Helena, MT

46.604°N, 111.989°W · station HLNthr · 1880–2026 · 147 years · normal 11.3 in/yr

The Accumulation Ribbon

Every day of the year at Helena: how the rain adds up. The filled curve is the normal running total; the dashed lines are the wettest (1975) and driest (1973) years on record; the white line is 2026 so far.

Normal to date Wettest / driest year 2026 so far normal annual 11.3 in

All-Time Extremes

Wettest day ever

2.23in

Oct 12, 1891

Wettest month ever

6.67in

May 1927

Wettest year

20.9in

1975 · mean 11.9 in

Driest year

6.3in

1973 · mean 11.9 in

Longest dry streak

61 days

< 0.01 in · ended 2017-09-08

Longest wet streak

20 days

≥ 0.01 in · ended 1891-06-15

Records by Month

Month	Wettest day	Normal	Wettest month
Jan	1.13″ Jan 12, 1881	0.51″	3.75″ 1884
Feb	0.82″ Feb 2, 1895	0.41″	2.30″ 2019
Mar	0.78″ Mar 20, 1898	0.63″	2.39″ 1898
Apr	1.09″ Apr 24, 1900	0.80″	3.00″ 1975
May	2.06″ May 3, 1964	1.71″	6.67″ 1927
Jun	2.16″ Jun 11, 1915	1.95″	5.63″ 1892
Jul	1.36″ Jul 30, 1975	0.87″	4.70″ 1993
Aug	1.89″ Aug 20, 1933	0.71″	4.23″ 1974
Sep	2.10″ Sep 18, 1882	0.89″	3.66″ 1882
Oct	2.23″ Oct 12, 1891	0.58″	2.78″ 1925
Nov	1.30″ Nov 25, 1896	0.47″	3.29″ 1896
Dec	1.00″ Dec 25, 1880	0.47″	4.64″ 1880

