Lannas Weather Records (SWE00139974)

Record envelope, standing records and threshold days for Lannas (SWE00139974), Sweden, with 87 years of record.

Key Facts for Lannas

Lannas (SWE00139974) is a weather station in Sweden at 63.17 latitude and 17.66 longitude, 30 m (98 ft) above sea level.
The station reports from 1931 to 2017, 87 years of record.
1,464 records set at Lannas still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Lannas set a daily record precipitation of 6.3 mm (0.25 in) on 22 February 2017.

About the Station

Location: Sweden, 63.17 latitude, 17.66 longitude.
Elevation: 30 m (98 ft).
Period of record: 1931 to 2017, 87 years.
Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Lannas. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Lannas, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	9.8 C (49.6 F)	-38.4 C (-37.1 F)	n/a	n/a
Feb	11.0 C (51.8 F)	-37.7 C (-35.9 F)	n/a	n/a
Mar	17.5 C (63.5 F)	-33.0 C (-27.4 F)	n/a	n/a
Apr	22.4 C (72.3 F)	-20.3 C (-4.5 F)	n/a	n/a
May	29.3 C (84.7 F)	-8.2 C (17.2 F)	n/a	n/a
Jun	31.8 C (89.2 F)	-2.6 C (27.3 F)	n/a	n/a
Jul	33.2 C (91.8 F)	0.5 C (32.9 F)	n/a	n/a
Aug	31.5 C (88.7 F)	-1.9 C (28.6 F)	n/a	n/a
Sep	27.1 C (80.8 F)	-9.2 C (15.4 F)	n/a	n/a
Oct	18.4 C (65.1 F)	-19.2 C (-2.6 F)	n/a	n/a
Nov	13.9 C (57.0 F)	-27.9 C (-18.2 F)	n/a	n/a
Dec	9.1 C (48.4 F)	-37.7 C (-35.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Lannas still stand. 1966 holds the most, with 45.

Standing records at Lannas by the year they were set
Year set	Standing records
1945	26
1946	26
1947	30
1948	25
1949	18
1950	10
1951	15
1952	21
1953	18
1954	15
1955	31
1956	12
1957	31
1958	19
1959	34
1960	10
1961	22
1962	16
1963	14
1964	14
1965	24
1966	45
1967	20
1968	39
1969	23
1970	12
1971	23
1972	16
1973	29
1974	15
1975	17
1976	23
1977	19
1978	25
1979	13
1980	31
1981	25
1982	7
1983	9
1984	17
1985	20
1986	17
1987	35
1988	19
1989	13
1990	22
1991	20
1992	34
1993	12
1994	12
1995	19
1996	14
1997	16
1998	9
1999	23
2000	28
2001	10
2002	23
2003	17
2004	14
2005	11
2006	32
2007	19
2008	14
2009	18
2010	29
2011	26
2012	12
2013	22
2014	32
2015	17
2016	13
2017	3

All-Time Record Progression

6 new records

6 all-time records were set at Lannas between 15 February 1978 and 18 September 2013. Each dot is a new record.

When Lannas set new all-time records
Date	Kind	Detail
1978-02-15	Record low minimum temperature	Record low minimum temperature -37.7 C (-35.9 F)
1978-12-31	Record low maximum temperature	Record low maximum temperature -32.6 C (-26.7 F)
1987-01-10	Record low minimum temperature	Record low minimum temperature -38.4 C (-37.1 F)
1994-07-29	Record high minimum temperature	Record high minimum temperature 17.7 C (63.9 F)
2000-06-30	Record high minimum temperature	Record high minimum temperature 19.2 C (66.6 F)
2013-09-18	Record daily precipitation	Record daily precipitation 81.2 mm (3.2 in)

Wettest Day of Each Month

Sep: 81.2 mm (3.2 in)

The wettest day on record for each calendar month at Lannas. The most was 81.2 mm (3.2 in) on 18 September 2013.

Record daily precipitation for each month at Lannas
Month	Record daily precipitation (mm)	Date
Jan	34.3 mm (1.4 in)	1 January 1967
Feb	15.7 mm (0.6 in)	13 February 1987
Mar	22.3 mm (0.9 in)	18 March 1995
Apr	29.5 mm (1.2 in)	27 April 2006
May	31.0 mm (1.2 in)	16 May 2005
Jun	34.5 mm (1.4 in)	12 June 2005
Jul	63.4 mm (2.5 in)	25 July 1945
Aug	56.8 mm (2.2 in)	3 August 1972
Sep	81.2 mm (3.2 in)	18 September 2013
Oct	59.2 mm (2.3 in)	5 October 1934
Nov	28.0 mm (1.1 in)	3 November 1977
Dec	37.8 mm (1.5 in)	9 December 2011

Period of Record Coverage

1945 to 2017

73 years of record at Lannas, 1945 to 2017. 3 years have data for under 90 percent of days and are left out of rankings: 1960, 1967, 2017.

