Hillside 4 NNE Threshold Days by Year (USC00024053)

17 fixed thresholds counted per year at Hillside 4 NNE (USC00024053): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Hillside 4 NNE Thresholds

Hillside 4 NNE: days with 10 mm (0.39 in) or more of precipitation in 42 years, most in 1969 with 20.
Hillside 4 NNE: days with 25 mm (0.98 in) or more of precipitation in 41 years, most in 1993 with 9.
Hillside 4 NNE: days with a maximum temperature at or above 30 C (86 F) in 39 years, most in 1978 with 147.
Hillside 4 NNE: days with a maximum temperature at or above 35 C (95 F) in 39 years, most in 1960 with 84.
17 fixed thresholds have at least one qualifying day at Hillside 4 NNE.

Days at or above 30 C (86 F)

39 years with a qualifying day

Days per year at Hillside 4 NNE with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 147 in 1978.

Days at or above 30 C (86 F) per year at Hillside 4 NNE
Year	Days	Decade average
1955	127	130.2
1956	142	130.2
1957	122	130.2
1958	138	130.2
1959	122	130.2
1960	136	128.9
1961	126	128.9
1962	131	128.9
1966	127	128.9
1967	130	128.9
1968	119	128.9
1969	133	128.9
1970	112	128.3
1971	109	128.3
1972	128	128.3
1973	135	128.3
1974	139	128.3
1975	138	128.3
1976	120	128.3
1977	122	128.3
1978	147	128.3
1979	133	128.3
1980	137	126.4
1981	130	126.4
1982	109	126.4
1983	115	126.4
1984	138	126.4
1985	127	126.4
1986	106	126.4
1988	134	126.4
1989	142	126.4
1990	113	120.5
1991	128	120.5
1992	89	120.5
1993	112	120.5
1994	134	120.5
1995	124	120.5
1996	123	120.5
1997	141	120.5

For each year, a bar from the first to the last day at Hillside 4 NNE meeting 30 C (86 F).

First to last qualifying date each year at Hillside 4 NNE
Year	First date	Last date
1955	1955-05-05	1955-10-20
1956	1956-03-23	1956-10-06
1957	1957-05-05	1957-10-10
1958	1958-04-19	1958-10-17
1959	1959-04-02	1959-10-26
1960	1960-04-20	1960-10-07
1961	1961-04-03	1961-10-16
1962	1962-04-13	1962-10-03
1966	1966-04-01	1966-10-31
1967	1967-05-08	1967-11-11
1968	1968-05-18	1968-10-30
1969	1969-04-21	1969-10-09
1970	1970-05-04	1970-09-26
1971	1971-03-29	1971-10-13
1972	1972-03-09	1972-10-02
1973	1973-05-09	1973-10-20
1974	1974-05-01	1974-10-20
1975	1975-05-10	1975-11-05
1976	1976-04-30	1976-10-10
1977	1977-04-23	1977-10-25
1978	1978-05-08	1978-10-19
1979	1979-05-13	1979-10-12
1980	1980-04-18	1980-11-05
1981	1981-04-25	1981-09-29
1982	1982-05-01	1982-10-16
1983	1983-05-21	1983-09-22
1984	1984-04-13	1984-10-09
1985	1985-04-06	1985-10-27
1986	1986-04-21	1986-09-07
1988	1988-03-26	1988-10-31
1989	1989-04-04	1989-10-13
1990	1990-04-12	1990-10-27
1991	1991-05-07	1991-10-20
1992	1992-04-25	1992-10-12
1993	1993-05-10	1993-10-25
1994	1994-04-16	1994-10-02
1995	1995-05-19	1995-10-20
1996	1996-04-23	1996-10-13
1997	1997-04-21	1997-10-15

Every Fixed Threshold

Fixed thresholds at Hillside 4 NNE
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	39	147	1978	141
35 C (95 F): Days	39	84	1960	58
40 C (104 F): Days	38	19	1974	2
45 C (113 F): Days	1	1	1995	1
90 F (32.2 C): Days	39	127	1978	116
100 F (37.8 C): Days	38	45	1974	16
110 F (43.3 C): Days	7	3	1994	1
0 C (32 F): Ice days (max	1	1	1978	1
0 C (32 F): Frost days (min	38	174	1975	118
-10 C (14 F): Days with min	32	13	1992	5
20 C (68 F): Tropical nights (min	37	30	1967	16
25 C (77 F): Days with min	1	2	1958	2
10 mm (0.39 in): Days with 10 mm or more rain	42	20	1969	13
25 mm (0.98 in): Days with 25 mm or more rain	41	9	1993	2
50 mm (1.97 in): Days with 50 mm or more rain	10	1	1959	1
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1988	1
10 cm (3.9 in): Days with 10 cm or more snowfall	4	2	1985	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1955.

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Data for Hillside 4 NNE 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).

Hillside 4 NNE Threshold Days by Year (USC00024053)

Key Facts for Hillside 4 NNE Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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