%	1.41″
Mar 15	0.02″	0.30″	2021	22%	1.43″
Mar 16	0.02″	0.35″	1961	33%	1.45″
Mar 17	0.02″	0.95″	1954	30%	1.47″
Mar 18	0.03″	0.75″	1969	33%	1.50″
Mar 19	0.03″	0.71″	1987	29%	1.52″
Mar 20	0.03″	0.28″	2013	23%	1.55″
Mar 21	0.03″	0.39″	2023	33%	1.57″
Mar 22	0.03″	0.88″	2009	33%	1.60″
Mar 23	0.03″	0.45″	1959	33%	1.63″
Mar 24	0.03″	0.39″	1944	34%	1.66″
Mar 25	0.03″	0.98″	1958	38%	1.70″
Mar 26	0.03″	0.37″	2007	36%	1.73″
Mar 27	0.03″	0.50″	2007	26%	1.77″
Mar 28	0.03″	0.40″	1979	25%	1.80″
Mar 29	0.04″	0.23″	2016	30%	1.84″
Mar 30	0.04″	1.08″	2017	32%	1.87″
Mar 31	0.04″	0.28″	1960	30%	1.91″
Apr 1	0.04″	0.53″	1946	44%	1.95″
Apr 2	0.04″	1.57″	1964	41%	1.99″
Apr 3	0.04″	0.37″	2023	33%	2.03″
Apr 4	0.04″	0.43″	1965	25%	2.07″
Apr 5	0.04″	0.85″	1941	23%	2.11″
Apr 6	0.04″	0.83″	2024	36%	2.15″
Apr 7	0.04″	0.42″	2013	29%	2.19″
Apr 8	0.04″	0.93″	1950	32%	2.23″
Apr 9	0.04″	0.53″	1943	37%	2.27″
Apr 10	0.04″	0.45″	1943	34%	2.32″
Apr 11	0.04″	0.31″	1945	43%	2.36″
Apr 12	0.05″	2.80″	1941	24%	2.41″
Apr 13	0.04″	0.40″	1998	33%	2.45″
Apr 14	0.04″	0.45″	2015	26%	2.49″
Apr 15	0.04″	0.67″	2013	31%	2.54″
Apr 16	0.04″	0.84″	1976	33%	2.58″
Apr 17	0.05″	0.70″	1971	34%	2.63″
Apr 18	0.05″	1.18″	1974	41%	2.68″
Apr 19	0.05″	1.82″	1974	39%	2.74″
Apr 20	0.05″	0.63″	1947	26%	2.79″
Apr 21	0.05″	0.36″	1947	30%	2.84″
Apr 22	0.05″	0.64″	2022	30%	2.90″
Apr 23	0.05″	0.63″	1948	33%	2.95″
Apr 24	0.05″	1.50″	2016	41%	3.00″
Apr 25	0.05″	0.84″	1964	39%	3.05″
Apr 26	0.05″	1.18″	2016	40%	3.10″
Apr 27	0.05″	0.73″	1941	31%	3.16″
Apr 28	0.05″	0.62″	1997	36%	3.21″
Apr 29	0.06″	0.92″	1973	38%	3.27″
Apr 30	0.06″	0.93″	1946	26%	3.33″
May 1	0.07″	0.93″	1979	32%	3.39″
May 2	0.06″	0.93″	1959	25%	3.46″
May 3	0.07″	1.39″	1971	36%	3.52″
May 4	0.07″	2.20″	2007	34%	3.59″
May 5	0.07″	0.43″	1975	32%	3.65″
May 6	0.07″	0.92″	2016	36%	3.72″
May 7	0.07″	1.66″	1995	46%	3.79″
May 8	0.07″	0.69″	1952	37%	3.85″
May 9	0.07″	0.66″	1947	34%	3.92″
May 10	0.08″	0.97″	1980	39%	3.99″
May 11	0.08″	1.26″	1989	26%	4.08″
May 12	0.08″	0.99″	1942	25%	4.15″
May 13	0.08″	0.74″	1957	34%	4.23″
