Blacksburg Threshold Days by Year

16 fixed thresholds counted per year at Blacksburg (USC00440765): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Blacksburg Thresholds

Blacksburg: days with a maximum temperature at or above 30 C (86 F) in 57 years, most in 1941 with 67.
Blacksburg: days with a maximum temperature at or below 0 C (32 F) in 57 years, most in 1895 with 24.
Blacksburg: nights with a minimum temperature at or below 0 C (32 F) in 56 years, most in 1901 with 155.
Blacksburg: nights with a minimum temperature at or below -10 C (14 F) in 56 years, most in 1899 with 30.
16 fixed thresholds have at least one qualifying day at Blacksburg.

Days at or above 30 C (86 F)

57 years with a qualifying day

Days per year at Blacksburg with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 67 in 1941.

Days at or above 30 C (86 F) per year at Blacksburg
Year	Days	Decade average
1893	24	33.3
1894	32	33.3
1895	39	33.3
1896	31	33.3
1897	37	33.3
1898	30	33.3
1899	40	33.3
1900	53	26.5
1901	23	26.5
1902	46	26.5
1903	27	26.5
1904	16	26.5
1905	18	26.5
1906	21	26.5
1907	25	26.5
1908	22	26.5
1909	14	26.5
1911	36	32
1912	21	32
1913	40	32
1914	55	32
1915	29	32
1916	27	32
1917	27	32
1918	24	32
1919	29	32
1920	1	26.3
1921	7	26.3
1922	21	26.3
1924	24	26.3
1925	65	26.3
1926	44	26.3
1927	25	26.3
1928	23	26.3
1929	27	26.3
1930	63	42.4
1931	57	42.4
1932	51	42.4
1933	43	42.4
1934	55	42.4
1935	30	42.4
1936	61	42.4
1937	27	42.4
1938	16	42.4
1939	21	42.4
1940	20	35.9
1941	67	35.9
1942	30	35.9
1943	60	35.9
1944	46	35.9
1945	35	35.9
1946	20	35.9
1947	25	35.9
1948	25	35.9
1949	31	35.9
1950	5	25.5
1951	46	25.5

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

First to last qualifying date each year at Blacksburg
Year	First date	Last date
1893	1893-05-22	1893-09-15
1894	1894-05-17	1894-09-16
1895	1895-05-29	1895-09-26
1896	1896-04-17	1896-09-19
1897	1897-06-15	1897-10-15
1898	1898-05-21	1898-10-04
1899	1899-05-16	1899-09-08
1900	1900-05-14	1900-09-27
1901	1901-05-24	1901-08-11
1902	1902-05-05	1902-09-08
1903	1903-05-22	1903-09-08
1904	1904-05-25	1904-09-29
1905	1905-05-29	1905-08-22
1906	1906-05-18	1906-09-09
1907	1907-06-22	1907-09-18
1908	1908-06-20	1908-09-12
1909	1909-06-25	1909-08-29
1911	1911-05-11	1911-09-07
1912	1912-05-20	1912-09-11
1913	1913-05-03	1913-09-07
1914	1914-05-12	1914-09-23
1915	1915-04-26	1915-09-17
1916	1916-05-26	1916-09-08
1917	1917-05-21	1917-08-28
1918	1918-05-12	1918-08-26
1919	1919-05-31	1919-10-05
1920	1920-07-01	1920-07-01
1921	1921-04-26	1921-09-18
1922	1922-06-16	1922-10-05
1924	1924-06-18	1924-09-01
1925	1925-06-01	1925-09-27
1926	1926-05-08	1926-09-25
1927	1927-06-25	1927-10-01
1928	1928-05-04	1928-09-14
1929	1929-06-01	1929-09-29
1930	1930-05-07	1930-09-26
1931	1931-05-29	1931-09-23
1932	1932-05-08	1932-09-19
1933	1933-05-13	1933-10-01
1934	1934-05-07	1934-08-15
1935	1935-06-14	1935-08-21
1936	1936-05-08	1936-09-23
1937	1937-05-31	1937-09-04
1938	1938-05-04	1938-10-18
1939	1939-06-08	1939-09-28
1940	1940-05-08	1940-09-21
1941	1941-05-16	1941-10-08
1942	1942-04-30	1942-09-15
1943	1943-05-06	1943-09-06
1944	1944-05-20	1944-09-28
1945	1945-06-01	1945-09-29
1946	1946-06-09	1946-09-10
1947	1947-05-16	1947-09-14
1948	1948-05-11	1948-08-30
1949	1949-05-04	1949-08-27
1950	1950-05-05	1950-09-02
1951	1951-05-15	1951-10-07

Every Fixed Threshold

Fixed thresholds at Blacksburg
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	57	67	1941	46
35 C (95 F): Days	13	15	1930	1
90 F (32.2 C): Days	51	43	1930	11
100 F (37.8 C): Days	1	1	1926	1
0 C (32 F): Ice days (max	57	24	1895	13
0 C (32 F): Frost days (min	56	155	1901	120
-10 C (14 F): Days with min	56	30	1899	12
-20 C (-4 F): Days with min	15	6	1895	1
-30 C (-22 F): Days with min	1	1	1917	1
20 C (68 F): Tropical nights (min	38	18	1941	5
25 C (77 F): Days with min	2	1	1934	1
10 mm (0.39 in): Days with 10 mm or more rain	29	55	1918	35
25 mm (0.98 in): Days with 25 mm or more rain	29	24	1918	6
50 mm (1.97 in): Days with 50 mm or more rain	15	4	1920	2
10 cm (3.9 in): Days with 10 cm or more snowfall	11	7	1914	2
25 cm (9.8 in): Days with 25 cm or more snowfall	1	2	1914	2

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1893.

Download the Data

Data for Blacksburg 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).

Blacksburg Threshold Days by Year

Key Facts for Blacksburg Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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