Harrisburg - Coop Threshold Days by Year (USC00363711)
17 fixed thresholds counted per year at Harrisburg - Coop (USC00363711): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Harrisburg - Coop Thresholds
- Harrisburg - Coop: days with a maximum temperature at or above 30 C (86 F) in 53 years, most in 1941 with 88.
- Harrisburg - Coop: days with a maximum temperature at or above 90 F (32.2 C) in 53 years, most in 1941 with 58.
- Harrisburg - Coop: days with a maximum temperature at or below 0 C (32 F) in 53 years, most in 1904 with 61.
- Harrisburg - Coop: nights with a minimum temperature at or below 0 C (32 F) in 53 years, most in 1904 with 131.
- 17 fixed thresholds have at least one qualifying day at Harrisburg - Coop.
Days at or above 30 C (86 F)
53 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1889 | 14 | 14 |
| 1890 | 24 | 35.9 |
| 1891 | 29 | 35.9 |
| 1892 | 33 | 35.9 |
| 1893 | 37 | 35.9 |
| 1894 | 39 | 35.9 |
| 1895 | 46 | 35.9 |
| 1896 | 35 | 35.9 |
| 1897 | 29 | 35.9 |
| 1898 | 48 | 35.9 |
| 1899 | 39 | 35.9 |
| 1900 | 64 | 32.1 |
| 1901 | 45 | 32.1 |
| 1902 | 25 | 32.1 |
| 1903 | 26 | 32.1 |
| 1904 | 17 | 32.1 |
| 1905 | 21 | 32.1 |
| 1906 | 34 | 32.1 |
| 1907 | 23 | 32.1 |
| 1908 | 34 | 32.1 |
| 1909 | 32 | 32.1 |
| 1910 | 30 | 33.6 |
| 1911 | 45 | 33.6 |
| 1912 | 28 | 33.6 |
| 1913 | 37 | 33.6 |
| 1914 | 37 | 33.6 |
| 1915 | 33 | 33.6 |
| 1916 | 34 | 33.6 |
| 1917 | 24 | 33.6 |
| 1918 | 34 | 33.6 |
| 1919 | 34 | 33.6 |
| 1920 | 21 | 33.4 |
| 1921 | 47 | 33.4 |
| 1922 | 38 | 33.4 |
| 1923 | 35 | 33.4 |
| 1924 | 27 | 33.4 |
| 1925 | 45 | 33.4 |
| 1926 | 29 | 33.4 |
| 1927 | 17 | 33.4 |
| 1928 | 31 | 33.4 |
| 1929 | 44 | 33.4 |
| 1930 | 58 | 47.4 |
| 1931 | 52 | 47.4 |
| 1932 | 49 | 47.4 |
| 1933 | 46 | 47.4 |
| 1934 | 45 | 47.4 |
| 1935 | 38 | 47.4 |
| 1936 | 45 | 47.4 |
| 1937 | 41 | 47.4 |
| 1938 | 47 | 47.4 |
| 1939 | 53 | 47.4 |
| 1940 | 43 | 65.5 |
| 1941 | 88 | 65.5 |
| Year | First date | Last date |
|---|---|---|
| 1889 | 1889-05-08 | 1889-07-20 |
| 1890 | 1890-06-04 | 1890-09-07 |
| 1891 | 1891-05-09 | 1891-09-27 |
| 1892 | 1892-06-12 | 1892-08-25 |
| 1893 | 1893-05-23 | 1893-09-19 |
| 1894 | 1894-06-11 | 1894-09-10 |
| 1895 | 1895-05-10 | 1895-09-26 |
| 1896 | 1896-04-17 | 1896-09-12 |
| 1897 | 1897-06-25 | 1897-10-16 |
| 1898 | 1898-05-20 | 1898-09-18 |
| 1899 | 1899-05-01 | 1899-09-08 |
| 1900 | 1900-05-13 | 1900-10-06 |
| 1901 | 1901-04-30 | 1901-09-07 |
| 1902 | 1902-04-22 | 1902-09-08 |
| 1903 | 1903-04-30 | 1903-09-16 |
| 1904 | 1904-05-25 | 1904-09-03 |
| 1905 | 1905-06-18 | 1905-09-19 |
| 1906 | 1906-05-17 | 1906-09-19 |
| 1907 | 1907-05-14 | 1907-08-20 |
| 1908 | 1908-05-27 | 1908-10-17 |
| 1909 | 1909-05-06 | 1909-08-28 |
| 1910 | 1910-04-30 | 1910-09-06 |
| 1911 | 1911-05-11 | 1911-08-28 |
| 1912 | 1912-05-21 | 1912-09-11 |
| 1913 | 1913-05-02 | 1913-09-07 |
| 1914 | 1914-05-21 | 1914-09-23 |
| 1915 | 1915-04-25 | 1915-09-17 |
| 1916 | 1916-05-28 | 1916-09-08 |
| 1917 | 1917-05-18 | 1917-09-02 |
| 1918 | 1918-05-06 | 1918-08-25 |
| 1919 | 1919-05-05 | 1919-10-03 |
| 1920 | 1920-06-02 | 1920-08-30 |
| 1921 | 1921-04-25 | 1921-09-29 |
| 1922 | 1922-04-10 | 1922-10-06 |
| 1923 | 1923-06-02 | 1923-09-04 |
| 1924 | 1924-05-06 | 1924-09-01 |
| 1925 | 1925-04-24 | 1925-09-13 |
| 1926 | 1926-06-13 | 1926-09-25 |
| 1927 | 1927-06-10 | 1927-10-02 |
| 1928 | 1928-05-04 | 1928-09-16 |
| 1929 | 1929-04-07 | 1929-09-10 |
| 1930 | 1930-05-05 | 1930-09-26 |
| 1931 | 1931-05-28 | 1931-09-23 |
| 1932 | 1932-05-07 | 1932-09-20 |
| 1933 | 1933-05-20 | 1933-09-26 |
| 1934 | 1934-05-05 | 1934-08-24 |
| 1935 | 1935-04-27 | 1935-08-19 |
| 1936 | 1936-05-08 | 1936-09-12 |
| 1937 | 1937-05-22 | 1937-09-04 |
| 1938 | 1938-04-28 | 1938-09-04 |
| 1939 | 1939-05-06 | 1939-10-10 |
| 1940 | 1940-05-14 | 1940-09-21 |
| 1941 | 1941-04-14 | 1941-10-07 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 53 | 88 | 1941 | 88 |
| 35 C (95 F): Days | 40 | 21 | 1941 | 21 |
| 40 C (104 F): Days | 1 | 2 | 1918 | 2 |
| 90 F (32.2 C): Days | 53 | 58 | 1941 | 58 |
| 100 F (37.8 C): Days | 14 | 4 | 1936 | 2 |
| 0 C (32 F): Ice days (max | 53 | 61 | 1904 | 12 |
| 0 C (32 F): Frost days (min | 53 | 131 | 1904 | 100 |
| -10 C (14 F): Days with min | 52 | 33 | 1904 | 2 |
| -20 C (-4 F): Days with min | 9 | 3 | 1899 | 1 |
| 20 C (68 F): Tropical nights (min | 53 | 53 | 1900 | 36 |
| 25 C (77 F): Days with min | 10 | 7 | 1900 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 53 | 44 | 1889 | 23 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 53 | 15 | 1924 | 6 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 27 | 5 | 1924 | 2 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 5 | 1 | 1889 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 45 | 6 | 1894 | 3 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 8 | 2 | 1928 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1889.
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).