Ellsworth 15 NNE Threshold Days by Year (USC00252647)
18 fixed thresholds counted per year at Ellsworth 15 NNE (USC00252647): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Ellsworth 15 NNE Thresholds
- Ellsworth 15 NNE: days with 10 mm (0.39 in) or more of precipitation in 43 years, most in 1977 with 21.
- Ellsworth 15 NNE: nights with a minimum temperature at or below 0 C (32 F) in 41 years, most in 1970 with 196.
- Ellsworth 15 NNE: nights with a minimum temperature at or below -10 C (14 F) in 41 years, most in 1978 with 94.
- Ellsworth 15 NNE: nights with a minimum temperature at or below -20 C (-4 F) in 41 years, most in 1979 with 34.
- 18 fixed thresholds have at least one qualifying day at Ellsworth 15 NNE.
Days at or above 30 C (86 F)
39 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1964 | 56 | 46.5 |
| 1965 | 29 | 46.5 |
| 1966 | 55 | 46.5 |
| 1967 | 44 | 46.5 |
| 1968 | 38 | 46.5 |
| 1969 | 57 | 46.5 |
| 1970 | 73 | 52 |
| 1971 | 49 | 52 |
| 1972 | 44 | 52 |
| 1973 | 54 | 52 |
| 1974 | 52 | 52 |
| 1975 | 58 | 52 |
| 1976 | 63 | 52 |
| 1977 | 36 | 52 |
| 1978 | 53 | 52 |
| 1979 | 38 | 52 |
| 1981 | 39 | 49.2 |
| 1983 | 56 | 49.2 |
| 1984 | 62 | 49.2 |
| 1985 | 50 | 49.2 |
| 1986 | 40 | 49.2 |
| 1989 | 48 | 49.2 |
| 1991 | 32 | 33.6 |
| 1992 | 15 | 33.6 |
| 1993 | 12 | 33.6 |
| 1994 | 40 | 33.6 |
| 1995 | 46 | 33.6 |
| 1996 | 23 | 33.6 |
| 1997 | 52 | 33.6 |
| 1998 | 43 | 33.6 |
| 1999 | 39 | 33.6 |
| 2000 | 63 | 54.5 |
| 2001 | 58 | 54.5 |
| 2002 | 65 | 54.5 |
| 2003 | 46 | 54.5 |
| 2004 | 32 | 54.5 |
| 2005 | 54 | 54.5 |
| 2006 | 53 | 54.5 |
| 2007 | 65 | 54.5 |
| Year | First date | Last date |
|---|---|---|
| 1964 | 1964-05-18 | 1964-10-01 |
| 1965 | 1965-05-01 | 1965-10-09 |
| 1966 | 1966-05-04 | 1966-09-24 |
| 1967 | 1967-05-22 | 1967-10-03 |
| 1968 | 1968-06-03 | 1968-10-14 |
| 1969 | 1969-05-25 | 1969-09-28 |
| 1970 | 1970-05-17 | 1970-10-05 |
| 1971 | 1971-06-16 | 1971-09-14 |
| 1972 | 1972-05-16 | 1972-09-19 |
| 1973 | 1973-06-07 | 1973-09-01 |
| 1974 | 1974-05-19 | 1974-09-26 |
| 1975 | 1975-06-20 | 1975-10-07 |
| 1976 | 1976-06-02 | 1976-10-01 |
| 1977 | 1977-06-03 | 1977-09-24 |
| 1978 | 1978-05-14 | 1978-09-29 |
| 1979 | 1979-05-29 | 1979-10-01 |
| 1981 | 1981-04-27 | 1981-09-29 |
| 1983 | 1983-05-27 | 1983-09-27 |
| 1984 | 1984-05-16 | 1984-09-21 |
| 1985 | 1985-05-09 | 1985-09-19 |
| 1986 | 1986-05-04 | 1986-09-01 |
| 1989 | 1989-04-22 | 1989-10-01 |
| 1991 | 1991-06-26 | 1991-10-17 |
| 1992 | 1992-05-01 | 1992-09-24 |
| 1993 | 1993-05-27 | 1993-10-07 |
| 1994 | 1994-05-17 | 1994-09-29 |
| 1995 | 1995-06-15 | 1995-09-16 |
| 1996 | 1996-06-15 | 1996-09-06 |
| 1997 | 1997-06-19 | 1997-10-03 |
| 1998 | 1998-05-31 | 1998-09-19 |
| 1999 | 1999-06-09 | 1999-09-07 |
| 2000 | 2000-05-05 | 2000-09-19 |
| 2001 | 2001-05-14 | 2001-09-12 |
| 2002 | 2002-05-31 | 2002-09-09 |
| 2003 | 2003-05-30 | 2003-10-20 |
| 2004 | 2004-05-06 | 2004-09-18 |
| 2005 | 2005-05-20 | 2005-10-04 |
| 2006 | 2006-05-20 | 2006-10-03 |
| 2007 | 2007-05-13 | 2007-10-07 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 39 | 73 | 1970 | 65 |
| 35 C (95 F): Days | 36 | 19 | 1964 | 14 |
| 40 C (104 F): Days | 5 | 2 | 1964 | 1 |
| 90 F (32.2 C): Days | 39 | 50 | 2007 | 50 |
| 100 F (37.8 C): Days | 25 | 7 | 1964 | 2 |
| 0 C (32 F): Ice days (max | 39 | 73 | 1978 | 46 |
| 0 C (32 F): Frost days (min | 41 | 196 | 1970 | 149 |
| -10 C (14 F): Days with min | 41 | 94 | 1978 | 68 |
| -20 C (-4 F): Days with min | 41 | 34 | 1979 | 13 |
| -30 C (-22 F): Days with min | 29 | 9 | 1989 | 1 |
| -40 C (-40 F): Days with min | 1 | 2 | 1989 | 2 |
| 20 C (68 F): Tropical nights (min | 16 | 3 | 1966 | 2 |
| 25 C (77 F): Days with min | 1 | 1 | 1966 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 43 | 21 | 1977 | 12 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 40 | 6 | 1966 | 2 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 15 | 2 | 1966 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 38 | 7 | 1970 | 1 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 7 | 2 | 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 1964.
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).