Guide Rock Threshold Days by Year (USC00253485)

18 fixed thresholds counted per year at Guide Rock (USC00253485): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Guide Rock Thresholds

Guide Rock: days with 10 mm (0.39 in) or more of precipitation in 95 years, most in 1993 with 40.
Guide Rock: days with 25 mm (0.98 in) or more of precipitation in 95 years, most in 1905 with 14.
Guide Rock: days with 50 mm (1.97 in) or more of precipitation in 64 years, most in 1902 with 4.
Guide Rock: days with 10 cm (3.9 in) or more of snowfall in 52 years, most in 2001 with 6.
18 fixed thresholds have at least one qualifying day at Guide Rock.

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

95 years with a qualifying day

Days per year at Guide Rock with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 40 in 1993.

Days with 10 mm (0.39 in) or more of precipitation per year at Guide Rock
Year	Days	Decade average
1901	15	22.5
1902	27	22.5
1903	22	22.5
1905	26	22.5
1910	20	19.9
1911	21	19.9
1912	20	19.9
1913	21	19.9
1914	14	19.9
1916	20	19.9
1917	15	19.9
1918	27	19.9
1919	21	19.9
1920	22	20.7
1921	14	20.7
1922	15	20.7
1923	30	20.7
1924	18	20.7
1925	24	20.7
1926	20	20.7
1927	18	20.7
1928	25	20.7
1932	13	14.8
1933	15	14.8
1934	9	14.8
1935	17	14.8
1936	14	14.8
1937	21	14.8
1938	15	14.8
1939	14	14.8
1940	13	19.5
1941	27	19.5
1942	25	19.5
1943	12	19.5
1944	27	19.5
1945	21	19.5
1946	21	19.5
1947	16	19.5
1948	13	19.5
1949	20	19.5
1950	18	19.7
1951	32	19.7
1952	16	19.7
1953	17	19.7
1954	18	19.7
1955	12	19.7
1956	10	19.7
1957	26	19.7
1958	25	19.7
1959	23	19.7
1960	24	22.5
1961	23	22.5
1962	25	22.5
1963	22	22.5
1964	16	22.5
1965	29	22.5
1966	16	22.5
1967	20	22.5
1968	23	22.5
1969	27	22.5
1970	21	24.1
1971	23	24.1
1972	30	24.1
1973	33	24.1
1974	14	24.1
1975	21	24.1
1976	18	24.1
1977	28	24.1
1978	26	24.1
1979	27	24.1
1980	19	21.5
1981	29	21.5
1982	27	21.5
1983	18	21.5
1984	21	21.5
1989	15	21.5
1990	23	22
1991	15	22
1992	24	22
1993	40	22
1994	14	22
1995	22	22
1996	21	22
1997	17	22
1998	23	22
1999	21	22
2000	17	22.6
2001	30	22.6
2002	17	22.6
2003	16	22.6
2004	19	22.6
2005	22	22.6
2006	25	22.6
2007	29	22.6
2008	28	22.6