May 14	0.08″	1.52″	1991	32%	4.31″
May 15	0.08″	0.80″	1991	47%	4.39″
May 16	0.08″	1.96″	1978	32%	4.46″
May 17	0.08″	2.22″	2000	34%	4.54″
May 18	0.07″	1.24″	2013	44%	4.62″
May 19	0.08″	0.81″	1975	37%	4.69″
May 20	0.08″	1.04″	1962	41%	4.77″
May 21	0.08″	0.51″	1992	37%	4.85″
May 22	0.08″	2.07″	1952	38%	4.93″
May 23	0.08″	0.76″	1976	37%	5.01″
May 24	0.08″	0.78″	1962	32%	5.09″
May 25	0.07″	0.96″	1997	34%	5.16″
May 26	0.07″	0.70″	2008	40%	5.23″
May 27	0.07″	0.90″	1975	37%	5.30″
May 28	0.07″	1.19″	1971	44%	5.36″
May 29	0.06″	1.15″	1971	31%	5.42″
May 30	0.06″	0.37″	1995	33%	5.48″
May 31	0.06″	0.69″	1991	26%	5.54″
Jun 1	0.06″	0.53″	1950	30%	5.60″
Jun 2	0.05″	1.04″	1993	26%	5.65″
Jun 3	0.05″	0.51″	2023	28%	5.70″
Jun 4	0.05″	0.35″	1945	28%	5.75″
Jun 5	0.05″	0.42″	2003	37%	5.80″
Jun 6	0.05″	0.70″	2007	39%	5.85″
Jun 7	0.05″	0.87″	1995	39%	5.90″
Jun 8	0.05″	1.06″	1986	36%	5.95″
Jun 9	0.06″	1.22″	1969	34%	6.01″
Jun 10	0.06″	0.70″	1970	36%	6.07″
Jun 11	0.06″	1.06″	1970	29%	6.13″
Jun 12	0.06″	1.26″	1983	22%	6.19″
Jun 13	0.06″	2.14″	1982	26%	6.24″
Jun 14	0.05″	0.60″	1967	30%	6.29″
Jun 15	0.05″	2.12″	2003	38%	6.34″
Jun 16	0.05″	1.25″	1998	32%	6.39″
Jun 17	0.05″	0.83″	1946	24%	6.44″
Jun 18	0.04″	2.15″	1986	22%	6.49″
Jun 19	0.04″	0.68″	1947	23%	6.53″
Jun 20	0.04″	0.33″	1947	21%	6.58″
Jun 21	0.04″	0.83″	1967	28%	6.62″
Jun 22	0.04″	0.95″	1989	26%	6.66″
Jun 23	0.04″	0.82″	1976	34%	6.69″
Jun 24	0.03″	1.09″	2021	17%	6.72″
Jun 25	0.03″	0.57″	1985	20%	6.76″
Jun 26	0.03″	0.52″	2014	25%	6.79″
Jun 27	0.03″	0.94″	1959	24%	6.82″
Jun 28	0.04″	0.55″	1947	21%	6.86″
Jun 29	0.04″	0.19″	2013	17%	6.90″
Jun 30	0.04″	0.65″	2009	23%	6.93″
Jul 1	0.04″	0.29″	1997	22%	6.97″
Jul 2	0.04″	1.61″	2009	28%	7.01″
Jul 3	0.04″	0.69″	2010	26%	7.05″
Jul 4	0.04″	0.62″	2021	14%	7.09″
Jul 5	0.04″	1.27″	1994	25%	7.12″
Jul 6	0.04″	0.55″	1990	24%	7.16″
Jul 7	0.04″	0.36″	1978	25%	7.21″
Jul 8	0.04″	0.78″	2006	25%	7.25″
Jul 9	0.04″	1.18″	1984	15%	7.29″
Jul 10	0.04″	0.88″	1951	21%	7.32″
Jul 11	0.04″	0.45″	1981	28%	7.36″
Jul 12	0.04″	0.63″	1994	21%	7.40″
