Lamoni Threshold Days by Year (USC00134585)

20 fixed thresholds counted per year at Lamoni (USC00134585): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Lamoni Thresholds

Lamoni: days with a maximum temperature at or above 30 C (86 F) in 98 years, most in 1934 with 90.
Lamoni: days with a maximum temperature at or above 90 F (32.2 C) in 98 years, most in 1934 with 76.
Lamoni: days with a maximum temperature at or below 0 C (32 F) in 98 years, most in 1937 with 68.
Lamoni: days with 10 mm (0.39 in) or more of precipitation in 97 years, most in 1993 with 47.
20 fixed thresholds have at least one qualifying day at Lamoni.

Days at or above 30 C (86 F)

98 years with a qualifying day

Days per year at Lamoni with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 90 in 1934.

Days at or above 30 C (86 F) per year at Lamoni
Year	Days	Decade average
1898	39	48.5
1899	58	48.5
1909	61	61
1910	57	59
1911	84	59
1912	60	59
1913	86	59
1915	22	59
1916	70	59
1917	36	59
1918	50	59
1919	66	59
1920	55	53.3
1921	84	53.3
1922	58	53.3
1923	51	53.3
1924	44	53.3
1925	68	53.3
1926	50	53.3
1927	41	53.3
1928	40	53.3
1929	42	53.3
1930	59	63.9
1931	75	63.9
1932	48	63.9
1933	67	63.9
1934	90	63.9
1935	55	63.9
1936	85	63.9
1937	65	63.9
1938	53	63.9
1939	42	63.9
1940	40	50.4
1941	60	50.4
1942	44	50.4
1943	58	50.4
1944	60	50.4
1945	39	50.4
1946	49	50.4
1947	56	50.4
1948	54	50.4
1949	44	50.4
1963	66	46
1964	47	46
1965	31	46
1966	43	46
1967	39	46
1968	50	46
1970	50	50.5
1971	64	50.5
1972	45	50.5
1976	43	50.5
1980	69	51.2
1981	31	51.2
1982	29	51.2
1983	75	51.2
1984	55	51.2
1985	25	51.2
1986	43	51.2
1987	54	51.2
1988	82	51.2
1989	49	51.2
1990	51	44.4
1991	59	44.4
1993	28	44.4
1994	38	44.4
1995	56	44.4
1996	19	44.4
1997	48	44.4
1998	52	44.4
1999	49	44.4
2000	59	48.2
2001	52	48.2
2002	67	48.2
2003	52	48.2
2004	23	48.2
2005	66	48.2
2006	54	48.2
2007	67	48.2
2008	24	48.2
2009	18	48.2
2010	55	59.5
2011	56	59.5
2012	73	59.5
2013	47	59.5
2014	29	59.5
2015	52	59.5
2016	65	59.5
2017	68	59.5
2018	82	59.5
2019	68	59.5
2020	68	72.4
2021	79	72.4
2022	79	72.4
2023	68	72.4
2024	61	72.4
2025	73	72.4
2026	79	72.4

