Anamosa 1 WNW Threshold Days by Year

18 fixed thresholds counted per year at Anamosa 1 WNW (USC00130213): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Anamosa 1 WNW Thresholds

Anamosa 1 WNW: days with a maximum temperature at or above 30 C (86 F) in 71 years, most in 1988 with 77.
Anamosa 1 WNW: days with a maximum temperature at or below 0 C (32 F) in 71 years, most in 1960 with 78.
Anamosa 1 WNW: days with a maximum temperature at or above 90 F (32.2 C) in 70 years, most in 1983 with 51.
Anamosa 1 WNW: nights with a minimum temperature at or below 0 C (32 F) in 70 years, most in 1952 with 179.
18 fixed thresholds have at least one qualifying day at Anamosa 1 WNW.

Days at or above 30 C (86 F)

71 years with a qualifying day

Days per year at Anamosa 1 WNW with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 77 in 1988.

Days at or above 30 C (86 F) per year at Anamosa 1 WNW
Year	Days	Decade average
1938	37	40.5
1939	44	40.5
1940	36	38.2
1941	50	38.2
1942	34	38.2
1943	43	38.2
1944	39	38.2
1945	19	38.2
1946	23	38.2
1947	55	38.2
1948	42	38.2
1949	41	38.2
1950	13	36.5
1951	11	36.5
1952	49	36.5
1953	45	36.5
1954	53	36.5
1955	60	36.5
1956	40	36.5
1957	35	36.5
1958	19	36.5
1959	40	36.5
1960	26	30
1961	24	30
1962	26	30
1963	39	30
1964	43	30
1965	22	30
1966	36	30
1967	18	30
1968	41	30
1969	25	30
1970	37	45.6
1971	48	45.6
1973	41	45.6
1974	38	45.6
1975	55	45.6
1976	55	45.6
1977	53	45.6
1978	45	45.6
1979	38	45.6
1981	22	47.2
1982	27	47.2
1983	73	47.2
1984	45	47.2
1985	47	47.2
1986	39	47.2
1987	61	47.2
1988	77	47.2
1989	34	47.2
1990	25	34.2
1991	54	34.2
1992	18	34.2
1993	20	34.2
1994	31	34.2
1995	54	34.2
1996	26	34.2
1997	31	34.2
1998	45	34.2
1999	38	34.2
2000	26	31.6
2001	41	31.6
2002	49	31.6
2003	33	31.6
2004	18	31.6
2005	55	31.6
2006	29	31.6
2007	42	31.6
2008	14	31.6
2009	9	31.6
2010	29	29

For each year, a bar from the first to the last day at Anamosa 1 WNW meeting 30 C (86 F).

First to last qualifying date each year at Anamosa 1 WNW
Year	First date	Last date
1938	1938-06-21	1938-10-04
1939	1939-05-21	1939-10-07
1940	1940-05-13	1940-09-21
1941	1941-05-15	1941-09-22
1942	1942-04-29	1942-09-16
1943	1943-05-29	1943-08-31
1944	1944-05-15	1944-09-03
1945	1945-06-23	1945-09-07
1946	1946-06-10	1946-08-16
1947	1947-06-09	1947-10-21
1948	1948-06-02	1948-09-19
1949	1949-05-03	1949-08-26
1950	1950-06-25	1950-10-18
1951	1951-07-07	1951-10-01
1952	1952-04-29	1952-09-30
1953	1953-05-25	1953-10-18
1954	1954-04-26	1954-10-03
1955	1955-05-23	1955-09-18
1956	1956-05-13	1956-09-03
1957	1957-06-05	1957-09-01
1958	1958-06-10	1958-08-30
1959	1959-05-03	1959-09-20
1960	1960-06-28	1960-09-08
1961	1961-05-31	1961-09-10
1962	1962-05-05	1962-10-10
1963	1963-05-08	1963-10-06
1964	1964-05-18	1964-09-09
1965	1965-05-25	1965-09-09
1966	1966-06-20	1966-09-02
1967	1967-05-18	1967-07-30
1968	1968-05-02	1968-09-15
1969	1969-05-27	1969-10-01
1970	1970-04-28	1970-09-20
1971	1971-05-17	1971-10-01
1973	1973-07-01	1973-10-09
1974	1974-04-26	1974-08-27
1975	1975-05-18	1975-10-13
1976	1976-05-20	1976-10-03
1977	1977-04-18	1977-08-31
1978	1978-05-25	1978-09-19
1979	1979-05-08	1979-09-01
1981	1981-04-27	1981-08-14
1982	1982-06-28	1982-09-30
1983	1983-06-10	1983-10-02
1984	1984-05-18	1984-09-24
1985	1985-04-18	1985-09-19
1986	1986-03-29	1986-09-26
1987	1987-04-20	1987-09-05
1988	1988-05-14	1988-09-18
1989	1989-05-29	1989-08-23
1990	1990-06-12	1990-09-27
1991	1991-05-12	1991-09-13
1992	1992-05-16	1992-08-24
1993	1993-06-17	1993-09-13
1994	1994-04-18	1994-09-30
1995	1995-06-07	1995-09-13
1996	1996-05-17	1996-09-05
1997	1997-06-20	1997-10-04
1998	1998-05-14	1998-09-26
1999	1999-06-06	1999-09-08
2000	2000-06-01	2000-09-19
2001	2001-05-02	2001-09-03
2002	2002-04-15	2002-09-30
2003	2003-04-14	2003-09-11
2004	2004-04-16	2004-09-14
2005	2005-06-07	2005-10-04
2006	2006-05-25	2006-10-04
2007	2007-04-30	2007-10-08
2008	2008-06-08	2008-09-03
2009	2009-06-10	2009-08-09
2010	2010-05-24	2010-10-11

Every Fixed Threshold

Fixed thresholds at Anamosa 1 WNW
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	71	77	1988	29
35 C (95 F): Days	42	25	1988	1
40 C (104 F): Days	1	1	1940	1
90 F (32.2 C): Days	70	51	1983	7
100 F (37.8 C): Days	7	9	1988	9
0 C (32 F): Ice days (max	71	78	1960	68
0 C (32 F): Frost days (min	70	179	1952	135
-10 C (14 F): Days with min	70	80	2008	62
-20 C (-4 F): Days with min	70	39	1963	18
-30 C (-22 F): Days with min	27	9	1963	3
20 C (68 F): Tropical nights (min	69	31	1947	22
25 C (77 F): Days with min	14	2	1990	1
10 mm (0.39 in): Days with 10 mm or more rain	66	43	1993	34
25 mm (0.98 in): Days with 25 mm or more rain	66	20	2010	20
50 mm (1.97 in): Days with 50 mm or more rain	50	7	2008	3
100 mm (3.94 in): Days with 100 mm or more rain	12	1	1939	1
10 cm (3.9 in): Days with 10 cm or more snowfall	51	7	1959	3
25 cm (9.8 in): Days with 25 cm or more snowfall	3	1	1990	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1938.

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Data for Anamosa 1 WNW 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 2026-10-14 (14 October 2026). Threshold counts are computed by this site.

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

Anamosa 1 WNW Threshold Days by Year

Key Facts for Anamosa 1 WNW Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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