Mapleton No.2 Threshold Days by Year (USC00135123)
18 fixed thresholds counted per year at Mapleton No.2 (USC00135123): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Mapleton No.2 Thresholds
- Mapleton No.2: nights with a minimum temperature at or below 0 C (32 F) in 84 years, most in 2013 with 186.
- Mapleton No.2: nights with a minimum temperature at or below -10 C (14 F) in 84 years, most in 1955 with 87.
- Mapleton No.2: nights with a minimum temperature at or below -20 C (-4 F) in 84 years, most in 1978 with 34.
- Mapleton No.2: nights with a minimum temperature at or above 20 C (68 F) in 84 years, most in 1983 with 48.
- 18 fixed thresholds have at least one qualifying day at Mapleton No.2.
Days at or above 30 C (86 F)
83 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1938 | 73 | 82 |
| 1939 | 91 | 82 |
| 1940 | 54 | 52.8 |
| 1941 | 61 | 52.8 |
| 1942 | 45 | 52.8 |
| 1943 | 62 | 52.8 |
| 1944 | 49 | 52.8 |
| 1945 | 39 | 52.8 |
| 1946 | 43 | 52.8 |
| 1947 | 64 | 52.8 |
| 1948 | 63 | 52.8 |
| 1949 | 48 | 52.8 |
| 1950 | 20 | 46.2 |
| 1951 | 24 | 46.2 |
| 1952 | 45 | 46.2 |
| 1953 | 56 | 46.2 |
| 1954 | 52 | 46.2 |
| 1955 | 72 | 46.2 |
| 1956 | 69 | 46.2 |
| 1957 | 40 | 46.2 |
| 1958 | 33 | 46.2 |
| 1959 | 51 | 46.2 |
| 1960 | 32 | 35.1 |
| 1961 | 36 | 35.1 |
| 1962 | 27 | 35.1 |
| 1963 | 54 | 35.1 |
| 1964 | 45 | 35.1 |
| 1965 | 30 | 35.1 |
| 1966 | 42 | 35.1 |
| 1967 | 24 | 35.1 |
| 1968 | 42 | 35.1 |
| 1969 | 19 | 35.1 |
| 1970 | 68 | 43.7 |
| 1971 | 42 | 43.7 |
| 1972 | 30 | 43.7 |
| 1973 | 35 | 43.7 |
| 1974 | 32 | 43.7 |
| 1975 | 42 | 43.7 |
| 1976 | 59 | 43.7 |
| 1977 | 34 | 43.7 |
| 1978 | 53 | 43.7 |
| 1979 | 42 | 43.7 |
| 1980 | 61 | 51.7 |
| 1981 | 37 | 51.7 |
| 1982 | 20 | 51.7 |
| 1983 | 56 | 51.7 |
| 1984 | 51 | 51.7 |
| 1985 | 53 | 51.7 |
| 1986 | 40 | 51.7 |
| 1987 | 65 | 51.7 |
| 1988 | 77 | 51.7 |
| 1989 | 57 | 51.7 |
| 1990 | 52 | 43.9 |
| 1991 | 61 | 43.9 |
| 1992 | 19 | 43.9 |
| 1993 | 26 | 43.9 |
| 1994 | 42 | 43.9 |
| 1997 | 55 | 43.9 |
| 1998 | 55 | 43.9 |
| 1999 | 41 | 43.9 |
| 2002 | 59 | 49.3 |
| 2003 | 45 | 49.3 |
| 2004 | 41 | 49.3 |
| 2005 | 62 | 49.3 |
| 2006 | 70 | 49.3 |
| 2007 | 61 | 49.3 |
| 2008 | 31 | 49.3 |
| 2009 | 25 | 49.3 |
| 2010 | 56 | 42.6 |
| 2012 | 75 | 42.6 |
| 2013 | 40 | 42.6 |
| 2014 | 15 | 42.6 |
| 2015 | 31 | 42.6 |
| 2016 | 45 | 42.6 |
| 2017 | 46 | 42.6 |
| 2018 | 42 | 42.6 |
| 2019 | 33 | 42.6 |
| 2020 | 59 | 57.3 |
| 2021 | 60 | 57.3 |
| 2022 | 61 | 57.3 |
| 2024 | 42 | 57.3 |
| 2025 | 55 | 57.3 |
| 2026 | 67 | 57.3 |
| Year | First date | Last date |
|---|---|---|
| 1938 | 1938-06-05 | 1938-10-16 |
| 1939 | 1939-05-04 | 1939-09-28 |
| 1940 | 1940-05-12 | 1940-09-22 |
| 1941 | 1941-05-14 | 1941-09-20 |
| 1942 | 1942-04-29 | 1942-09-16 |
| 1943 | 1943-03-30 | 1943-09-05 |
| 1944 | 1944-05-14 | 1944-09-17 |
| 1945 | 1945-06-22 | 1945-10-18 |
| 1946 | 1946-06-06 | 1946-09-05 |
| 1947 | 1947-05-14 | 1947-10-21 |
| 1948 | 1948-04-18 | 1948-09-19 |
| 1949 | 1949-04-25 | 1949-09-20 |
| 1950 | 1950-05-23 | 1950-08-23 |
| 1951 | 1951-07-07 | 1951-10-02 |
| 1952 | 1952-04-28 | 1952-09-30 |
| 1953 | 1953-05-25 | 1953-10-14 |
| 1954 | 1954-04-14 | 1954-09-27 |
| 1955 | 1955-05-02 | 1955-09-17 |
| 1956 | 1956-05-18 | 1956-10-12 |
| 1957 | 1957-05-31 | 1957-09-01 |
| 1958 | 1958-05-11 | 1958-10-15 |
