Green Hill Threshold Days by Year (USC00333362)

14 fixed thresholds counted per year at Green Hill (USC00333362): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Green Hill Thresholds

Green Hill: days with a maximum temperature at or above 30 C (86 F) in 32 years, most in 1895 with 78.
Green Hill: days with a maximum temperature at or below 0 C (32 F) in 32 years, most in 1904 with 60.
Green Hill: nights with a minimum temperature at or below 0 C (32 F) in 32 years, most in 1895 with 179.
Green Hill: nights with a minimum temperature at or below -10 C (14 F) in 32 years, most in 1895 with 59.
14 fixed thresholds have at least one qualifying day at Green Hill.

Days at or above 30 C (86 F)

32 years with a qualifying day

Days per year at Green Hill with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 78 in 1895.

Days at or above 30 C (86 F) per year at Green Hill
Year	Days	Decade average
1893	55	55.7
1894	75	55.7
1895	78	55.7
1896	48	55.7
1897	49	55.7
1898	36	55.7
1899	49	55.7
1900	51	27.2
1901	43	27.2
1902	26	27.2
1903	26	27.2
1904	12	27.2
1905	20	27.2
1906	27	27.2
1907	11	27.2
1908	39	27.2
1909	17	27.2
1910	22	23.6
1911	31	23.6
1912	14	23.6
1913	32	23.6
1914	34	23.6
1915	10	23.6
1916	24	23.6
1917	10	23.6
1918	30	23.6
1919	29	23.6
1920	4	17.2
1921	37	17.2
1922	17	17.2
1923	19	17.2
1924	9	17.2

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

First to last qualifying date each year at Green Hill
Year	First date	Last date
1893	1893-06-03	1893-10-12
1894	1894-05-10	1894-09-15
1895	1895-05-03	1895-09-22
1896	1896-04-17	1896-09-14
1897	1897-06-15	1897-10-16
1898	1898-06-06	1898-10-03
1899	1899-06-04	1899-10-15
1900	1900-05-16	1900-10-06
1901	1901-06-05	1901-09-06
1902	1902-05-19	1902-09-23
1903	1903-05-17	1903-09-16
1904	1904-05-25	1904-09-29
1905	1905-05-04	1905-09-19
1906	1906-06-08	1906-09-19
1907	1907-06-18	1907-08-20
1908	1908-05-25	1908-09-26
1909	1909-06-21	1909-09-14
1910	1910-06-20	1910-09-05
1911	1911-05-18	1911-08-11
1912	1912-06-29	1912-09-10
1913	1913-06-15	1913-09-06
1914	1914-05-25	1914-09-22
1915	1915-04-25	1915-09-16
1916	1916-07-08	1916-09-07
1917	1917-06-26	1917-08-20
1918	1918-06-29	1918-08-25
1919	1919-05-30	1919-09-09
1920	1920-06-10	1920-07-30
1921	1921-06-13	1921-09-02
1922	1922-06-24	1922-10-05
1923	1923-05-05	1923-08-07
1924	1924-06-19	1924-08-31

Every Fixed Threshold

Fixed thresholds at Green Hill
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	32	78	1895	9
35 C (95 F): Days	11	23	1894	3
40 C (104 F): Days	1	1	1895	1
90 F (32.2 C): Days	28	54	1894	2
100 F (37.8 C): Days	4	3	1897	2
0 C (32 F): Ice days (max	32	60	1904	47
0 C (32 F): Frost days (min	32	179	1895	161
-10 C (14 F): Days with min	32	59	1895	41
-20 C (-4 F): Days with min	29	19	1917	9
-30 C (-22 F): Days with min	5	3	1918	3
20 C (68 F): Tropical nights (min	28	11	1898	2
10 mm (0.39 in): Days with 10 mm or more rain	4	36	1893	36
25 mm (0.98 in): Days with 25 mm or more rain	4	9	1893	2
50 mm (1.97 in): Days with 50 mm or more rain	1	1	1893	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1893.

Download the Data

Data for Green 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).

Green Hill Threshold Days by Year (USC00333362)

Key Facts for Green Hill Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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