Mackinaw 3WSW Threshold Days by Year (USC00115272)
15 fixed thresholds counted per year at Mackinaw 3WSW (USC00115272): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Mackinaw 3WSW Thresholds
- Mackinaw 3WSW: days with 10 mm (0.39 in) or more of precipitation in 63 years, most in 2009 with 50.
- Mackinaw 3WSW: days with 25 mm (0.98 in) or more of precipitation in 63 years, most in 1990 with 24.
- Mackinaw 3WSW: days with 50 mm (1.97 in) or more of precipitation in 53 years, most in 1950 with 6.
- Mackinaw 3WSW: days with 10 cm (3.9 in) or more of snowfall in 46 years, most in 1951 with 4.
- 15 fixed thresholds have at least one qualifying day at Mackinaw 3WSW.
Days with 10 mm (0.39 in) or more of precipitation
63 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1941 | 39 | 34.3 |
| 1943 | 30 | 34.3 |
| 1944 | 30 | 34.3 |
| 1945 | 35 | 34.3 |
| 1946 | 35 | 34.3 |
| 1947 | 38 | 34.3 |
| 1948 | 30 | 34.3 |
| 1949 | 37 | 34.3 |
| 1950 | 32 | 30.7 |
| 1951 | 38 | 30.7 |
| 1959 | 22 | 30.7 |
| 1960 | 30 | 30.4 |
| 1961 | 34 | 30.4 |
| 1962 | 25 | 30.4 |
| 1963 | 22 | 30.4 |
| 1964 | 28 | 30.4 |
| 1965 | 43 | 30.4 |
| 1966 | 29 | 30.4 |
| 1967 | 33 | 30.4 |
| 1968 | 31 | 30.4 |
| 1969 | 29 | 30.4 |
| 1970 | 34 | 31.3 |
| 1971 | 28 | 31.3 |
| 1972 | 28 | 31.3 |
| 1973 | 36 | 31.3 |
| 1974 | 31 | 31.3 |
| 1975 | 38 | 31.3 |
| 1976 | 29 | 31.3 |
| 1977 | 32 | 31.3 |
| 1978 | 33 | 31.3 |
| 1979 | 24 | 31.3 |
| 1980 | 25 | 32.3 |
| 1981 | 43 | 32.3 |
| 1982 | 39 | 32.3 |
| 1983 | 38 | 32.3 |
| 1984 | 36 | 32.3 |
| 1985 | 42 | 32.3 |
| 1986 | 30 | 32.3 |
| 1987 | 28 | 32.3 |
| 1988 | 22 | 32.3 |
| 1989 | 20 | 32.3 |
| 1990 | 47 | 33.7 |
| 1991 | 27 | 33.7 |
| 1992 | 28 | 33.7 |
| 1993 | 47 | 33.7 |
| 1994 | 31 | 33.7 |
| 1997 | 22 | 33.7 |
| 2001 | 32 | 33.9 |
| 2002 | 32 | 33.9 |
| 2003 | 31 | 33.9 |
| 2004 | 36 | 33.9 |
| 2005 | 23 | 33.9 |
| 2006 | 30 | 33.9 |
| 2007 | 32 | 33.9 |
| 2008 | 39 | 33.9 |
| 2009 | 50 | 33.9 |
| 2010 | 37 | 31.3 |
| 2011 | 31 | 31.3 |
| 2012 | 23 | 31.3 |
| 2013 | 28 | 31.3 |
| 2015 | 41 | 31.3 |
| 2017 | 28 | 31.3 |
| 2026 | 18 | 18 |
| Year | First date | Last date |
|---|---|---|
| 1941 | 1941-01-02 | 1941-12-24 |
| 1943 | 1943-01-03 | 1943-10-21 |
| 1944 | 1944-01-27 | 1944-12-10 |
| 1945 | 1945-01-15 | 1945-12-30 |
| 1946 | 1946-01-09 | 1946-12-29 |
| 1947 | 1947-01-02 | 1947-12-07 |
| 1948 | 1948-01-01 | 1948-12-28 |
| 1949 | 1949-01-10 | 1949-12-26 |
| 1950 | 1950-01-03 | 1950-11-20 |
| 1951 | 1951-01-02 | 1951-12-14 |
| 1959 | 1959-03-06 | 1959-12-27 |
| 1960 | 1960-01-12 | 1960-11-15 |
| 1961 | 1961-02-03 | 1961-12-23 |
| 1962 | 1962-01-06 | 1962-11-16 |
| 1963 | 1963-03-04 | 1963-11-22 |
