Fenn Rs Threshold Days by Year (USC00103143)

16 fixed thresholds counted per year at Fenn Rs (USC00103143): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Fenn Rs Thresholds

Fenn Rs: days with a maximum temperature at or above 30 C (86 F) in 70 years, most in 1940 with 87.
Fenn Rs: days with a maximum temperature at or above 90 F (32.2 C) in 70 years, most in 2017 with 72.
Fenn Rs: days with 10 mm (0.39 in) or more of precipitation in 70 years, most in 1975 with 49.
Fenn Rs: days with a maximum temperature at or below 0 C (32 F) in 69 years, most in 1985 with 38.
16 fixed thresholds have at least one qualifying day at Fenn Rs.

Days at or above 30 C (86 F)

70 years with a qualifying day

Days per year at Fenn Rs with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 87 in 1940.

Days at or above 30 C (86 F) per year at Fenn Rs
Year	Days	Decade average
1940	87	64.1
1941	57	64.1
1942	62	64.1
1944	63	64.1
1945	70	64.1
1946	54	64.1
1947	56	64.1
1951	62	66.6
1952	71	66.6
1953	66	66.6
1954	50	66.6
1955	64	66.6
1956	60	66.6
1957	77	66.6
1958	83	66.6
1960	63	59.9
1961	79	59.9
1963	64	59.9
1964	19	59.9
1965	43	59.9
1966	72	59.9
1967	86	59.9
1968	50	59.9
1969	63	59.9
1970	70	55.3
1971	53	55.3
1972	61	55.3
1973	66	55.3
1974	61	55.3
1975	40	55.3
1976	33	55.3
1977	59	55.3
1978	39	55.3
1979	71	55.3
1980	33	54.4
1981	63	54.4
1982	51	54.4
1983	56	54.4
1984	63	54.4
1985	53	54.4
1986	66	54.4
1987	63	54.4
1988	62	54.4
1989	34	54.4
1991	60	57.4
1992	67	57.4
1993	43	57.4
1994	86	57.4
1996	58	57.4
1998	50	57.4
1999	38	57.4
2003	73	62.7
2004	54	62.7
2005	54	62.7
2006	67	62.7
2007	72	62.7
2008	55	62.7
2009	64	62.7
2010	45	64.9
2011	60	64.9
2012	58	64.9
2013	83	64.9
2014	57	64.9
2015	71	64.9
2016	61	64.9
2017	84	64.9
2018	65	64.9
2023	68	71
2025	77	71
2026	68	71

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

First to last qualifying date each year at Fenn Rs
Year	First date	Last date
1940	1940-05-09	1940-09-26
1941	1941-05-11	1941-08-22
1942	1942-05-21	1942-09-06
1944	1944-05-05	1944-09-12
1945	1945-05-02	1945-09-14
1946	1946-04-25	1946-09-02
1947	1947-05-03	1947-09-04
1951	1951-05-22	1951-09-19
1952	1952-04-24	1952-09-25
1953	1953-05-05	1953-09-21
1954	1954-05-15	1954-09-02
1955	1955-06-09	1955-09-11
1956	1956-05-16	1956-09-19
1957	1957-04-29	1957-09-27
1958	1958-05-18	1958-09-12
1960	1960-05-11	1960-09-14
1961	1961-05-26	1961-09-05
1963	1963-05-21	1963-09-29
1964	1964-05-17	1964-08-23
1965	1965-06-09	1965-09-02
1966	1966-05-03	1966-09-22
1967	1967-05-22	1967-09-29
1968	1968-04-30	1968-09-11
1969	1969-05-12	1969-09-12
1970	1970-05-05	1970-09-04
1971	1971-05-12	1971-08-31
1972	1972-06-01	1972-09-09
1973	1973-05-14	1973-09-14
1974	1974-06-12	1974-09-08
1975	1975-05-15	1975-08-28
1976	1976-05-14	1976-09-06
1977	1977-04-24	1977-09-08
1978	1978-06-04	1978-09-04
1979	1979-05-16	1979-09-23
1980	1980-05-05	1980-09-10
1981	1981-05-01	1981-09-19
1982	1982-06-12	1982-09-10
1983	1983-05-24	1983-09-01
1984	1984-04-16	1984-09-06
1985	1985-05-18	1985-08-30
1986	1986-05-20	1986-09-06
1987	1987-04-28	1987-09-25
1988	1988-05-12	1988-09-07
1989	1989-05-10	1989-08-20
1991	1991-06-03	1991-10-02
1992	1992-04-30	1992-09-24
1993	1993-05-11	1993-10-01
1994	1994-04-18	1994-09-27
1996	1996-04-09	1996-09-13
1998	1998-06-30	1998-09-07
1999	1999-05-24	1999-08-31
2003	2003-05-24	2003-09-07
2004	2004-06-22	2004-09-01
2005	2005-05-28	2005-09-09
2006	2006-05-15	2006-09-13
2007	2007-05-09	2007-09-17
2008	2008-05-17	2008-08-30
2009	2009-05-18	2009-09-26
2010	2010-06-24	2010-08-27
2011	2011-06-06	2011-09-25
2012	2012-05-15	2012-09-07
2013	2013-05-07	2013-09-16
2014	2014-05-24	2014-09-25
2015	2015-05-30	2015-09-14
2016	2016-04-21	2016-10-01
2017	2017-05-05	2017-09-14
2018	2018-04-28	2018-09-10
2023	2023-04-30	2023-09-18
2025	2025-05-10	2025-09-21
2026	2026-05-11	2026-09-11

Every Fixed Threshold

Fixed thresholds at Fenn Rs
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	70	87	1940	68
35 C (95 F): Days	68	44	1967	8
40 C (104 F): Days	18	7	2015	2
90 F (32.2 C): Days	70	72	2017	44
100 F (37.8 C): Days	56	21	2015	1
110 F (43.3 C): Days	1	1	2015	1
0 C (32 F): Ice days (max	69	38	1985	1
0 C (32 F): Frost days (min	66	169	1970	53
-10 C (14 F): Days with min	57	24	1960	4
-20 C (-4 F): Days with min	14	8	1979	2
20 C (68 F): Tropical nights (min	1	1	1961	1
10 mm (0.39 in): Days with 10 mm or more rain	70	49	1975	43
25 mm (0.98 in): Days with 25 mm or more rain	68	12	1975	4
50 mm (1.97 in): Days with 50 mm or more rain	8	2	2010	1
10 cm (3.9 in): Days with 10 cm or more snowfall	65	10	1996	3
25 cm (9.8 in): Days with 25 cm or more snowfall	16	2	1957	2

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1940.

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Data for Fenn Rs 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).

Fenn Rs Threshold Days by Year (USC00103143)

Key Facts for Fenn Rs Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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