Basel-Mulhouse Threshold Days by Year

13 fixed thresholds counted per year at Basel-Mulhouse (FRE00106192): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Basel-Mulhouse Thresholds

Basel-Mulhouse: nights with a minimum temperature at or below 0 C (32 F) in 80 years, most in 1973 with 111.
Basel-Mulhouse: days with 10 mm (0.39 in) or more of precipitation in 80 years, most in 1999 with 35.
Basel-Mulhouse: days with a maximum temperature at or above 30 C (86 F) in 79 years, most in 2003 with 52.
Basel-Mulhouse: days with a maximum temperature at or below 0 C (32 F) in 78 years, most in 1963 with 49.
13 fixed thresholds have at least one qualifying day at Basel-Mulhouse.

Days at or above 30 C (86 F)

79 years with a qualifying day

Days per year at Basel-Mulhouse with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 52 in 2003.

Days at or above 30 C (86 F) per year at Basel-Mulhouse
Year	Days	Decade average
1947	41	22.7
1948	4	22.7
1949	23	22.7
1950	13	7.9
1951	1	7.9
1952	22	7.9
1953	12	7.9
1954	5	7.9
1955	2	7.9
1956	1	7.9
1957	9	7.9
1958	4	7.9
1959	10	7.9
1960	2	8.6
1961	12	8.6
1962	9	8.6
1963	4	8.6
1964	18	8.6
1965	5	8.6
1966	7	8.6
1967	14	8.6
1968	6	8.6
1969	9	8.6
1970	4	9.7
1971	14	9.7
1972	4	9.7
1973	14	9.7
1974	8	9.7
1975	11	9.7
1976	25	9.7
1978	3	9.7
1979	4	9.7
1980	3	9.7
1981	4	9.7
1982	11	9.7
1983	19	9.7
1984	9	9.7
1985	12	9.7
1986	9	9.7
1987	14	9.7
1988	7	9.7
1989	9	9.7
1990	13	13.7
1991	13	13.7
1992	20	13.7
1993	9	13.7
1994	25	13.7
1995	13	13.7
1996	7	13.7
1997	11	13.7
1998	17	13.7
1999	9	13.7
2000	16	19.9
2001	14	19.9
2002	12	19.9
2003	52	19.9
2004	19	19.9
2005	23	19.9
2006	25	19.9
2007	8	19.9
2008	9	19.9
2009	21	19.9
2010	20	22.4
2011	16	22.4
2012	13	22.4
2013	16	22.4
2014	10	22.4
2015	31	22.4
2016	19	22.4
2017	32	22.4
2018	39	22.4
2019	28	22.4
2020	27	32.9
2021	8	32.9
2022	41	32.9
2023	32	32.9
2024	31	32.9
2025	28	32.9
2026	63	32.9

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

First to last qualifying date each year at Basel-Mulhouse
Year	First date	Last date
1947	1947-05-31	1947-09-18
1948	1948-06-09	1948-07-21
1949	1949-07-05	1949-09-06
1950	1950-06-08	1950-08-23
1951	1951-07-31	1951-07-31
1952	1952-06-29	1952-08-30
1953	1953-05-16	1953-09-02
1954	1954-06-20	1954-08-06
1955	1955-07-17	1955-07-18
1956	1956-07-09	1956-07-09
1957	1957-06-30	1957-07-08
1958	1958-07-15	1958-08-11
1959	1959-07-05	1959-07-27
1960	1960-06-19	1960-08-25
1961	1961-06-25	1961-09-17
1962	1962-06-23	1962-09-03
1963	1963-07-22	1963-08-02
1964	1964-06-12	1964-08-28
1965	1965-06-25	1965-08-07
1966	1966-06-10	1966-08-13
1967	1967-06-23	1967-08-16
1968	1968-04-21	1968-07-10
1969	1969-05-13	1969-08-06
1970	1970-07-28	1970-08-06
1971	1971-07-09	1971-08-19
1972	1972-07-08	1972-08-13
1973	1973-06-27	1973-09-04
1974	1974-07-12	1974-08-17
1975	1975-07-08	1975-08-08
1976	1976-06-09	1976-07-18
1978	1978-07-28	1978-07-30
1979	1979-07-27	1979-08-14
1980	1980-07-25	1980-08-03
1981	1981-06-15	1981-08-06
1982	1982-06-04	1982-09-05
1983	1983-06-05	1983-08-27
1984	1984-07-08	1984-09-02
1985	1985-07-13	1985-10-03
1986	1986-06-22	1986-08-03
1987	1987-06-29	1987-09-21
1988	1988-07-22	1988-08-19
1989	1989-06-21	1989-08-21
1990	1990-06-26	1990-08-24
1991	1991-07-05	1991-08-22
1992	1992-07-19	1992-08-28
1993	1993-06-09	1993-08-22
1994	1994-06-24	1994-08-22
1995	1995-07-08	1995-08-05
1996	1996-06-06	1996-08-10
1997	1997-06-07	1997-08-25
1998	1998-05-12	1998-08-17
1999	1999-05-27	1999-09-13
2000	2000-06-02	2000-08-26
2001	2001-06-26	2001-08-27
2002	2002-05-17	2002-08-19
2003	2003-06-04	2003-09-20
2004	2004-06-08	2004-08-18
2005	2005-05-01	2005-09-08
2006	2006-06-13	2006-07-30
2007	2007-05-25	2007-08-15
2008	2008-06-22	2008-08-07
2009	2009-05-20	2009-09-01
2010	2010-06-10	2010-08-26
2011	2011-05-26	2011-09-10
2012	2012-05-11	2012-08-21
2013	2013-06-17	2013-09-06
2014	2014-06-07	2014-07-19
2015	2015-05-12	2015-08-31
2016	2016-06-23	2016-09-14
2017	2017-05-27	2017-08-30
2018	2018-06-20	2018-09-18
2019	2019-06-02	2019-08-31
2020	2020-06-24	2020-09-16
2021	2021-06-16	2021-08-15
2022	2022-05-19	2022-08-29
2023	2023-06-12	2023-10-13
2024	2024-06-18	2024-09-03
2025	2025-05-30	2025-09-20
2026	2026-05-24	2026-08-27

Every Fixed Threshold

Fixed thresholds at Basel-Mulhouse
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	79	52	2003	63
35 C (95 F): Days	36	15	2003	23
40 C (104 F): Days	1	0	n/a	2
90 F (32.2 C): Days	65	27	1947	46
100 F (37.8 C): Days	7	5	2003	8
0 C (32 F): Ice days (max	78	49	1963	2
0 C (32 F): Frost days (min	80	111	1973	35
-10 C (14 F): Days with min	60	36	1963	3
-20 C (-4 F): Days with min	10	5	1985	1
20 C (68 F): Tropical nights (min	32	5	2017	5
10 mm (0.39 in): Days with 10 mm or more rain	80	35	1999	10
25 mm (0.98 in): Days with 25 mm or more rain	67	7	1995	4
50 mm (1.97 in): Days with 50 mm or more rain	6	1	1982	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1947.

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Data for Basel-Mulhouse 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 2026-10-13 (13 October 2026). Threshold counts are computed by this site.

Data as of 2026-10-13. Last revised 13 October 2026 (2026-10-13).

Basel-Mulhouse Threshold Days by Year

Key Facts for Basel-Mulhouse Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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