| 1959 | 1959-05-01 | 1959-09-08 |
| 1960 | 1960-04-22 | 1960-10-11 |
| 1961 | 1961-05-11 | 1961-09-10 |
| 1962 | 1962-04-25 | 1962-10-11 |
| 1963 | 1963-05-07 | 1963-10-06 |
| 1964 | 1964-04-16 | 1964-09-09 |
| 1965 | 1965-04-30 | 1965-08-26 |
| 1966 | 1966-05-04 | 1966-08-30 |
| 1967 | 1967-04-16 | 1967-09-07 |
| 1968 | 1968-03-30 | 1968-08-23 |
| 1969 | 1969-05-27 | 1969-10-03 |
| 1970 | 1970-04-28 | 1970-09-21 |
| 1971 | 1971-06-03 | 1971-09-08 |
| 1972 | 1972-04-06 | 1972-09-20 |
| 1973 | 1973-05-21 | 1973-08-30 |
| 1974 | 1974-06-14 | 1974-08-26 |
| 1975 | 1975-05-18 | 1975-10-13 |
| 1976 | 1976-05-20 | 1976-10-01 |
| 1977 | 1977-04-09 | 1977-09-06 |
| 1978 | 1978-03-31 | 1978-09-18 |
| 1979 | 1979-05-16 | 1979-09-10 |
| 1980 | 1980-04-20 | 1980-09-19 |
| 1981 | 1981-04-25 | 1981-09-30 |
| 1982 | 1982-06-06 | 1982-08-19 |
| 1983 | 1983-05-27 | 1983-09-17 |
| 1984 | 1984-06-05 | 1984-09-19 |
| 1985 | 1985-04-18 | 1985-09-19 |
| 1986 | 1986-03-29 | 1986-08-25 |
| 1987 | 1987-04-18 | 1987-09-26 |
| 1988 | 1988-04-08 | 1988-09-17 |
| 1989 | 1989-04-20 | 1989-09-06 |
| 1990 | 1990-05-07 | 1990-10-05 |
| 1991 | 1991-04-05 | 1991-09-29 |
| 1992 | 1992-04-30 | 1992-10-02 |
| 1993 | 1993-05-14 | 1993-09-12 |
| 1994 | 1994-04-18 | 1994-09-15 |
| 1997 | 1997-05-16 | 1997-10-07 |
| 1998 | 1998-05-18 | 1998-09-27 |
| 1999 | 1999-06-05 | 1999-09-08 |
| 2002 | 2002-04-16 | 2002-10-01 |
| 2003 | 2003-04-02 | 2003-10-20 |
| 2004 | 2004-04-17 | 2004-09-21 |
| 2005 | 2005-05-24 | 2005-10-05 |
| 2006 | 2006-04-11 | 2006-10-04 |
| 2007 | 2007-04-22 | 2007-10-08 |
| 2008 | 2008-05-26 | 2008-08-23 |
| 2009 | 2009-04-24 | 2009-08-16 |
| 2010 | 2010-04-02 | 2010-10-09 |
| 2012 | 2012-04-02 | 2012-09-12 |
| 2013 | 2013-05-15 | 2013-09-28 |
| 2014 | 2014-05-08 | 2014-08-25 |
| 2015 | 2015-03-17 | 2015-10-12 |
| 2016 | 2016-05-31 | 2016-09-24 |
| 2017 | 2017-05-09 | 2017-09-24 |
| 2018 | 2018-05-09 | 2018-10-04 |
| 2019 | 2019-05-17 | 2019-10-01 |
| 2020 | 2020-05-02 | 2020-09-27 |
| 2021 | 2021-04-27 | 2021-09-29 |
| 2022 | 2022-05-10 | 2022-09-21 |
| 2024 | 2024-05-19 | 2024-10-13 |
| 2025 | 2025-04-29 | 2025-10-05 |
| 2026 | 2026-03-22 | 2026-10-13 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 83 | 91 | 1939 | 67 |
| 35 C (95 F): Days | 64 | 28 | 1988 | 3 |
| 40 C (104 F): Days | 7 | 3 | 1988 | 1 |
| 90 F (32.2 C): Days | 83 | 55 | 1939 | 32 |
| 100 F (37.8 C): Days | 19 | 11 | 1988 | 1 |
| 0 C (32 F): Ice days (max | 83 | 87 | 1978 | 23 |
| 0 C (32 F): Frost days (min | 84 | 186 | 2013 | 88 |
| -10 C (14 F): Days with min | 84 | 87 | 1955 | 36 |
| -20 C (-4 F): Days with min | 84 | 34 | 1978 | 10 |
| -30 C (-22 F): Days with min | 34 | 4 | 2010 | 2 |
| 20 C (68 F): Tropical nights (min | 84 | 48 | 1983 | 27 |
| 25 C (77 F): Days with min | 29 | 4 | 1939 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 84 | 38 | 1951 | 21 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 84 | 14 | 2018 | 6 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 66 | 4 | 1938 | 3 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 5 | 1 | 1940 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 75 | 6 | 1961 | 2 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 3 | 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 1938.
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 (2026-10-17).