Jul 13	0.03″	1.64″	2004	17%	7.42″
Jul 14	0.03″	0.86″	1953	30%	7.45″
Jul 15	0.03″	0.68″	1947	20%	7.48″
Jul 16	0.03″	0.28″	1967	20%	7.50″
Jul 17	0.03″	0.34″	1941	23%	7.54″
Jul 18	0.04″	1.22″	1973	26%	7.57″
Jul 19	0.04″	0.80″	1990	24%	7.61″
Jul 20	0.04″	1.33″	1951	19%	7.64″
Jul 21	0.04″	1.78″	1983	20%	7.68″
Jul 22	0.04″	1.14″	1977	31%	7.72″
Jul 23	0.03″	1.03″	1982	28%	7.75″
Jul 24	0.04″	1.62″	2007	30%	7.78″
Jul 25	0.04″	0.68″	1963	29%	7.82″
Jul 26	0.04″	1.32″	2007	29%	7.87″
Jul 27	0.04″	1.06″	1987	24%	7.91″
Jul 28	0.04″	1.10″	1998	33%	7.96″
Jul 29	0.04″	0.84″	1985	22%	8.00″
Jul 30	0.04″	0.33″	2023	20%	8.04″
Jul 31	0.04″	0.57″	1996	23%	8.08″
Aug 1	0.04″	2.21″	2007	16%	8.12″
Aug 2	0.03″	1.09″	2005	23%	8.15″
Aug 3	0.03″	0.84″	1990	29%	8.18″
Aug 4	0.03″	0.25″	1942	21%	8.22″
Aug 5	0.03″	0.55″	1989	16%	8.25″
Aug 6	0.03″	0.31″	1955	17%	8.28″
Aug 7	0.03″	0.29″	2023	12%	8.31″
Aug 8	0.03″	0.77″	1974	23%	8.34″
Aug 9	0.03″	1.17″	1941	22%	8.37″
Aug 10	0.02″	0.68″	2022	21%	8.39″
Aug 11	0.03″	0.57″	1966	23%	8.42″
Aug 12	0.03″	0.64″	1990	22%	8.44″
Aug 13	0.03″	0.15″	2009	15%	8.47″
Aug 14	0.03″	0.46″	2009	12%	8.50″
Aug 15	0.03″	0.38″	2000	10%	8.53″
Aug 16	0.02″	1.00″	2003	22%	8.55″
Aug 17	0.02″	0.57″	1960	23%	8.57″
Aug 18	0.03″	1.35″	1979	23%	8.60″
Aug 19	0.02″	0.24″	2016	28%	8.62″
Aug 20	0.02″	0.28″	1987	14%	8.65″
Aug 21	0.02″	0.28″	1957	16%	8.67″
Aug 22	0.02″	0.38″	1992	13%	8.69″
Aug 23	0.02″	0.80″	1972	12%	8.71″
Aug 24	0.02″	0.85″	1987	19%	8.73″
Aug 25	0.02″	0.59″	2006	22%	8.75″
Aug 26	0.02″	0.44″	2025	22%	8.77″
Aug 27	0.02″	0.18″	1964	12%	8.79″
Aug 28	0.02″	0.23″	1964	14%	8.81″
Aug 29	0.02″	0.43″	2003	15%	8.83″
Aug 30	0.02″	0.38″	2000	13%	8.85″
Aug 31	0.02″	0.62″	1973	15%	8.87″
Sep 1	0.02″	1.46″	1973	26%	8.89″
Sep 2	0.02″	0.86″	1943	16%	8.91″
Sep 3	0.02″	0.35″	1987	19%	8.93″
Sep 4	0.02″	0.45″	2016	16%	8.95″
Sep 5	0.02″	0.35″	1951	16%	8.97″
Sep 6	0.02″	0.68″	1946	15%	8.99″
Sep 7	0.02″	0.84″	1989	27%	9.02″
Sep 8	0.03″	0.33″	2022	13%	9.04″
Sep 9	0.03″	0.46″	1940	24%	9.07″
Sep 10	0.03″	0.63″	1973	30%	9.09″
