Hennepin Wtr Trmt Plt Threshold Days by Year (USC00114013)
18 fixed thresholds counted per year at Hennepin Wtr Trmt Plt (USC00114013): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Hennepin Wtr Trmt Plt Thresholds
- Hennepin Wtr Trmt Plt: nights with a minimum temperature at or below 0 C (32 F) in 44 years, most in 1976 with 160.
- Hennepin Wtr Trmt Plt: nights with a minimum temperature at or below -10 C (14 F) in 44 years, most in 1985 with 70.
- Hennepin Wtr Trmt Plt: nights with a minimum temperature at or above 20 C (68 F) in 44 years, most in 1995 with 34.
- Hennepin Wtr Trmt Plt: days with a maximum temperature at or above 30 C (86 F) in 43 years, most in 2005 with 85.
- 18 fixed thresholds have at least one qualifying day at Hennepin Wtr Trmt Plt.
Days at or above 30 C (86 F)
43 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1963 | 60 | 52.4 |
| 1964 | 65 | 52.4 |
| 1965 | 45 | 52.4 |
| 1966 | 56 | 52.4 |
| 1967 | 30 | 52.4 |
| 1968 | 51 | 52.4 |
| 1969 | 60 | 52.4 |
| 1970 | 52 | 51.5 |
| 1971 | 76 | 51.5 |
| 1972 | 52 | 51.5 |
| 1973 | 52 | 51.5 |
| 1974 | 38 | 51.5 |
| 1975 | 54 | 51.5 |
| 1976 | 53 | 51.5 |
| 1977 | 35 | 51.5 |
| 1978 | 60 | 51.5 |
| 1979 | 43 | 51.5 |
| 1980 | 63 | 55.2 |
| 1981 | 36 | 55.2 |
| 1982 | 42 | 55.2 |
| 1983 | 76 | 55.2 |
| 1985 | 43 | 55.2 |
| 1986 | 52 | 55.2 |
| 1987 | 66 | 55.2 |
| 1988 | 74 | 55.2 |
| 1989 | 45 | 55.2 |
| 1990 | 37 | 48.3 |
| 1991 | 80 | 48.3 |
| 1992 | 24 | 48.3 |
| 1993 | 25 | 48.3 |
| 1994 | 44 | 48.3 |
| 1995 | 66 | 48.3 |
| 1996 | 47 | 48.3 |
| 1997 | 49 | 48.3 |
| 1998 | 63 | 48.3 |
| 2000 | 48 | 62.9 |
| 2001 | 53 | 62.9 |
| 2002 | 73 | 62.9 |
| 2003 | 57 | 62.9 |
| 2004 | 52 | 62.9 |
| 2005 | 85 | 62.9 |
| 2006 | 55 | 62.9 |
| 2007 | 80 | 62.9 |
| Year | First date | Last date |
|---|---|---|
| 1963 | 1963-05-08 | 1963-10-15 |
| 1964 | 1964-05-17 | 1964-09-20 |
| 1965 | 1965-05-07 | 1965-09-19 |
| 1966 | 1966-05-05 | 1966-09-03 |
| 1967 | 1967-05-25 | 1967-10-04 |
| 1968 | 1968-05-02 | 1968-10-16 |
| 1969 | 1969-05-02 | 1969-10-04 |
| 1970 | 1970-04-28 | 1970-09-21 |
| 1971 | 1971-04-12 | 1971-10-02 |
| 1972 | 1972-05-18 | 1972-09-20 |
| 1973 | 1973-06-08 | 1973-09-24 |
| 1974 | 1974-05-21 | 1974-09-11 |
| 1975 | 1975-05-18 | 1975-10-14 |
| 1976 | 1976-04-18 | 1976-10-04 |
| 1977 | 1977-04-17 | 1977-09-05 |
| 1978 | 1978-05-26 | 1978-09-21 |
| 1979 | 1979-05-09 | 1979-10-22 |
| 1980 | 1980-04-23 | 1980-09-21 |
| 1981 | 1981-05-30 | 1981-10-01 |
| 1982 | 1982-05-06 | 1982-10-07 |
| 1983 | 1983-06-10 | 1983-10-06 |
| 1985 | 1985-04-20 | 1985-09-20 |
| 1986 | 1986-03-30 | 1986-09-29 |
| 1987 | 1987-04-21 | 1987-09-28 |
| 1988 | 1988-05-15 | 1988-09-23 |
| 1989 | 1989-04-26 | 1989-08-28 |
| 1990 | 1990-04-25 | 1990-10-06 |
| 1991 | 1991-05-12 | 1991-09-16 |
| 1992 | 1992-05-02 | 1992-09-17 |
| 1993 | 1993-05-09 | 1993-08-31 |
| 1994 | 1994-04-26 | 1994-09-16 |
| 1995 | 1995-06-06 | 1995-09-14 |
| 1996 | 1996-05-18 | 1996-09-09 |
| 1997 | 1997-05-19 | 1997-10-07 |
| 1998 | 1998-05-15 | 1998-09-27 |
| 2000 | 2000-05-07 | 2000-09-20 |
| 2001 | 2001-04-10 | 2001-09-13 |
| 2002 | 2002-04-16 | 2002-10-01 |
| 2003 | 2003-04-15 | 2003-10-21 |
| 2004 | 2004-04-17 | 2004-09-23 |
| 2005 | 2005-04-11 | 2005-10-06 |
| 2006 | 2006-04-14 | 2006-10-04 |
| 2007 | 2007-04-17 | 2007-10-09 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 43 | 85 | 2005 | 80 |
| 35 C (95 F): Days | 39 | 33 | 1988 | 3 |
| 40 C (104 F): Days | 4 | 2 | 1983 | 1 |
| 90 F (32.2 C): Days | 43 | 60 | 1988 | 37 |
| 100 F (37.8 C): Days | 11 | 16 | 1988 | 2 |
| 0 C (32 F): Ice days (max | 43 | 67 | 1978 | 45 |
| 0 C (32 F): Frost days (min | 44 | 160 | 1976 | 137 |
| -10 C (14 F): Days with min | 44 | 70 | 1985 | 34 |
| -20 C (-4 F): Days with min | 43 | 31 | 1963 | 10 |
| -30 C (-22 F): Days with min | 8 | 3 | 1983 | 1 |
| 20 C (68 F): Tropical nights (min | 44 | 34 | 1995 | 25 |
| 25 C (77 F): Days with min | 9 | 2 | 1989 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 33 | 40 | 1970 | 37 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 33 | 14 | 1970 | 13 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 26 | 5 | 1970 | 2 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 2 | 1 | 1979 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 20 | 4 | 1965 | 1 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 1 | 1 | 2006 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1963.
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).