Cassopolis Threshold Days by Year (USC00201363)

17 fixed thresholds counted per year at Cassopolis (USC00201363): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Cassopolis Thresholds

Cassopolis: days with a maximum temperature at or above 30 C (86 F) in 29 years, most in 1921 with 72.
Cassopolis: days with a maximum temperature at or below 0 C (32 F) in 29 years, most in 1904 with 71.
Cassopolis: days with 10 mm (0.39 in) or more of precipitation in 29 years, most in 1907 with 48.
Cassopolis: days with 25 mm (0.98 in) or more of precipitation in 29 years, most in 1902 with 12.
17 fixed thresholds have at least one qualifying day at Cassopolis.

Days at or above 30 C (86 F)

29 years with a qualifying day

Days per year at Cassopolis with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 72 in 1921.

Days at or above 30 C (86 F) per year at Cassopolis
Year	Days	Decade average
1901	54	26.8
1902	19	26.8
1903	27	26.8
1904	17	26.8
1905	27	26.8
1907	9	26.8
1908	35	26.8
1909	26	26.8
1910	43	40.3
1915	12	40.3
1916	52	40.3
1917	28	40.3
1918	43	40.3
1919	64	40.3
1920	42	42.8
1921	72	42.8
1922	45	42.8
1923	34	42.8
1924	23	42.8
1925	59	42.8
1926	31	42.8
1927	34	42.8
1928	45	42.8
1929	43	42.8
1930	58	56.6
1931	69	56.6
1932	41	56.6
1933	49	56.6
1934	66	56.6

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

First to last qualifying date each year at Cassopolis
Year	First date	Last date
1901	1901-06-11	1901-09-24
1902	1902-05-19	1902-09-22
1903	1903-05-17	1903-10-03
1904	1904-05-25	1904-08-27
1905	1905-06-05	1905-09-29
1907	1907-06-16	1907-09-17
1908	1908-05-25	1908-09-22
1909	1909-06-28	1909-09-16
1910	1910-06-17	1910-09-01
1915	1915-04-25	1915-09-16
1916	1916-05-25	1916-09-12
1917	1917-05-19	1917-08-23
1918	1918-05-26	1918-08-27
1919	1919-05-27	1919-09-20
1920	1920-06-08	1920-10-20
1921	1921-05-20	1921-09-29
1922	1922-05-11	1922-10-05
1923	1923-05-28	1923-08-12
1924	1924-06-19	1924-09-21
1925	1925-04-23	1925-09-20
1926	1926-05-07	1926-10-03
1927	1927-04-18	1927-09-18
1928	1928-05-04	1928-10-11
1929	1929-05-29	1929-09-28
1930	1930-05-10	1930-09-23
1931	1931-05-18	1931-09-22
1932	1932-05-24	1932-09-19
1933	1933-05-25	1933-09-25
1934	1934-05-06	1934-08-19

Every Fixed Threshold

Fixed thresholds at Cassopolis
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	29	72	1921	66
35 C (95 F): Days	18	21	1916	17
40 C (104 F): Days	1	3	1934	3
90 F (32.2 C): Days	27	44	1931	43
100 F (37.8 C): Days	8	8	1916	7
0 C (32 F): Ice days (max	29	71	1904	53
0 C (32 F): Frost days (min	28	158	1907	141
-10 C (14 F): Days with min	28	59	1904	38
-20 C (-4 F): Days with min	24	17	1918	4
-30 C (-22 F): Days with min	1	1	1918	1
20 C (68 F): Tropical nights (min	28	27	1921	25
25 C (77 F): Days with min	8	3	1915	1
10 mm (0.39 in): Days with 10 mm or more rain	29	48	1907	30
25 mm (0.98 in): Days with 25 mm or more rain	29	12	1902	3
50 mm (1.97 in): Days with 50 mm or more rain	19	3	1933	2
10 cm (3.9 in): Days with 10 cm or more snowfall	9	9	1903	5
25 cm (9.8 in): Days with 25 cm or more snowfall	4	1	1902	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1901.

Download the Data

Data for Cassopolis 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).

Cassopolis Threshold Days by Year (USC00201363)

Key Facts for Cassopolis Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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