Arkona Threshold Days by Year (CA006120315)

16 fixed thresholds counted per year at Arkona (CA006120315): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Arkona Thresholds

Arkona: days with a maximum temperature at or above 30 C (86 F) in 30 years, most in 1887 with 35.
Arkona: days with a maximum temperature at or below 0 C (32 F) in 30 years, most in 1904 with 103.
Arkona: days with 10 mm (0.39 in) or more of precipitation in 30 years, most in 1912 with 44.
Arkona: days with 25 mm (0.98 in) or more of precipitation in 30 years, most in 1898 with 11.
16 fixed thresholds have at least one qualifying day at Arkona.

Days at or above 30 C (86 F)

30 years with a qualifying day

Days per year at Arkona with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 35 in 1887.

Days at or above 30 C (86 F) per year at Arkona
Year	Days	Decade average
1883	4	17
1884	18	17
1885	11	17
1886	18	17
1887	35	17
1888	14	17
1889	19	17
1890	15	20.8
1891	15	20.8
1892	16	20.8
1894	25	20.8
1895	27	20.8
1896	19	20.8
1897	13	20.8
1898	27	20.8
1899	30	20.8
1900	30	13.1
1901	34	13.1
1903	3	13.1
1904	4	13.1
1905	2	13.1
1906	14	13.1
1907	6	13.1
1908	15	13.1
1909	10	13.1
1910	8	15
1911	29	15
1912	9	15
1913	14	15
1914	15	15

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

First to last qualifying date each year at Arkona
Year	First date	Last date
1883	1883-06-17	1883-08-22
1884	1884-07-01	1884-09-10
1885	1885-06-07	1885-07-31
1886	1886-06-14	1886-09-08
1887	1887-05-20	1887-09-13
1888	1888-04-28	1888-08-26
1889	1889-05-08	1889-09-15
1890	1890-06-24	1890-09-07
1891	1891-06-10	1891-08-20
1892	1892-06-12	1892-08-18
1894	1894-06-10	1894-09-03
1895	1895-05-04	1895-09-22
1896	1896-05-08	1896-08-15
1897	1897-07-02	1897-09-16
1898	1898-06-05	1898-09-03
1899	1899-06-04	1899-09-07
1900	1900-06-24	1900-09-26
1901	1901-06-12	1901-09-07
1903	1903-07-01	1903-07-09
1904	1904-06-25	1904-09-02
1905	1905-07-17	1905-07-18
1906	1906-06-28	1906-09-18
1907	1907-06-18	1907-08-10
1908	1908-06-22	1908-09-26
1909	1909-07-09	1909-09-14
1910	1910-06-22	1910-07-24
1911	1911-05-19	1911-08-14
1912	1912-06-28	1912-09-10
1913	1913-06-16	1913-09-02
1914	1914-05-26	1914-08-10

Every Fixed Threshold

Fixed thresholds at Arkona
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	30	35	1887	15
35 C (95 F): Days	9	6	1887	4
90 F (32.2 C): Days	26	19	1887	3
100 F (37.8 C): Days	1	1	1911	1
0 C (32 F): Ice days (max	30	103	1904	80
0 C (32 F): Frost days (min	29	169	1888	143
-10 C (14 F): Days with min	29	77	1883	48
-20 C (-4 F): Days with min	27	34	1885	11
-30 C (-22 F): Days with min	8	3	1899	1
20 C (68 F): Tropical nights (min	29	18	1898	13
10 mm (0.39 in): Days with 10 mm or more rain	30	44	1912	27
25 mm (0.98 in): Days with 25 mm or more rain	30	11	1898	4
50 mm (1.97 in): Days with 50 mm or more rain	11	3	1889	1
10 cm (3.9 in): Days with 10 cm or more snowfall	30	11	1886	3
25 cm (9.8 in): Days with 25 cm or more snowfall	10	3	1892	1
50 cm (19.7 in): Days with 50 cm or more snowfall	1	1	1910	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1883.

Download the Data

Data for Arkona 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 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Arkona Threshold Days by Year (CA006120315)

Key Facts for Arkona Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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