Record Daily Rainfall

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

Year by Year

Wettest years

1975	20.94 in
1908	19.63 in
1891	19.39 in
1884	19.18 in
1916	18.87 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	0.01″	0.36″	1910	25%	0.02″
Jan 2	0.01″	1.06″	1884	23%	0.03″
Jan 3	0.02″	1.03″	1884	26%	0.05″
Jan 4	0.02″	0.71″	1884	29%	0.06″
Jan 5	0.01″	0.40″	1980	28%	0.08″
Jan 6	0.01″	0.33″	1932	27%	0.09″
Jan 7	0.01″	0.39″	1909	27%	0.10″
Jan 8	0.01″	0.38″	1909	23%	0.11″
Jan 9	0.01″	0.57″	1971	25%	0.12″
Jan 10	0.01″	0.31″	2013	30%	0.13″
Jan 11	0.01″	0.27″	1917	25%	0.15″
Jan 12	0.01″	1.13″	1881	23%	0.16″
Jan 13	0.01″	0.62″	1928	22%	0.17″
Jan 14	0.01″	0.42″	1881	28%	0.19″
Jan 15	0.01″	0.34″	1954	31%	0.20″
Jan 16	0.01″	0.24″	1954	26%	0.22″
Jan 17	0.01″	0.51″	1885	32%	0.23″
Jan 18	0.01″	0.71″	2012	26%	0.25″
Jan 19	0.01″	0.50″	1906	32%	0.26″
Jan 20	0.01″	0.40″	1969	23%	0.27″
Jan 21	0.01″	0.52″	1969	25%	0.29″
Jan 22	0.01″	0.37″	1989	27%	0.30″
Jan 23	0.01″	0.22″	1895	27%	0.31″
Jan 24	0.01″	0.32″	1881	29%	0.33″
Jan 25	0.01″	0.40″	1975	23%	0.34″
Jan 26	0.01″	0.60″	1893	23%	0.35″
Jan 27	0.01″	0.62″	1893	25%	0.36″
Jan 28	0.01″	0.47″	1899	26%	0.37″
Jan 29	0.01″	0.39″	1887	25%	0.38″
Jan 30	0.01″	0.34″	1899	25%	0.39″
Jan 31	0.01″	0.52″	1911	29%	0.40″
Feb 1	0.01″	0.17″	1963	23%	0.41″
Feb 2	0.01″	0.82″	1895	21%	0.43″
Feb 3	0.01″	0.49″	2019	16%	0.44″
Feb 4	0.01″	0.48″	1967	24%	0.46″
Feb 5	0.01″	0.36″	1933	30%	0.47″
Feb 6	0.01″	0.41″	1895	29%	0.49″
Feb 7	0.02″	0.58″	2024	28%	0.50″
Feb 8	0.02″	0.23″	1985	27%	0.52″
Feb 9	0.02″	0.57″	2026	33%	0.53″
Feb 10	0.02″	0.38″	1899	28%	0.55″
Feb 11	0.01″	0.42″	1900	25%	0.57″
Feb 12	0.01″	0.32″	1897	24%	0.58″
Feb 13	0.01″	0.28″	1958	32%	0.60″
Feb 14	0.01″	0.68″	1910	28%	0.61″
Feb 15	0.01″	0.30″	1986	23%	0.63″
Feb 16	0.02″	0.39″	1929	27%	0.64″
Feb 17	0.01″	0.30″	1890	22%	0.66″
Feb 18	0.02″	0.31″	1993	24%	0.67″
Feb 19	0.02″	0.22″	1949	23%	0.69″
Feb 20	0.02″	0.20″	2011	29%	0.71″
Feb 21	0.02″	0.49″	1914	29%	0.72″
Feb 22	0.02″	0.30″	1889	25%	0.74″
Feb 23	0.02″	0.41″	2014	27%	0.75″
Feb 24	0.02″	0.63″	1917	29%	0.77″
Feb 25	0.02″	0.49″	1917	27%	0.79″
Feb 26	0.02″	0.31″	1891	21%	0.81″
Feb 27	0.02″	0.41″	1970	23%	0.82″
Feb 28	0.02″	0.51″	1953	25%	0.84″
Feb 29	0.02″	0.60″	1891	29%	0.86″
Mar 1	0.02″	0.30″	1891	25%	0.87″
Mar 2	0.02″	0.35″	1932	26%	0.89″
Mar 3	0.01″	0.58″	1901	32%	0.90″
Mar 4	0.01″	0.73″	1897	27%	0.92″
Mar 5	0.01″	0.73″	1932	25%	0.93″
Mar 6	0.01″	0.36″	2003	23%	0.95″
Mar 7	0.01″	0.48″	1898	24%	0.96″
Mar 8	0.02″	0.34″	1958	26%	0.98″
Mar 9	0.02″	0.40″	1921	27%	0.99″