Sep 11	0.03″	0.29″	1957	30%	9.12″
Sep 12	0.03″	0.95″	1982	23%	9.15″
Sep 13	0.03″	0.52″	1982	24%	9.19″
Sep 14	0.04″	0.47″	2017	23%	9.22″
Sep 15	0.04″	1.24″	2025	17%	9.26″
Sep 16	0.04″	0.82″	2025	26%	9.29″
Sep 17	0.04″	0.57″	1946	27%	9.33″
Sep 18	0.04″	0.43″	1997	23%	9.37″
Sep 19	0.04″	2.01″	1989	30%	9.41″
Sep 20	0.04″	1.09″	1962	30%	9.45″
Sep 21	0.04″	0.44″	1985	28%	9.48″
Sep 22	0.04″	0.60″	1976	22%	9.52″
Sep 23	0.04″	0.62″	1986	19%	9.56″
Sep 24	0.04″	0.27″	2016	19%	9.60″
Sep 25	0.04″	0.29″	2013	14%	9.65″
Sep 26	0.05″	0.58″	2013	19%	9.69″
Sep 27	0.04″	0.34″	2019	16%	9.74″
Sep 28	0.04″	0.50″	1995	21%	9.78″
Sep 29	0.04″	0.66″	1982	17%	9.83″
Sep 30	0.05″	0.71″	1950	29%	9.87″
Oct 1	0.05″	1.54″	1986	23%	9.92″
Oct 2	0.05″	1.54″	2013	26%	9.96″
Oct 3	0.05″	0.86″	1998	29%	10.01″
Oct 4	0.05″	0.59″	1962	24%	10.06″
Oct 5	0.05″	1.90″	1962	26%	10.10″
Oct 6	0.04″	0.65″	1949	21%	10.15″
Oct 7	0.05″	0.49″	2017	20%	10.19″
Oct 8	0.05″	0.51″	2005	22%	10.24″
Oct 9	0.05″	0.30″	2008	16%	10.29″
Oct 10	0.04″	0.45″	1943	23%	10.34″
Oct 11	0.04″	1.34″	2023	27%	10.38″
Oct 12	0.04″	0.56″	1966	21%	10.41″
Oct 13	0.04″	0.53″	1957	19%	10.45″
Oct 14	0.04″	1.28″	1994	20%	10.49″
Oct 15	0.03″	2.06″	1998	21%	10.52″
Oct 16	0.03″	0.53″	1996	24%	10.55″
Oct 17	0.03″	0.35″	1971	27%	10.58″
Oct 18	0.03″	1.21″	2021	17%	10.61″
Oct 19	0.03″	0.48″	1949	20%	10.64″
Oct 20	0.03″	0.25″	1996	17%	10.68″
Oct 21	0.03″	0.69″	1986	21%	10.71″
Oct 22	0.03″	0.25″	1975	26%	10.74″
Oct 23	0.03″	0.28″	1957	15%	10.77″
Oct 24	0.03″	0.46″	2006	19%	10.80″
Oct 25	0.03″	0.59″	1989	21%	10.83″
Oct 26	0.03″	0.50″	1975	16%	10.86″
Oct 27	0.03″	0.99″	1998	23%	10.88″
Oct 28	0.03″	0.30″	1989	29%	10.91″
Oct 29	0.03″	0.85″	2024	31%	10.94″
Oct 30	0.03″	0.28″	1966	22%	10.96″
Oct 31	0.03″	0.50″	2011	26%	10.99″
Nov 1	0.02″	0.99″	1994	17%	11.01″
Nov 2	0.02″	0.32″	2022	19%	11.03″
Nov 3	0.02″	0.44″	1956	24%	11.06″
Nov 4	0.02″	0.20″	1960	15%	11.08″
Nov 5	0.02″	0.63″	1986	20%	11.10″
Nov 6	0.02″	0.73″	1983	27%	11.13″
Nov 7	0.02″	0.58″	1983	23%	11.15″
Nov 8	0.02″	0.33″	1947	22%	11.17″
