Record envelope, standing records and threshold days for Blacksburg (USC00440765), Virginia, United States, with 60 years of record.
Key Facts for Blacksburg
Blacksburg (USC00440765) is a weather station in Virginia, United States at 37.25 latitude and -80.42 longitude, 662 m (2,172 ft) above sea level.
The station reports from 1893 to 1952, 60 years of record.
1,464 records set at Blacksburg still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Blacksburg set a daily record low minimum temperature of -8.3 C (17.1 F) on 21 October 1952.
About the Station
Location: Virginia, United States, 37.25 latitude, -80.42 longitude.
Elevation: 662 m (2,172 ft).
Period of record: 1893 to 1952, 60 years.
Eligible elements: tmax, tmin, prcp, snow.
Daily Record Envelope and 2026
0 days at or beyond a record
Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Blacksburg. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Blacksburg, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
23.9 C (75.0 F)
-26.7 C (-16.1 F)
n/a
n/a
Feb
26.1 C (79.0 F)
-24.4 C (-11.9 F)
n/a
n/a
Mar
29.4 C (84.9 F)
-18.9 C (-2.0 F)
n/a
n/a
Apr
31.7 C (89.1 F)
-12.2 C (10.0 F)
n/a
n/a
May
33.9 C (93.0 F)
-3.9 C (25.0 F)
n/a
n/a
Jun
37.2 C (99.0 F)
0.6 C (33.1 F)
n/a
n/a
Jul
37.8 C (100.0 F)
1.1 C (34.0 F)
n/a
n/a
Aug
36.7 C (98.1 F)
1.7 C (35.1 F)
n/a
n/a
Sep
36.1 C (97.0 F)
-5.0 C (23.0 F)
n/a
n/a
Oct
32.8 C (91.0 F)
-10.0 C (14.0 F)
n/a
n/a
Nov
27.2 C (81.0 F)
-18.3 C (-0.9 F)
n/a
n/a
Dec
22.8 C (73.0 F)
-32.8 C (-27.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Blacksburg still stand. 1895 holds the most, with 52.
Standing records at Blacksburg by the year they were set
Year set
Standing records
1893
41
1894
18
1895
52
1896
26
1897
24
1898
23
1899
42
1900
32
1901
16
1902
35
1903
25
1904
26
1905
28
1906
25
1907
26
1908
21
1909
31
1910
21
1911
20
1912
15
1913
28
1914
38
1915
23
1916
19
1917
46
1918
33
1919
17
1920
23
1921
25
1922
15
1923
15
1924
17
1925
33
1926
22
1927
18
1928
19
1929
27
1930
42
1931
22
1932
27
1933
17
1934
32
1935
16
1936
28
1937
22
1938
8
1939
18
1940
20
1941
40
1942
22
1943
21
1944
14
1945
17
1946
22
1947
15
1948
23
1949
19
1950
21
1951
19
1952
14
All-Time Record Progression
5 new records
5 all-time records were set at Blacksburg between 22 July 1926 and 5 July 1949. Each dot is a new record.
When Blacksburg set new all-time records
Date
Kind
Detail
1926-07-22
Record high maximum temperature
Record high maximum temperature 37.8 C (100.0 F)
1934-07-21
Record high minimum temperature
Record high minimum temperature 23.3 C (73.9 F)
1934-07-23
Record high minimum temperature
Record high minimum temperature 25.0 C (77.0 F)
1940-08-14
Record daily precipitation
Record daily precipitation 113.8 mm (4.5 in)
1949-07-05
Record high minimum temperature
Record high minimum temperature 25.6 C (78.1 F)
Wettest Day of Each Month
Aug: 113.8 mm (4.5 in)
The wettest day on record for each calendar month at Blacksburg. The most was 113.8 mm (4.5 in) on 14 August 1940.
Record daily precipitation for each month at Blacksburg
Month
Record daily precipitation (mm)
Date
Jan
48.3 mm (1.9 in)
10 January 1921
Feb
64.0 mm (2.5 in)
8 February 1905
Mar
52.1 mm (2.1 in)
17 March 1936
Apr
51.1 mm (2.0 in)
13 April 1949
May
63.8 mm (2.5 in)
6 May 1898
Jun
97.5 mm (3.8 in)
18 June 1918
Jul
86.4 mm (3.4 in)
23 July 1900
Aug
113.8 mm (4.5 in)
14 August 1940
Sep
90.7 mm (3.6 in)
16 September 1903
Oct
80.3 mm (3.2 in)
22 October 1929
Nov
75.7 mm (3.0 in)
25 November 1900
Dec
57.7 mm (2.3 in)
29 December 1901
Period of Record Coverage
1893 to 1952
Complete yearUnder 90 percent of days
60 years of record at Blacksburg, 1893 to 1952. 3 years have data for under 90 percent of days and are left out of rankings: 1910, 1923, 1952.