Mar 10	0.02″	0.69″	1929	21%	1.01″
Mar 11	0.02″	0.39″	2005	28%	1.03″
Mar 12	0.02″	0.34″	2026	32%	1.04″
Mar 13	0.02″	0.50″	1896	29%	1.06″
Mar 14	0.02″	0.38″	2018	21%	1.08″
Mar 15	0.02″	0.37″	1922	34%	1.10″
Mar 16	0.02″	0.35″	1989	25%	1.11″
Mar 17	0.02″	0.42″	1968	23%	1.13″
Mar 18	0.02″	0.46″	1987	23%	1.15″
Mar 19	0.02″	0.78″	1898	22%	1.17″
Mar 20	0.02″	0.20″	1891	25%	1.19″
Mar 21	0.02″	0.33″	1964	19%	1.21″
Mar 22	0.02″	0.70″	1920	21%	1.23″
Mar 23	0.02″	0.40″	2024	26%	1.24″
Mar 24	0.02″	0.37″	1961	30%	1.26″
Mar 25	0.02″	0.56″	1952	30%	1.28″
Mar 26	0.02″	0.56″	1979	25%	1.30″
Mar 27	0.02″	0.47″	1982	29%	1.32″
Mar 28	0.02″	0.52″	1888	34%	1.35″
Mar 29	0.03″	0.58″	1890	29%	1.37″
Mar 30	0.03″	0.52″	1957	24%	1.40″
Mar 31	0.03″	0.50″	1957	27%	1.42″
Apr 1	0.03″	0.59″	2004	35%	1.45″
Apr 2	0.03″	0.64″	1968	29%	1.48″
Apr 3	0.03″	0.52″	1880	29%	1.51″
Apr 4	0.03″	0.75″	2006	31%	1.54″
Apr 5	0.03″	0.94″	2006	29%	1.57″
Apr 6	0.03″	0.59″	1962	25%	1.60″
Apr 7	0.04″	0.45″	1922	25%	1.64″
Apr 8	0.04″	0.41″	2004	21%	1.67″
Apr 9	0.03″	0.47″	1903	24%	1.70″
Apr 10	0.04″	0.71″	1941	25%	1.74″
Apr 11	0.04″	0.51″	1916	23%	1.77″
Apr 12	0.04″	0.77″	1886	25%	1.81″
Apr 13	0.03″	0.72″	1880	27%	1.84″
Apr 14	0.04″	0.58″	1896	22%	1.88″
Apr 15	0.04″	0.48″	2006	27%	1.91″
Apr 16	0.03″	0.56″	1885	31%	1.95″
Apr 17	0.04″	0.64″	2003	22%	1.98″
Apr 18	0.03″	0.34″	1967	26%	2.02″
Apr 19	0.03″	0.98″	1984	22%	2.05″
Apr 20	0.03″	0.73″	1886	29%	2.08″
Apr 21	0.03″	0.87″	1886	35%	2.11″
Apr 22	0.03″	0.93″	1925	32%	2.15″
Apr 23	0.03″	1.09″	1900	31%	2.18″
Apr 24	0.03″	0.98″	1975	32%	2.21″
Apr 25	0.03″	1.01″	1901	35%	2.24″
Apr 26	0.03″	0.51″	1999	33%	2.27″
Apr 27	0.03″	0.62″	1967	29%	2.30″
Apr 28	0.03″	0.46″	1933	33%	2.34″
Apr 29	0.03″	0.95″	1951	28%	2.37″
Apr 30	0.03″	0.88″	1964	24%	2.39″
May 1	0.03″	1.14″	1912	29%	2.43″
May 2	0.03″	0.92″	1901	33%	2.46″
May 3	0.04″	2.06″	1964	33%	2.50″
May 4	0.04″	0.60″	1888	31%	2.53″
May 5	0.04″	0.75″	1958	29%	2.57″
May 6	0.04″	0.75″	1896	33%	2.61″
May 7	0.04″	0.83″	1891	32%	2.64″
May 8	0.04″	1.12″	1905	37%	2.68″
May 9	0.05″	1.45″	1914	30%	2.73″
May 10	0.04″	0.88″	1995	30%	2.77″
May 11	0.04″	2.00″	1900	34%	2.82″
May 12	0.05″	1.51″	1898	35%	2.87″
May 13	0.05″	1.07″	1977	27%	2.92″
May 14	0.06″	0.83″	1909	33%	2.98″
May 15	0.06″	0.86″	2015	41%	3.04″
May 16	0.07″	0.84″	2017	42%	3.11″
May 17	0.07″	0.67″	1901	33%	3.18″
May 18	0.07″	1.10″	1944	41%	3.25″
May 19	0.07″	1.78″	1957	44%	3.32″
May 20	0.08″	1.93″	1981	38%	3.40″
May 21	0.08″	0.96″	2002	38%	3.48″
May 22	0.09″	0.67″	2008	34%	3.57″
May 23	0.09″	1.56″	1953	38%	3.65″
May 24	0.08″	0.98″	1916	38%	3.74″
