Record envelope, standing records and threshold days for Piedmont (USC00467004), West Virginia, United States, with 53 years of record.
Key Facts for Piedmont
Piedmont (USC00467004) is a weather station in West Virginia, United States at 39.48 latitude and -79.03 longitude, 320 m (1,050 ft) above sea level.
The station reports from 1914 to 1966, 53 years of record.
1,464 records set at Piedmont still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Piedmont tied a daily record high minimum temperature of 21.1 C (70.0 F) on 28 June 1966.
About the Station
Location: West Virginia, United States, 39.48 latitude, -79.03 longitude.
Elevation: 320 m (1,050 ft).
Period of record: 1914 to 1966, 53 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.
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 Piedmont. 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 Piedmont, 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)
-26.1 C (-15.0 F)
n/a
n/a
Feb
28.9 C (84.0 F)
-23.9 C (-11.0 F)
n/a
n/a
Mar
31.1 C (88.0 F)
-17.8 C (0.0 F)
n/a
n/a
Apr
33.9 C (93.0 F)
-13.9 C (7.0 F)
n/a
n/a
May
35.6 C (96.1 F)
-3.3 C (26.1 F)
n/a
n/a
Jun
37.2 C (99.0 F)
0.6 C (33.1 F)
n/a
n/a
Jul
38.9 C (102.0 F)
5.0 C (41.0 F)
n/a
n/a
Aug
40.0 C (104.0 F)
3.9 C (39.0 F)
n/a
n/a
Sep
38.9 C (102.0 F)
-2.2 C (28.0 F)
n/a
n/a
Oct
36.1 C (97.0 F)
-7.8 C (18.0 F)
n/a
n/a
Nov
28.3 C (82.9 F)
-18.9 C (-2.0 F)
n/a
n/a
Dec
23.9 C (75.0 F)
-22.8 C (-9.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Piedmont still stand. 1930 holds the most, with 53.
Standing records at Piedmont by the year they were set
Year set
Standing records
1914
10
1915
17
1916
26
1917
34
1918
34
1919
22
1920
24
1921
27
1922
24
1923
32
1924
24
1925
47
1926
34
1927
51
1928
23
1929
35
1930
53
1931
31
1932
34
1933
25
1934
38
1935
32
1936
43
1937
23
1938
25
1939
21
1940
41
1941
26
1942
26
1943
36
1944
20
1945
24
1946
25
1947
27
1948
20
1949
30
1950
14
1951
29
1952
23
1953
31
1954
30
1955
22
1956
24
1957
28
1958
21
1959
18
1960
25
1961
17
1962
28
1963
35
1964
19
1965
24
1966
12
All-Time Record Progression
6 new records
6 all-time records were set at Piedmont between 16 October 1954 and 31 August 1964. Each dot is a new record.
When Piedmont set new all-time records
Date
Kind
Detail
1954-10-16
Record daily precipitation
Record daily precipitation 129.5 mm (5.1 in)
1960-12-12
Record daily snowfall
Record daily snowfall 40.6 cm (16.0 in)
1960-12-12
Record snow depth
Record snow depth 40.6 cm (16.0 in)
1961-02-09
Record snow depth
Record snow depth 68.6 cm (27.0 in)
1962-03-06
Record daily snowfall
Record daily snowfall 61.0 cm (24.0 in)
1964-08-31
Record daily precipitation
Record daily precipitation 157.0 mm (6.2 in)
Wettest Day of Each Month
Aug: 157.0 mm (6.2 in)
The wettest day on record for each calendar month at Piedmont. The most was 157.0 mm (6.2 in) on 31 August 1964.
Record daily precipitation for each month at Piedmont
Month
Record daily precipitation (mm)
Date
Jan
51.8 mm (2.0 in)
1 January 1948
Feb
53.3 mm (2.1 in)
1 February 1951
Mar
94.5 mm (3.7 in)
17 March 1936
Apr
66.0 mm (2.6 in)
29 April 1964
May
56.1 mm (2.2 in)
12 May 1932
Jun
67.1 mm (2.6 in)
8 June 1955
Jul
76.7 mm (3.0 in)
4 July 1941
Aug
157.0 mm (6.2 in)
31 August 1964
Sep
67.1 mm (2.6 in)
22 September 1950
Oct
129.5 mm (5.1 in)
16 October 1954
Nov
53.3 mm (2.1 in)
22 November 1952
Dec
45.7 mm (1.8 in)
16 December 1948
Period of Record Coverage
1914 to 1966
Complete yearUnder 90 percent of days
53 years of record at Piedmont, 1914 to 1966. 6 years have data for under 90 percent of days and are left out of rankings: 1914, 1915, 1948, 1949, 1950, 1966.
