Chaska Threshold Days by Year (USC00211465)

20 fixed thresholds counted per year at Chaska (USC00211465): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Chaska Thresholds

Chaska: days with 10 mm (0.39 in) or more of precipitation in 71 years, most in 1993 with 35.
Chaska: days with 25 mm (0.98 in) or more of precipitation in 71 years, most in 1999 with 14.
Chaska: days with a maximum temperature at or above 30 C (86 F) in 70 years, most in 1988 with 82.
Chaska: days with a maximum temperature at or above 90 F (32.2 C) in 70 years, most in 1933 with 54.
20 fixed thresholds have at least one qualifying day at Chaska.

Days at or above 30 C (86 F)

70 years with a qualifying day

Days per year at Chaska with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 82 in 1988.

Days at or above 30 C (86 F) per year at Chaska
Year	Days	Decade average
1926	28	30.8
1927	23	30.8
1928	32	30.8
1929	40	30.8
1930	48	57.8
1931	68	57.8
1932	45	57.8
1933	78	57.8
1934	73	57.8
1935	55	57.8
1936	65	57.8
1937	57	57.8
1938	29	57.8
1939	60	57.8
1940	47	43
1941	55	43
1942	24	43
1943	45	43
1944	29	43
1945	22	43
1946	30	43
1947	55	43
1948	57	43
1949	66	43
1950	33	36.6
1951	18	36.6
1952	45	36.6
1953	38	36.6
1954	28	36.6
1955	55	36.6
1956	27	36.6
1957	30	36.6
1958	38	36.6
1959	54	36.6
1960	34	34.9
1961	42	34.9
1962	28	34.9
1963	39	34.9
1964	39	34.9
1966	39	34.9
1967	17	34.9
1968	33	34.9
1969	43	34.9
1970	43	45.3
1971	30	45.3
1972	45	45.3
1973	36	45.3
1974	41	45.3
1975	56	45.3
1976	66	45.3
1980	58	46.7
1981	24	46.7
1982	43	46.7
1983	60	46.7
1984	34	46.7
1985	38	46.7
1986	32	46.7
1987	59	46.7
1988	82	46.7
1989	37	46.7
1990	38	35.6
1991	41	35.6
1992	16	35.6
1993	15	35.6
1994	24	35.6
1995	42	35.6
1996	28	35.6
1997	40	35.6
1998	56	35.6
1999	56	35.6

For each year, a bar from the first to the last day at Chaska meeting 30 C (86 F).

First to last qualifying date each year at Chaska
Year	First date	Last date
1926	1926-05-01	1926-09-17
1927	1927-06-24	1927-09-15
1928	1928-05-09	1928-10-11
1929	1929-05-28	1929-09-23
1930	1930-05-21	1930-09-24
1931	1931-05-15	1931-09-21
1932	1932-05-13	1932-09-09
1933	1933-06-01	1933-09-25
1934	1934-04-28	1934-09-13
1935	1935-06-13	1935-09-25
1936	1936-05-06	1936-09-23
1937	1937-05-29	1937-09-23
1938	1938-06-14	1938-08-23
1939	1939-05-05	1939-09-22
1940	1940-05-12	1940-09-19
1941	1941-05-18	1941-09-21
1942	1942-06-05	1942-09-12
1943	1943-05-28	1943-09-27
1944	1944-05-29	1944-09-17
1945	1945-06-23	1945-09-09
1946	1946-06-10	1946-09-04
1947	1947-06-26	1947-10-21
1948	1948-05-19	1948-09-18
1949	1949-05-03	1949-09-03
1950	1950-05-23	1950-10-18
1951	1951-06-14	1951-09-11
1952	1952-04-27	1952-09-13
1953	1953-05-29	1953-10-03
1954	1954-06-09	1954-09-01
1955	1955-05-02	1955-09-18
1956	1956-05-29	1956-09-28
1957	1957-04-30	1957-09-02
1958	1958-04-16	1958-09-24
1959	1959-05-01	1959-09-09
1960	1960-04-22	1960-09-07
1961	1961-05-11	1961-09-10
1962	1962-04-25	1962-08-27
1963	1963-05-07	1963-10-05
1964	1964-04-17	1964-09-03
1966	1966-05-27	1966-09-12
1967	1967-05-19	1967-10-03
1968	1968-04-30	1968-10-16
1969	1969-05-27	1969-09-15
1970	1970-04-27	1970-09-07
1971	1971-06-03	1971-09-30
1972	1972-05-16	1972-08-30
1973	1973-05-31	1973-09-02
1974	1974-06-03	1974-09-26
1975	1975-05-17	1975-10-12
1976	1976-06-03	1976-09-13
1980	1980-04-21	1980-09-09
1981	1981-06-06	1981-09-13
1982	1982-05-04	1982-09-11
1983	1983-06-10	1983-09-27
1984	1984-05-31	1984-09-20
1985	1985-04-17	1985-09-19
1986	1986-05-29	1986-09-26
1987	1987-04-17	1987-09-27
1988	1988-05-12	1988-09-18
1989	1989-06-17	1989-08-22
1990	1990-04-23	1990-09-13
1991	1991-04-06	1991-08-31
1992	1992-04-30	1992-08-10
1993	1993-06-11	1993-08-27
1994	1994-05-19	1994-09-15
1995	1995-06-14	1995-09-06
1996	1996-05-17	1996-09-10
1997	1997-05-31	1997-10-07
1998	1998-05-14	1998-09-20
1999	1999-05-28	1999-09-25

Every Fixed Threshold

Fixed thresholds at Chaska
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	70	82	1988	56
35 C (95 F): Days	62	31	1933	8
40 C (104 F): Days	8	7	1936	2
90 F (32.2 C): Days	70	54	1933	28
100 F (37.8 C): Days	24	16	1931	2
0 C (32 F): Ice days (max	70	98	1950	33
0 C (32 F): Frost days (min	70	179	1943	137
-10 C (14 F): Days with min	70	98	1970	42
-20 C (-4 F): Days with min	70	45	1929	12
-30 C (-22 F): Days with min	54	16	1936	5
-40 C (-40 F): Days with min	2	1	1935	1
20 C (68 F): Tropical nights (min	70	30	1983	21
25 C (77 F): Days with min	23	4	1931	4
10 mm (0.39 in): Days with 10 mm or more rain	71	35	1993	31
25 mm (0.98 in): Days with 25 mm or more rain	71	14	1999	14
50 mm (1.97 in): Days with 50 mm or more rain	49	4	1960	2
100 mm (3.94 in): Days with 100 mm or more rain	9	1	1927	1
10 cm (3.9 in): Days with 10 cm or more snowfall	54	8	1994	2
25 cm (9.8 in): Days with 25 cm or more snowfall	8	3	1982	1
50 cm (19.7 in): Days with 50 cm or more snowfall	1	1	1991	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1926.

Download the Data

Data for Chaska 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).

Chaska Threshold Days by Year (USC00211465)

Key Facts for Chaska Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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