Intl Falls Intl AP Threshold Days by Year (USW00014918)

18 fixed thresholds counted per year at Intl Falls Intl AP (USW00014918): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Intl Falls Intl AP Thresholds

Intl Falls Intl AP: days with 10 mm (0.39 in) or more of precipitation in 91 years, most in 1949 with 31.
Intl Falls Intl AP: nights with a minimum temperature at or below 0 C (32 F) in 90 years, most in 2002 with 223.
Intl Falls Intl AP: nights with a minimum temperature at or below -10 C (14 F) in 90 years, most in 1950 with 130.
Intl Falls Intl AP: nights with a minimum temperature at or below -20 C (-4 F) in 90 years, most in 1978 with 83.
18 fixed thresholds have at least one qualifying day at Intl Falls Intl AP.

Days at or above 30 C (86 F)

86 years with a qualifying day

Days per year at Intl Falls Intl AP with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 43 in 1921.

Days at or above 30 C (86 F) per year at Intl Falls Intl AP
Year	Days	Decade average
1911	17	16
1912	17	16
1913	15	16
1914	15	16
1915	13	16
1919	19	16
1921	43	31.5
1922	20	31.5
1948	12	11.5
1949	11	11.5
1950	2	10.7
1951	6	10.7
1952	14	10.7
1953	12	10.7
1954	8	10.7
1955	24	10.7
1956	6	10.7
1957	12	10.7
1958	9	10.7
1959	14	10.7
1960	11	11
1961	22	11
1962	2	11
1963	13	11
1964	16	11
1965	7	11
1966	15	11
1967	6	11
1968	4	11
1969	14	11
1970	26	15.2
1971	9	15.2
1972	19	15.2
1973	22	15.2
1974	15	15.2
1975	16	15.2
1976	21	15.2
1977	10	15.2
1978	8	15.2
1979	6	15.2
1980	24	14.4
1981	8	14.4
1982	2	14.4
1983	17	14.4
1984	8	14.4
1986	10	14.4
1987	12	14.4
1988	30	14.4
1989	19	14.4
1990	10	9.4
1991	20	9.4
1992	3	9.4
1993	6	9.4
1994	4	9.4
1995	19	9.4
1996	12	9.4
1997	8	9.4
1998	5	9.4
1999	7	9.4
2000	1	8.9
2001	18	8.9
2002	16	8.9
2003	10	8.9
2004	3	8.9
2005	13	8.9
2006	11	8.9
2007	11	8.9
2008	4	8.9
2009	2	8.9
2010	10	9.2
2011	12	9.2
2012	15	9.2
2013	11	9.2
2014	7	9.2
2015	9	9.2
2016	3	9.2
2017	3	9.2
2018	13	9.2
2019	9	9.2
2020	12	12
2021	26	12
2022	5	12
2023	13	12
2024	9	12
2025	9	12
2026	10	12