Cooler than the station meanWarmer than the station mean
One stripe for each of 46 complete years at Piedmont, 1916 to 1965. Blue stripes are years cooler than the station's own mean of 11.1 C (52.0 F); red stripes are warmer. The coolest year was 1917, at 9.7 C (49.5 F), and the warmest was 1953, at 12.4 C (54.2 F). The strongest colour marks a difference of 1.5 C (2.7 F).
Annual mean temperature at Piedmont as warming stripes, 1916 to 1965
Year
Annual mean temperature
Difference from the station mean
1916
10.3 C
-0.85 C
1917
9.7 C
-1.40 C
1918
10.9 C
-0.27 C
1919
11.6 C
+0.49 C
1920
10.2 C
-0.97 C
1922
11.9 C
+0.74 C
1923
11.3 C
+0.15 C
1924
9.8 C
-1.33 C
1925
10.8 C
-0.35 C
1926
10.3 C
-0.83 C
1927
11.3 C
+0.21 C
1928
10.5 C
-0.67 C
1929
11.0 C
-0.18 C
1930
11.1 C
-0.02 C
1931
12.2 C
+1.06 C
1932
11.6 C
+0.42 C
1933
11.7 C
+0.54 C
1934
11.1 C
-0.02 C
1935
10.7 C
-0.41 C
1936
11.0 C
-0.17 C
1937
10.9 C
-0.20 C
1938
11.8 C
+0.63 C
1939
12.0 C
+0.83 C
1940
10.1 C
-1.04 C
1941
11.4 C
+0.28 C
1942
11.1 C
+0.01 C
1943
11.0 C
-0.11 C
1944
11.3 C
+0.14 C
1945
11.4 C
+0.22 C
1946
12.0 C
+0.89 C
1947
11.5 C
+0.40 C
1951
11.3 C
+0.20 C
1952
11.9 C
+0.74 C
1953
12.4 C
+1.23 C
1954
11.4 C
+0.30 C
1955
11.5 C
+0.40 C
1956
11.2 C
+0.06 C
1957
11.7 C
+0.54 C
1958
10.1 C
-1.00 C
1959
11.9 C
+0.80 C
1960
10.6 C
-0.51 C
1961
11.4 C
+0.23 C
1962
10.6 C
-0.55 C
1963
10.5 C
-0.65 C
1964
11.2 C
+0.04 C
1965
11.2 C
+0.11 C
The fitted trend in annual mean temperature here over 1916 to 1965 is 0.11 C (-0.02 to 0.24) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.20 F (-0.03 to 0.42) per decade. The slope is a straight line fitted to 46 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Piedmont
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.11 C (-0.02 to 0.24) per decade
0.20 F (-0.03 to 0.42) per decade
1916 to 1965
46
Not clearly different from zero
Mean daily maximum
0.15 C (-0.02 to 0.32) per decade
0.27 F (-0.03 to 0.58) per decade
1916 to 1965
46
Not clearly different from zero
Mean daily minimum
0.1 C (-0.1 to 0.2) per decade
0.1 F (-0.1 to 0.3) per decade
1916 to 1965
46
Not clearly different from zero
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
1914 to 1966
Yearly extremes at Piedmont: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
40.0 C (104.0 F)
1918
35.6 C (96.1 F)
53
Coldest night (TNn)
-26.1 C (-15.0 F)
1925
-18.3 C (-0.9 F)
53
Wettest day (Rx1day)
157.0 mm (6.2 in)
1964
51.3 mm (2.0 in)
53
Wettest five days (Rx5day)
191.9 mm (7.6 in)
1942
85.7 mm (3.4 in)
53
Longest dry spell (CDD)
53 days
1926
20 days
53
Hottest day (TXx)
The hottest day of the year at Piedmont, 1914 to 1966. The record is 40.0 C (104.0 F) in 1918, marked on the chart; the median year is 35.6 C (96.1 F).