Cooler than the station meanWarmer than the station mean
One stripe for each of 53 complete years at Blacksburg, 1893 to 1951. Blue stripes are years cooler than the station's own mean of 11.5 C (52.8 F); red stripes are warmer. The coolest year was 1917, at 9.8 C (49.6 F), and the warmest was 1949, at 12.8 C (55.1 F). The strongest colour marks a difference of 1.8 C (3.2 F).
Annual mean temperature at Blacksburg as warming stripes, 1893 to 1951
Year
Annual mean temperature
Difference from the station mean
1893
11.3 C
-0.23 C
1894
11.0 C
-0.51 C
1895
9.9 C
-1.62 C
1897
11.1 C
-0.41 C
1898
11.2 C
-0.32 C
1899
11.3 C
-0.21 C
1900
11.7 C
+0.12 C
1901
9.9 C
-1.62 C
1902
11.2 C
-0.32 C
1903
10.6 C
-0.98 C
1904
10.1 C
-1.39 C
1905
10.6 C
-0.92 C
1906
11.2 C
-0.36 C
1907
10.6 C
-0.91 C
1908
10.7 C
-0.80 C
1909
10.7 C
-0.88 C
1911
11.9 C
+0.35 C
1912
10.8 C
-0.71 C
1913
12.0 C
+0.43 C
1915
11.1 C
-0.39 C
1916
11.2 C
-0.29 C
1917
9.8 C
-1.74 C
1918
11.1 C
-0.46 C
1919
11.8 C
+0.26 C
1921
12.0 C
+0.51 C
1922
12.1 C
+0.56 C
1925
11.5 C
-0.04 C
1926
11.2 C
-0.30 C
1927
12.0 C
+0.47 C
1928
11.2 C
-0.34 C
1929
11.4 C
-0.13 C
1930
11.9 C
+0.37 C
1931
12.6 C
+1.07 C
1932
12.5 C
+0.97 C
1933
12.8 C
+1.25 C
1934
12.3 C
+0.76 C
1935
12.1 C
+0.56 C
1936
12.2 C
+0.71 C
1937
11.8 C
+0.29 C
1938
12.5 C
+0.97 C
1939
12.7 C
+1.13 C
1940
11.1 C
-0.48 C
1941
12.8 C
+1.26 C
1942
12.0 C
+0.43 C
1943
11.9 C
+0.34 C
1944
11.8 C
+0.22 C
1945
11.9 C
+0.37 C
1946
12.4 C
+0.87 C
1947
11.1 C
-0.48 C
1948
12.2 C
+0.70 C
1949
12.8 C
+1.31 C
1950
11.6 C
+0.10 C
1951
11.9 C
+0.40 C
The annual mean temperature here has risen by 0.3 C (0.2 to 0.4) per decade over 1893 to 1951. In Fahrenheit: 0.5 F (0.3 to 0.7) per decade. The slope is a straight line fitted to 53 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Blacksburg
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.3 C (0.2 to 0.4) per decade
0.5 F (0.3 to 0.7) per decade
1893 to 1951
53
Rise
Mean daily maximum
0.2 C (0.1 to 0.3) per decade
0.4 F (0.2 to 0.6) per decade
1893 to 1951
53
Rise
Mean daily minimum
0.4 C (0.2 to 0.5) per decade
0.6 F (0.4 to 0.8) per decade
1893 to 1951
53
Rise
A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.
Extremes by Year
1893 to 1952
Yearly extremes at Blacksburg: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
37.8 C (100.0 F)
1926
33.3 C (91.9 F)
60
Coldest night (TNn)
-32.8 C (-27.0 F)
1917
-17.8 C (0.0 F)
60
Wettest day (Rx1day)
113.8 mm (4.5 in)
1940
55.6 mm (2.2 in)
60
Wettest five days (Rx5day)
172.3 mm (6.8 in)
1940
92.6 mm (3.6 in)
60
Longest dry spell (CDD)
33 days
1920
17 days
60
Hottest day (TXx)
The hottest day of the year at Blacksburg, 1893 to 1952. The record is 37.8 C (100.0 F) in 1926, marked on the chart; the median year is 33.3 C (91.9 F).
