Swea City 5N Threshold Days by Year (USC00138026)

18 fixed thresholds counted per year at Swea City 5N (USC00138026): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Swea City 5N Thresholds

Swea City 5N: days with 10 mm (0.39 in) or more of precipitation in 55 years, most in 1993 with 39.
Swea City 5N: days with 25 mm (0.98 in) or more of precipitation in 55 years, most in 1973 with 13.
Swea City 5N: days with 10 cm (3.9 in) or more of snowfall in 52 years, most in 1969 with 8.
Swea City 5N: days with a maximum temperature at or above 30 C (86 F) in 47 years, most in 1955 with 62.
18 fixed thresholds have at least one qualifying day at Swea City 5N.

Days at or above 30 C (86 F)

47 years with a qualifying day

Days per year at Swea City 5N with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 62 in 1955.

Days at or above 30 C (86 F) per year at Swea City 5N
Year	Days	Decade average
1955	62	46.6
1956	56	46.6
1957	37	46.6
1958	31	46.6
1959	47	46.6
1960	32	28.6
1961	29	28.6
1962	20	28.6
1963	27	28.6
1964	43	28.6
1968	24	28.6
1969	25	28.6
1970	52	39
1971	33	39
1972	34	39
1973	29	39
1974	31	39
1975	51	39
1976	50	39
1978	42	39
1979	29	39
1980	60	43.1
1981	29	43.1
1982	22	43.1
1983	60	43.1
1984	37	43.1
1988	58	43.1
1989	36	43.1
1990	36	24.8
1991	31	24.8
1992	11	24.8
1993	11	24.8
1994	18	24.8
1995	31	24.8
1996	20	24.8
1997	24	24.8
1999	41	24.8
2000	26	35
2001	62	35
2003	23	35
2005	29	35
2018	21	17
2019	13	17
2020	27	23.8
2021	26	23.8
2022	23	23.8
2026	19	23.8

For each year, a bar from the first to the last day at Swea City 5N meeting 30 C (86 F).

First to last qualifying date each year at Swea City 5N
Year	First date	Last date
1955	1955-05-02	1955-10-11
1956	1956-05-12	1956-10-12
1957	1957-06-04	1957-08-31
1958	1958-05-11	1958-10-15
1959	1959-05-01	1959-09-08
1960	1960-04-22	1960-09-07
1961	1961-05-31	1961-09-10
1962	1962-05-04	1962-09-12
1963	1963-06-04	1963-10-06
1964	1964-04-16	1964-09-09
1968	1968-04-12	1968-08-24
1969	1969-05-28	1969-09-12
1970	1970-04-27	1970-09-21
1971	1971-05-10	1971-10-01
1972	1972-05-18	1972-09-20
1973	1973-06-08	1973-08-31
1974	1974-05-29	1974-09-27
1975	1975-05-20	1975-10-14
1976	1976-06-06	1976-10-02
1978	1978-05-19	1978-09-12
1979	1979-05-17	1979-09-05
1980	1980-04-20	1980-09-19
1981	1981-04-27	1981-09-13
1982	1982-05-04	1982-08-19
1983	1983-05-27	1983-09-27
1984	1984-05-21	1984-09-21
1988	1988-05-12	1988-09-18
1989	1989-05-23	1989-08-31
1990	1990-05-07	1990-09-26
1991	1991-04-06	1991-08-30
1992	1992-04-30	1992-10-02
1993	1993-06-11	1993-10-07
1994	1994-04-18	1994-09-14
1995	1995-06-16	1995-10-12
1996	1996-05-17	1996-08-07
1997	1997-06-15	1997-10-06
1999	1999-05-29	1999-09-28
2000	2000-05-05	2000-10-01
2001	2001-05-10	2001-10-03
2003	2003-04-15	2003-10-20
2005	2005-06-07	2005-10-04
2018	2018-05-25	2018-09-21
2019	2019-06-05	2019-10-01
2020	2020-05-02	2020-09-26
2021	2021-05-02	2021-09-27
2022	2022-05-10	2022-09-21
2026	2026-03-31	2026-07-28

Every Fixed Threshold

Fixed thresholds at Swea City 5N
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	47	62	1955	19
35 C (95 F): Days	37	18	1955	4
40 C (104 F): Days	1	1	1955	1
90 F (32.2 C): Days	46	37	1955	2
100 F (37.8 C): Days	6	5	1955	1
0 C (32 F): Ice days (max	47	97	1978	38
0 C (32 F): Frost days (min	46	188	2022	103
-10 C (14 F): Days with min	46	90	1955	38
-20 C (-4 F): Days with min	46	38	1970	11
-30 C (-22 F): Days with min	25	7	1983	2
20 C (68 F): Tropical nights (min	46	30	1983	8
25 C (77 F): Days with min	5	3	1983	1
10 mm (0.39 in): Days with 10 mm or more rain	55	39	1993	12
25 mm (0.98 in): Days with 25 mm or more rain	55	13	1973	1
50 mm (1.97 in): Days with 50 mm or more rain	39	4	1981	2
100 mm (3.94 in): Days with 100 mm or more rain	5	1	1962	1
10 cm (3.9 in): Days with 10 cm or more snowfall	52	8	1969	1
25 cm (9.8 in): Days with 25 cm or more snowfall	7	2	1961	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1955.

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Data for Swea City 5N 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).

Swea City 5N Threshold Days by Year (USC00138026)

Key Facts for Swea City 5N Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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