Piedmont Threshold Days by Year
17 fixed thresholds counted per year at Piedmont (USC00467004): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Piedmont Thresholds
- Piedmont: days with 10 mm (0.39 in) or more of precipitation in 49 years, most in 1952 with 46.
- Piedmont: days with 25 mm (0.98 in) or more of precipitation in 49 years, most in 1937 with 13.
- Piedmont: nights with a minimum temperature at or below 0 C (32 F) in 48 years, most in 1960 with 141.
- Piedmont: nights with a minimum temperature at or below -10 C (14 F) in 48 years, most in 1963 with 37.
- 17 fixed thresholds have at least one qualifying day at Piedmont.
Days at or above 30 C (86 F)
47 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1916 | 29 | 38 |
| 1917 | 29 | 38 |
| 1918 | 44 | 38 |
| 1919 | 50 | 38 |
| 1920 | 24 | 39 |
| 1921 | 53 | 39 |
| 1922 | 52 | 39 |
| 1923 | 50 | 39 |
| 1924 | 21 | 39 |
| 1925 | 39 | 39 |
| 1926 | 35 | 39 |
| 1927 | 32 | 39 |
| 1928 | 31 | 39 |
| 1929 | 53 | 39 |
| 1930 | 67 | 54.2 |
| 1931 | 66 | 54.2 |
| 1932 | 59 | 54.2 |
| 1933 | 57 | 54.2 |
| 1934 | 55 | 54.2 |
| 1935 | 27 | 54.2 |
| 1936 | 65 | 54.2 |
| 1937 | 46 | 54.2 |
| 1938 | 46 | 54.2 |
| 1939 | 54 | 54.2 |
| 1940 | 35 | 49.5 |
| 1941 | 55 | 49.5 |
| 1942 | 44 | 49.5 |
| 1943 | 64 | 49.5 |
| 1944 | 60 | 49.5 |
| 1945 | 42 | 49.5 |
| 1946 | 38 | 49.5 |
| 1947 | 58 | 49.5 |
| 1951 | 63 | 66.3 |
| 1952 | 70 | 66.3 |
| 1953 | 80 | 66.3 |
| 1954 | 57 | 66.3 |
| 1955 | 61 | 66.3 |
| 1956 | 51 | 66.3 |
| 1957 | 72 | 66.3 |
| 1958 | 51 | 66.3 |
| 1959 | 92 | 66.3 |
| 1960 | 56 | 48.3 |
| 1961 | 59 | 48.3 |
| 1962 | 46 | 48.3 |
| 1963 | 31 | 48.3 |
| 1964 | 47 | 48.3 |
| 1965 | 51 | 48.3 |
| Year | First date | Last date |
|---|---|---|
| 1916 | 1916-05-15 | 1916-09-06 |
| 1917 | 1917-04-20 | 1917-09-02 |
| 1918 | 1918-05-06 | 1918-08-29 |
| 1919 | 1919-05-04 | 1919-10-03 |
| 1920 | 1920-06-01 | 1920-09-26 |
| 1921 | 1921-03-26 | 1921-09-30 |
| 1922 | 1922-04-10 | 1922-10-06 |
| 1923 | 1923-05-15 | 1923-09-04 |
| 1924 | 1924-06-19 | 1924-09-01 |
| 1925 | 1925-04-24 | 1925-09-20 |
| 1926 | 1926-05-01 | 1926-10-05 |
| 1927 | 1927-05-09 | 1927-10-07 |
| 1928 | 1928-05-04 | 1928-09-14 |
| 1929 | 1929-04-06 | 1929-09-29 |
| 1930 | 1930-04-11 | 1930-09-25 |
| 1931 | 1931-05-29 | 1931-10-07 |
| 1932 | 1932-05-16 | 1932-09-21 |
| 1933 | 1933-05-20 | 1933-10-01 |
| 1934 | 1934-05-06 | 1934-08-19 |
| 1935 | 1935-06-13 | 1935-08-22 |
| 1936 | 1936-05-07 | 1936-09-27 |
| 1937 | 1937-05-22 | 1937-09-04 |
| 1938 | 1938-04-27 | 1938-09-05 |
| 1939 | 1939-04-25 | 1939-10-09 |
| 1940 | 1940-05-06 | 1940-09-21 |
| 1941 | 1941-04-19 | 1941-10-07 |
| 1942 | 1942-04-26 | 1942-09-19 |
| 1943 | 1943-05-06 | 1943-09-06 |
| 1944 | 1944-05-03 | 1944-09-04 |
| 1945 | 1945-04-13 | 1945-09-28 |
| 1946 | 1946-04-22 | 1946-10-07 |
| 1947 | 1947-04-05 | 1947-10-23 |
| 1951 | 1951-05-16 | 1951-10-06 |
| 1952 | 1952-04-22 | 1952-10-02 |
| 1953 | 1953-05-11 | 1953-10-05 |
| 1954 | 1954-04-08 | 1954-10-14 |
| 1955 | 1955-05-05 | 1955-10-08 |
| 1956 | 1956-04-29 | 1956-09-24 |
| 1957 | 1957-04-24 | 1957-09-23 |
| 1958 | 1958-04-20 | 1958-09-27 |
| 1959 | 1959-05-03 | 1959-10-07 |
| 1960 | 1960-04-18 | 1960-09-10 |
| 1961 | 1961-05-16 | 1961-09-26 |
| 1962 | 1962-04-27 | 1962-09-14 |
| 1963 | 1963-04-20 | 1963-10-07 |
| 1964 | 1964-05-20 | 1964-09-18 |
| 1965 | 1965-05-03 | 1965-09-22 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 47 | 92 | 1959 | 51 |
| 35 C (95 F): Days | 41 | 24 | 1953 | 3 |
| 40 C (104 F): Days | 1 | 1 | 1918 | 1 |
| 90 F (32.2 C): Days | 47 | 50 | 1953 | 16 |
| 100 F (37.8 C): Days | 10 | 6 | 1930 | 1 |
| 0 C (32 F): Ice days (max | 47 | 44 | 1958 | 22 |
| 0 C (32 F): Frost days (min | 48 | 141 | 1960 | 115 |
| -10 C (14 F): Days with min | 48 | 37 | 1963 | 25 |
| -20 C (-4 F): Days with min | 14 | 5 | 1936 | 4 |
| 20 C (68 F): Tropical nights (min | 47 | 18 | 1931 | 15 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 49 | 46 | 1952 | 26 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 49 | 13 | 1937 | 8 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 28 | 3 | 1932 | 3 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 4 | 1 | 1920 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 39 | 7 | 1961 | 4 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 15 | 3 | 1944 | 1 |
| 50 cm (19.7 in): Days with 50 cm or more snowfall | 1 | 1 | 1962 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1916.
Download the Data
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 . Last revised (2025-12-31).