Hillsborough Rvr Sp Threshold Days by Year (USC00083986)
13 fixed thresholds counted per year at Hillsborough Rvr Sp (USC00083986): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Hillsborough Rvr Sp Thresholds
- Hillsborough Rvr Sp: days with 10 mm (0.39 in) or more of precipitation in 62 years, most in 1959 with 61.
- Hillsborough Rvr Sp: days with 25 mm (0.98 in) or more of precipitation in 62 years, most in 1968 with 27.
- Hillsborough Rvr Sp: days with 50 mm (1.97 in) or more of precipitation in 61 years, most in 1964 with 12.
- Hillsborough Rvr Sp: days with 100 mm (3.94 in) or more of precipitation in 24 years, most in 2004 with 3.
- 13 fixed thresholds have at least one qualifying day at Hillsborough Rvr Sp.
Days with 10 mm (0.39 in) or more of precipitation
62 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1944 | 41 | 40.3 |
| 1945 | 54 | 40.3 |
| 1948 | 30 | 40.3 |
| 1949 | 36 | 40.3 |
| 1950 | 30 | 39.8 |
| 1951 | 30 | 39.8 |
| 1952 | 37 | 39.8 |
| 1953 | 39 | 39.8 |
| 1955 | 43 | 39.8 |
| 1956 | 30 | 39.8 |
| 1957 | 43 | 39.8 |
| 1958 | 45 | 39.8 |
| 1959 | 61 | 39.8 |
| 1960 | 39 | 40.5 |
| 1961 | 27 | 40.5 |
| 1963 | 34 | 40.5 |
| 1964 | 47 | 40.5 |
| 1966 | 44 | 40.5 |
| 1968 | 52 | 40.5 |
| 1970 | 31 | 32.7 |
| 1974 | 27 | 32.7 |
| 1976 | 40 | 32.7 |
| 1980 | 41 | 42.9 |
| 1982 | 38 | 42.9 |
| 1983 | 40 | 42.9 |
| 1986 | 56 | 42.9 |
| 1987 | 49 | 42.9 |
| 1988 | 38 | 42.9 |
| 1989 | 38 | 42.9 |
| 1990 | 40 | 42 |
| 1991 | 39 | 42 |
| 1992 | 48 | 42 |
| 1993 | 35 | 42 |
| 1994 | 43 | 42 |
| 1995 | 44 | 42 |
| 1996 | 47 | 42 |
| 1997 | 45 | 42 |
| 1998 | 39 | 42 |
| 1999 | 40 | 42 |
| 2000 | 28 | 38.7 |
| 2001 | 36 | 38.7 |
| 2002 | 51 | 38.7 |
| 2003 | 39 | 38.7 |
| 2004 | 43 | 38.7 |
| 2005 | 42 | 38.7 |
| 2006 | 27 | 38.7 |
| 2008 | 28 | 38.7 |
| 2009 | 54 | 38.7 |
| 2010 | 38 | 41 |
| 2011 | 38 | 41 |
| 2012 | 50 | 41 |
| 2013 | 45 | 41 |
| 2014 | 29 | 41 |
| 2015 | 40 | 41 |
| 2019 | 47 | 41 |
| 2020 | 40 | 38.4 |
| 2021 | 42 | 38.4 |
| 2022 | 47 | 38.4 |
| 2023 | 40 | 38.4 |
| 2024 | 35 | 38.4 |
| 2025 | 39 | 38.4 |
| 2026 | 26 | 38.4 |
| Year | First date | Last date |
|---|---|---|
| 1944 | 1944-01-09 | 1944-12-07 |
| 1945 | 1945-01-07 | 1945-12-31 |
| 1948 | 1948-01-13 | 1948-12-29 |
| 1949 | 1949-04-05 | 1949-12-25 |
| 1950 | 1950-03-07 | 1950-12-31 |
| 1951 | 1951-01-25 | 1951-12-23 |
| 1952 | 1952-02-05 | 1952-11-19 |
| 1953 | 1953-01-09 | 1953-12-23 |
| 1955 | 1955-01-23 | 1955-11-09 |
| 1956 | 1956-01-24 | 1956-10-20 |
| 1957 | 1957-01-22 | 1957-12-26 |
| 1958 | 1958-01-07 | 1958-12-11 |
| 1959 | 1959-01-01 | 1959-12-23 |