May 25	0.09″	1.19″	1980	37%	3.82″
May 26	0.09″	1.16″	2006	46%	3.91″
May 27	0.09″	1.10″	1927	45%	4.00″
May 28	0.09″	1.51″	1927	43%	4.08″
May 29	0.08″	0.97″	2026	39%	4.17″
May 30	0.09″	0.95″	2018	41%	4.25″
May 31	0.08″	1.46″	2005	37%	4.34″
Jun 1	0.09″	1.20″	1943	45%	4.42″
Jun 2	0.09″	1.39″	1915	45%	4.51″
Jun 3	0.09″	0.75″	1948	42%	4.60″
Jun 4	0.09″	1.73″	1908	37%	4.69″
Jun 5	0.09″	1.94″	1908	39%	4.78″
Jun 6	0.08″	1.14″	2011	48%	4.86″
Jun 7	0.09″	1.19″	1909	45%	4.95″
Jun 8	0.09″	1.55″	1947	39%	5.04″
Jun 9	0.09″	1.04″	2002	44%	5.13″
Jun 10	0.09″	2.16″	1915	43%	5.22″
Jun 11	0.09″	1.40″	1892	46%	5.31″
Jun 12	0.09″	1.16″	1962	46%	5.41″
Jun 13	0.09″	0.82″	1922	41%	5.50″
Jun 14	0.08″	0.87″	1881	34%	5.58″
Jun 15	0.08″	1.15″	2010	44%	5.66″
Jun 16	0.07″	0.67″	1944	36%	5.73″
Jun 17	0.07″	1.77″	1979	33%	5.80″
Jun 18	0.07″	1.08″	1975	34%	5.86″
Jun 19	0.06″	0.65″	1964	34%	5.92″
Jun 20	0.06″	0.76″	1881	35%	5.98″
Jun 21	0.06″	1.30″	1907	32%	6.04″
Jun 22	0.06″	1.82″	1907	34%	6.10″
Jun 23	0.05″	0.82″	1969	31%	6.15″
Jun 24	0.04″	1.08″	1965	32%	6.19″
Jun 25	0.04″	0.62″	1905	35%	6.24″
Jun 26	0.04″	1.01″	1970	37%	6.28″
Jun 27	0.04″	1.55″	1982	36%	6.32″
Jun 28	0.04″	0.94″	1909	33%	6.36″
Jun 29	0.04″	1.14″	1898	27%	6.40″
Jun 30	0.04″	1.28″	1898	32%	6.44″
Jul 1	0.04″	0.56″	1948	24%	6.48″
Jul 2	0.04″	1.09″	2022	34%	6.52″
Jul 3	0.04″	0.74″	1986	27%	6.56″
Jul 4	0.04″	0.62″	1938	29%	6.60″
Jul 5	0.04″	0.80″	1969	33%	6.63″
Jul 6	0.04″	0.70″	1969	29%	6.67″
Jul 7	0.04″	1.11″	1926	25%	6.71″
Jul 8	0.04″	1.35″	1983	24%	6.75″
Jul 9	0.04″	0.98″	1955	30%	6.79″
Jul 10	0.04″	0.47″	2016	26%	6.82″
Jul 11	0.04″	0.74″	1891	29%	6.86″
Jul 12	0.03″	0.45″	1981	28%	6.89″
Jul 13	0.03″	0.87″	1918	23%	6.92″
Jul 14	0.03″	0.90″	1918	29%	6.95″
Jul 15	0.03″	0.53″	1940	25%	6.98″
Jul 16	0.03″	0.82″	1987	31%	7.01″
Jul 17	0.03″	0.82″	1916	17%	7.05″
Jul 18	0.03″	0.40″	1928	21%	7.08″
Jul 19	0.03″	0.97″	1881	21%	7.11″
Jul 20	0.03″	0.32″	1899	21%	7.15″
Jul 21	0.03″	0.63″	1897	16%	7.18″
Jul 22	0.03″	0.80″	1884	18%	7.21″
Jul 23	0.03″	0.56″	1941	19%	7.24″
Jul 24	0.03″	0.73″	1993	27%	7.27″
Jul 25	0.03″	0.54″	1908	23%	7.30″
Jul 26	0.03″	1.12″	2009	20%	7.33″
Jul 27	0.03″	1.23″	1998	23%	7.37″
Jul 28	0.04″	0.27″	1880	16%	7.40″
Jul 29	0.04″	1.36″	1975	21%	7.44″
Jul 30	0.04″	0.46″	1931	25%	7.47″
Jul 31	0.04″	0.88″	2013	24%	7.51″
Aug 1	0.03″	0.75″	1943	22%	7.54″
Aug 2	0.04″	1.06″	2004	24%	7.58″
Aug 3	0.04″	0.41″	2001	26%	7.61″
Aug 4	0.03″	0.79″	1968	19%	7.65″
Aug 5	0.04″	0.43″	2009	20%	7.69″
Aug 6	0.04″	0.67″	1975	26%	7.72″
Aug 7	0.04″	0.64″	1974	19%	7.76″
