Holly Hill Threshold Days by Year (USC00384197)

14 fixed thresholds counted per year at Holly Hill (USC00384197): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Holly Hill Thresholds

Holly Hill: days with 10 mm (0.39 in) or more of precipitation in 31 years, most in 1959 with 51.
Holly Hill: days with 25 mm (0.98 in) or more of precipitation in 31 years, most in 1964 with 25.
Holly Hill: days with 50 mm (1.97 in) or more of precipitation in 30 years, most in 1964 with 9.
Holly Hill: days with a maximum temperature at or above 30 C (86 F) in 29 years, most in 1962 with 138.
14 fixed thresholds have at least one qualifying day at Holly Hill.

Days at or above 30 C (86 F)

29 years with a qualifying day

Days per year at Holly Hill with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 138 in 1962.

Days at or above 30 C (86 F) per year at Holly Hill
Year	Days	Decade average
1958	129	130
1959	131	130
1960	128	105.6
1961	113	105.6
1962	138	105.6
1963	115	105.6
1964	102	105.6
1965	122	105.6
1966	81	105.6
1967	91	105.6
1969	60	105.6
1970	86	81
1971	59	81
1972	69	81
1973	73	81
1974	92	81
1975	106	81
1976	63	81
1979	100	81
1980	135	125.6
1981	131	125.6
1982	118	125.6
1983	121	125.6
1984	128	125.6
1985	134	125.6
1986	136	125.6
1987	119	125.6
1989	108	125.6
1997	123	123

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

First to last qualifying date each year at Holly Hill
Year	First date	Last date
1958	1958-04-24	1958-11-16
1959	1959-04-08	1959-10-11
1960	1960-04-17	1960-10-19
1961	1961-04-23	1961-11-04
1962	1962-02-28	1962-10-13
1963	1963-03-18	1963-10-12
1964	1964-04-20	1964-10-01
1965	1965-04-07	1965-10-04
1966	1966-04-02	1966-10-06
1967	1967-03-13	1967-10-07
1969	1969-04-03	1969-08-26
1970	1970-04-21	1970-09-27
1971	1971-04-13	1971-09-21
1972	1972-04-13	1972-10-17
1973	1973-03-14	1973-10-05
1974	1974-03-08	1974-09-22
1975	1975-04-26	1975-09-21
1976	1976-04-18	1976-09-27
1979	1979-05-04	1979-10-22
1980	1980-04-22	1980-10-17
1981	1981-03-31	1981-10-07
1982	1982-03-13	1982-10-07
1983	1983-04-06	1983-10-13
1984	1984-03-19	1984-10-30
1985	1985-03-14	1985-10-16
1986	1986-03-31	1986-10-06
1987	1987-04-13	1987-09-20
1989	1989-04-19	1989-10-06
1997	1997-02-27	1997-10-14

Every Fixed Threshold

Fixed thresholds at Holly Hill
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	29	138	1962	123
35 C (95 F): Days	26	61	1980	24
40 C (104 F): Days	3	5	1986	5
90 F (32.2 C): Days	29	107	1980	82
100 F (37.8 C): Days	12	20	1986	3
0 C (32 F): Ice days (max	9	3	1970	2
0 C (32 F): Frost days (min	29	65	1960	51
-10 C (14 F): Days with min	16	3	1966	1
20 C (68 F): Tropical nights (min	29	117	1971	84
25 C (77 F): Days with min	9	4	1983	2
10 mm (0.39 in): Days with 10 mm or more rain	31	51	1959	44
25 mm (0.98 in): Days with 25 mm or more rain	31	25	1964	24
50 mm (1.97 in): Days with 50 mm or more rain	30	9	1964	4
100 mm (3.94 in): Days with 100 mm or more rain	11	4	1973	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1958.

Download the Data

Data for Holly Hill 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).

Holly Hill Threshold Days by Year (USC00384197)

Key Facts for Holly Hill Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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