Koshkonong Threshold Days by Year (USC00234625)
18 fixed thresholds counted per year at Koshkonong (USC00234625): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Koshkonong Thresholds
- Koshkonong: days with a maximum temperature at or above 30 C (86 F) in 57 years, most in 1953 with 119.
- Koshkonong: days with a maximum temperature at or above 90 F (32.2 C) in 57 years, most in 1953 with 96.
- Koshkonong: days with a maximum temperature at or below 0 C (32 F) in 57 years, most in 1918 with 22.
- Koshkonong: nights with a minimum temperature at or below 0 C (32 F) in 57 years, most in 1947 with 101.
- 18 fixed thresholds have at least one qualifying day at Koshkonong.
Days at or above 30 C (86 F)
57 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1901 | 117 | 70.8 |
| 1902 | 77 | 70.8 |
| 1903 | 52 | 70.8 |
| 1904 | 54 | 70.8 |
| 1905 | 57 | 70.8 |
| 1906 | 58 | 70.8 |
| 1907 | 73 | 70.8 |
| 1908 | 67 | 70.8 |
| 1909 | 82 | 70.8 |
| 1910 | 59 | 78.2 |
| 1911 | 71 | 78.2 |
| 1912 | 68 | 78.2 |
| 1913 | 92 | 78.2 |
| 1914 | 91 | 78.2 |
| 1915 | 61 | 78.2 |
| 1916 | 93 | 78.2 |
| 1917 | 65 | 78.2 |
| 1918 | 85 | 78.2 |
| 1919 | 97 | 78.2 |
| 1920 | 66 | 75.9 |
| 1921 | 109 | 75.9 |
| 1922 | 86 | 75.9 |
| 1923 | 73 | 75.9 |
| 1924 | 59 | 75.9 |
| 1925 | 100 | 75.9 |
| 1926 | 77 | 75.9 |
| 1927 | 66 | 75.9 |
| 1928 | 57 | 75.9 |
| 1929 | 66 | 75.9 |
| 1930 | 76 | 83.6 |
| 1931 | 83 | 83.6 |
| 1932 | 91 | 83.6 |
| 1933 | 82 | 83.6 |
| 1934 | 94 | 83.6 |
| 1935 | 61 | 83.6 |
| 1936 | 104 | 83.6 |
| 1937 | 81 | 83.6 |
| 1938 | 81 | 83.6 |
| 1939 | 83 | 83.6 |
| 1940 | 60 | 81.4 |
| 1941 | 85 | 81.4 |
| 1942 | 70 | 81.4 |
| 1944 | 102 | 81.4 |
| 1945 | 67 | 81.4 |
| 1946 | 82 | 81.4 |
| 1947 | 99 | 81.4 |
| 1948 | 96 | 81.4 |
| 1949 | 72 | 81.4 |
| 1950 | 31 | 85.4 |
| 1952 | 100 | 85.4 |
| 1953 | 119 | 85.4 |
| 1954 | 109 | 85.4 |
| 1955 | 77 | 85.4 |
| 1956 | 100 | 85.4 |
| 1957 | 71 | 85.4 |
| 1958 | 80 | 85.4 |
| 1959 | 82 | 85.4 |
| Year | First date | Last date |
|---|---|---|
| 1901 | 1901-04-27 | 1901-10-01 |
| 1902 | 1902-04-20 | 1902-09-17 |
| 1903 | 1903-06-19 | 1903-09-15 |
| 1904 | 1904-05-23 | 1904-10-05 |
| 1905 | 1905-04-08 | 1905-09-25 |
| 1906 | 1906-04-29 | 1906-09-22 |
| 1907 | 1907-03-19 | 1907-10-02 |
| 1908 | 1908-05-19 | 1908-09-23 |
| 1909 | 1909-05-05 | 1909-10-05 |
| 1910 | 1910-03-22 | 1910-10-04 |
| 1911 | 1911-02-01 | 1911-09-28 |
| 1912 | 1912-04-15 | 1912-10-09 |
| 1913 | 1913-04-18 | 1913-09-10 |
| 1914 | 1914-05-05 | 1914-09-08 |
| 1915 | 1915-04-17 | 1915-11-06 |
| 1916 | 1916-03-21 | 1916-10-15 |
