Circle Threshold Days by Year (USC00241758)
19 fixed thresholds counted per year at Circle (USC00241758): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Circle Thresholds
- Circle: days with a maximum temperature at or above 30 C (86 F) in 61 years, most in 2021 with 88.
- Circle: days with a maximum temperature at or above 90 F (32.2 C) in 61 years, most in 1988 with 63.
- Circle: days with a maximum temperature at or below 0 C (32 F) in 61 years, most in 1978 with 100.
- Circle: nights with a minimum temperature at or below 0 C (32 F) in 61 years, most in 2002 with 203.
- 19 fixed thresholds have at least one qualifying day at Circle.
Days at or above 30 C (86 F)
61 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1964 | 45 | 43.7 |
| 1965 | 28 | 43.7 |
| 1966 | 59 | 43.7 |
| 1967 | 51 | 43.7 |
| 1968 | 34 | 43.7 |
| 1969 | 45 | 43.7 |
| 1970 | 62 | 42.9 |
| 1971 | 53 | 42.9 |
| 1972 | 35 | 42.9 |
| 1973 | 42 | 42.9 |
| 1974 | 41 | 42.9 |
| 1975 | 31 | 42.9 |
| 1976 | 51 | 42.9 |
| 1977 | 32 | 42.9 |
| 1978 | 35 | 42.9 |
| 1979 | 47 | 42.9 |
| 1980 | 55 | 53.9 |
| 1981 | 54 | 53.9 |
| 1982 | 44 | 53.9 |
| 1983 | 61 | 53.9 |
| 1984 | 60 | 53.9 |
| 1985 | 48 | 53.9 |
| 1987 | 46 | 53.9 |
| 1988 | 73 | 53.9 |
| 1989 | 44 | 53.9 |
| 1990 | 56 | 44.3 |
| 1991 | 50 | 44.3 |
| 1992 | 25 | 44.3 |
| 1993 | 12 | 44.3 |
| 1994 | 44 | 44.3 |
| 1995 | 52 | 44.3 |
| 1996 | 46 | 44.3 |
| 1997 | 58 | 44.3 |
| 1998 | 61 | 44.3 |
| 1999 | 39 | 44.3 |
| 2000 | 51 | 54.6 |
| 2001 | 60 | 54.6 |
| 2002 | 54 | 54.6 |
| 2003 | 68 | 54.6 |
| 2004 | 42 | 54.6 |
| 2005 | 49 | 54.6 |
| 2006 | 70 | 54.6 |
| 2007 | 57 | 54.6 |
| 2008 | 50 | 54.6 |
| 2009 | 45 | 54.6 |
| 2010 | 38 | 51.3 |
| 2011 | 52 | 51.3 |
| 2012 | 66 | 51.3 |
| 2013 | 44 | 51.3 |
| 2014 | 35 | 51.3 |
| 2015 | 64 | 51.3 |
| 2016 | 52 | 51.3 |
| 2017 | 72 | 51.3 |
| 2018 | 50 | 51.3 |
| 2019 | 40 | 51.3 |
| 2021 | 88 | 67.2 |
| 2022 | 61 | 67.2 |
| 2023 | 54 | 67.2 |
| 2024 | 68 | 67.2 |
| 2025 | 63 | 67.2 |
| 2026 | 69 | 67.2 |
| Year | First date | Last date |
|---|---|---|
| 1964 | 1964-05-16 | 1964-09-17 |
| 1965 | 1965-06-24 | 1965-08-23 |
| 1966 | 1966-05-06 | 1966-09-23 |
| 1967 | 1967-06-27 | 1967-09-29 |
| 1968 | 1968-05-01 | 1968-09-15 |
| 1969 | 1969-05-14 | 1969-09-19 |
| 1970 | 1970-05-18 | 1970-09-19 |
| 1971 | 1971-05-14 | 1971-09-12 |
| 1972 | 1972-05-17 | 1972-09-10 |
| 1973 | 1973-06-01 | 1973-08-31 |
| 1974 | 1974-04-26 | 1974-08-20 |
| 1975 | 1975-05-16 | 1975-09-17 |
| 1976 | 1976-06-01 | 1976-09-18 |
| 1977 | 1977-05-09 | 1977-09-05 |
| 1978 | 1978-05-16 | 1978-09-11 |
| 1979 | 1979-05-17 | 1979-09-29 |
| 1980 | 1980-04-20 | 1980-10-09 |
