Marietta Wwtp Threshold Days by Year (USC00334927)
17 fixed thresholds counted per year at Marietta Wwtp (USC00334927): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Marietta Wwtp Thresholds
- Marietta Wwtp: days with 10 mm (0.39 in) or more of precipitation in 62 years, most in 2011 with 56.
- Marietta Wwtp: days with 25 mm (0.98 in) or more of precipitation in 62 years, most in 2003 with 17.
- Marietta Wwtp: days with a maximum temperature at or above 30 C (86 F) in 61 years, most in 2002 with 83.
- Marietta Wwtp: days with a maximum temperature at or above 90 F (32.2 C) in 61 years, most in 1987 with 48.
- 17 fixed thresholds have at least one qualifying day at Marietta Wwtp.
Days at or above 30 C (86 F)
61 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1964 | 76 | 66.3 |
| 1965 | 67 | 66.3 |
| 1966 | 72 | 66.3 |
| 1967 | 53 | 66.3 |
| 1968 | 65 | 66.3 |
| 1969 | 65 | 66.3 |
| 1970 | 71 | 47 |
| 1971 | 53 | 47 |
| 1972 | 32 | 47 |
| 1973 | 43 | 47 |
| 1974 | 44 | 47 |
| 1975 | 64 | 47 |
| 1976 | 31 | 47 |
| 1977 | 51 | 47 |
| 1978 | 49 | 47 |
| 1979 | 32 | 47 |
| 1980 | 49 | 52 |
| 1981 | 40 | 52 |
| 1982 | 41 | 52 |
| 1983 | 71 | 52 |
| 1984 | 46 | 52 |
| 1985 | 48 | 52 |
| 1986 | 55 | 52 |
| 1987 | 77 | 52 |
| 1988 | 60 | 52 |
| 1989 | 33 | 52 |
| 1990 | 42 | 47.6 |
| 1991 | 76 | 47.6 |
| 1992 | 29 | 47.6 |
| 1993 | 57 | 47.6 |
| 1994 | 37 | 47.6 |
| 1995 | 55 | 47.6 |
| 1996 | 34 | 47.6 |
| 1997 | 29 | 47.6 |
| 1998 | 55 | 47.6 |
| 1999 | 62 | 47.6 |
| 2000 | 26 | 44.7 |
| 2001 | 38 | 44.7 |
| 2002 | 83 | 44.7 |
| 2003 | 27 | 44.7 |
| 2004 | 28 | 44.7 |
| 2005 | 61 | 44.7 |
| 2006 | 40 | 44.7 |
| 2007 | 79 | 44.7 |
| 2008 | 41 | 44.7 |
| 2009 | 24 | 44.7 |
| 2010 | 73 | 57.8 |
| 2011 | 49 | 57.8 |
| 2012 | 68 | 57.8 |
| 2013 | 35 | 57.8 |
| 2014 | 37 | 57.8 |
| 2016 | 77 | 57.8 |
| 2017 | 48 | 57.8 |
| 2019 | 75 | 57.8 |
| 2020 | 62 | 56.9 |
| 2021 | 61 | 56.9 |
| 2022 | 46 | 56.9 |
| 2023 | 36 | 56.9 |
| 2024 | 74 | 56.9 |
| 2025 | 63 | 56.9 |
| 2026 | 56 | 56.9 |
| Year | First date | Last date |
|---|---|---|
| 1964 | 1964-05-05 | 1964-09-22 |
| 1965 | 1965-05-06 | 1965-09-21 |
| 1966 | 1966-05-23 | 1966-09-04 |
| 1967 | 1967-05-27 | 1967-10-03 |
| 1968 | 1968-06-05 | 1968-09-24 |
| 1969 | 1969-05-03 | 1969-10-13 |
| 1970 | 1970-04-30 | 1970-09-26 |
| 1971 | 1971-05-18 | 1971-09-29 |
| 1972 | 1972-05-24 | 1972-09-17 |
| 1973 | 1973-07-02 | 1973-09-28 |
| 1974 | 1974-05-14 | 1974-08-28 |
| 1975 | 1975-05-21 | 1975-09-07 |
| 1976 | 1976-04-17 | 1976-09-13 |
| 1977 | 1977-05-16 | 1977-09-05 |
| 1978 | 1978-05-26 | 1978-09-21 |
| 1979 | 1979-05-08 | 1979-09-12 |
