Ryan Threshold Days by Year (USC00467846)

16 fixed thresholds counted per year at Ryan (USC00467846): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Ryan Thresholds

Ryan: days with 10 mm (0.39 in) or more of precipitation in 42 years, most in 1907 with 52.
Ryan: days with 25 mm (0.98 in) or more of precipitation in 41 years, most in 1927 with 14.
Ryan: days with a maximum temperature at or above 30 C (86 F) in 39 years, most in 1921 with 92.
Ryan: days with a maximum temperature at or above 90 F (32.2 C) in 39 years, most in 1918 with 56.
16 fixed thresholds have at least one qualifying day at Ryan.

Days at or above 30 C (86 F)

39 years with a qualifying day

Days per year at Ryan with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 92 in 1921.

Days at or above 30 C (86 F) per year at Ryan
Year	Days	Decade average
1903	75	57.9
1904	68	57.9
1905	50	57.9
1906	65	57.9
1907	40	57.9
1908	65	57.9
1909	42	57.9
1910	47	61.2
1911	78	61.2
1912	40	61.2
1913	66	61.2
1914	72	61.2
1915	48	61.2
1916	53	61.2
1917	52	61.2
1918	85	61.2
1919	71	61.2
1920	41	51.4
1921	92	51.4
1922	63	51.4
1923	62	51.4
1924	35	51.4
1925	76	51.4
1926	49	51.4
1927	24	51.4
1928	40	51.4
1929	32	51.4
1930	65	53.4
1931	62	53.4
1932	57	53.4
1933	46	53.4
1934	52	53.4
1935	48	53.4
1938	37	53.4
1939	60	53.4
1940	32	56.3
1941	51	56.3
1942	63	56.3
1943	79	56.3

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

First to last qualifying date each year at Ryan
Year	First date	Last date
1903	1903-05-16	1903-10-07
1904	1904-05-05	1904-10-19
1905	1905-05-04	1905-09-30
1906	1906-04-13	1906-09-21
1907	1907-03-22	1907-09-20
1908	1908-04-24	1908-09-26
1909	1909-04-05	1909-09-14
1910	1910-03-24	1910-10-05
1911	1911-05-10	1911-09-08
1912	1912-05-23	1912-09-14
1913	1913-05-02	1913-10-10
1914	1914-04-18	1914-09-22
1915	1915-04-25	1915-09-18
1916	1916-05-14	1916-10-08
1917	1917-04-19	1917-09-20
1918	1918-05-05	1918-10-06
1919	1919-04-09	1919-10-10
1920	1920-04-22	1920-10-21
1921	1921-03-20	1921-09-29
1922	1922-05-09	1922-10-06
1923	1923-05-27	1923-10-13
1924	1924-05-06	1924-09-01
1925	1925-04-24	1925-09-26
1926	1926-05-01	1926-10-04
1927	1927-05-21	1927-10-02
1928	1928-05-04	1928-10-17
1929	1929-03-25	1929-09-29
1930	1930-04-12	1930-09-26
1931	1931-05-28	1931-09-23
1932	1932-05-25	1932-09-16
1933	1933-05-26	1933-09-26
1934	1934-05-20	1934-09-26
1935	1935-06-26	1935-10-14
1938	1938-05-04	1938-10-19
1939	1939-05-19	1939-10-10
1940	1940-05-06	1940-09-21
1941	1941-05-06	1941-10-07
1942	1942-04-05	1942-09-18
1943	1943-05-06	1943-09-29

Every Fixed Threshold

Fixed thresholds at Ryan
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	39	92	1921	79
35 C (95 F): Days	26	33	1931	2
90 F (32.2 C): Days	39	56	1918	43
100 F (37.8 C): Days	4	4	1930	2
0 C (32 F): Ice days (max	39	32	1934	13
0 C (32 F): Frost days (min	39	150	1930	144
-10 C (14 F): Days with min	39	39	1903	31
-20 C (-4 F): Days with min	29	12	1912	2
-30 C (-22 F): Days with min	4	1	1912	1
20 C (68 F): Tropical nights (min	32	15	1914	1
10 mm (0.39 in): Days with 10 mm or more rain	42	52	1907	37
25 mm (0.98 in): Days with 25 mm or more rain	41	14	1927	7
50 mm (1.97 in): Days with 50 mm or more rain	25	3	1940	2
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1911	1
10 cm (3.9 in): Days with 10 cm or more snowfall	14	6	1914	3
25 cm (9.8 in): Days with 25 cm or more snowfall	1	1	1921	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1903.

Download the Data

Data for Ryan 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).

Ryan Threshold Days by Year (USC00467846)

Key Facts for Ryan Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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