Ottumwa Ind AP Threshold Days by Year (USW00014950)

18 fixed thresholds counted per year at Ottumwa Ind AP (USW00014950): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Ottumwa Ind AP Thresholds

Ottumwa Ind AP: days with a maximum temperature at or above 30 C (86 F) in 78 years, most in 1983 with 83.
Ottumwa Ind AP: days with a maximum temperature at or above 90 F (32.2 C) in 78 years, most in 1983 with 63.
Ottumwa Ind AP: days with a maximum temperature at or below 0 C (32 F) in 78 years, most in 1978 with 80.
Ottumwa Ind AP: nights with a minimum temperature at or below 0 C (32 F) in 78 years, most in 1952 with 154.
18 fixed thresholds have at least one qualifying day at Ottumwa Ind AP.

Days at or above 30 C (86 F)

78 years with a qualifying day

Days per year at Ottumwa Ind AP with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 83 in 1983.

Days at or above 30 C (86 F) per year at Ottumwa Ind AP
Year	Days	Decade average
1948	60	54.5
1949	49	54.5
1950	28	49.8
1951	31	49.8
1952	59	49.8
1953	71	49.8
1954	64	49.8
1955	60	49.8
1956	67	49.8
1957	43	49.8
1958	30	49.8
1959	45	49.8
1960	43	48.6
1961	52	48.6
1962	53	48.6
1963	63	48.6
1964	56	48.6
1965	34	48.6
1966	47	48.6
1967	33	48.6
1968	59	48.6
1969	46	48.6
1970	46	48
1971	64	48
1972	48	48
1973	49	48
1974	38	48
1975	54	48
1976	39	48
1977	50	48
1978	49	48
1979	43	48
1980	64	54
1981	31	54
1982	31	54
1983	83	54
1984	59	54
1985	54	54
1986	40	54
1987	66	54
1988	75	54
1989	37	54
1990	42	43.2
1991	62	43.2
1992	26	43.2
1993	29	43.2
1994	42	43.2
1995	56	43.2
1996	36	43.2
1997	39	43.2
1998	50	43.2
1999	50	43.2
2001	41	37.3
2002	55	37.3
2003	38	37.3
2004	16	37.3
2005	53	37.3
2006	44	37.3
2007	58	37.3
2008	17	37.3
2009	14	37.3
2010	41	50
2011	55	50
2012	69	50
2013	46	50
2014	22	50
2015	33	50
2016	45	50
2017	63	50
2018	69	50
2019	57	50
2020	46	51.3
2021	56	51.3
2022	64	51.3
2023	51	51.3
2024	42	51.3
2025	49	51.3
2026	51	51.3

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

First to last qualifying date each year at Ottumwa Ind AP
Year	First date	Last date
1948	1948-04-18	1948-09-20
1949	1949-04-25	1949-10-07
1950	1950-05-04	1950-10-30
1951	1951-06-01	1951-10-01
1952	1952-04-29	1952-09-30
1953	1953-05-25	1953-10-15
1954	1954-06-09	1954-10-03
1955	1955-05-06	1955-09-18
1956	1956-05-11	1956-10-12
1957	1957-06-05	1957-09-01
1958	1958-05-11	1958-09-24
1959	1959-05-02	1959-09-20
1960	1960-04-22	1960-09-08
1961	1961-05-31	1961-09-10
1962	1962-05-05	1962-10-14
1963	1963-05-08	1963-10-10
1964	1964-04-16	1964-09-09
1965	1965-04-30	1965-09-09
1966	1966-05-05	1966-09-02
1967	1967-05-18	1967-08-23
1968	1968-05-02	1968-10-14
1969	1969-05-28	1969-10-04
1970	1970-04-28	1970-09-20
1971	1971-05-17	1971-10-01
1972	1972-05-19	1972-09-19
1973	1973-06-07	1973-09-02
1974	1974-05-16	1974-08-26
1975	1975-05-18	1975-10-13
1976	1976-06-08	1976-10-01
1977	1977-05-15	1977-09-08
1978	1978-05-25	1978-09-19
1979	1979-05-08	1979-09-11
1980	1980-04-21	1980-09-20
1981	1981-04-27	1981-09-30
1982	1982-05-04	1982-09-12
1983	1983-06-09	1983-10-02
1984	1984-05-18	1984-09-24
1985	1985-04-18	1985-09-19
1986	1986-03-29	1986-08-25
1987	1987-04-20	1987-09-05
1988	1988-05-14	1988-09-22
1989	1989-04-24	1989-10-13
1990	1990-06-10	1990-10-05
1991	1991-05-13	1991-09-29
1992	1992-04-30	1992-08-25
1993	1993-06-16	1993-09-12
1994	1994-05-23	1994-09-30
1995	1995-06-07	1995-09-13
1996	1996-05-17	1996-09-07
1997	1997-05-18	1997-10-06
1998	1998-05-14	1998-09-26
1999	1999-06-05	1999-10-15
2001	2001-06-10	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	2005-06-06	2005-10-04
2006	2006-04-13	2006-10-03
2007	2007-04-29	2007-10-07
2008	2008-06-07	2008-09-02
2009	2009-06-17	2009-08-13
2010	2010-04-01	2010-09-20
2011	2011-04-03	2011-09-12
2012	2012-05-15	2012-09-12
2013	2013-04-30	2013-09-19
2014	2014-05-07	2014-09-04
2015	2015-06-05	2015-09-17
2016	2016-05-30	2016-10-17
2017	2017-05-15	2017-10-02
2018	2018-05-23	2018-10-03
2019	2019-04-21	2019-10-01
2020	2020-06-02	2020-09-06
2021	2021-04-26	2021-09-30
2022	2022-05-09	2022-10-22
2023	2023-05-07	2023-10-03
2024	2024-04-14	2024-10-11
2025	2025-05-10	2025-10-04
2026	2026-03-21	2026-10-12

Every Fixed Threshold

Fixed thresholds at Ottumwa Ind AP
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	78	83	1983	51
35 C (95 F): Days	62	32	1983	4
40 C (104 F): Days	5	4	1983	2
90 F (32.2 C): Days	78	63	1983	23
100 F (37.8 C): Days	24	15	1983	1
0 C (32 F): Ice days (max	78	80	1978	27
0 C (32 F): Frost days (min	78	154	1952	69
-10 C (14 F): Days with min	78	71	1978	24
-20 C (-4 F): Days with min	75	29	1963	4
-30 C (-22 F): Days with min	3	2	1996	2
20 C (68 F): Tropical nights (min	78	51	1983	42
25 C (77 F): Days with min	38	8	1987	1
10 mm (0.39 in): Days with 10 mm or more rain	78	45	2010	25
25 mm (0.98 in): Days with 25 mm or more rain	77	19	1998	6
50 mm (1.97 in): Days with 50 mm or more rain	57	6	1998	1
100 mm (3.94 in): Days with 100 mm or more rain	6	1	1992	1
10 cm (3.9 in): Days with 10 cm or more snowfall	42	6	1960	2
25 cm (9.8 in): Days with 25 cm or more snowfall	6	2	2024	2

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1948.

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Data for Ottumwa Ind AP 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 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Ottumwa Ind AP Threshold Days by Year (USW00014950)

Key Facts for Ottumwa Ind AP Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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