Hottest day (TXx) at Blacksburg by year
Year
Hottest day (TXx)
1893
33.3 C (91.9 F)
1894
35.6 C (96.1 F)
1895
33.3 C (91.9 F)
1896
33.3 C (91.9 F)
1897
34.4 C (93.9 F)
1898
32.8 C (91.0 F)
1899
34.4 C (93.9 F)
1900
35.6 C (96.1 F)
1901
33.3 C (91.9 F)
1902
35.0 C (95.0 F)
1903
32.8 C (91.0 F)
1904
32.8 C (91.0 F)
1905
32.2 C (90.0 F)
1906
33.3 C (91.9 F)
1907
32.2 C (90.0 F)
1908
33.3 C (91.9 F)
1909
32.8 C (91.0 F)
1910
33.3 C (91.9 F)
1911
34.4 C (93.9 F)
1912
32.2 C (90.0 F)
1913
34.4 C (93.9 F)
1914
37.2 C (99.0 F)
1915
33.3 C (91.9 F)
1916
31.7 C (89.1 F)
1917
34.4 C (93.9 F)
1918
35.6 C (96.1 F)
1919
32.2 C (90.0 F)
1920
30.0 C (86.0 F)
1921
31.1 C (88.0 F)
1922
31.7 C (89.1 F)
1923
31.7 C (89.1 F)
1924
32.2 C (90.0 F)
1925
36.7 C (98.1 F)
1926
37.8 C (100.0 F)
1927
33.3 C (91.9 F)
1928
32.8 C (91.0 F)
1929
32.8 C (91.0 F)
1930
37.2 C (99.0 F)
1931
35.0 C (95.0 F)
1932
36.7 C (98.1 F)
1933
33.9 C (93.0 F)
1934
37.2 C (99.0 F)
1935
33.3 C (91.9 F)
1936
36.7 C (98.1 F)
1937
32.2 C (90.0 F)
1938
31.7 C (89.1 F)
1939
33.3 C (91.9 F)
1940
34.4 C (93.9 F)
1941
35.6 C (96.1 F)
1942
33.9 C (93.0 F)
1943
34.4 C (93.9 F)
1944
33.9 C (93.0 F)
1945
33.3 C (91.9 F)
1946
32.2 C (90.0 F)
1947
33.9 C (93.0 F)
1948
34.4 C (93.9 F)
1949
33.3 C (91.9 F)
1950
31.7 C (89.1 F)
1951
34.4 C (93.9 F)
1952
37.8 C (100.0 F)
Coldest night (TNn)
The coldest night of the year at Blacksburg, 1893 to 1952. The record is -32.8 C (-27.0 F) in 1917, marked on the chart; the median year is -17.8 C (0.0 F).
Coldest night (TNn) at Blacksburg by year
Year
Coldest night (TNn)
1893
-19.4 C (-2.9 F)
1894
-19.4 C (-2.9 F)
1895
-25.0 C (-13.0 F)
1896
-20.0 C (-4.0 F)
1897
-19.4 C (-2.9 F)
1898
-17.8 C (0.0 F)
1899
-23.9 C (-11.0 F)
1900
-18.9 C (-2.0 F)
1901
-17.8 C (0.0 F)
1902
-15.0 C (5.0 F)
1903
-18.3 C (-0.9 F)
1904
-21.1 C (-6.0 F)
1905
-20.0 C (-4.0 F)
1906
-15.0 C (5.0 F)
1907
-18.3 C (-0.9 F)
1908
-20.0 C (-4.0 F)
1909
-17.8 C (0.0 F)
1910
-15.0 C (5.0 F)
1911
-12.8 C (9.0 F)
1912
-21.7 C (-7.1 F)
1913
-14.4 C (6.1 F)
1914
-17.8 C (0.0 F)
1915
-14.4 C (6.1 F)
1916
-16.7 C (1.9 F)
1917
-32.8 C (-27.0 F)
1918
-26.7 C (-16.1 F)
1919
-17.8 C (0.0 F)
1920
-17.2 C (1.0 F)
1921
-15.6 C (3.9 F)
1922
-12.8 C (9.0 F)
1923
-15.0 C (5.0 F)
1924
-21.1 C (-6.0 F)
1925
-18.9 C (-2.0 F)
1926
-15.6 C (3.9 F)
1927
-18.3 C (-0.9 F)
1928
-19.4 C (-2.9 F)
1929
-17.8 C (0.0 F)
1930
-21.1 C (-6.0 F)
1931
-16.1 C (3.0 F)
1932
-20.0 C (-4.0 F)
1933
-17.8 C (0.0 F)
1934
-23.3 C (-9.9 F)
1935
-17.2 C (1.0 F)
1936
-22.8 C (-9.0 F)
1937
-13.3 C (8.1 F)
1938
-13.3 C (8.1 F)
1939
-12.2 C (10.0 F)
1940
-17.2 C (1.0 F)
1941
-16.1 C (3.0 F)
1942
-20.0 C (-4.0 F)
1943
-16.7 C (1.9 F)
1944
-16.7 C (1.9 F)
1945
-15.6 C (3.9 F)
1946
-15.6 C (3.9 F)
1947
-16.7 C (1.9 F)
1948
-17.8 C (0.0 F)
1949
-12.2 C (10.0 F)
1950
-16.1 C (3.0 F)
1951
-17.2 C (1.0 F)
1952
-12.8 C (9.0 F)
Wettest day (Rx1day)
The wettest day of the year at Blacksburg, 1893 to 1952. The record is 113.8 mm (4.5 in) in 1940, marked on the chart; the median year is 55.6 mm (2.2 in).