Hottest day (TXx) at Piedmont by year
Year
Hottest day (TXx)
1914
35.6 C (96.1 F)
1915
35.6 C (96.1 F)
1916
36.7 C (98.1 F)
1917
35.6 C (96.1 F)
1918
40.0 C (104.0 F)
1919
36.7 C (98.1 F)
1920
32.2 C (90.0 F)
1921
35.0 C (95.0 F)
1922
36.1 C (97.0 F)
1923
35.0 C (95.0 F)
1924
34.4 C (93.9 F)
1925
35.6 C (96.1 F)
1926
37.8 C (100.0 F)
1927
36.1 C (97.0 F)
1928
33.3 C (91.9 F)
1929
35.6 C (96.1 F)
1930
38.9 C (102.0 F)
1931
37.2 C (99.0 F)
1932
36.7 C (98.1 F)
1933
35.6 C (96.1 F)
1934
38.3 C (100.9 F)
1935
33.9 C (93.0 F)
1936
38.3 C (100.9 F)
1937
35.6 C (96.1 F)
1938
36.1 C (97.0 F)
1939
33.9 C (93.0 F)
1940
35.6 C (96.1 F)
1941
35.6 C (96.1 F)
1942
35.0 C (95.0 F)
1943
36.7 C (98.1 F)
1944
37.2 C (99.0 F)
1945
35.6 C (96.1 F)
1946
35.6 C (96.1 F)
1947
35.0 C (95.0 F)
1948
37.2 C (99.0 F)
1949
35.6 C (96.1 F)
1950
33.9 C (93.0 F)
1951
36.1 C (97.0 F)
1952
37.8 C (100.0 F)
1953
38.9 C (102.0 F)
1954
38.9 C (102.0 F)
1955
37.2 C (99.0 F)
1956
36.1 C (97.0 F)
1957
37.8 C (100.0 F)
1958
35.0 C (95.0 F)
1959
37.8 C (100.0 F)
1960
33.9 C (93.0 F)
1961
36.1 C (97.0 F)
1962
36.1 C (97.0 F)
1963
35.0 C (95.0 F)
1964
36.1 C (97.0 F)
1965
35.6 C (96.1 F)
1966
34.4 C (93.9 F)
Coldest night (TNn)
The coldest night of the year at Piedmont, 1914 to 1966. The record is -26.1 C (-15.0 F) in 1925, marked on the chart; the median year is -18.3 C (-0.9 F).
Coldest night (TNn) at Piedmont by year
Year
Coldest night (TNn)
1914
-3.3 C (26.1 F)
1915
-11.1 C (12.0 F)
1916
-17.8 C (0.0 F)
1917
-22.8 C (-9.0 F)
1918
-23.9 C (-11.0 F)
1919
-20.0 C (-4.0 F)
1920
-17.2 C (1.0 F)
1921
-18.3 C (-0.9 F)
1922
-17.8 C (0.0 F)
1923
-16.1 C (3.0 F)
1924
-18.9 C (-2.0 F)
1925
-26.1 C (-15.0 F)
1926
-19.4 C (-2.9 F)
1927
-16.1 C (3.0 F)
1928
-17.2 C (1.0 F)
1929
-17.2 C (1.0 F)
1930
-18.9 C (-2.0 F)
1931
-12.2 C (10.0 F)
1932
-15.0 C (5.0 F)
1933
-18.9 C (-2.0 F)
1934
-23.9 C (-11.0 F)
1935
-21.1 C (-6.0 F)
1936
-23.9 C (-11.0 F)
1937
-16.1 C (3.0 F)
1938
-15.6 C (3.9 F)
1939
-15.6 C (3.9 F)
1940
-19.4 C (-2.9 F)
1941
-13.9 C (7.0 F)
1942
-21.7 C (-7.1 F)
1943
-18.3 C (-0.9 F)
1944
-18.3 C (-0.9 F)
1945
-15.0 C (5.0 F)
1946
-20.6 C (-5.1 F)
1947
-17.2 C (1.0 F)
1948
-20.0 C (-4.0 F)
1949
-15.0 C (5.0 F)
1950
-18.3 C (-0.9 F)
1951
-21.1 C (-6.0 F)
1952
-13.3 C (8.1 F)
1953
-10.0 C (14.0 F)
1954
-17.8 C (0.0 F)
1955
-18.3 C (-0.9 F)
1956
-14.4 C (6.1 F)
1957
-18.3 C (-0.9 F)
1958
-20.6 C (-5.1 F)
1959
-16.1 C (3.0 F)
1960
-20.0 C (-4.0 F)
1961
-19.4 C (-2.9 F)
1962
-17.8 C (0.0 F)
1963
-24.4 C (-11.9 F)
1964
-16.7 C (1.9 F)
1965
-16.7 C (1.9 F)
1966
-18.3 C (-0.9 F)
Wettest day (Rx1day)
The wettest day of the year at Piedmont, 1914 to 1966. The record is 157.0 mm (6.2 in) in 1964, marked on the chart; the median year is 51.3 mm (2.0 in).
