Keflavik Threshold Days by Year
10 fixed thresholds counted per year at Keflavik (ICW00016201): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Keflavik Thresholds
- Keflavik: days with a maximum temperature at or below Ice days (max at or below 0 C) (32 F) in 45 years, most in 1995 with 64.
- Keflavik: nights with a minimum temperature at or below Frost days (min at or below 0 C) (32 F) in 44 years, most in 1979 with 154.
- Keflavik: days with Days with 10 mm or more rain (0.39 in) or more of precipitation in 43 years, most in 2001 with 74.
- Keflavik: days with Days with 25 mm or more rain (0.98 in) or more of precipitation in 42 years, most in 2002 with 31.
- 10 fixed thresholds have at least one qualifying day at Keflavik.
Nights at or below Frost days (min at or below 0 C) (32 F)
44 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1952 | 123 | 113.5 |
| 1953 | 119 | 113.5 |
| 1954 | 113 | 113.5 |
| 1955 | 117 | 113.5 |
| 1956 | 88 | 113.5 |
| 1957 | 125 | 113.5 |
| 1958 | 113 | 113.5 |
| 1959 | 110 | 113.5 |
| 1960 | 98 | 108.3 |
| 1961 | 114 | 108.3 |
| 1962 | 118 | 108.3 |
| 1963 | 88 | 108.3 |
| 1964 | 61 | 108.3 |
| 1965 | 104 | 108.3 |
| 1966 | 127 | 108.3 |
| 1967 | 131 | 108.3 |
| 1968 | 111 | 108.3 |
| 1969 | 131 | 108.3 |
| 1970 | 135 | 122.6 |
| 1971 | 104 | 122.6 |
| 1972 | 87 | 122.6 |
| 1973 | 133 | 122.6 |
| 1974 | 92 | 122.6 |
| 1975 | 121 | 122.6 |
| 1976 | 143 | 122.6 |
| 1977 | 127 | 122.6 |
| 1978 | 130 | 122.6 |
| 1979 | 154 | 122.6 |
| 1980 | 120 | 128.3 |
| 1981 | 143 | 128.3 |
| 1989 | 122 | 128.3 |
| 1990 | 140 | 127.3 |
| 1991 | 114 | 127.3 |
| 1992 | 136 | 127.3 |
| 1993 | 122 | 127.3 |
| 1994 | 144 | 127.3 |
| 1995 | 135 | 127.3 |
| 1996 | 117 | 127.3 |
| 1997 | 115 | 127.3 |
| 1998 | 123 | 127.3 |
| 2001 | 100 | 94.5 |
| 2002 | 89 | 94.5 |
| 2025 | 82 | 83 |
| 2026 | 84 | 83 |
| Year | First date | Last date |
|---|---|---|
| 1952 | 1952-01-01 | 1952-12-31 |
| 1953 | 1953-01-01 | 1953-12-30 |
| 1954 | 1954-01-02 | 1954-12-31 |
| 1955 | 1955-01-08 | 1955-12-31 |
| 1956 | 1956-01-01 | 1956-12-31 |
| 1957 | 1957-01-01 | 1957-12-31 |
| 1958 | 1958-01-01 | 1958-12-31 |
| 1959 | 1959-01-01 | 1959-12-31 |
| 1960 | 1960-01-01 | 1960-12-31 |
| 1961 | 1961-01-01 | 1961-12-31 |
| 1962 | 1962-01-05 | 1962-12-31 |
| 1963 | 1963-01-01 | 1963-12-30 |
| 1964 | 1964-01-12 | 1964-12-31 |
| 1965 | 1965-01-01 | 1965-12-31 |
| 1966 | 1966-01-01 | 1966-12-31 |
| 1967 | 1967-01-01 | 1967-12-31 |
| 1968 | 1968-01-01 | 1968-12-30 |
| 1969 | 1969-01-02 | 1969-12-31 |
| 1970 | 1970-01-02 | 1970-12-29 |
| 1971 | 1971-01-02 | 1971-12-26 |
| 1972 | 1972-01-17 | 1972-12-31 |
| 1973 | 1973-01-01 | 1973-12-31 |
| 1974 | 1974-01-01 | 1974-12-31 |
| 1975 | 1975-01-01 | 1975-12-31 |
| 1976 | 1976-01-01 | 1976-12-31 |
| 1977 | 1977-01-01 | 1977-12-31 |
| 1978 | 1978-01-01 | 1978-12-31 |
| 1979 | 1979-01-01 | 1979-12-31 |
| 1980 | 1980-01-01 | 1980-12-31 |
| 1981 | 1981-01-01 | 1981-12-31 |
| 1989 | 1989-01-02 | 1989-12-30 |
| 1990 | 1990-01-02 | 1990-12-31 |
| 1991 | 1991-01-01 | 1991-12-31 |
| 1992 | 1992-01-01 | 1992-12-31 |
| 1993 | 1993-01-01 | 1993-12-31 |
| 1994 | 1994-01-01 | 1994-12-31 |
| 1995 | 1995-01-01 | 1995-12-31 |
| 1996 | 1996-01-01 | 1996-12-26 |
| 1997 | 1997-01-04 | 1997-12-31 |
| 1998 | 1998-01-01 | 1998-12-28 |
| 2001 | 2001-01-01 | 2001-12-30 |
| 2002 | 2002-01-10 | 2002-12-28 |
| 2025 | 2025-01-01 | 2025-12-31 |
| 2026 | 2026-01-01 | 2026-05-08 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| Ice days (max at or below 0 C) (32 F): Ice days (max | 45 | 64 | 1995 | 24 |
| Frost days (min at or below 0 C) (32 F): Frost days (min | 44 | 154 | 1979 | 84 |
| -10 C (14 F): Days with min | 37 | 20 | 1969 | 5 |
| -20 C (-4 F): Days with min | 1 | 1 | 1989 | 1 |
| Days with 10 mm or more rain (0.39 in): Days with 10 mm or more rain | 43 | 74 | 2001 | 7 |
| Days with 25 mm or more rain (0.98 in): Days with 25 mm or more rain | 42 | 31 | 2002 | 31 |
| Days with 50 mm or more rain (1.97 in): Days with 50 mm or more rain | 8 | 8 | 2001 | 6 |
| Days with 10 cm or more snowfall (3.9 in): Days with 10 cm or more snowfall | 41 | 15 | 1962 | 1 |
| Days with 25 cm or more snowfall (9.8 in): Days with 25 cm or more snowfall | 9 | 3 | 1959 | 1 |
| Days with 50 cm or more snowfall (19.7 in): Days with 50 cm or more snowfall | 2 | 1 | 1959 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1952.
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 2026-10-12 (12 October 2026). Threshold counts are computed by this site.
Data as of . Last revised (2026-10-13).