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

First to last qualifying date each year at Intl Falls Intl AP
Year	First date	Last date
1911	1911-05-17	1911-08-14
1912	1912-05-26	1912-10-02
1913	1913-04-30	1913-09-06
1914	1914-06-07	1914-09-19
1915	1915-08-06	1915-09-07
1919	1919-05-25	1919-08-19
1921	1921-05-20	1921-09-02
1922	1922-06-04	1922-09-05
1948	1948-06-02	1948-09-04
1949	1949-06-11	1949-08-24
1950	1950-05-23	1950-06-22
1951	1951-07-23	1951-07-29
1952	1952-04-27	1952-09-27
1953	1953-05-07	1953-10-02
1954	1954-07-11	1954-08-24
1955	1955-05-21	1955-09-03
1956	1956-06-08	1956-06-21
1957	1957-04-30	1957-08-10
1958	1958-06-28	1958-09-23
1959	1959-05-25	1959-08-24
1960	1960-07-08	1960-09-03
1961	1961-06-04	1961-08-29
1962	1962-08-02	1962-08-27
1963	1963-06-24	1963-10-05
1964	1964-05-21	1964-08-05
1965	1965-07-22	1965-08-13
1966	1966-06-21	1966-08-27
1967	1967-07-10	1967-08-24
1968	1968-07-06	1968-08-05
1969	1969-05-27	1969-08-29
1970	1970-06-06	1970-09-19
1971	1971-06-03	1971-09-03
1972	1972-05-16	1972-08-30
1973	1973-06-02	1973-08-28
1974	1974-06-28	1974-08-19
1975	1975-05-20	1975-08-24
1976	1976-06-02	1976-09-11
1977	1977-05-13	1977-07-23
1978	1978-06-10	1978-09-05
1979	1979-07-09	1979-07-21
1980	1980-04-21	1980-09-07
1981	1981-07-05	1981-08-13
1982	1982-07-05	1982-07-20
1983	1983-06-11	1983-09-02
1984	1984-07-22	1984-08-28
1986	1986-05-27	1986-08-15
1987	1987-04-18	1987-08-02
1988	1988-05-28	1988-08-15
1989	1989-06-19	1989-08-11
1990	1990-06-10	1990-09-11
1991	1991-05-12	1991-09-02
1992	1992-05-20	1992-06-11
1993	1993-06-11	1993-08-25
1994	1994-05-19	1994-08-16
1995	1995-06-04	1995-09-04
1996	1996-06-09	1996-08-17
1997	1997-06-27	1997-08-07
1998	1998-05-18	1998-08-12
1999	1999-05-29	1999-08-26
2000	2000-07-30	2000-07-30
2001	2001-06-24	2001-09-06
2002	2002-05-30	2002-09-08
2003	2003-07-02	2003-09-07
2004	2004-07-19	2004-07-21
2005	2005-06-19	2005-09-11
2006	2006-05-28	2006-08-05
2007	2007-06-12	2007-09-05
2008	2008-07-05	2008-09-01
2009	2009-08-12	2009-08-13
2010	2010-05-25	2010-08-30
2011	2011-07-04	2011-09-10
2012	2012-05-18	2012-08-29
2013	2013-06-25	2013-08-28
2014	2014-05-24	2014-07-21
2015	2015-07-10	2015-10-11
2016	2016-05-05	2016-07-20
2017	2017-07-29	2017-07-31
2018	2018-05-25	2018-09-16
2019	2019-06-07	2019-08-04
2020	2020-06-16	2020-07-25
2021	2021-05-17	2021-08-20
2022	2022-06-19	2022-09-01
2023	2023-06-01	2023-10-02
2024	2024-07-11	2024-08-26
2025	2025-05-11	2025-08-07
2026	2026-05-25	2026-07-29

Every Fixed Threshold

Fixed thresholds at Intl Falls Intl AP
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	86	43	1921	10
35 C (95 F): Days	25	8	1921	2
90 F (32.2 C): Days	67	18	1921	5
100 F (37.8 C): Days	1	1	1912	1
0 C (32 F): Ice days (max	87	133	1955	63
0 C (32 F): Frost days (min	90	223	2002	133
-10 C (14 F): Days with min	90	130	1950	62
-20 C (-4 F): Days with min	90	83	1978	33
-30 C (-22 F): Days with min	89	30	1948	7
-40 C (-40 F): Days with min	28	6	1966	2
20 C (68 F): Tropical nights (min	44	6	1983	2
25 C (77 F): Days with min	1	1	2001	1
10 mm (0.39 in): Days with 10 mm or more rain	91	31	1949	13
25 mm (0.98 in): Days with 25 mm or more rain	89	9	2014	2
50 mm (1.97 in): Days with 50 mm or more rain	43	3	1919	2
100 mm (3.94 in): Days with 100 mm or more rain	2	1	1966	1
10 cm (3.9 in): Days with 10 cm or more snowfall	74	11	1992	3
25 cm (9.8 in): Days with 25 cm or more snowfall	12	1	1950	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1911.

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Data for Intl Falls Intl 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).

Intl Falls Intl AP Threshold Days by Year (USW00014918)

Key Facts for Intl Falls Intl AP Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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