Mancelona Threshold Days by Year (USC00205043)

18 fixed thresholds counted per year at Mancelona (USC00205043): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Mancelona Thresholds

Mancelona: days with 10 mm (0.39 in) or more of precipitation in 21 years, most in 1941 with 41.
Mancelona: days with a maximum temperature at or above 30 C (86 F) in 20 years, most in 1921 with 51.
Mancelona: days with a maximum temperature at or above 90 F (32.2 C) in 20 years, most in 1921 with 29.
Mancelona: days with a maximum temperature at or below 0 C (32 F) in 20 years, most in 1904 with 100.
18 fixed thresholds have at least one qualifying day at Mancelona.

Days at or above 30 C (86 F)

20 years with a qualifying day

Days per year at Mancelona with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 51 in 1921.

Days at or above 30 C (86 F) per year at Mancelona
Year	Days	Decade average
1897	22	20.3
1898	21	20.3
1899	18	20.3
1900	23	19
1901	27	19
1902	9	19
1904	8	19
1906	23	19
1907	9	19
1908	30	19
1909	23	19
1911	25	24.8
1912	11	24.8
1913	37	24.8
1916	39	24.8
1917	12	24.8
1920	15	33.3
1921	51	33.3
1924	16	33.3
1925	51	33.3

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

First to last qualifying date each year at Mancelona
Year	First date	Last date
1897	1897-06-14	1897-09-15
1898	1898-06-04	1898-09-29
1899	1899-05-30	1899-09-16
1900	1900-05-13	1900-09-11
1901	1901-04-27	1901-09-06
1902	1902-07-04	1902-08-17
1904	1904-06-19	1904-07-19
1906	1906-05-16	1906-09-17
1907	1907-06-16	1907-09-01
1908	1908-05-25	1908-09-26
1909	1909-06-21	1909-09-14
1911	1911-05-19	1911-09-01
1912	1912-06-24	1912-09-09
1913	1913-05-01	1913-09-07
1916	1916-07-05	1916-09-11
1917	1917-06-10	1917-08-02
1920	1920-05-30	1920-09-25
1921	1921-05-20	1921-09-02
1924	1924-06-19	1924-09-01
1925	1925-05-21	1925-09-09

Every Fixed Threshold

Fixed thresholds at Mancelona
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	20	51	1921	51
35 C (95 F): Days	12	18	1921	2
40 C (104 F): Days	1	1	1916	1
90 F (32.2 C): Days	20	29	1921	25
100 F (37.8 C): Days	5	3	1916	3
0 C (32 F): Ice days (max	20	100	1904	80
0 C (32 F): Frost days (min	20	204	1917	196
-10 C (14 F): Days with min	20	90	1924	90
-20 C (-4 F): Days with min	19	31	1917	16
-30 C (-22 F): Days with min	9	8	1899	2
-40 C (-40 F): Days with min	1	1	1899	1
20 C (68 F): Tropical nights (min	16	25	1921	3
25 C (77 F): Days with min	3	1	1897	1
10 mm (0.39 in): Days with 10 mm or more rain	21	41	1941	34
25 mm (0.98 in): Days with 25 mm or more rain	18	11	1911	5
50 mm (1.97 in): Days with 50 mm or more rain	8	3	1924	1
10 cm (3.9 in): Days with 10 cm or more snowfall	17	17	1951	6
25 cm (9.8 in): Days with 25 cm or more snowfall	5	2	1951	2

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1897.

Download the Data

Data for Mancelona 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).

Mancelona Threshold Days by Year (USC00205043)

Key Facts for Mancelona Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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