Altenbern Threshold Days by Year (USC00050214)

17 fixed thresholds counted per year at Altenbern (USC00050214): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Altenbern Thresholds

Altenbern: days with 10 mm (0.39 in) or more of precipitation in 79 years, most in 1957 with 22.
Altenbern: days with 10 cm (3.9 in) or more of snowfall in 68 years, most in 1948 with 12.
Altenbern: days with a maximum temperature at or above 30 C (86 F) in 67 years, most in 2018 with 92.
Altenbern: days with a maximum temperature at or above 90 F (32.2 C) in 67 years, most in 2002 with 69.
17 fixed thresholds have at least one qualifying day at Altenbern.

Days at or above 30 C (86 F)

67 years with a qualifying day

Days per year at Altenbern with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 92 in 2018.

Days at or above 30 C (86 F) per year at Altenbern
Year	Days	Decade average
1959	79	79
1960	82	61
1961	71	61
1962	77	61
1963	67	61
1964	68	61
1965	39	61
1966	60	61
1967	44	61
1968	42	61
1969	60	61
1970	53	55.3
1971	63	55.3
1972	51	55.3
1973	43	55.3
1974	64	55.3
1975	39	55.3
1976	44	55.3
1977	69	55.3
1978	65	55.3
1979	62	55.3
1980	58	51.1
1981	57	51.1
1982	44	51.1
1983	36	51.1
1984	46	51.1
1985	55	51.1
1986	42	51.1
1987	50	51.1
1988	71	51.1
1989	52	51.1
1990	79	58.7
1991	54	58.7
1992	46	58.7
1993	45	58.7
1994	78	58.7
1995	54	58.7
1996	80	58.7
1997	52	58.7
1998	55	58.7
1999	44	58.7
2000	77	69.7
2001	77	69.7
2002	91	69.7
2003	82	69.7
2004	65	69.7
2005	61	69.7
2006	49	69.7
2007	78	69.7
2008	65	69.7
2009	52	69.7
2010	61	69.3
2011	67	69.3
2012	80	69.3
2013	79	69.3
2014	51	69.3
2015	57	69.3
2016	62	69.3
2017	75	69.3
2018	92	69.3
2019	69	69.3
2020	73	72.8
2021	81	72.8
2022	76	72.8
2023	65	72.8
2024	84	72.8
2026	58	72.8

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

First to last qualifying date each year at Altenbern
Year	First date	Last date
1959	1959-05-12	1959-09-14
1960	1960-05-11	1960-09-12
1961	1961-06-08	1961-08-29
1962	1962-06-10	1962-09-19
1963	1963-06-12	1963-10-01
1964	1964-05-16	1964-09-13
1965	1965-06-21	1965-08-28
1966	1966-06-14	1966-09-23
1967	1967-05-22	1967-09-05
1968	1968-05-29	1968-09-10
1969	1969-05-26	1969-09-07
1970	1970-06-20	1970-08-31
1971	1971-06-14	1971-09-12
1972	1972-06-02	1972-08-27
1973	1973-06-08	1973-08-27
1974	1974-05-27	1974-09-11
1975	1975-06-27	1975-09-01
1976	1976-06-07	1976-09-05
1977	1977-05-31	1977-09-08
1978	1978-05-20	1978-09-07
1979	1979-06-12	1979-09-11
1980	1980-06-10	1980-09-05
1981	1981-06-06	1981-08-28
1982	1982-06-25	1982-09-04
1983	1983-06-18	1983-09-07
1984	1984-05-23	1984-09-10
1985	1985-06-06	1985-09-01
1986	1986-06-05	1986-09-06
1987	1987-06-04	1987-09-01
1988	1988-05-16	1988-09-09
1989	1989-06-15	1989-09-29
1990	1990-06-04	1990-09-15
1991	1991-06-09	1991-09-04
1992	1992-06-10	1992-09-11
1993	1993-06-14	1993-08-24
1994	1994-05-30	1994-09-08
1995	1995-06-12	1995-09-16
1996	1996-05-12	1996-09-10
1997	1997-06-01	1997-09-02
1998	1998-06-02	1998-09-07
1999	1999-06-16	1999-08-30
2000	2000-05-23	2000-09-17
2001	2001-06-01	2001-09-30
2002	2002-05-18	2002-09-05
2003	2003-05-22	2003-10-01
2004	2004-06-02	2004-09-17
2005	2005-06-15	2005-09-20
2006	2006-05-25	2006-09-05
2007	2007-06-10	2007-09-13
2008	2008-05-19	2008-08-30
2009	2009-05-18	2009-09-11
2010	2010-05-28	2010-09-30
2011	2011-06-05	2011-09-05
2012	2012-05-22	2012-09-06
2013	2013-06-07	2013-09-07
2014	2014-05-28	2014-09-25
2015	2015-06-15	2015-09-25
2016	2016-06-04	2016-09-20
2017	2017-06-04	2017-09-13
2018	2018-05-10	2018-09-18
2019	2019-06-27	2019-09-07
2020	2020-05-28	2020-09-07
2021	2021-06-03	2021-09-27
2022	2022-06-08	2022-09-12
2023	2023-06-22	2023-09-09
2024	2024-06-01	2024-10-01
2026	2026-05-12	2026-07-31

Every Fixed Threshold

Fixed thresholds at Altenbern
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	67	92	2018	58
35 C (95 F): Days	63	36	2002	21
40 C (104 F): Days	1	1	1989	1
90 F (32.2 C): Days	67	69	2002	40
100 F (37.8 C): Days	12	11	2002	4
0 C (32 F): Ice days (max	67	42	1974	2
0 C (32 F): Frost days (min	67	216	1964	88
-10 C (14 F): Days with min	67	95	1964	14
-20 C (-4 F): Days with min	58	20	2013	1
-30 C (-22 F): Days with min	5	2	1963	1
20 C (68 F): Tropical nights (min	8	2	1989	1
25 C (77 F): Days with min	1	1	1990	1
10 mm (0.39 in): Days with 10 mm or more rain	79	22	1957	5
25 mm (0.98 in): Days with 25 mm or more rain	41	4	1954	2
10 cm (3.9 in): Days with 10 cm or more snowfall	68	12	1948	1
25 cm (9.8 in): Days with 25 cm or more snowfall	25	2	1949	1
50 cm (19.7 in): Days with 50 cm or more snowfall	1	1	1989	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1959.

Download the Data

Data for Altenbern 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).

Altenbern Threshold Days by Year (USC00050214)

Key Facts for Altenbern Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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