Wettest day (Rx1day) at Blacksburg by year
Year
Wettest day (Rx1day)
1893
46.7 mm (1.8 in)
1894
38.1 mm (1.5 in)
1895
50.0 mm (2.0 in)
1896
87.6 mm (3.4 in)
1897
45.7 mm (1.8 in)
1898
63.8 mm (2.5 in)
1899
51.6 mm (2.0 in)
1900
86.4 mm (3.4 in)
1901
70.4 mm (2.8 in)
1902
57.2 mm (2.3 in)
1903
90.7 mm (3.6 in)
1904
42.2 mm (1.7 in)
1905
64.0 mm (2.5 in)
1906
69.3 mm (2.7 in)
1907
52.6 mm (2.1 in)
1908
49.3 mm (1.9 in)
1909
50.8 mm (2.0 in)
1910
52.1 mm (2.1 in)
1911
55.6 mm (2.2 in)
1912
87.1 mm (3.4 in)
1913
63.2 mm (2.5 in)
1914
58.4 mm (2.3 in)
1915
39.6 mm (1.6 in)
1916
63.5 mm (2.5 in)
1917
46.7 mm (1.8 in)
1918
97.5 mm (3.8 in)
1919
47.5 mm (1.9 in)
1920
61.7 mm (2.4 in)
1921
75.4 mm (3.0 in)
1922
49.5 mm (1.9 in)
1923
74.9 mm (2.9 in)
1924
45.0 mm (1.8 in)
1925
31.8 mm (1.3 in)
1926
31.0 mm (1.2 in)
1927
75.2 mm (3.0 in)
1928
58.9 mm (2.3 in)
1929
80.3 mm (3.2 in)
1930
37.8 mm (1.5 in)
1931
78.7 mm (3.1 in)
1932
52.1 mm (2.1 in)
1933
45.0 mm (1.8 in)
1934
73.2 mm (2.9 in)
1935
60.5 mm (2.4 in)
1936
66.8 mm (2.6 in)
1937
61.0 mm (2.4 in)
1938
42.2 mm (1.7 in)
1939
64.8 mm (2.6 in)
1940
113.8 mm (4.5 in)
1941
44.2 mm (1.7 in)
1942
50.8 mm (2.0 in)
1943
63.5 mm (2.5 in)
1944
57.4 mm (2.3 in)
1945
47.0 mm (1.9 in)
1946
35.6 mm (1.4 in)
1947
48.5 mm (1.9 in)
1948
59.7 mm (2.4 in)
1949
55.6 mm (2.2 in)
1950
35.1 mm (1.4 in)
1951
37.3 mm (1.5 in)
1952
49.0 mm (1.9 in)
Wettest five days (Rx5day)
The wettest five days of the year at Blacksburg, 1893 to 1952. The record is 172.3 mm (6.8 in) in 1940, marked on the chart; the median year is 92.6 mm (3.6 in).