Aug 8	0.04″	0.68″	1916	18%	7.79″
Aug 9	0.04″	0.88″	2010	25%	7.83″
Aug 10	0.03″	0.99″	2019	24%	7.86″
Aug 11	0.03″	0.71″	1965	21%	7.89″
Aug 12	0.03″	0.46″	2010	19%	7.93″
Aug 13	0.03″	0.84″	1927	19%	7.96″
Aug 14	0.03″	0.43″	1972	21%	7.99″
Aug 15	0.04″	0.85″	2025	21%	8.03″
Aug 16	0.04″	0.79″	1932	17%	8.07″
Aug 17	0.04″	0.35″	1926	14%	8.11″
Aug 18	0.03″	0.79″	1912	23%	8.14″
Aug 19	0.03″	1.89″	1933	27%	8.17″
Aug 20	0.03″	1.82″	1983	26%	8.21″
Aug 21	0.03″	0.76″	1962	24%	8.24″
Aug 22	0.03″	1.16″	2014	26%	8.27″
Aug 23	0.03″	0.86″	1976	21%	8.30″
Aug 24	0.03″	0.52″	1880	20%	8.33″
Aug 25	0.03″	0.34″	1954	23%	8.36″
Aug 26	0.03″	0.64″	1925	19%	8.39″
Aug 27	0.03″	0.55″	2025	15%	8.42″
Aug 28	0.03″	0.91″	1910	20%	8.45″
Aug 29	0.03″	1.13″	1881	24%	8.48″
Aug 30	0.03″	1.06″	1986	20%	8.51″
Aug 31	0.03″	0.76″	1984	21%	8.55″
Sep 1	0.03″	0.58″	1881	19%	8.58″
Sep 2	0.03″	1.59″	1901	25%	8.61″
Sep 3	0.03″	1.04″	1881	21%	8.65″
Sep 4	0.03″	1.02″	1886	27%	8.68″
Sep 5	0.03″	0.80″	1894	23%	8.71″
Sep 6	0.03″	0.80″	1926	23%	8.75″
Sep 7	0.04″	1.11″	2019	31%	8.78″
Sep 8	0.04″	0.77″	1921	22%	8.82″
Sep 9	0.04″	0.70″	1909	23%	8.86″
Sep 10	0.04″	0.90″	1991	25%	8.90″
Sep 11	0.04″	1.61″	1980	23%	8.94″
Sep 12	0.04″	0.75″	1982	28%	8.98″
Sep 13	0.04″	1.05″	1906	27%	9.02″
Sep 14	0.04″	1.02″	2017	29%	9.06″
Sep 15	0.03″	1.30″	1947	23%	9.09″
Sep 16	0.03″	0.79″	1989	21%	9.12″
Sep 17	0.03″	2.10″	1882	24%	9.16″
Sep 18	0.03″	1.08″	1976	22%	9.19″
Sep 19	0.03″	1.00″	1941	23%	9.22″
Sep 20	0.03″	1.30″	1937	23%	9.25″
Sep 21	0.03″	1.26″	2023	22%	9.28″
Sep 22	0.03″	0.56″	2007	22%	9.31″
Sep 23	0.03″	0.63″	2013	20%	9.34″
Sep 24	0.03″	1.20″	1920	14%	9.36″
Sep 25	0.03″	0.62″	1947	22%	9.39″
Sep 26	0.03″	0.85″	1982	21%	9.42″
Sep 27	0.03″	0.26″	1929	19%	9.44″
Sep 28	0.03″	0.65″	1940	19%	9.47″
Sep 29	0.03″	1.63″	1893	20%	9.50″
Sep 30	0.03″	0.67″	2022	21%	9.53″
Oct 1	0.03″	0.69″	1911	28%	9.55″
Oct 2	0.03″	1.04″	1908	26%	9.58″
Oct 3	0.03″	0.40″	1916	23%	9.61″
Oct 4	0.03″	0.89″	1912	23%	9.63″
Oct 5	0.03″	0.55″	1925	23%	9.66″
Oct 6	0.03″	0.45″	1923	19%	9.69″
Oct 7	0.03″	0.44″	1886	18%	9.72″
Oct 8	0.03″	0.36″	1938	21%	9.75″
Oct 9	0.03″	0.81″	1911	19%	9.78″
Oct 10	0.03″	1.25″	1881	22%	9.80″
Oct 11	0.03″	2.23″	1891	18%	9.83″
Oct 12	0.03″	1.16″	1920	18%	9.86″
Oct 13	0.03″	0.57″	1962	19%	9.89″
Oct 14	0.02″	0.92″	1938	23%	9.91″
Oct 15	0.02″	0.36″	1980	26%	9.93″
Oct 16	0.02″	0.39″	1908	25%	9.95″
Oct 17	0.02″	0.63″	2020	16%	9.98″
Oct 18	0.02″	0.59″	2009	22%	10.00″
Oct 19	0.02″	0.24″	1971	11%	10.03″
Oct 20	0.02″	0.63″	1975	18%	10.05″
Oct 21	0.02″	0.60″	2022	21%	10.07″
Oct 22	0.02″	0.80″	1954	20%	10.09″
