Appleton Threshold Days by Year (USC00300208)

14 fixed thresholds counted per year at Appleton (USC00300208): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Appleton Thresholds

Appleton: nights with a minimum temperature at or below 0 C (32 F) in 29 years, most in 1904 with 165.
Appleton: nights with a minimum temperature at or below -10 C (14 F) in 29 years, most in 1904 with 53.
Appleton: days with a maximum temperature at or above 30 C (86 F) in 28 years, most in 1921 with 40.
Appleton: days with a maximum temperature at or above 90 F (32.2 C) in 28 years, most in 1900 with 18.
14 fixed thresholds have at least one qualifying day at Appleton.

Days at or above 30 C (86 F)

28 years with a qualifying day

Days per year at Appleton with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 40 in 1921.

Days at or above 30 C (86 F) per year at Appleton
Year	Days	Decade average
1895	17	19.2
1896	19	19.2
1897	13	19.2
1898	28	19.2
1899	19	19.2
1900	30	17.8
1901	12	17.8
1902	9	17.8
1903	13	17.8
1904	12	17.8
1905	15	17.8
1906	30	17.8
1907	14	17.8
1908	26	17.8
1909	17	17.8
1910	11	19.1
1911	28	19.1
1912	13	19.1
1913	22	19.1
1914	18	19.1
1915	11	19.1
1916	33	19.1
1917	14	19.1
1918	19	19.1
1919	22	19.1
1920	10	24.3
1921	40	24.3
1922	23	24.3

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

First to last qualifying date each year at Appleton
Year	First date	Last date
1895	1895-05-29	1895-09-22
1896	1896-05-08	1896-09-11
1897	1897-06-23	1897-09-16
1898	1898-05-22	1898-09-04
1899	1899-06-04	1899-09-17
1900	1900-06-26	1900-10-07
1901	1901-06-05	1901-09-07
1902	1902-05-22	1902-09-11
1903	1903-05-19	1903-09-15
1904	1904-05-25	1904-09-11
1905	1905-06-18	1905-09-19
1906	1906-05-16	1906-09-22
1907	1907-06-17	1907-09-16
1908	1908-05-28	1908-09-10
1909	1909-06-21	1909-09-15
1910	1910-06-22	1910-08-25
1911	1911-05-11	1911-08-14
1912	1912-05-28	1912-09-10
1913	1913-05-03	1913-09-02
1914	1914-05-25	1914-09-22
1915	1915-04-26	1915-09-16
1916	1916-07-07	1916-10-08
1917	1917-06-19	1917-08-20
1918	1918-05-18	1918-08-23
1919	1919-05-29	1919-09-08
1920	1920-06-10	1920-09-27
1921	1921-05-21	1921-09-29
1922	1922-05-31	1922-09-10

Every Fixed Threshold

Fixed thresholds at Appleton
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	28	40	1921	23
35 C (95 F): Days	15	12	1911	1
40 C (104 F): Days	1	1	1911	1
90 F (32.2 C): Days	28	18	1900	7
100 F (37.8 C): Days	3	5	1911	1
0 C (32 F): Ice days (max	28	70	1904	49
0 C (32 F): Frost days (min	29	165	1904	138
-10 C (14 F): Days with min	29	53	1904	27
-20 C (-4 F): Days with min	17	5	1904	4
20 C (68 F): Tropical nights (min	28	26	1921	6
25 C (77 F): Days with min	3	1	1897	1
10 mm (0.39 in): Days with 10 mm or more rain	28	28	1898	16
25 mm (0.98 in): Days with 25 mm or more rain	27	6	1903	5
50 mm (1.97 in): Days with 50 mm or more rain	6	2	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 1895.

Download the Data

Data for Appleton 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).

Appleton Threshold Days by Year (USC00300208)

Key Facts for Appleton Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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