Bernheim Forest Threshold Days by Year (USC00150630)

18 fixed thresholds counted per year at Bernheim Forest (USC00150630): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Bernheim Forest Thresholds

Bernheim Forest: days with 10 mm (0.39 in) or more of precipitation in 41 years, most in 2018 with 57.
Bernheim Forest: days with 25 mm (0.98 in) or more of precipitation in 41 years, most in 2018 with 30.
Bernheim Forest: days with a maximum temperature at or above 30 C (86 F) in 38 years, most in 1991 with 115.
Bernheim Forest: days with a maximum temperature at or above 90 F (32.2 C) in 38 years, most in 1991 with 80.
18 fixed thresholds have at least one qualifying day at Bernheim Forest.

Days at or above 30 C (86 F)

38 years with a qualifying day

Days per year at Bernheim Forest with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 115 in 1991.

Days at or above 30 C (86 F) per year at Bernheim Forest
Year	Days	Decade average
1971	80	72.6
1972	77	72.6
1973	81	72.6
1974	57	72.6
1975	87	72.6
1976	58	72.6
1978	79	72.6
1979	62	72.6
1980	103	86.8
1981	72	86.8
1982	67	86.8
1984	90	86.8
1985	77	86.8
1986	96	86.8
1987	112	86.8
1988	95	86.8
1989	69	86.8
1990	80	84.4
1991	115	84.4
1992	49	84.4
1993	89	84.4
1994	91	84.4
1995	89	84.4
1996	79	84.4
1997	68	84.4
1998	96	84.4
1999	88	84.4
2000	68	77.5
2001	86	77.5
2002	93	77.5
2004	47	77.5
2006	68	77.5
2007	103	77.5
2014	57	67.8
2015	52	67.8
2016	85	67.8
2017	57	67.8
2018	88	67.8

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

First to last qualifying date each year at Bernheim Forest
Year	First date	Last date
1971	1971-05-17	1971-10-04
1972	1972-05-22	1972-09-22
1973	1973-06-03	1973-10-10
1974	1974-05-17	1974-09-12
1975	1975-04-28	1975-10-14
1976	1976-04-20	1976-09-15
1978	1978-04-09	1978-09-22
1979	1979-05-08	1979-09-13
1980	1980-04-22	1980-10-11
1981	1981-04-27	1981-10-01
1982	1982-05-05	1982-10-07
1984	1984-05-25	1984-09-23
1985	1985-04-18	1985-10-13
1986	1986-04-25	1986-10-03
1987	1987-04-21	1987-09-28
1988	1988-04-06	1988-09-23
1989	1989-04-25	1989-10-14
1990	1990-04-24	1990-09-30
1991	1991-05-14	1991-10-04
1992	1992-04-24	1992-09-17
1993	1993-05-08	1993-09-15
1994	1994-04-27	1994-10-07
1995	1995-05-09	1995-09-15
1996	1996-05-10	1996-09-11
1997	1997-05-18	1997-10-08
1998	1998-05-13	1998-10-02
1999	1999-05-05	1999-10-16
2000	2000-05-08	2000-10-06
2001	2001-04-07	2001-09-24
2002	2002-04-18	2002-10-03
2004	2004-05-08	2004-09-24
2006	2006-04-14	2006-10-05
2007	2007-04-30	2007-10-09
2014	2014-05-05	2014-10-03
2015	2015-05-07	2015-08-23
2016	2016-04-21	2016-11-03
2017	2017-05-17	2017-09-29
2018	2018-05-10	2018-10-09

Every Fixed Threshold

Fixed thresholds at Bernheim Forest
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	38	115	1991	88
35 C (95 F): Days	33	37	1988	1
40 C (104 F): Days	3	3	1988	2
90 F (32.2 C): Days	38	80	1991	29
100 F (37.8 C): Days	8	14	1988	2
0 C (32 F): Ice days (max	38	25	1978	10
0 C (32 F): Frost days (min	37	125	1976	83
-10 C (14 F): Days with min	37	33	1978	17
-20 C (-4 F): Days with min	14	5	1978	2
-30 C (-22 F): Days with min	1	1	1994	1
20 C (68 F): Tropical nights (min	37	70	1991	58
25 C (77 F): Days with min	5	1	1989	1
10 mm (0.39 in): Days with 10 mm or more rain	41	57	2018	59
25 mm (0.98 in): Days with 25 mm or more rain	41	30	2018	30
50 mm (1.97 in): Days with 50 mm or more rain	36	9	2007	7
100 mm (3.94 in): Days with 100 mm or more rain	6	3	1979	1
10 cm (3.9 in): Days with 10 cm or more snowfall	9	3	1978	1
25 cm (9.8 in): Days with 25 cm or more snowfall	1	1	1978	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1971.

Download the Data

Data for Bernheim Forest 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Bernheim Forest Threshold Days by Year (USC00150630)

Key Facts for Bernheim Forest Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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