Lannas Threshold Days by Year (SWE00139974)
10 fixed thresholds counted per year at Lannas (SWE00139974): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Lannas Thresholds
- Lannas: days with 10 mm (0.39 in) or more of precipitation in 85 years, most in 2000 with 26.
- Lannas: nights with a minimum temperature at or below 0 C (32 F) in 71 years, most in 1955 with 219.
- Lannas: nights with a minimum temperature at or below -10 C (14 F) in 71 years, most in 1980 with 116.
- Lannas: nights with a minimum temperature at or below -20 C (-4 F) in 71 years, most in 1985 with 57.
- 10 fixed thresholds have at least one qualifying day at Lannas.
Days at or above 30 C (86 F)
25 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1945 | 13 | 10 |
| 1946 | 9 | 10 |
| 1947 | 8 | 10 |
| 1953 | 1 | 1.3 |
| 1955 | 2 | 1.3 |
| 1958 | 1 | 1.3 |
| 1966 | 1 | 1.7 |
| 1968 | 2 | 1.7 |
| 1969 | 2 | 1.7 |
| 1972 | 3 | 2 |
| 1973 | 2 | 2 |
| 1975 | 1 | 2 |
| 1986 | 3 | 3 |
| 1988 | 3 | 3 |
| 1991 | 1 | 2.5 |
| 1994 | 4 | 2.5 |
| 2003 | 3 | 1.7 |
| 2004 | 1 | 1.7 |
| 2006 | 2 | 1.7 |
| 2007 | 1 | 1.7 |
| 2008 | 2 | 1.7 |
| 2009 | 1 | 1.7 |
| 2011 | 1 | 3 |
| 2014 | 7 | 3 |
| 2015 | 1 | 3 |
| Year | First date | Last date |
|---|---|---|
| 1945 | 1945-07-12 | 1945-08-12 |
| 1946 | 1946-06-24 | 1946-07-22 |
| 1947 | 1947-06-25 | 1947-07-24 |
| 1953 | 1953-06-29 | 1953-06-29 |
| 1955 | 1955-07-10 | 1955-08-26 |
| 1958 | 1958-07-03 | 1958-07-03 |
| 1966 | 1966-06-18 | 1966-06-18 |
| 1968 | 1968-07-03 | 1968-07-04 |
| 1969 | 1969-06-28 | 1969-07-30 |
| 1972 | 1972-06-29 | 1972-07-06 |
| 1973 | 1973-06-22 | 1973-07-03 |
| 1975 | 1975-08-08 | 1975-08-08 |
| 1986 | 1986-06-17 | 1986-06-26 |
| 1988 | 1988-06-26 | 1988-07-19 |
| 1991 | 1991-07-09 | 1991-07-09 |
| 1994 | 1994-07-13 | 1994-08-05 |
| 2003 | 2003-07-16 | 2003-07-18 |
| 2004 | 2004-08-07 | 2004-08-07 |
| 2006 | 2006-06-13 | 2006-08-05 |
| 2007 | 2007-06-07 | 2007-06-07 |
| 2008 | 2008-06-05 | 2008-07-26 |
| 2009 | 2009-06-27 | 2009-06-27 |
| 2011 | 2011-06-11 | 2011-06-11 |
| 2014 | 2014-07-09 | 2014-07-27 |
| 2015 | 2015-07-03 | 2015-07-03 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 25 | 13 | 1945 | 1 |
| 90 F (32.2 C): Days | 5 | 3 | 1946 | 1 |
| 0 C (32 F): Ice days (max | 70 | 128 | 1980 | 75 |
| 0 C (32 F): Frost days (min | 71 | 219 | 1955 | 186 |
| -10 C (14 F): Days with min | 71 | 116 | 1980 | 56 |
| -20 C (-4 F): Days with min | 71 | 57 | 1985 | 9 |
| -30 C (-22 F): Days with min | 37 | 14 | 1966 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 85 | 26 | 2000 | 10 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 60 | 6 | 2005 | 1 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 6 | 1 | 1934 | 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 (2025-12-31).