Grenola 1 N Threshold Days by Year (USC00143248)

19 fixed thresholds counted per year at Grenola 1 N (USC00143248): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Grenola 1 N Thresholds

Grenola 1 N: days with 10 mm (0.39 in) or more of precipitation in 110 years, most in 1985 with 46.
Grenola 1 N: days with 25 mm (0.98 in) or more of precipitation in 110 years, most in 1961 with 22.
Grenola 1 N: days with 50 mm (1.97 in) or more of precipitation in 96 years, most in 1961 with 9.
Grenola 1 N: days with a maximum temperature at or above 30 C (86 F) in 33 years, most in 1911 with 112.
19 fixed thresholds have at least one qualifying day at Grenola 1 N.

Days at or above 30 C (86 F)

33 years with a qualifying day

Days per year at Grenola 1 N with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 112 in 1911.

Days at or above 30 C (86 F) per year at Grenola 1 N
Year	Days	Decade average
1893	109	99.7
1894	100	99.7
1896	94	99.7
1897	106	99.7
1898	86	99.7
1899	103	99.7
1900	97	80.1
1901	108	80.1
1902	72	80.1
1903	70	80.1
1904	61	80.1
1905	84	80.1
1906	60	80.1
1907	82	80.1
1908	67	80.1
1909	100	80.1
1910	97	96
1911	112	96
1912	91	96
1913	104	96
1914	103	96
1915	59	96
1916	107	96
1917	96	96
1918	98	96
1919	93	96
1920	78	92.6
1921	111	92.6
1922	95	92.6
1923	89	92.6
1924	84	92.6
1925	100	92.6
1926	91	92.6

For each year, a bar from the first to the last day at Grenola 1 N meeting 30 C (86 F).

First to last qualifying date each year at Grenola 1 N
Year	First date	Last date
1893	1893-04-03	1893-10-10
1894	1894-04-07	1894-10-20
1896	1896-04-15	1896-10-01
1897	1897-04-18	1897-10-24
1898	1898-04-16	1898-10-04
1899	1899-04-13	1899-10-22
1900	1900-03-12	1900-10-23
1901	1901-04-25	1901-10-01
1902	1902-04-20	1902-09-26
1903	1903-04-01	1903-10-03
1904	1904-06-18	1904-10-04
1905	1905-04-08	1905-09-27
1906	1906-04-10	1906-09-21
1907	1907-03-19	1907-10-02
1908	1908-05-19	1908-09-21
1909	1909-04-04	1909-10-07
1910	1910-03-05	1910-10-26
1911	1911-04-29	1911-10-14
1912	1912-05-09	1912-10-09
1913	1913-04-17	1913-10-02
1914	1914-03-15	1914-09-19
1915	1915-04-27	1915-11-01
1916	1916-03-12	1916-10-08
1917	1917-04-22	1917-10-16
1918	1918-04-02	1918-10-08
1919	1919-04-22	1919-10-03
1920	1920-04-17	1920-10-12
1921	1921-03-18	1921-10-24
1922	1922-06-08	1922-10-28
1923	1923-05-11	1923-09-28
1924	1924-04-15	1924-10-16
1925	1925-04-18	1925-10-03
1926	1926-05-16	1926-10-02

Every Fixed Threshold

Fixed thresholds at Grenola 1 N
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	33	112	1911	91
35 C (95 F): Days	32	59	1901	22
40 C (104 F): Days	20	25	1913	3
90 F (32.2 C): Days	33	91	1901	65
100 F (37.8 C): Days	26	38	1913	8
110 F (43.3 C): Days	7	2	1893	2
0 C (32 F): Ice days (max	33	31	1905	6
0 C (32 F): Frost days (min	33	131	1898	104
-10 C (14 F): Days with min	33	43	1905	9
-20 C (-4 F): Days with min	21	11	1905	4
-30 C (-22 F): Days with min	1	1	1905	1
20 C (68 F): Tropical nights (min	33	63	1911	34
25 C (77 F): Days with min	16	5	1918	1
10 mm (0.39 in): Days with 10 mm or more rain	110	46	1985	21
25 mm (0.98 in): Days with 25 mm or more rain	110	22	1961	10
50 mm (1.97 in): Days with 50 mm or more rain	96	9	1961	2
100 mm (3.94 in): Days with 100 mm or more rain	25	3	1961	1
200 mm (7.87 in): Days with 200 mm or more rain	1	1	1977	1
10 cm (3.9 in): Days with 10 cm or more snowfall	32	4	2003	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.

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Data for Grenola 1 N 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 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Grenola 1 N Threshold Days by Year (USC00143248)

Key Facts for Grenola 1 N Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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