Oct 23	0.02″	0.60″	2020	20%	10.11″
Oct 24	0.02″	0.56″	2023	16%	10.14″
Oct 25	0.02″	0.44″	1925	12%	10.16″
Oct 26	0.02″	0.35″	1956	25%	10.18″
Oct 27	0.02″	0.27″	1956	20%	10.20″
Oct 28	0.02″	0.65″	1880	14%	10.22″
Oct 29	0.02″	0.49″	1992	15%	10.24″
Oct 30	0.02″	0.52″	2016	21%	10.26″
Oct 31	0.02″	0.49″	2017	23%	10.28″
Nov 1	0.02″	0.29″	2005	21%	10.30″
Nov 2	0.02″	0.38″	2015	26%	10.33″
Nov 3	0.02″	0.67″	1927	22%	10.35″
Nov 4	0.02″	0.65″	1968	22%	10.37″
Nov 5	0.02″	0.56″	1896	21%	10.39″
Nov 6	0.02″	0.48″	1950	20%	10.41″
Nov 7	0.02″	0.31″	2010	21%	10.42″
Nov 8	0.02″	0.85″	2012	23%	10.44″
Nov 9	0.02″	0.54″	1919	26%	10.45″
Nov 10	0.01″	0.66″	1947	21%	10.47″
Nov 11	0.02″	0.25″	1910	22%	10.48″
Nov 12	0.02″	0.36″	1930	19%	10.50″
Nov 13	0.02″	0.48″	1903	19%	10.52″
Nov 14	0.02″	0.36″	1891	20%	10.54″
Nov 15	0.02″	0.53″	1952	25%	10.56″
Nov 16	0.02″	0.35″	1985	20%	10.57″
Nov 17	0.02″	0.31″	1978	17%	10.59″
Nov 18	0.02″	0.48″	1978	21%	10.61″
Nov 19	0.02″	0.47″	1946	26%	10.63″
Nov 20	0.02″	0.52″	1921	23%	10.65″
Nov 21	0.02″	0.39″	1998	27%	10.67″
Nov 22	0.02″	0.28″	2002	25%	10.69″
Nov 23	0.02″	0.60″	1897	28%	10.71″
Nov 24	0.02″	1.23″	1892	23%	10.73″
Nov 25	0.02″	1.30″	1896	21%	10.76″
Nov 26	0.02″	0.55″	1991	22%	10.78″
Nov 27	0.02″	0.32″	1957	23%	10.80″
Nov 28	0.02″	0.30″	1942	17%	10.82″
Nov 29	0.02″	0.45″	1893	21%	10.83″
Nov 30	0.02″	0.62″	1917	25%	10.85″
Dec 1	0.02″	0.63″	1921	23%	10.87″
Dec 2	0.01″	0.70″	1880	18%	10.88″
Dec 3	0.01″	0.34″	1948	23%	10.89″
Dec 4	0.01″	0.35″	1986	24%	10.91″
Dec 5	0.01″	0.81″	1901	30%	10.92″
Dec 6	0.01″	0.51″	1929	28%	10.93″
Dec 7	0.01″	0.52″	1906	21%	10.95″
Dec 8	0.01″	0.49″	1917	15%	10.96″
Dec 9	0.01″	0.51″	1929	18%	10.97″
Dec 10	0.01″	0.78″	1917	31%	10.98″
Dec 11	0.01″	0.60″	1937	20%	10.99″
Dec 12	0.01″	0.48″	1917	25%	11.00″
Dec 13	0.01″	0.25″	2015	23%	11.02″
Dec 14	0.01″	0.39″	1979	22%	11.03″
Dec 15	0.01″	0.45″	2016	23%	11.04″
Dec 16	0.01″	0.23″	2025	27%	11.05″
Dec 17	0.01″	0.32″	1883	21%	11.07″
Dec 18	0.01″	0.77″	1925	21%	11.08″
Dec 19	0.01″	0.28″	2017	26%	11.10″
Dec 20	0.01″	0.35″	1937	27%	11.11″
Dec 21	0.01″	0.25″	1915	25%	11.12″
Dec 22	0.02″	0.40″	1982	29%	11.14″
Dec 23	0.01″	0.48″	1888	23%	11.15″
Dec 24	0.02″	0.43″	1971	25%	11.17″
Dec 25	0.02″	1.00″	1880	26%	11.19″
Dec 26	0.02″	1.00″	1880	28%	11.20″
Dec 27	0.02″	0.48″	1880	29%	11.22″
Dec 28	0.02″	0.64″	2017	28%	11.24″
Dec 29	0.02″	0.24″	1919	30%	11.25″
Dec 30	0.02″	0.15″	2004	28%	11.27″
Dec 31	0.02″	0.13″	1908	33%	11.29″

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

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