Nov 9	0.02″	0.35″	2014	22%	11.19″
Nov 10	0.02″	0.28″	2012	24%	11.21″
Nov 11	0.02″	0.24″	1993	22%	11.23″
Nov 12	0.02″	0.46″	1985	19%	11.25″
Nov 13	0.02″	0.40″	2006	26%	11.26″
Nov 14	0.02″	0.19″	1956	20%	11.28″
Nov 15	0.02″	0.35″	1958	24%	11.30″
Nov 16	0.02″	0.22″	2018	17%	11.32″
Nov 17	0.02″	0.68″	1981	27%	11.34″
Nov 18	0.02″	0.39″	1977	19%	11.36″
Nov 19	0.02″	0.52″	1979	17%	11.39″
Nov 20	0.02″	0.53″	1983	19%	11.41″
Nov 21	0.02″	0.34″	1955	21%	11.42″
Nov 22	0.02″	0.29″	1967	24%	11.45″
Nov 23	0.02″	0.50″	1942	23%	11.47″
Nov 24	0.02″	0.33″	2019	29%	11.49″
Nov 25	0.02″	0.33″	1984	34%	11.51″
Nov 26	0.02″	0.49″	2004	28%	11.53″
Nov 27	0.02″	0.24″	1975	20%	11.55″
Nov 28	0.02″	0.19″	2019	19%	11.57″
Nov 29	0.02″	0.73″	2019	16%	11.59″
Nov 30	0.02″	1.24″	1982	17%	11.61″
Dec 1	0.02″	0.42″	1955	25%	11.63″
Dec 2	0.02″	0.30″	2013	22%	11.65″
Dec 3	0.02″	0.25″	2017	24%	11.66″
Dec 4	0.01″	0.24″	1978	24%	11.68″
Dec 5	0.02″	0.39″	2016	23%	11.70″
Dec 6	0.02″	0.38″	1953	28%	11.71″
Dec 7	0.02″	0.49″	1985	28%	11.73″
Dec 8	0.02″	0.33″	1985	21%	11.75″
Dec 9	0.02″	0.23″	1970	20%	11.77″
Dec 10	0.02″	0.09″	1965	15%	11.78″
Dec 11	0.02″	0.15″	1984	23%	11.80″
Dec 12	0.02″	0.37″	2022	21%	11.82″
Dec 13	0.02″	0.56″	2015	18%	11.84″
Dec 14	0.02″	0.52″	2010	20%	11.86″
Dec 15	0.02″	0.29″	1992	16%	11.88″
Dec 16	0.02″	0.45″	1970	21%	11.90″
Dec 17	0.02″	0.37″	1968	17%	11.92″
Dec 18	0.02″	0.50″	2013	21%	11.95″
Dec 19	0.02″	0.14″	2017	20%	11.97″
Dec 20	0.02″	0.35″	2017	23%	11.99″
Dec 21	0.02″	0.23″	1941	25%	12.02″
Dec 22	0.02″	0.38″	1982	29%	12.04″
Dec 23	0.02″	1.26″	1982	28%	12.06″
Dec 24	0.02″	0.22″	2009	25%	12.08″
Dec 25	0.02″	0.39″	2016	28%	12.10″
Dec 26	0.02″	0.23″	1960	26%	12.12″
Dec 27	0.02″	0.16″	1955	20%	12.14″
Dec 28	0.02″	0.10″	1989	16%	12.16″
Dec 29	0.02″	0.45″	2010	26%	12.18″
Dec 30	0.02″	0.38″	2011	31%	12.20″
Dec 31	0.02″	0.24″	1984	32%	12.22″

Records & forecast → Casper station Every Day of the Year → national almanac

Data: NOAA/NWS ThreadEx (RCC-ACIS) · normals 1991–2020 (or full record) · part of Weather Trader