| 1981 | 1981-05-02 | 1981-09-20 |
| 1982 | 1982-05-04 | 1982-09-10 |
| 1983 | 1983-05-26 | 1983-09-27 |
| 1984 | 1984-05-16 | 1984-09-19 |
| 1985 | 1985-05-03 | 1985-09-15 |
| 1987 | 1987-04-28 | 1987-10-03 |
| 1988 | 1988-05-06 | 1988-09-07 |
| 1989 | 1989-06-19 | 1989-08-24 |
| 1990 | 1990-06-10 | 1990-09-25 |
| 1991 | 1991-06-10 | 1991-09-08 |
| 1992 | 1992-05-05 | 1992-10-01 |
| 1993 | 1993-05-13 | 1993-09-12 |
| 1994 | 1994-06-23 | 1994-09-10 |
| 1995 | 1995-05-31 | 1995-10-11 |
| 1996 | 1996-06-08 | 1996-09-05 |
| 1997 | 1997-05-31 | 1997-10-03 |
| 1998 | 1998-05-26 | 1998-09-18 |
| 1999 | 1999-06-20 | 1999-09-23 |
| 2000 | 2000-05-02 | 2000-09-18 |
| 2001 | 2001-04-27 | 2001-09-28 |
| 2002 | 2002-06-16 | 2002-09-16 |
| 2003 | 2003-05-29 | 2003-10-19 |
| 2004 | 2004-06-03 | 2004-10-09 |
| 2005 | 2005-06-17 | 2005-10-01 |
| 2006 | 2006-05-18 | 2006-09-13 |
| 2007 | 2007-06-20 | 2007-09-17 |
| 2008 | 2008-05-18 | 2008-09-19 |
| 2009 | 2009-05-30 | 2009-09-19 |
| 2010 | 2010-06-24 | 2010-09-28 |
| 2011 | 2011-06-29 | 2011-10-05 |
| 2012 | 2012-04-23 | 2012-09-15 |
| 2013 | 2013-05-13 | 2013-09-13 |
| 2014 | 2014-05-23 | 2014-09-26 |
| 2015 | 2015-06-01 | 2015-10-11 |
| 2016 | 2016-05-05 | 2016-09-02 |
| 2017 | 2017-05-06 | 2017-09-14 |
| 2018 | 2018-05-26 | 2018-09-11 |
| 2019 | 2019-06-03 | 2019-09-16 |
| 2021 | 2021-05-18 | 2021-10-06 |
| 2022 | 2022-06-17 | 2022-09-29 |
| 2023 | 2023-04-11 | 2023-09-18 |
| 2024 | 2024-06-14 | 2024-09-30 |
| 2025 | 2025-05-04 | 2025-10-01 |
| 2026 | 2026-04-22 | 2026-09-11 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 61 | 88 | 2021 | 69 |
| 35 C (95 F): Days | 60 | 37 | 1988 | 23 |
| 40 C (104 F): Days | 20 | 6 | 1983 | 6 |
| 90 F (32.2 C): Days | 61 | 63 | 1988 | 46 |
| 100 F (37.8 C): Days | 45 | 17 | 1988 | 9 |
| 110 F (43.3 C): Days | 1 | 0 | n/a | 2 |
| 0 C (32 F): Ice days (max | 61 | 100 | 1978 | 24 |
| 0 C (32 F): Frost days (min | 61 | 203 | 2002 | 106 |
| -10 C (14 F): Days with min | 61 | 107 | 1978 | 26 |
| -20 C (-4 F): Days with min | 61 | 51 | 1978 | 7 |
| -30 C (-22 F): Days with min | 57 | 17 | 1982 | 2 |
| -40 C (-40 F): Days with min | 6 | 2 | 1989 | 1 |
| 20 C (68 F): Tropical nights (min | 54 | 10 | 2003 | 7 |
| 25 C (77 F): Days with min | 4 | 1 | 1995 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 61 | 20 | 2010 | 8 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 54 | 6 | 2014 | 1 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 7 | 2 | 1964 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 31 | 4 | 1967 | 1 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 1 | 1 | 1970 | 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 (2026-10-17).