Montrose Threshold Days by Year

4 fixed thresholds counted per year at Montrose (ASN00086076): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Montrose Thresholds

Montrose: days with 10 mm (0.39 in) or more of precipitation in 66 years, most in 1952 with 52.
Montrose: days with 25 mm (0.98 in) or more of precipitation in 66 years, most in 1924 with 17.
Montrose: days with 50 mm (1.97 in) or more of precipitation in 30 years, most in 1934 with 3.
Montrose: days with 100 mm (3.94 in) or more of precipitation in 5 years, most in 1934 with 1.
4 fixed thresholds have at least one qualifying day at Montrose.

Days with 10 mm (0.39 in) or more of precipitation

66 years with a qualifying day

Days per year at Montrose with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 52 in 1952.

Days with 10 mm (0.39 in) or more of precipitation per year at Montrose
Year	Days	Decade average
1918	32	28.5
1919	25	28.5
1920	35	33.3
1921	31	33.3
1922	37	33.3
1923	32	33.3
1924	43	33.3
1925	21	33.3
1926	32	33.3
1928	35	33.3
1933	30	31.6
1934	38	31.6
1935	37	31.6
1936	30	31.6
1937	24	31.6
1938	23	31.6
1939	39	31.6
1940	29	30.5
1941	34	30.5
1942	31	30.5
1943	29	30.5
1944	32	30.5
1945	21	30.5
1946	35	30.5
1949	33	30.5
1950	27	38.4
1951	36	38.4
1952	52	38.4
1953	40	38.4
1954	33	38.4
1955	46	38.4
1956	35	38.4
1966	28	27
1967	23	27
1968	25	27
1969	32	27
1970	39	31.5
1972	24	31.5
1982	16	16
1999	30	30
2000	34	28.7
2001	37	28.7
2002	24	28.7
2003	31	28.7
2004	40	28.7
2005	25	28.7
2006	24	28.7
2007	21	28.7
2008	24	28.7
2009	27	28.7
2010	39	31.3
2011	45	31.3
2012	32	31.3
2013	30	31.3
2014	28	31.3
2015	25	31.3
2016	37	31.3
2017	24	31.3
2018	24	31.3
2019	29	31.3
2020	37	31.2
2021	32	31.2
2022	45	31.2
2023	28	31.2
2025	25	31.2
2026	20	31.2

For each year, a bar from the first to the last day at Montrose meeting 10 mm (0.39 in).

First to last qualifying date each year at Montrose
Year	First date	Last date
1918	1918-01-13	1918-12-26
1919	1919-01-07	1919-12-28
1920	1920-01-27	1920-12-17
1921	1921-01-02	1921-12-23
1922	1922-01-08	1922-12-29
1923	1923-01-19	1923-12-26
1924	1924-01-10	1924-12-27
1925	1925-01-13	1925-12-24
1926	1926-01-07	1926-12-29
1928	1928-01-18	1928-11-24
1933	1933-01-26	1933-12-15
1934	1934-01-06	1934-12-01
1935	1935-01-05	1935-12-20
1936	1936-01-04	1936-12-21
1937	1937-01-03	1937-12-02
1938	1938-01-14	1938-11-28
1939	1939-02-03	1939-12-01
1940	1940-01-06	1940-12-28
1941	1941-01-04	1941-12-07
1942	1942-01-20	1942-12-19
1943	1943-01-03	1943-12-03
1944	1944-01-24	1944-12-22
1945	1945-01-02	1945-12-26
1946	1946-01-16	1946-12-29
1949	1949-01-17	1949-12-21
1950	1950-02-02	1950-12-30
1951	1951-01-05	1951-12-20
1952	1952-01-05	1952-12-12
1953	1953-01-06	1953-12-07
1954	1954-01-28	1954-12-12
1955	1955-01-29	1955-12-30
1956	1956-01-02	1956-12-27
1966	1966-01-13	1966-12-16
1967	1967-01-13	1967-12-30
1968	1968-01-21	1968-12-24
1969	1969-01-15	1969-12-15
1970	1970-01-02	1970-12-31
1972	1972-01-12	1972-11-03
1982	1982-01-07	1982-12-09
1999	1999-01-23	1999-12-28
2000	2000-01-23	2000-12-23
2001	2001-01-25	2001-12-11
2002	2002-01-02	2002-12-06
2003	2003-01-01	2003-12-22
2004	2004-01-05	2004-12-28
2005	2005-02-03	2005-12-07
2006	2006-01-02	2006-12-26
2007	2007-01-21	2007-12-23
2008	2008-01-20	2008-12-14
2009	2009-03-04	2009-12-18
2010	2010-01-01	2010-12-20
2011	2011-01-13	2011-12-26
2012	2012-01-08	2012-11-07
2013	2013-02-01	2013-12-10
2014	2014-01-02	2014-12-07
2015	2015-01-14	2015-12-27
2016	2016-01-29	2016-12-30
2017	2017-01-14	2017-12-30
2018	2018-01-14	2018-12-14
2019	2019-01-31	2019-11-30
2020	2020-02-02	2020-12-23
2021	2021-01-16	2021-12-03
2022	2022-01-08	2022-12-14
2023	2023-02-03	2023-12-27
2025	2025-01-07	2025-12-22
2026	2026-02-12	2026-08-25

Every Fixed Threshold

Fixed thresholds at Montrose
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
10 mm (0.39 in): Days with 10 mm or more rain	66	52	1952	20
25 mm (0.98 in): Days with 25 mm or more rain	66	17	1924	3
50 mm (1.97 in): Days with 50 mm or more rain	30	3	1934	1
100 mm (3.94 in): Days with 100 mm or more rain	5	1	1934	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1918.

Download the Data

Data for Montrose threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Montrose Threshold Days by Year

Key Facts for Montrose Thresholds

Days with 10 mm (0.39 in) or more of precipitation

Every Fixed Threshold

Download the Data

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