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

First to last qualifying date each year at Lamoni
Year	First date	Last date
1898	1898-05-25	1898-09-28
1899	1899-05-16	1899-10-22
1909	1909-05-05	1909-09-18
1910	1910-04-28	1910-09-18
1911	1911-05-10	1911-09-28
1912	1912-05-23	1912-09-09
1913	1913-05-28	1913-10-03
1915	1915-04-28	1915-09-13
1916	1916-04-13	1916-10-09
1917	1917-05-19	1917-09-16
1918	1918-05-10	1918-08-29
1919	1919-06-13	1919-10-01
1920	1920-05-22	1920-10-10
1921	1921-05-20	1921-09-22
1922	1922-06-08	1922-10-06
1923	1923-05-31	1923-09-05
1924	1924-05-05	1924-09-11
1925	1925-05-20	1925-09-19
1926	1926-04-29	1926-09-21
1927	1927-05-23	1927-10-25
1928	1928-05-03	1928-10-10
1929	1929-04-04	1929-09-27
1930	1930-04-10	1930-09-22
1931	1931-05-16	1931-10-10
1932	1932-05-13	1932-09-18
1933	1933-05-19	1933-09-18
1934	1934-05-06	1934-09-11
1935	1935-06-13	1935-09-24
1936	1936-04-20	1936-09-22
1937	1937-05-20	1937-10-29
1938	1938-06-23	1938-10-15
1939	1939-04-24	1939-10-07
1940	1940-05-13	1940-09-22
1941	1941-05-14	1941-09-21
1942	1942-05-26	1942-09-16
1943	1943-04-29	1943-09-05
1944	1944-05-14	1944-09-17
1945	1945-06-27	1945-09-23
1946	1946-06-06	1946-09-26
1947	1947-06-09	1947-10-06
1948	1948-06-03	1948-09-20
1949	1949-05-04	1949-10-07
1963	1963-05-08	1963-10-14
1964	1964-05-16	1964-09-07
1965	1965-04-30	1965-09-09
1966	1966-05-05	1966-09-02
1967	1967-05-18	1967-10-04
1968	1968-05-01	1968-10-31
1970	1970-04-28	1970-09-20
1971	1971-06-03	1971-10-01
1972	1972-05-21	1972-09-19
1976	1976-06-11	1976-10-02
1980	1980-04-21	1980-09-21
1981	1981-04-25	1981-09-30
1982	1982-06-29	1982-09-01
1983	1983-06-20	1983-10-02
1984	1984-05-18	1984-09-24
1985	1985-05-26	1985-09-19
1986	1986-03-29	1986-09-28
1987	1987-04-20	1987-09-05
1988	1988-05-14	1988-09-22
1989	1989-04-24	1989-10-13
1990	1990-06-12	1990-10-05
1991	1991-05-13	1991-09-15
1993	1993-06-16	1993-09-12
1994	1994-06-06	1994-09-30
1995	1995-06-07	1995-09-13
1996	1996-05-17	1996-09-05
1997	1997-05-18	1997-10-07
1998	1998-05-19	1998-09-30
1999	1999-06-05	1999-10-16
2000	2000-04-06	2000-09-19
2001	2001-04-28	2001-09-06
2002	2002-04-15	2002-10-02
2003	2003-05-31	2003-09-11
2004	2004-04-17	2004-09-15
2005	2005-05-11	2005-10-03
2006	2006-04-14	2006-10-04
2007	2007-04-30	2007-10-07
2008	2008-05-26	2008-09-03
2009	2009-06-18	2009-08-16
2010	2010-05-25	2010-10-09
2011	2011-04-04	2011-09-13
2012	2012-04-03	2012-09-13
2013	2013-05-15	2013-09-20
2014	2014-05-08	2014-09-05
2015	2015-04-02	2015-09-29
2016	2016-05-31	2016-10-18
2017	2017-05-16	2017-10-03
2018	2018-05-24	2018-10-04
2019	2019-04-22	2019-10-02
2020	2020-06-02	2020-10-10
2021	2021-04-27	2021-10-01
2022	2022-05-10	2022-10-22
2023	2023-04-05	2023-10-03
2024	2024-04-15	2024-10-12
2025	2025-05-11	2025-10-06
2026	2026-03-22	2026-10-13

Every Fixed Threshold

Fixed thresholds at Lamoni
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	98	90	1934	79
35 C (95 F): Days	91	53	1936	16
40 C (104 F): Days	12	18	1934	2
45 C (113 F): Days	1	1	1934	1
90 F (32.2 C): Days	98	76	1934	47
100 F (37.8 C): Days	43	33	1936	4
110 F (43.3 C): Days	3	3	1934	1
0 C (32 F): Ice days (max	98	68	1937	23
0 C (32 F): Frost days (min	95	157	1917	70
-10 C (14 F): Days with min	95	66	2008	24
-20 C (-4 F): Days with min	90	28	1936	5
-30 C (-22 F): Days with min	8	3	1899	1
20 C (68 F): Tropical nights (min	95	61	1983	55
25 C (77 F): Days with min	33	9	1936	3
10 mm (0.39 in): Days with 10 mm or more rain	97	47	1993	35
25 mm (0.98 in): Days with 25 mm or more rain	97	19	1987	13
50 mm (1.97 in): Days with 50 mm or more rain	82	5	1970	3
100 mm (3.94 in): Days with 100 mm or more rain	16	2	1932	2
10 cm (3.9 in): Days with 10 cm or more snowfall	59	5	1936	1
25 cm (9.8 in): Days with 25 cm or more snowfall	11	2	2009	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1898.

Download the Data

Data for Lamoni 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).

Lamoni Threshold Days by Year (USC00134585)

Key Facts for Lamoni Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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