Wettest day (Rx1day) at Piedmont by year
Year
Wettest day (Rx1day)
1914
23.9 mm (0.9 in)
1915
74.7 mm (2.9 in)
1916
47.8 mm (1.9 in)
1917
68.1 mm (2.7 in)
1918
38.6 mm (1.5 in)
1919
43.4 mm (1.7 in)
1920
105.9 mm (4.2 in)
1921
46.7 mm (1.8 in)
1922
45.5 mm (1.8 in)
1923
36.8 mm (1.4 in)
1924
55.4 mm (2.2 in)
1925
43.2 mm (1.7 in)
1926
51.3 mm (2.0 in)
1927
56.6 mm (2.2 in)
1928
44.5 mm (1.8 in)
1929
57.2 mm (2.3 in)
1930
50.8 mm (2.0 in)
1931
35.8 mm (1.4 in)
1932
57.7 mm (2.3 in)
1933
45.7 mm (1.8 in)
1934
71.6 mm (2.8 in)
1935
40.1 mm (1.6 in)
1936
94.5 mm (3.7 in)
1937
76.2 mm (3.0 in)
1938
42.9 mm (1.7 in)
1939
47.8 mm (1.9 in)
1940
46.7 mm (1.8 in)
1941
76.7 mm (3.0 in)
1942
119.6 mm (4.7 in)
1943
37.6 mm (1.5 in)
1944
63.8 mm (2.5 in)
1945
57.4 mm (2.3 in)
1946
49.0 mm (1.9 in)
1947
77.2 mm (3.0 in)
1948
63.5 mm (2.5 in)
1949
52.8 mm (2.1 in)
1950
67.1 mm (2.6 in)
1951
53.3 mm (2.1 in)
1952
53.3 mm (2.1 in)
1953
29.7 mm (1.2 in)
1954
129.5 mm (5.1 in)
1955
70.1 mm (2.8 in)
1956
55.9 mm (2.2 in)
1957
63.5 mm (2.5 in)
1958
31.8 mm (1.3 in)
1959
97.0 mm (3.8 in)
1960
51.3 mm (2.0 in)
1961
42.7 mm (1.7 in)
1962
50.8 mm (2.0 in)
1963
40.6 mm (1.6 in)
1964
157.0 mm (6.2 in)
1965
40.1 mm (1.6 in)
1966
39.6 mm (1.6 in)
Wettest five days (Rx5day)
The wettest five days of the year at Piedmont, 1914 to 1966. The record is 191.9 mm (7.6 in) in 1942, marked on the chart; the median year is 85.7 mm (3.4 in).
