Green Threshold Days by Year

15 fixed thresholds counted per year at Green (USC00333345): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Green Thresholds

Green: days with a maximum temperature at or above 30 C (86 F) in 31 years, most in 1922 with 103.
Green: days with a maximum temperature at or above 90 F (32.2 C) in 31 years, most in 1922 with 74.
Green: days with a maximum temperature at or below 0 C (32 F) in 31 years, most in 1902 with 29.
Green: nights with a minimum temperature at or below 0 C (32 F) in 31 years, most in 1895 with 134.
15 fixed thresholds have at least one qualifying day at Green.

Days at or above 30 C (86 F)

31 years with a qualifying day

Days per year at Green with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 103 in 1922.

Days at or above 30 C (86 F) per year at Green
Year	Days	Decade average
1894	86	84
1895	90	84
1896	87	84
1897	68	84
1898	85	84
1899	88	84
1900	97	70.7
1901	71	70.7
1902	68	70.7
1903	73	70.7
1904	74	70.7
1905	39	70.7
1906	80	70.7
1907	59	70.7
1908	89	70.7
1909	57	70.7
1910	72	72.6
1911	66	72.6
1912	66	72.6
1913	80	72.6
1914	94	72.6
1915	58	72.6
1916	69	72.6
1917	62	72.6
1918	74	72.6
1919	85	72.6
1920	52	80.8
1921	97	80.8
1922	103	80.8
1923	85	80.8
1924	67	80.8

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

First to last qualifying date each year at Green
Year	First date	Last date
1894	1894-05-03	1894-10-02
1895	1895-05-02	1895-09-26
1896	1896-04-13	1896-09-18
1897	1897-06-11	1897-10-23
1898	1898-05-20	1898-09-29
1899	1899-04-28	1899-10-14
1900	1900-05-13	1900-10-22
1901	1901-05-01	1901-09-10
1902	1902-04-22	1902-09-08
1903	1903-05-15	1903-10-04
1904	1904-05-06	1904-10-10
1905	1905-06-16	1905-09-30
1906	1906-04-14	1906-09-19
1907	1907-03-22	1907-09-22
1908	1908-04-14	1908-09-27
1909	1909-04-17	1909-09-19
1910	1910-03-24	1910-10-06
1911	1911-05-10	1911-10-01
1912	1912-05-22	1912-10-12
1913	1913-05-02	1913-10-10
1914	1914-04-24	1914-10-06
1915	1915-04-20	1915-09-18
1916	1916-04-17	1916-10-07
1917	1917-04-18	1917-10-05
1918	1918-05-05	1918-10-05
1919	1919-04-09	1919-10-04
1920	1920-04-21	1920-09-27
1921	1921-04-24	1921-09-23
1922	1922-05-10	1922-10-06
1923	1923-05-15	1923-09-28
1924	1924-04-15	1924-09-12

Every Fixed Threshold

Fixed thresholds at Green
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	31	103	1922	67
35 C (95 F): Days	29	26	1914	6
40 C (104 F): Days	3	2	1911	1
90 F (32.2 C): Days	31	74	1922	37
100 F (37.8 C): Days	6	10	1914	1
0 C (32 F): Ice days (max	31	29	1902	10
0 C (32 F): Frost days (min	31	134	1895	111
-10 C (14 F): Days with min	31	34	1917	11
-20 C (-4 F): Days with min	18	9	1899	5
-30 C (-22 F): Days with min	1	1	1899	1
20 C (68 F): Tropical nights (min	31	36	1913	11
25 C (77 F): Days with min	3	1	1907	1
10 mm (0.39 in): Days with 10 mm or more rain	19	53	1907	47
25 mm (0.98 in): Days with 25 mm or more rain	19	23	1907	12
50 mm (1.97 in): Days with 50 mm or more rain	18	4	1902	2

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1894.

Download the Data

Data for Green 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Green Threshold Days by Year

Key Facts for Green Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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