| 1964 | 1964-03-05 | 1964-12-02 |
| 1965 | 1965-01-01 | 1965-12-25 |
| 1966 | 1966-01-12 | 1966-12-28 |
| 1967 | 1967-01-26 | 1967-12-21 |
| 1968 | 1968-02-01 | 1968-12-28 |
| 1969 | 1969-01-16 | 1969-12-07 |
| 1970 | 1970-03-25 | 1970-12-16 |
| 1971 | 1971-01-03 | 1971-12-30 |
| 1972 | 1972-03-13 | 1972-12-30 |
| 1973 | 1973-01-03 | 1973-12-19 |
| 1974 | 1974-01-20 | 1974-12-31 |
| 1975 | 1975-01-10 | 1975-12-29 |
| 1976 | 1976-01-13 | 1976-11-26 |
| 1977 | 1977-02-23 | 1977-12-20 |
| 1978 | 1978-02-13 | 1978-12-31 |
| 1979 | 1979-01-01 | 1979-12-24 |
| 1980 | 1980-03-24 | 1980-12-08 |
| 1981 | 1981-02-10 | 1981-12-17 |
| 1982 | 1982-01-02 | 1982-12-25 |
| 1983 | 1983-02-02 | 1983-12-11 |
| 1984 | 1984-02-12 | 1984-12-29 |
| 1985 | 1985-01-01 | 1985-12-11 |
| 1986 | 1986-02-04 | 1986-12-07 |
| 1987 | 1987-01-09 | 1987-12-28 |
| 1988 | 1988-01-19 | 1988-12-27 |
| 1989 | 1989-01-05 | 1989-12-29 |
| 1990 | 1990-01-16 | 1990-12-29 |
| 1991 | 1991-01-04 | 1991-12-08 |
| 1992 | 1992-01-13 | 1992-12-30 |
| 1993 | 1993-01-03 | 1993-12-02 |
| 1994 | 1994-01-25 | 1994-12-19 |
| 1997 | 1997-01-25 | 1997-12-10 |
| 2001 | 2001-01-28 | 2001-12-12 |
| 2002 | 2002-01-29 | 2002-12-18 |
| 2003 | 2003-02-14 | 2003-11-23 |
| 2004 | 2004-03-04 | 2004-12-07 |
| 2005 | 2005-01-03 | 2005-12-31 |
| 2006 | 2006-01-14 | 2006-12-21 |
| 2007 | 2007-01-04 | 2007-12-15 |
| 2008 | 2008-01-08 | 2008-12-28 |
| 2009 | 2009-02-27 | 2009-12-25 |
| 2010 | 2010-01-24 | 2010-12-31 |
| 2011 | 2011-01-01 | 2011-12-15 |
| 2012 | 2012-02-29 | 2012-12-20 |
| 2013 | 2013-01-30 | 2013-12-22 |
| 2015 | 2015-01-04 | 2015-12-29 |
| 2017 | 2017-01-17 | 2017-12-26 |
| 2026 | 2026-01-09 | 2026-08-20 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 2 | 89 | 1944 | 89 |
| 35 C (95 F): Days | 2 | 20 | 1944 | 20 |
| 90 F (32.2 C): Days | 2 | 59 | 1944 | 59 |
| 100 F (37.8 C): Days | 1 | 3 | 1944 | 3 |
| 0 C (32 F): Ice days (max | 2 | 34 | 1943 | 28 |
| 0 C (32 F): Frost days (min | 2 | 137 | 1943 | 124 |
| -10 C (14 F): Days with min | 2 | 32 | 1943 | 32 |
| -20 C (-4 F): Days with min | 2 | 5 | 1943 | 3 |
| 20 C (68 F): Tropical nights (min | 2 | 36 | 1943 | 22 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 63 | 50 | 2009 | 18 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 63 | 24 | 1990 | 9 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 53 | 6 | 1950 | 2 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 6 | 2 | 1986 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 46 | 4 | 1951 | 2 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 4 | 1 | 1973 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1943.
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 (2026-10-14).