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

First to last qualifying date each year at Guide Rock
Year	First date	Last date
1901	1901-01-09	1901-10-28
1902	1902-01-25	1902-12-14
1903	1903-02-04	1903-11-30
1905	1905-01-11	1905-11-23
1910	1910-01-04	1910-10-01
1911	1911-02-13	1911-12-20
1912	1912-02-13	1912-11-12
1913	1913-02-21	1913-12-20
1914	1914-02-22	1914-12-20
1916	1916-03-24	1916-12-17
1917	1917-04-19	1917-11-17
1918	1918-01-10	1918-11-15
1919	1919-02-02	1919-11-29
1920	1920-02-05	1920-11-06
1921	1921-04-05	1921-09-19
1922	1922-03-18	1922-11-04
1923	1923-03-02	1923-11-12
1924	1924-03-01	1924-12-23
1925	1925-03-12	1925-12-03
1926	1926-01-31	1926-12-09
1927	1927-02-13	1927-09-26
1928	1928-02-06	1928-11-29
1932	1932-01-05	1932-10-23
1933	1933-03-05	1933-12-02
1934	1934-02-18	1934-09-26
1935	1935-05-14	1935-11-27
1936	1936-04-26	1936-12-06
1937	1937-01-07	1937-10-17
1938	1938-02-17	1938-09-03
1939	1939-03-12	1939-10-09
1940	1940-03-02	1940-11-26
1941	1941-03-06	1941-12-26
1942	1942-03-26	1942-12-22
1943	1943-02-03	1943-08-09
1944	1944-01-27	1944-11-26
1945	1945-03-25	1945-12-25
1946	1946-03-06	1946-11-10
1947	1947-04-03	1947-12-04
1948	1948-02-28	1948-11-05
1949	1949-02-13	1949-10-10
1950	1950-05-05	1950-10-02
1951	1951-01-02	1951-11-25
1952	1952-03-10	1952-12-22
1953	1953-02-20	1953-12-03
1954	1954-02-20	1954-10-26
1955	1955-02-04	1955-09-26
1956	1956-05-29	1956-09-05
1957	1957-03-18	1957-11-18
1958	1958-02-27	1958-11-18
1959	1959-03-26	1959-12-27
1960	1960-01-15	1960-11-28
1961	1961-03-06	1961-12-17
1962	1962-01-26	1962-10-20
1963	1963-03-11	1963-09-23
1964	1964-03-20	1964-11-15
1965	1965-01-23	1965-10-19
1966	1966-02-09	1966-12-28
1967	1967-04-01	1967-09-26
1968	1968-04-13	1968-12-18
1969	1969-02-14	1969-10-30
1970	1970-04-12	1970-11-08
1971	1971-01-03	1971-11-17
1972	1972-03-20	1972-12-30
1973	1973-03-03	1973-12-04
1974	1974-04-11	1974-12-14
1975	1975-02-03	1975-11-19
1976	1976-02-21	1976-10-07
1977	1977-03-10	1977-11-08
1978	1978-02-13	1978-11-25
1979	1979-01-19	1979-11-20
1980	1980-01-16	1980-12-07
1981	1981-03-05	1981-12-16
1982	1982-03-19	1982-12-28
1983	1983-02-01	1983-11-09
1984	1984-02-18	1984-12-15
1989	1989-05-13	1989-10-27
1990	1990-01-20	1990-11-04
1991	1991-03-02	1991-12-12
1992	1992-01-01	1992-12-15
1993	1993-01-09	1993-12-14
1994	1994-01-27	1994-12-06
1995	1995-01-27	1995-10-05
1996	1996-04-14	1996-11-17
1997	1997-04-10	1997-11-30
1998	1998-01-21	1998-11-02
1999	1999-01-31	1999-11-23
2000	2000-02-23	2000-11-12
2001	2001-02-09	2001-11-24
2002	2002-01-31	2002-10-30
2003	2003-03-18	2003-11-02
2004	2004-01-26	2004-11-19
2005	2005-01-05	2005-11-28
2006	2006-03-18	2006-12-31
2007	2007-01-21	2007-12-15
2008	2008-04-11	2008-11-11

Every Fixed Threshold

Fixed thresholds at Guide Rock
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	2	97	1901	63
35 C (95 F): Days	2	61	1901	14
40 C (104 F): Days	1	17	1901	17
90 F (32.2 C): Days	2	81	1901	48
100 F (37.8 C): Days	2	44	1901	3
110 F (43.3 C): Days	1	3	1901	3
0 C (32 F): Ice days (max	2	38	1901	37
0 C (32 F): Frost days (min	2	147	1901	133
-10 C (14 F): Days with min	2	40	1902	40
-20 C (-4 F): Days with min	2	9	1901	8
20 C (68 F): Tropical nights (min	2	61	1901	43
25 C (77 F): Days with min	2	21	1901	6
10 mm (0.39 in): Days with 10 mm or more rain	95	40	1993	28
25 mm (0.98 in): Days with 25 mm or more rain	95	14	1905	13
50 mm (1.97 in): Days with 50 mm or more rain	64	4	1902	3
100 mm (3.94 in): Days with 100 mm or more rain	7	1	1911	1
10 cm (3.9 in): Days with 10 cm or more snowfall	52	6	2001	3
25 cm (9.8 in): Days with 25 cm or more snowfall	3	1	1924	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1901.

Download the Data

Data for Guide Rock 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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Guide Rock Threshold Days by Year (USC00253485)

Key Facts for Guide Rock Thresholds

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

Every Fixed Threshold

Download the Data

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