Wettest five days (Rx5day) at Piedmont by year
Year
Wettest five days (Rx5day)
1914
29.5 mm (1.2 in)
1915
77.5 mm (3.1 in)
1916
52.9 mm (2.1 in)
1917
135.4 mm (5.3 in)
1918
112.6 mm (4.4 in)
1919
63.9 mm (2.5 in)
1920
105.9 mm (4.2 in)
1921
97.2 mm (3.8 in)
1922
83.8 mm (3.3 in)
1923
60.7 mm (2.4 in)
1924
139.2 mm (5.5 in)
1925
71.9 mm (2.8 in)
1926
120.9 mm (4.8 in)
1927
71.6 mm (2.8 in)
1928
85.7 mm (3.4 in)
1929
92.0 mm (3.6 in)
1930
52.3 mm (2.1 in)
1931
71.7 mm (2.8 in)
1932
112.5 mm (4.4 in)
1933
85.8 mm (3.4 in)
1934
89.4 mm (3.5 in)
1935
89.4 mm (3.5 in)
1936
147.3 mm (5.8 in)
1937
124.8 mm (4.9 in)
1938
62.5 mm (2.5 in)
1939
76.7 mm (3.0 in)
1940
76.6 mm (3.0 in)
1941
133.3 mm (5.2 in)
1942
191.9 mm (7.6 in)
1943
71.6 mm (2.8 in)
1944
94.8 mm (3.7 in)
1945
91.0 mm (3.6 in)
1946
62.0 mm (2.4 in)
1947
115.1 mm (4.5 in)
1948
90.2 mm (3.6 in)
1949
96.0 mm (3.8 in)
1950
76.3 mm (3.0 in)
1951
97.0 mm (3.8 in)
1952
82.5 mm (3.2 in)
1953
53.3 mm (2.1 in)
1954
140.0 mm (5.5 in)
1955
110.0 mm (4.3 in)
1956
77.7 mm (3.1 in)
1957
80.5 mm (3.2 in)
1958
69.4 mm (2.7 in)
1959
115.8 mm (4.6 in)
1960
95.8 mm (3.8 in)
1961
83.0 mm (3.3 in)
1962
75.0 mm (3.0 in)
1963
71.1 mm (2.8 in)
1964
157.0 mm (6.2 in)
1965
61.4 mm (2.4 in)
1966
45.3 mm (1.8 in)
Longest dry spell (CDD)
The longest dry spell of the year at Piedmont, 1914 to 1966. The record is 53 days in 1926, marked on the chart; the median year is 20 days.
Longest dry spell (CDD) at Piedmont by year
Year
Longest dry spell (CDD)
1914
18 days
1915
12 days
1916
20 days
1917
28 days
1918
17 days
1919
14 days
1920
20 days
1921
18 days
1922
25 days
1923
23 days
1924
27 days
1925
19 days
1926
53 days
1927
26 days
1928
26 days
1929
14 days
1930
21 days
1931
19 days
1932
20 days
1933
12 days
1934
19 days
1935
15 days
1936
22 days
1937
16 days
1938
22 days
1939
22 days
1940
14 days
1941
25 days
1942
17 days
1943
26 days
1944
25 days
1945
13 days
1946
18 days
1947
35 days
1948
13 days
1949
17 days
1950
17 days
1951
20 days
1952
22 days
1953
36 days
1954
25 days
1955
21 days
1956
15 days
1957
26 days
1958
16 days
1959
19 days
1960
17 days
1961
15 days
1962
19 days
1963
23 days
1964
26 days
1965
17 days
1966
30 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
46 years with a frost
Across 46 years with a frost, the median last spring frost at Piedmont falls on 29 April and the median first autumn frost on 7 October, which leaves a median of 164 days between them.
Fitted over all years, the growing season changes by 0.0 days per decade at this station.
Frost dates and growing season at Piedmont
Measure
Median, all years
Earliest period
Recent period (1933 to 1965)
Recent against earliest
Fitted trend
Last spring frost
29 April
n/a
29 April
n/a
-1.0 days per decade
First autumn frost
7 October
n/a
7 October
n/a
-1.0 days per decade
Growing days
164 days
n/a
168 days
n/a
0.0 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.
Rainfall Return Levels
49 years, 1916 to 1965
A day with at least 51.9 mm (2.0 in) of rain is expected about once in 2 years. A day with at least 171.8 mm (6.8 in) of rain is expected about once in 100 years.
Rainfall return levels at Piedmont: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
51.9 mm (2.0 in)
5 years
71.0 mm (2.8 in)
10 years
87.7 mm (3.5 in)
25 years
114.8 mm (4.5 in)
50 years
140.4 mm (5.5 in)
Longer than the 49 years of record
100 years
171.8 mm (6.8 in)
Longer than the 49 years of record
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 49 years of values from 1916 to 1965.
A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.
The largest wettest-day totals in the fit: 157.0 mm (6.2 in) in 1964; 129.5 mm (5.1 in) in 1954; 119.6 mm (4.7 in) in 1942.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Piedmont standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Piedmont 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.