| 1960 | 1960-01-29 | 1960-12-22 |
| 1961 | 1961-01-13 | 1961-12-31 |
| 1963 | 1963-01-21 | 1963-12-24 |
| 1964 | 1964-01-06 | 1964-12-27 |
| 1966 | 1966-01-22 | 1966-09-30 |
| 1968 | 1968-01-24 | 1968-11-19 |
| 1970 | 1970-01-03 | 1970-10-11 |
| 1974 | 1974-01-04 | 1974-12-17 |
| 1976 | 1976-01-01 | 1976-12-21 |
| 1980 | 1980-01-27 | 1980-11-28 |
| 1982 | 1982-01-14 | 1982-12-17 |
| 1983 | 1983-01-21 | 1983-12-30 |
| 1986 | 1986-01-01 | 1986-12-26 |
| 1987 | 1987-01-01 | 1987-11-30 |
| 1988 | 1988-01-10 | 1988-12-12 |
| 1989 | 1989-01-21 | 1989-12-22 |
| 1990 | 1990-01-04 | 1990-10-11 |
| 1991 | 1991-01-11 | 1991-12-02 |
| 1992 | 1992-01-13 | 1992-12-10 |
| 1993 | 1993-01-09 | 1993-12-24 |
| 1994 | 1994-01-01 | 1994-12-22 |
| 1995 | 1995-01-13 | 1995-12-31 |
| 1996 | 1996-01-01 | 1996-12-07 |
| 1997 | 1997-01-09 | 1997-12-26 |
| 1998 | 1998-01-07 | 1998-11-04 |
| 1999 | 1999-01-03 | 1999-12-17 |
| 2000 | 2000-01-06 | 2000-12-19 |
| 2001 | 2001-01-08 | 2001-10-21 |
| 2002 | 2002-01-02 | 2002-12-31 |
| 2003 | 2003-02-10 | 2003-12-15 |
| 2004 | 2004-01-09 | 2004-12-25 |
| 2005 | 2005-01-13 | 2005-12-07 |
| 2006 | 2006-01-05 | 2006-12-25 |
| 2008 | 2008-02-19 | 2008-12-11 |
| 2009 | 2009-01-29 | 2009-12-08 |
| 2010 | 2010-01-01 | 2010-12-19 |
| 2011 | 2011-01-06 | 2011-12-08 |
| 2012 | 2012-01-19 | 2012-12-29 |
| 2013 | 2013-02-12 | 2013-11-16 |
| 2014 | 2014-01-31 | 2014-12-24 |
| 2015 | 2015-01-12 | 2015-09-28 |
| 2019 | 2019-01-05 | 2019-12-23 |
| 2020 | 2020-01-05 | 2020-12-25 |
| 2021 | 2021-02-01 | 2021-12-22 |
| 2022 | 2022-01-16 | 2022-12-21 |
| 2023 | 2023-01-06 | 2023-12-28 |
| 2024 | 2024-01-07 | 2024-12-30 |
| 2025 | 2025-01-20 | 2025-12-08 |
| 2026 | 2026-01-04 | 2026-08-27 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 1 | 212 | 1945 | 212 |
| 35 C (95 F): Days | 1 | 43 | 1945 | 43 |
| 40 C (104 F): Days | 1 | 2 | 1945 | 2 |
| 90 F (32.2 C): Days | 1 | 136 | 1945 | 136 |
| 100 F (37.8 C): Days | 1 | 7 | 1945 | 7 |
| 0 C (32 F): Frost days (min | 2 | 10 | 1945 | 10 |
| 20 C (68 F): Tropical nights (min | 2 | 104 | 1945 | 104 |
| 25 C (77 F): Days with min | 2 | 2 | 1945 | 2 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 62 | 61 | 1959 | 26 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 62 | 27 | 1968 | 9 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 61 | 12 | 1964 | 2 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 24 | 3 | 2004 | 2 |
| 200 mm (7.87 in): Days with 200 mm or more rain | 2 | 1 | 1945 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1945.
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).