| 1917 | 1917-06-12 | 1917-10-16 |
| 1918 | 1918-04-02 | 1918-10-06 |
| 1919 | 1919-04-22 | 1919-10-10 |
| 1920 | 1920-05-22 | 1920-09-26 |
| 1921 | 1921-05-21 | 1921-09-29 |
| 1922 | 1922-04-06 | 1922-10-06 |
| 1923 | 1923-04-23 | 1923-09-30 |
| 1924 | 1924-04-15 | 1924-09-21 |
| 1925 | 1925-04-19 | 1925-09-21 |
| 1926 | 1926-05-24 | 1926-10-04 |
| 1927 | 1927-04-19 | 1927-10-29 |
| 1928 | 1928-05-02 | 1928-10-13 |
| 1929 | 1929-03-23 | 1929-09-28 |
| 1930 | 1930-04-10 | 1930-09-14 |
| 1931 | 1931-05-16 | 1931-10-10 |
| 1932 | 1932-04-21 | 1932-09-18 |
| 1933 | 1933-05-09 | 1933-09-30 |
| 1934 | 1934-05-07 | 1934-09-24 |
| 1935 | 1935-05-31 | 1935-09-24 |
| 1936 | 1936-04-14 | 1936-09-22 |
| 1937 | 1937-04-17 | 1937-10-31 |
| 1938 | 1938-05-20 | 1938-10-15 |
| 1939 | 1939-05-23 | 1939-10-24 |
| 1940 | 1940-04-01 | 1940-10-05 |
| 1941 | 1941-05-20 | 1941-10-06 |
| 1942 | 1942-05-27 | 1942-09-18 |
| 1944 | 1944-05-13 | 1944-10-25 |
| 1945 | 1945-05-31 | 1945-09-23 |
| 1946 | 1946-04-01 | 1946-10-09 |
| 1947 | 1947-05-04 | 1947-10-22 |
| 1948 | 1948-04-07 | 1948-09-22 |
| 1949 | 1949-04-23 | 1949-09-04 |
| 1950 | 1950-05-17 | 1950-08-28 |
| 1952 | 1952-04-28 | 1952-10-02 |
| 1953 | 1953-05-22 | 1953-10-12 |
| 1954 | 1954-04-18 | 1954-10-05 |
| 1955 | 1955-04-22 | 1955-09-29 |
| 1956 | 1956-05-12 | 1956-10-06 |
| 1957 | 1957-05-12 | 1957-09-20 |
| 1958 | 1958-05-12 | 1958-09-26 |
| 1959 | 1959-04-30 | 1959-09-24 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 57 | 119 | 1953 | 82 |
| 35 C (95 F): Days | 53 | 59 | 1934 | 4 |
| 40 C (104 F): Days | 9 | 20 | 1934 | 2 |
| 90 F (32.2 C): Days | 57 | 96 | 1953 | 36 |
| 100 F (37.8 C): Days | 30 | 34 | 1934 | 1 |
| 110 F (43.3 C): Days | 2 | 3 | 1934 | 3 |
| 0 C (32 F): Ice days (max | 57 | 22 | 1918 | 4 |
| 0 C (32 F): Frost days (min | 57 | 101 | 1947 | 81 |
| -10 C (14 F): Days with min | 56 | 25 | 1917 | 12 |
| -20 C (-4 F): Days with min | 14 | 3 | 1918 | 2 |
| 20 C (68 F): Tropical nights (min | 57 | 116 | 1914 | 31 |
| 25 C (77 F): Days with min | 21 | 22 | 1930 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 56 | 53 | 1927 | 41 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 56 | 22 | 1945 | 11 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 51 | 10 | 1945 | 1 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 12 | 2 | 1925 | 2 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 23 | 6 | 1918 | 1 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 2 | 1 | 1918 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1901.
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).