North Royalton Threshold Days by Year (USC00336085)

16 fixed thresholds counted per year at North Royalton (USC00336085): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for North Royalton Thresholds

North Royalton: days with a maximum temperature at or above 30 C (86 F) in 28 years, most in 1900 with 69.
North Royalton: days with a maximum temperature at or above 90 F (32.2 C) in 28 years, most in 1894 with 40.
North Royalton: days with a maximum temperature at or below 0 C (32 F) in 28 years, most in 1904 with 70.
North Royalton: nights with a minimum temperature at or below 0 C (32 F) in 28 years, most in 1917 with 157.
16 fixed thresholds have at least one qualifying day at North Royalton.

Days at or above 30 C (86 F)

28 years with a qualifying day

Days per year at North Royalton with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 69 in 1900.

Days at or above 30 C (86 F) per year at North Royalton
Year	Days	Decade average
1894	59	49.3
1895	56	49.3
1896	39	49.3
1897	29	49.3
1898	53	49.3
1899	60	49.3
1900	69	30.4
1901	49	30.4
1902	23	30.4
1903	28	30.4
1904	11	30.4
1905	18	30.4
1906	34	30.4
1907	18	30.4
1908	39	30.4
1909	15	30.4
1910	42	31.2
1911	37	31.2
1912	24	31.2
1913	38	31.2
1914	32	31.2
1915	16	31.2
1916	49	31.2
1917	18	31.2
1918	27	31.2
1919	29	31.2
1921	40	30.5
1922	21	30.5

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

First to last qualifying date each year at North Royalton
Year	First date	Last date
1894	1894-05-17	1894-09-15
1895	1895-05-04	1895-09-22
1896	1896-04-18	1896-09-12
1897	1897-06-15	1897-10-15
1898	1898-06-06	1898-10-03
1899	1899-04-30	1899-10-15
1900	1900-05-14	1900-10-06
1901	1901-06-05	1901-09-06
1902	1902-05-19	1902-08-31
1903	1903-05-17	1903-09-15
1904	1904-05-25	1904-09-02
1905	1905-06-15	1905-09-29
1906	1906-06-07	1906-09-21
1907	1907-06-22	1907-09-20
1908	1908-05-21	1908-09-26
1909	1909-06-23	1909-09-14
1910	1910-06-18	1910-09-12
1911	1911-05-18	1911-08-22
1912	1912-06-26	1912-09-10
1913	1913-06-06	1913-09-07
1914	1914-04-28	1914-09-22
1915	1915-04-25	1915-09-16
1916	1916-06-29	1916-10-08
1917	1917-06-26	1917-08-20
1918	1918-05-06	1918-08-25
1919	1919-05-30	1919-09-20
1921	1921-05-21	1921-09-18
1922	1922-06-07	1922-10-05

Every Fixed Threshold

Fixed thresholds at North Royalton
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	28	69	1900	21
35 C (95 F): Days	19	10	1900	2
90 F (32.2 C): Days	28	40	1894	9
100 F (37.8 C): Days	5	2	1897	1
0 C (32 F): Ice days (max	28	70	1904	31
0 C (32 F): Frost days (min	28	157	1917	132
-10 C (14 F): Days with min	28	55	1895	31
-20 C (-4 F): Days with min	23	13	1912	3
-30 C (-22 F): Days with min	1	1	1918	1
20 C (68 F): Tropical nights (min	28	19	1900	10
25 C (77 F): Days with min	4	2	1918	2
10 mm (0.39 in): Days with 10 mm or more rain	23	41	1913	28
25 mm (0.98 in): Days with 25 mm or more rain	23	11	1912	5
50 mm (1.97 in): Days with 50 mm or more rain	10	3	1903	1
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1903	1
10 cm (3.9 in): Days with 10 cm or more snowfall	1	4	1909	4

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 North Royalton 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).

North Royalton Threshold Days by Year (USC00336085)

Key Facts for North Royalton Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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