Chilo Meldahl Locks & Dam Threshold Days by Year (USC00331536)

18 fixed thresholds counted per year at Chilo Meldahl Locks & Dam (USC00331536): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Chilo Meldahl Locks & Dam Thresholds

Chilo Meldahl Locks & Dam: days with 10 mm (0.39 in) or more of precipitation in 94 years, most in 1950 with 51.
Chilo Meldahl Locks & Dam: days with 25 mm (0.98 in) or more of precipitation in 94 years, most in 1990 with 18.
Chilo Meldahl Locks & Dam: days with 50 mm (1.97 in) or more of precipitation in 69 years, most in 2008 with 5.
Chilo Meldahl Locks & Dam: days with a maximum temperature at or above 30 C (86 F) in 67 years, most in 1921 with 115.
18 fixed thresholds have at least one qualifying day at Chilo Meldahl Locks & Dam.

Days at or above 30 C (86 F)

67 years with a qualifying day

Days per year at Chilo Meldahl Locks & Dam with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 115 in 1921.

Days at or above 30 C (86 F) per year at Chilo Meldahl Locks & Dam
Year	Days	Decade average
1920	63	95
1921	115	95
1922	115	95
1923	93	95
1925	89	95
1938	53	52
1939	51	52
1940	59	54.1
1941	84	54.1
1942	34	54.1
1943	52	54.1
1944	72	54.1
1945	36	54.1
1946	32	54.1
1947	50	54.1
1949	68	54.1
1950	29	69.6
1951	70	69.6
1952	79	69.6
1953	87	69.6
1954	84	69.6
1955	77	69.6
1956	55	69.6
1957	69	69.6
1958	52	69.6
1959	94	69.6
1960	67	64
1961	64	64
1962	84	64
1963	72	64
1965	65	64
1966	59	64
1967	46	64
1968	55	64
1969	64	64
1970	73	53.9
1971	56	53.9
1972	49	53.9
1973	59	53.9
1974	38	53.9
1976	36	53.9
1977	66	53.9
1980	66	52
1981	43	52
1984	55	52
1985	36	52
1986	51	52
1987	67	52
1988	61	52
1989	37	52
1990	45	56.1
1991	65	56.1
1994	47	56.1
1995	58	56.1
1996	45	56.1
1998	68	56.1
1999	65	56.1
2001	46	54.5
2002	75	54.5
2003	36	54.5
2004	29	54.5
2005	77	54.5
2007	94	54.5
2008	51	54.5
2009	28	54.5
2010	112	91
2011	70	91

For each year, a bar from the first to the last day at Chilo Meldahl Locks & Dam meeting 30 C (86 F).

First to last qualifying date each year at Chilo Meldahl Locks & Dam
Year	First date	Last date
1920	1920-04-22	1920-10-22
1921	1921-05-19	1921-09-23
1922	1922-05-09	1922-10-07
1923	1923-05-19	1923-10-12
1925	1925-04-23	1925-09-26
1938	1938-05-21	1938-09-27
1939	1939-05-24	1939-10-10
1940	1940-05-07	1940-09-22
1941	1941-05-07	1941-10-07
1942	1942-04-30	1942-09-14
1943	1943-06-03	1943-09-01
1944	1944-05-18	1944-09-20
1945	1945-06-01	1945-09-28
1946	1946-06-11	1946-09-27
1947	1947-06-09	1947-10-23
1949	1949-05-04	1949-08-27
1950	1950-05-05	1950-09-01
1951	1951-04-30	1951-10-05
1952	1952-06-06	1952-10-01
1953	1953-05-22	1953-10-21
1954	1954-04-10	1954-10-05
1955	1955-04-18	1955-09-21
1956	1956-05-08	1956-09-13
1957	1957-05-12	1957-09-21
1958	1958-06-01	1958-09-26
1959	1959-05-02	1959-10-05
1960	1960-04-22	1960-09-23
1961	1961-06-02	1961-10-12
1962	1962-04-25	1962-10-15
1963	1963-05-08	1963-10-25
1965	1965-05-07	1965-09-22
1966	1966-05-23	1966-09-04
1967	1967-05-26	1967-10-05
1968	1968-06-06	1968-09-24
1969	1969-05-05	1969-09-08
1970	1970-04-30	1970-09-25
1971	1971-05-18	1971-10-04
1972	1972-05-25	1972-09-22
1973	1973-06-04	1973-09-29
1974	1974-05-18	1974-09-12
1976	1976-04-21	1976-09-09
1977	1977-04-19	1977-09-11
1980	1980-05-29	1980-09-22
1981	1981-04-28	1981-10-01
1984	1984-04-28	1984-09-23
1985	1985-05-14	1985-09-10
1986	1986-04-27	1986-10-01
1987	1987-04-22	1987-09-15
1988	1988-05-31	1988-09-15
1989	1989-05-31	1989-09-22
1990	1990-06-09	1990-09-08
1991	1991-05-15	1991-09-17
1994	1994-05-24	1994-09-16
1995	1995-06-10	1995-09-07
1996	1996-05-19	1996-09-12
1998	1998-05-15	1998-09-30
1999	1999-05-12	1999-09-29
2001	2001-04-29	2001-09-10
2002	2002-06-02	2002-09-21
2003	2003-06-24	2003-09-02
2004	2004-05-10	2004-09-08
2005	2005-05-14	2005-10-07
2007	2007-05-01	2007-10-10
2008	2008-06-03	2008-09-23
2009	2009-04-27	2009-08-28
2010	2010-04-07	2010-10-12
2011	2011-05-12	2011-09-14

Every Fixed Threshold

Fixed thresholds at Chilo Meldahl Locks & Dam
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	67	115	1921	70
35 C (95 F): Days	49	26	1953	10
40 C (104 F): Days	1	1	1954	1
90 F (32.2 C): Days	67	81	1921	40
100 F (37.8 C): Days	15	6	1953	2
0 C (32 F): Ice days (max	67	41	1977	12
0 C (32 F): Frost days (min	60	144	1976	100
-10 C (14 F): Days with min	60	43	1977	10
-20 C (-4 F): Days with min	25	12	1977	2
-30 C (-22 F): Days with min	1	2	1994	2
20 C (68 F): Tropical nights (min	60	47	2010	36
25 C (77 F): Days with min	1	1	1999	1
10 mm (0.39 in): Days with 10 mm or more rain	94	51	1950	31
25 mm (0.98 in): Days with 25 mm or more rain	94	18	1990	4
50 mm (1.97 in): Days with 50 mm or more rain	69	5	2008	3
100 mm (3.94 in): Days with 100 mm or more rain	11	2	1965	1
10 cm (3.9 in): Days with 10 cm or more snowfall	16	3	1960	2
25 cm (9.8 in): Days with 25 cm or more snowfall	1	1	1940	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1920.

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Data for Chilo Meldahl Locks & Dam 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 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Chilo Meldahl Locks & Dam Threshold Days by Year (USC00331536)

Key Facts for Chilo Meldahl Locks & Dam Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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