Wettest five days (Rx5day) at Blacksburg by year
Year
Wettest five days (Rx5day)
1893
24.6 mm (1.0 in)
1894
56.2 mm (2.2 in)
1895
75.8 mm (3.0 in)
1896
53.9 mm (2.1 in)
1897
93.7 mm (3.7 in)
1898
77.5 mm (3.1 in)
1899
118.9 mm (4.7 in)
1900
120.2 mm (4.7 in)
1901
115.1 mm (4.5 in)
1902
85.1 mm (3.4 in)
1903
94.8 mm (3.7 in)
1904
72.9 mm (2.9 in)
1905
108.3 mm (4.3 in)
1906
64.9 mm (2.6 in)
1907
104.7 mm (4.1 in)
1908
73.4 mm (2.9 in)
1909
76.2 mm (3.0 in)
1910
154.3 mm (6.1 in)
1911
62.2 mm (2.4 in)
1912
102.8 mm (4.0 in)
1913
100.5 mm (4.0 in)
1914
91.9 mm (3.6 in)
1915
91.7 mm (3.6 in)
1916
108.3 mm (4.3 in)
1917
104.9 mm (4.1 in)
1918
131.3 mm (5.2 in)
1919
100.9 mm (4.0 in)
1920
98.0 mm (3.9 in)
1921
115.3 mm (4.5 in)
1922
64.3 mm (2.5 in)
1923
130.3 mm (5.1 in)
1924
83.2 mm (3.3 in)
1925
60.1 mm (2.4 in)
1926
80.0 mm (3.1 in)
1927
83.8 mm (3.3 in)
1928
75.9 mm (3.0 in)
1929
93.3 mm (3.7 in)
1930
39.6 mm (1.6 in)
1931
111.9 mm (4.4 in)
1932
85.4 mm (3.4 in)
1933
111.8 mm (4.4 in)
1934
103.4 mm (4.1 in)
1935
90.0 mm (3.5 in)
1936
78.5 mm (3.1 in)
1937
115.4 mm (4.5 in)
1938
94.7 mm (3.7 in)
1939
130.3 mm (5.1 in)
1940
172.3 mm (6.8 in)
1941
112.0 mm (4.4 in)
1942
95.5 mm (3.8 in)
1943
123.1 mm (4.8 in)
1944
72.2 mm (2.8 in)
1945
97.5 mm (3.8 in)
1946
55.0 mm (2.2 in)
1947
70.1 mm (2.8 in)
1948
128.5 mm (5.1 in)
1949
87.4 mm (3.4 in)
1950
67.8 mm (2.7 in)
1951
74.9 mm (2.9 in)
1952
87.1 mm (3.4 in)
Longest dry spell (CDD)
The longest dry spell of the year at Blacksburg, 1893 to 1952. The record is 33 days in 1920, marked on the chart; the median year is 17 days.
Longest dry spell (CDD) at Blacksburg by year
Year
Longest dry spell (CDD)
1893
1 day
1894
10 days
1895
14 days
1896
1 day
1897
1 day
1898
17 days
1899
17 days
1900
17 days
1901
20 days
1902
18 days
1903
17 days
1904
19 days
1905
14 days
1906
16 days
1907
19 days
1908
20 days
1909
16 days
1910
21 days
1911
14 days
1912
15 days
1913
15 days
1914
23 days
1915
22 days
1916
15 days
1917
14 days
1918
17 days
1919
21 days
1920
33 days
1921
27 days
1922
24 days
1923
13 days
1924
26 days
1925
20 days
1926
13 days
1927
16 days
1928
13 days
1929
18 days
1930
19 days
1931
28 days
1932
13 days
1933
25 days
1934
17 days
1935
28 days
1936
19 days
1937
11 days
1938
22 days
1939
25 days
1940
16 days
1941
28 days
1942
26 days
1943
27 days
1944
23 days
1945
13 days
1946
15 days
1947
15 days
1948
13 days
1949
18 days
1950
17 days
1951
14 days
1952
21 days
Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.
Frost Dates and Growing Season
53 years with a frost
Across 53 years with a frost, the median last spring frost at Blacksburg falls on 29 April and the median first autumn frost on 8 October, which leaves a median of 159 days between them.
Fitted over all years, the growing season changes by +2.7 days per decade at this station.
Frost dates and growing season at Blacksburg
Measure
Median, all years
Earliest period
Recent period (1919 to 1951)
Recent against earliest
Fitted trend
Last spring frost
29 April
n/a
28 April
n/a
-1.6 days per decade
First autumn frost
8 October
n/a
9 October
n/a
+1.1 days per decade
Growing days
159 days
n/a
162 days
n/a
+2.7 days per decade
A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Blacksburg standing records by year: CSV or JSON. Field meanings are on the data page.
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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.