Rossvatn - Heggmo Threshold Days by Year (NOE00156952)
4 fixed thresholds counted per year at Rossvatn - Heggmo (NOE00156952): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Rossvatn - Heggmo Thresholds
- Rossvatn - Heggmo: days with 10 mm (0.39 in) or more of precipitation in 52 years, most in 1989 with 89.
- Rossvatn - Heggmo: days with 25 mm (0.98 in) or more of precipitation in 52 years, most in 1989 with 24.
- Rossvatn - Heggmo: days with 50 mm (1.97 in) or more of precipitation in 38 years, most in 2002 with 7.
- Rossvatn - Heggmo: days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 1966 with 1.
- 4 fixed thresholds have at least one qualifying day at Rossvatn - Heggmo.
Days with 10 mm (0.39 in) or more of precipitation
52 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1956 | 41 | 46.3 |
| 1957 | 47 | 46.3 |
| 1958 | 50 | 46.3 |
| 1959 | 47 | 46.3 |
| 1960 | 22 | 49.2 |
| 1961 | 64 | 49.2 |
| 1962 | 59 | 49.2 |
| 1963 | 53 | 49.2 |
| 1964 | 70 | 49.2 |
| 1965 | 32 | 49.2 |
| 1966 | 49 | 49.2 |
| 1967 | 46 | 49.2 |
| 1968 | 48 | 49.2 |
| 1969 | 49 | 49.2 |
| 1970 | 45 | 58.5 |
| 1971 | 77 | 58.5 |
| 1972 | 63 | 58.5 |
| 1973 | 74 | 58.5 |
| 1974 | 38 | 58.5 |
| 1975 | 85 | 58.5 |
| 1976 | 48 | 58.5 |
| 1977 | 54 | 58.5 |
| 1978 | 48 | 58.5 |
| 1979 | 53 | 58.5 |
| 1980 | 33 | 50.5 |
| 1981 | 44 | 50.5 |
| 1982 | 61 | 50.5 |
| 1983 | 68 | 50.5 |
| 1984 | 32 | 50.5 |
| 1985 | 49 | 50.5 |
| 1986 | 39 | 50.5 |
| 1987 | 43 | 50.5 |
| 1988 | 47 | 50.5 |
| 1989 | 89 | 50.5 |
| 1990 | 62 | 56.9 |
| 1991 | 61 | 56.9 |
| 1992 | 61 | 56.9 |
| 1993 | 52 | 56.9 |
| 1994 | 47 | 56.9 |
| 1995 | 76 | 56.9 |
| 1996 | 49 | 56.9 |
| 1997 | 61 | 56.9 |
| 1998 | 55 | 56.9 |
| 1999 | 45 | 56.9 |
| 2000 | 59 | 57.8 |
| 2001 | 51 | 57.8 |
| 2002 | 41 | 57.8 |
| 2003 | 61 | 57.8 |
| 2004 | 57 | 57.8 |
| 2005 | 74 | 57.8 |
| 2006 | 60 | 57.8 |
| 2007 | 59 | 57.8 |
| Year | First date | Last date |
|---|---|---|
| 1956 | 1956-01-02 | 1956-12-18 |
| 1957 | 1957-01-07 | 1957-12-23 |
| 1958 | 1958-01-14 | 1958-12-04 |
| 1959 | 1959-01-25 | 1959-12-31 |
| 1960 | 1960-01-09 | 1960-12-24 |
| 1961 | 1961-01-11 | 1961-12-24 |
| 1962 | 1962-01-01 | 1962-12-25 |
| 1963 | 1963-01-03 | 1963-12-29 |
| 1964 | 1964-01-02 | 1964-12-23 |
| 1965 | 1965-01-15 | 1965-12-19 |
| 1966 | 1966-01-04 | 1966-12-19 |
| 1967 | 1967-01-15 | 1967-12-15 |
| 1968 | 1968-01-19 | 1968-12-31 |
| 1969 | 1969-01-03 | 1969-12-31 |
| 1970 | 1970-01-01 | 1970-12-20 |
| 1971 | 1971-01-02 | 1971-12-31 |
| 1972 | 1972-02-15 | 1972-12-31 |
| 1973 | 1973-01-02 | 1973-12-30 |
| 1974 | 1974-01-01 | 1974-12-31 |
| 1975 | 1975-01-01 | 1975-12-31 |
| 1976 | 1976-01-01 | 1976-11-21 |
| 1977 | 1977-01-04 | 1977-12-25 |
| 1978 | 1978-01-05 | 1978-12-19 |
| 1979 | 1979-01-07 | 1979-12-21 |
| 1980 | 1980-01-12 | 1980-12-30 |
| 1981 | 1981-01-01 | 1981-12-02 |
| 1982 | 1982-01-09 | 1982-12-29 |
| 1983 | 1983-01-01 | 1983-12-31 |
| 1984 | 1984-01-01 | 1984-12-10 |
| 1985 | 1985-01-27 | 1985-12-21 |
| 1986 | 1986-02-10 | 1986-11-30 |
| 1987 | 1987-01-20 | 1987-12-24 |
| 1988 | 1988-01-09 | 1988-12-28 |
| 1989 | 1989-01-01 | 1989-12-26 |
| 1990 | 1990-01-07 | 1990-12-22 |
| 1991 | 1991-01-05 | 1991-12-31 |
| 1992 | 1992-01-01 | 1992-12-28 |
| 1993 | 1993-01-01 | 1993-12-19 |
| 1994 | 1994-01-08 | 1994-12-25 |
| 1995 | 1995-01-03 | 1995-12-29 |
| 1996 | 1996-01-01 | 1996-12-26 |
| 1997 | 1997-01-12 | 1997-12-15 |
| 1998 | 1998-01-10 | 1998-12-18 |
| 1999 | 1999-01-30 | 1999-12-23 |
| 2000 | 2000-01-02 | 2000-12-21 |
| 2001 | 2001-01-12 | 2001-12-18 |
| 2002 | 2002-01-02 | 2002-12-19 |
| 2003 | 2003-01-10 | 2003-12-29 |
| 2004 | 2004-01-07 | 2004-12-31 |
| 2005 | 2005-01-04 | 2005-12-12 |
| 2006 | 2006-01-11 | 2006-12-31 |
| 2007 | 2007-01-02 | 2007-12-27 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 10 mm (0.39 in): Days with 10 mm or more rain | 52 | 89 | 1989 | 59 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 52 | 24 | 1989 | 7 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 38 | 7 | 2002 | 2 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 1 | 1 | 1966 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1956.
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).