| 1980 | 1980-05-29 | 1980-09-14 |
| 1981 | 1981-06-05 | 1981-09-14 |
| 1982 | 1982-05-06 | 1982-09-15 |
| 1983 | 1983-05-13 | 1983-09-19 |
| 1984 | 1984-04-26 | 1984-09-22 |
| 1985 | 1985-04-20 | 1985-09-23 |
| 1986 | 1986-04-26 | 1986-09-30 |
| 1987 | 1987-04-21 | 1987-09-10 |
| 1988 | 1988-05-15 | 1988-08-28 |
| 1989 | 1989-05-25 | 1989-09-21 |
| 1990 | 1990-04-25 | 1990-09-06 |
| 1991 | 1991-04-29 | 1991-09-18 |
| 1992 | 1992-05-17 | 1992-09-15 |
| 1993 | 1993-05-09 | 1993-09-14 |
| 1994 | 1994-05-23 | 1994-09-15 |
| 1995 | 1995-05-24 | 1995-09-06 |
| 1996 | 1996-05-19 | 1996-09-06 |
| 1997 | 1997-05-20 | 1997-09-03 |
| 1998 | 1998-05-15 | 1998-10-18 |
| 1999 | 1999-05-12 | 1999-09-29 |
| 2000 | 2000-05-07 | 2000-09-11 |
| 2001 | 2001-05-04 | 2001-09-10 |
| 2002 | 2002-04-17 | 2002-10-05 |
| 2003 | 2003-06-24 | 2003-08-30 |
| 2004 | 2004-05-10 | 2004-09-07 |
| 2005 | 2005-06-06 | 2005-09-23 |
| 2006 | 2006-05-29 | 2006-08-28 |
| 2007 | 2007-05-02 | 2007-10-09 |
| 2008 | 2008-06-06 | 2008-09-15 |
| 2009 | 2009-04-26 | 2009-08-28 |
| 2010 | 2010-04-03 | 2010-09-25 |
| 2011 | 2011-05-23 | 2011-09-04 |
| 2012 | 2012-03-22 | 2012-09-08 |
| 2013 | 2013-04-11 | 2013-09-12 |
| 2014 | 2014-05-09 | 2014-09-07 |
| 2016 | 2016-05-28 | 2016-09-26 |
| 2017 | 2017-05-01 | 2017-10-08 |
| 2019 | 2019-05-02 | 2019-10-03 |
| 2020 | 2020-05-24 | 2020-09-10 |
| 2021 | 2021-05-19 | 2021-09-19 |
| 2022 | 2022-04-23 | 2022-09-21 |
| 2023 | 2023-06-02 | 2023-09-06 |
| 2024 | 2024-04-16 | 2024-09-22 |
| 2025 | 2025-04-18 | 2025-09-28 |
| 2026 | 2026-03-22 | 2026-09-17 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 61 | 83 | 2002 | 56 |
| 35 C (95 F): Days | 37 | 19 | 1988 | 3 |
| 90 F (32.2 C): Days | 61 | 48 | 1987 | 22 |
| 100 F (37.8 C): Days | 3 | 5 | 1988 | 2 |
| 0 C (32 F): Ice days (max | 61 | 46 | 2010 | 20 |
| 0 C (32 F): Frost days (min | 61 | 136 | 1976 | 62 |
| -10 C (14 F): Days with min | 61 | 41 | 1977 | 18 |
| -20 C (-4 F): Days with min | 20 | 10 | 1977 | 1 |
| -30 C (-22 F): Days with min | 1 | 1 | 1994 | 1 |
| 20 C (68 F): Tropical nights (min | 61 | 44 | 2021 | 53 |
| 25 C (77 F): Days with min | 4 | 1 | 1973 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 62 | 56 | 2011 | 45 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 62 | 17 | 2003 | 13 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 37 | 3 | 2003 | 1 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 4 | 1 | 1989 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 28 | 3 | 1985 | 1 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 6 | 2 | 1994 | 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).