Dialville 2 W Threshold Days by Year (USC00412444)

18 fixed thresholds counted per year at Dialville 2 W (USC00412444): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Dialville 2 W Thresholds

Dialville 2 W: days with 10 mm (0.39 in) or more of precipitation in 108 years, most in 1946 with 50.
Dialville 2 W: days with 25 mm (0.98 in) or more of precipitation in 108 years, most in 1946 with 26.
Dialville 2 W: days with 50 mm (1.97 in) or more of precipitation in 106 years, most in 1932 with 9.
Dialville 2 W: days with a maximum temperature at or above 30 C (86 F) in 71 years, most in 1925 with 166.
18 fixed thresholds have at least one qualifying day at Dialville 2 W.

Days at or above 30 C (86 F)

71 years with a qualifying day

Days per year at Dialville 2 W with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 166 in 1925.

Days at or above 30 C (86 F) per year at Dialville 2 W
Year	Days	Decade average
1898	126	126
1900	120	113.4
1902	119	113.4
1903	93	113.4
1904	116	113.4
1905	110	113.4
1906	102	113.4
1907	117	113.4
1909	130	113.4
1910	147	135
1911	145	135
1912	126	135
1913	114	135
1914	146	135
1915	132	135
1917	143	135
1918	137	135
1919	125	135
1920	126	142.8
1921	148	142.8
1922	154	142.8
1923	132	142.8
1924	128	142.8
1925	166	142.8
1926	143	142.8
1927	160	142.8
1928	142	142.8
1929	129	142.8
1930	113	137.9
1931	134	137.9
1932	127	137.9
1933	146	137.9
1934	150	137.9
1935	138	137.9
1936	134	137.9
1937	145	137.9
1938	150	137.9
1939	142	137.9
1940	97	117.8
1941	125	117.8
1942	106	117.8
1943	131	117.8
1944	124	117.8
1945	109	117.8
1946	110	117.8
1949	140	117.8
1953	139	128.6
1954	137	128.6
1955	140	128.6
1956	150	128.6
1957	106	128.6
1958	112	128.6
1959	116	128.6
1960	132	117.1
1961	104	117.1
1962	129	117.1
1963	150	117.1
1964	113	117.1
1965	113	117.1
1966	99	117.1
1967	98	117.1
1968	104	117.1
1969	129	117.1
1970	131	125.3
1971	125	125.3
1972	155	125.3
1973	125	125.3
1974	121	125.3
1975	116	125.3
1976	92	125.3
1977	137	125.3

For each year, a bar from the first to the last day at Dialville 2 W meeting 30 C (86 F).

First to last qualifying date each year at Dialville 2 W
Year	First date	Last date
1898	1898-03-18	1898-10-16
1900	1900-03-12	1900-10-24
1902	1902-04-05	1902-10-13
1903	1903-05-16	1903-10-04
1904	1904-03-12	1904-10-11
1905	1905-05-04	1905-10-18
1906	1906-05-04	1906-09-23
1907	1907-05-23	1907-10-03
1909	1909-04-03	1909-10-15
1910	1910-03-21	1910-10-26
1911	1911-03-07	1911-11-10
1912	1912-03-18	1912-10-11
1913	1913-04-16	1913-10-10
1914	1914-04-01	1914-10-22
1915	1915-04-15	1915-10-29
1917	1917-02-18	1917-10-28
1918	1918-02-25	1918-10-20
1919	1919-04-24	1919-10-31
1920	1920-05-23	1920-10-20
1921	1921-05-11	1921-11-16
1922	1922-04-06	1922-12-08
1923	1923-04-22	1923-10-13
1924	1924-04-07	1924-11-14
1925	1925-03-25	1925-10-08
1926	1926-04-23	1926-10-19
1927	1927-02-16	1927-11-10
1928	1928-03-25	1928-10-27
1929	1929-03-23	1929-10-18
1930	1930-04-07	1930-10-11
1931	1931-05-15	1931-10-27
1932	1932-02-10	1932-10-24
1933	1933-03-14	1933-12-09
1934	1934-04-10	1934-11-09
1935	1935-03-20	1935-11-10
1936	1936-03-14	1936-10-21
1937	1937-04-15	1937-10-31
1938	1938-03-04	1938-10-31
1939	1939-04-02	1939-10-27
1940	1940-04-01	1940-10-20
1941	1941-05-07	1941-10-23
1942	1942-03-13	1942-10-29
1943	1943-04-05	1943-10-31
1944	1944-04-15	1944-10-31
1945	1945-05-07	1945-11-02
1946	1946-03-29	1946-10-24
1949	1949-04-07	1949-10-21
1953	1953-05-08	1953-10-21
1954	1954-04-29	1954-10-13
1955	1955-03-12	1955-11-14
1956	1956-04-28	1956-10-20
1957	1957-05-12	1957-10-04
1958	1958-04-23	1958-10-09
1959	1959-04-30	1959-10-12
1960	1960-04-06	1960-10-13
1961	1961-05-07	1961-10-11
1962	1962-05-14	1962-10-16
1963	1963-04-09	1963-10-20
1964	1964-04-23	1964-09-23
1965	1965-04-22	1965-10-10
1966	1966-03-31	1966-10-14
1967	1967-03-11	1967-10-04
1968	1968-04-27	1968-10-20
1969	1969-04-22	1969-10-20
1970	1970-04-22	1970-10-07
1971	1971-03-28	1971-10-31
1972	1972-03-23	1972-10-31
1973	1973-05-09	1973-10-10
1974	1974-03-19	1974-09-20
1975	1975-04-18	1975-10-14
1976	1976-05-22	1976-10-02
1977	1977-05-05	1977-10-31

Every Fixed Threshold

Fixed thresholds at Dialville 2 W
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	71	166	1925	137
35 C (95 F): Days	70	114	1925	48
40 C (104 F): Days	31	42	1925	2
90 F (32.2 C): Days	71	152	1925	109
100 F (37.8 C): Days	55	76	1925	5
110 F (43.3 C): Days	2	6	1925	6
0 C (32 F): Ice days (max	37	7	1905	3
0 C (32 F): Frost days (min	70	63	1914	31
-10 C (14 F): Days with min	34	7	1963	2
-20 C (-4 F): Days with min	1	1	1930	1
20 C (68 F): Tropical nights (min	70	126	1911	117
25 C (77 F): Days with min	31	6	1909	2
10 mm (0.39 in): Days with 10 mm or more rain	108	50	1946	32
25 mm (0.98 in): Days with 25 mm or more rain	108	26	1946	15
50 mm (1.97 in): Days with 50 mm or more rain	106	9	1932	7
100 mm (3.94 in): Days with 100 mm or more rain	34	2	1907	1
200 mm (7.87 in): Days with 200 mm or more rain	3	1	1940	1
10 cm (3.9 in): Days with 10 cm or more snowfall	13	2	1929	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1898.

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Data for Dialville 2 W 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).

Dialville 2 W Threshold Days by Year (USC00412444)

Key Facts for Dialville 2 W Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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