Idaho Springs Threshold Days by Year (USC00054234)
14 fixed thresholds counted per year at Idaho Springs (USC00054234): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Idaho Springs Thresholds
- Idaho Springs: nights with a minimum temperature at or below 0 C (32 F) in 62 years, most in 1951 with 237.
- Idaho Springs: nights with a minimum temperature at or below -10 C (14 F) in 62 years, most in 1944 with 87.
- Idaho Springs: days with a maximum temperature at or below 0 C (32 F) in 59 years, most in 1929 with 56.
- Idaho Springs: nights with a minimum temperature at or below -20 C (-4 F) in 58 years, most in 1948 with 19.
- 14 fixed thresholds have at least one qualifying day at Idaho Springs.
Days at or above 30 C (86 F)
48 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1906 | 1 | 1.5 |
| 1909 | 2 | 1.5 |
| 1910 | 9 | 5.3 |
| 1911 | 4 | 5.3 |
| 1913 | 6 | 5.3 |
| 1914 | 1 | 5.3 |
| 1915 | 3 | 5.3 |
| 1917 | 2 | 5.3 |
| 1918 | 5 | 5.3 |
| 1919 | 12 | 5.3 |
| 1920 | 1 | 2.2 |
| 1922 | 3 | 2.2 |
| 1924 | 4 | 2.2 |
| 1927 | 2 | 2.2 |
| 1928 | 2 | 2.2 |
| 1929 | 1 | 2.2 |
| 1931 | 7 | 5.1 |
| 1933 | 2 | 5.1 |
| 1934 | 3 | 5.1 |
| 1935 | 1 | 5.1 |
| 1936 | 3 | 5.1 |
| 1938 | 8 | 5.1 |
| 1939 | 12 | 5.1 |
| 1940 | 6 | 7 |
| 1943 | 15 | 7 |
| 1944 | 16 | 7 |
| 1945 | 3 | 7 |
| 1946 | 7 | 7 |
| 1947 | 6 | 7 |
| 1948 | 2 | 7 |
| 1949 | 1 | 7 |
| 1950 | 2 | 9.8 |
| 1951 | 5 | 9.8 |
| 1952 | 10 | 9.8 |
| 1953 | 9 | 9.8 |
| 1954 | 12 | 9.8 |
| 1955 | 3 | 9.8 |
| 1957 | 14 | 9.8 |
| 1958 | 21 | 9.8 |
| 1959 | 12 | 9.8 |
| 1960 | 24 | 10.6 |
| 1961 | 9 | 10.6 |
| 1962 | 15 | 10.6 |
| 1963 | 9 | 10.6 |
| 1964 | 6 | 10.6 |
| 1966 | 7 | 10.6 |
| 1969 | 4 | 10.6 |
| 1970 | 2 | 2 |
| Year | First date | Last date |
|---|---|---|
| 1906 | 1906-06-16 | 1906-06-16 |
| 1909 | 1909-07-17 | 1909-07-19 |
| 1910 | 1910-06-19 | 1910-08-07 |
| 1911 | 1911-06-25 | 1911-09-12 |
| 1913 | 1913-07-02 | 1913-08-08 |
| 1914 | 1914-08-16 | 1914-08-16 |
| 1915 | 1915-07-11 | 1915-07-17 |
| 1917 | 1917-06-29 | 1917-07-23 |
| 1918 | 1918-06-11 | 1918-08-01 |
| 1919 | 1919-06-27 | 1919-08-31 |
| 1920 | 1920-07-22 | 1920-07-22 |
| 1922 | 1922-06-09 | 1922-06-22 |
| 1924 | 1924-06-26 | 1924-08-03 |
| 1927 | 1927-07-17 | 1927-07-18 |
| 1928 | 1928-07-09 | 1928-07-10 |
| 1929 | 1929-06-28 | 1929-06-28 |
| 1931 | 1931-07-13 | 1931-08-15 |
| 1933 | 1933-07-28 | 1933-07-29 |
| 1934 | 1934-07-18 | 1934-07-20 |
| 1935 | 1935-07-26 | 1935-07-26 |
| 1936 | 1936-06-18 | 1936-08-25 |
| 1938 | 1938-07-10 | 1938-08-23 |
| 1939 | 1939-06-16 | 1939-07-21 |
| 1940 | 1940-06-18 | 1940-07-25 |
| 1943 | 1943-06-19 | 1943-08-28 |
| 1944 | 1944-06-20 | 1944-08-28 |
| 1945 | 1945-07-29 | 1945-09-06 |
| 1946 | 1946-06-05 | 1946-09-04 |
| 1947 | 1947-07-03 | 1947-08-04 |
| 1948 | 1948-07-13 | 1948-09-04 |
| 1949 | 1949-08-22 | 1949-08-22 |
| 1950 | 1950-06-24 | 1950-07-01 |
| 1951 | 1951-07-04 | 1951-07-19 |
| 1952 | 1952-06-12 | 1952-09-04 |
| 1953 | 1953-06-10 | 1953-08-27 |
| 1954 | 1954-06-20 | 1954-08-31 |
| 1955 | 1955-07-06 | 1955-07-10 |
| 1957 | 1957-06-29 | 1957-08-19 |
| 1958 | 1958-06-27 | 1958-09-12 |
| 1959 | 1959-06-07 | 1959-09-06 |
| 1960 | 1960-06-17 | 1960-09-04 |
| 1961 | 1961-06-21 | 1961-08-06 |
| 1962 | 1962-06-27 | 1962-08-29 |
| 1963 | 1963-06-24 | 1963-07-30 |
| 1964 | 1964-07-03 | 1964-08-10 |
| 1966 | 1966-07-04 | 1966-08-16 |
| 1969 | 1969-08-06 | 1969-08-10 |
| 1970 | 1970-06-26 | 1970-08-02 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 48 | 24 | 1960 | 2 |
| 90 F (32.2 C): Days | 19 | 5 | 1939 | 2 |
| 0 C (32 F): Ice days (max | 59 | 56 | 1929 | 20 |
| 0 C (32 F): Frost days (min | 62 | 237 | 1951 | 222 |
| -10 C (14 F): Days with min | 62 | 87 | 1944 | 53 |
| -20 C (-4 F): Days with min | 58 | 19 | 1948 | 3 |
| -30 C (-22 F): Days with min | 10 | 4 | 1933 | 2 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 58 | 17 | 1906 | 9 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 40 | 6 | 1957 | 2 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 8 | 1 | 1926 | 1 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 1 | 1 | 1969 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 46 | 12 | 1945 | 8 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 24 | 4 | 1957 | 2 |
| 50 cm (19.7 in): Days with 50 cm or more snowfall | 4 | 1 | 1933 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1906.
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).