De Ruyter 4 N Threshold Days by Year (USC00302079)

16 fixed thresholds counted per year at De Ruyter 4 N (USC00302079): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for De Ruyter 4 N Thresholds

De Ruyter 4 N: days with 10 mm (0.39 in) or more of precipitation in 71 years, most in 1958 with 55.
De Ruyter 4 N: days with 25 mm (0.98 in) or more of precipitation in 71 years, most in 1958 with 17.
De Ruyter 4 N: days with 50 mm (1.97 in) or more of precipitation in 44 years, most in 1955 with 3.
De Ruyter 4 N: days with 10 cm (3.9 in) or more of snowfall in 29 years, most in 1950 with 12.
16 fixed thresholds have at least one qualifying day at De Ruyter 4 N.

Days at or above 30 C (86 F)

22 years with a qualifying day

Days per year at De Ruyter 4 N with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 23 in 1921.

Days at or above 30 C (86 F) per year at De Ruyter 4 N
Year	Days	Decade average
1903	5	8.4
1904	2	8.4
1905	5	8.4
1906	11	8.4
1907	7	8.4
1908	16	8.4
1909	13	8.4
1910	8	11.6
1911	18	11.6
1912	9	11.6
1913	17	11.6
1914	6	11.6
1915	3	11.6
1916	16	11.6
1917	8	11.6
1918	16	11.6
1919	15	11.6
1920	5	11.4
1921	23	11.4
1922	6	11.4
1923	19	11.4
1924	4	11.4

For each year, a bar from the first to the last day at De Ruyter 4 N meeting 30 C (86 F).

First to last qualifying date each year at De Ruyter 4 N
Year	First date	Last date
1903	1903-05-18	1903-09-14
1904	1904-06-25	1904-07-19
1905	1905-07-11	1905-10-01
1906	1906-05-18	1906-09-19
1907	1907-06-18	1907-09-16
1908	1908-06-19	1908-09-26
1909	1909-06-22	1909-09-14
1910	1910-07-09	1910-08-15
1911	1911-05-21	1911-08-10
1912	1912-07-03	1912-07-15
1913	1913-05-04	1913-10-10
1914	1914-05-27	1914-10-10
1915	1915-09-14	1915-09-16
1916	1916-07-11	1916-08-26
1917	1917-07-22	1917-08-02
1918	1918-06-01	1918-08-24
1919	1919-06-03	1919-09-08
1920	1920-06-01	1920-08-08
1921	1921-05-21	1921-09-10
1922	1922-07-12	1922-08-18
1923	1923-06-05	1923-09-01
1924	1924-06-20	1924-08-31

Every Fixed Threshold

Fixed thresholds at De Ruyter 4 N
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	22	23	1921	4
35 C (95 F): Days	4	2	1911	2
90 F (32.2 C): Days	15	8	1911	1
0 C (32 F): Ice days (max	22	89	1904	76
0 C (32 F): Frost days (min	22	187	1917	182
-10 C (14 F): Days with min	22	82	1904	60
-20 C (-4 F): Days with min	22	28	1914	15
-30 C (-22 F): Days with min	12	6	1914	1
-40 C (-40 F): Days with min	1	1	1917	1
20 C (68 F): Tropical nights (min	15	6	1916	1
10 mm (0.39 in): Days with 10 mm or more rain	71	55	1958	35
25 mm (0.98 in): Days with 25 mm or more rain	71	17	1958	6
50 mm (1.97 in): Days with 50 mm or more rain	44	3	1955	1
10 cm (3.9 in): Days with 10 cm or more snowfall	29	12	1950	4
25 cm (9.8 in): Days with 25 cm or more snowfall	12	2	1973	2
50 cm (19.7 in): Days with 50 cm or more snowfall	2	1	1961	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1903.

Download the Data

Data for De Ruyter 4 N 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).

De Ruyter 4 N Threshold Days by Year (USC00302079)

Key Facts for De Ruyter 4 N Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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