Days with data per year at Lannas
Year	Days with data	Share of year	Complete
1945	365	100%	Yes
1946	365	100%	Yes
1947	365	100%	Yes
1948	366	100%	Yes
1949	365	100%	Yes
1950	365	100%	Yes
1951	365	100%	Yes
1952	366	100%	Yes
1953	365	100%	Yes
1954	365	100%	Yes
1955	365	100%	Yes
1956	366	100%	Yes
1957	365	100%	Yes
1958	365	100%	Yes
1959	365	100%	Yes
1960	221	60%	No
1961	365	100%	Yes
1962	365	100%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	365	100%	Yes
1967	303	83%	No
1968	366	100%	Yes
1969	365	100%	Yes
1970	365	100%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1973	365	100%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	365	100%	Yes
1978	365	100%	Yes
1979	365	100%	Yes
1980	366	100%	Yes
1981	365	100%	Yes
1982	365	100%	Yes
1983	365	100%	Yes
1984	366	100%	Yes
1985	365	100%	Yes
1986	365	100%	Yes
1987	365	100%	Yes
1988	366	100%	Yes
1989	365	100%	Yes
1990	365	100%	Yes
1991	365	100%	Yes
1992	366	100%	Yes
1993	365	100%	Yes
1994	365	100%	Yes
1995	365	100%	Yes
1996	366	100%	Yes
1997	365	100%	Yes
1998	365	100%	Yes
1999	365	100%	Yes
2000	366	100%	Yes
2001	365	100%	Yes
2002	365	100%	Yes
2003	365	100%	Yes
2004	366	100%	Yes
2005	365	100%	Yes
2006	365	100%	Yes
2007	365	100%	Yes
2008	366	100%	Yes
2009	365	100%	Yes
2010	365	100%	Yes
2011	365	100%	Yes
2012	366	100%	Yes
2013	365	100%	Yes
2014	365	100%	Yes
2015	365	100%	Yes
2016	366	100%	Yes
2017	90	25%	No

Latest Records

Latest records at Lannas
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
22 February 2017	Lannas, SE	daily rain	6.3 mm (0.25 in)	0.3 mm (0.01 in)	5 years	10 of 100 (Routine)
14 February 2017	Lannas, SE	daily high max	7.7 C (45.9 F)	1.2 C (2.2 F)	16 years	12 of 100 (Routine)
13 February 2017	Lannas, SE	daily high max	6.9 C (44.4 F)	1.4 C (2.5 F)	24 years	16 of 100 (Routine)
19 January 2017	Lannas, SE	daily high max	6.1 C (43.0 F)	0.3 C (0.5 F)	60 years	25 of 100 (Routine)
5 December 2016	Lannas, SE	daily high max	6.9 C (44.4 F)	1.3 C (2.3 F)	10 years	12 of 100 (Routine)
12 October 2016	Lannas, SE	daily low max	0.8 C (33.4 F)	0.6 C (1.1 F)	40 years	20 of 100 (Routine)
21 September 2016	Lannas, SE	daily high min	11.6 C (52.9 F)	0.2 C (0.4 F)	56 years	23 of 100 (Routine)
20 September 2016	Lannas, SE	daily high min	12.7 C (54.9 F)	1.8 C (3.2 F)	67 years	31 of 100 (Routine)
19 September 2016	Lannas, SE	daily high max	22.7 C (72.9 F)	2.4 C (4.3 F)	27 years	21 of 100 (Routine)
11 August 2016	Lannas, SE	daily low min (Tie)	2.6 C (36.7 F)	tie	60 years	6 of 100 (Routine)
1 August 2016	Lannas, SE	daily rain	42.8 mm (1.7 in)	17.4 mm (0.7 in)	55 years	48 of 100 (Notable)
25 June 2016	Lannas, SE	daily high min	14.5 C (58.1 F)	1.8 C (3.2 F)	65 years	31 of 100 (Routine)
18 June 2016	Lannas, SE	daily high min	13.6 C (56.5 F)	0.6 C (1.1 F)	69 years	28 of 100 (Routine)
17 June 2016	Lannas, SE	daily high min	12.5 C (54.5 F)	0.1 C (0.2 F)	63 years	25 of 100 (Routine)
23 May 2016	Lannas, SE	daily rain	16.9 mm (0.7 in)	6.7 mm (0.26 in)	50 years	20 of 100 (Routine)
23 May 2016	Lannas, SE	daily high min (Tie)	10.9 C (51.6 F)	tie	2 years	1 of 100 (Routine)
8 May 2016	Lannas, SE	daily high max	24.9 C (76.8 F)	0.5 C (0.9 F)	10 years	11 of 100 (Routine)
17 April 2016	Lannas, SE	daily high min	2.2 C (36.0 F)	0.1 C (0.2 F)	43 years	19 of 100 (Routine)
6 April 2016	Lannas, SE	daily rain	19.7 mm (0.8 in)	11.5 mm (0.5 in)	46 years	20 of 100 (Routine)
17 March 2016	Lannas, SE	daily high min	2.3 C (36.1 F)	1.4 C (2.5 F)	51 years	23 of 100 (Routine)

Climate Trend

70 complete years, 1945 to 2016

One stripe for each of 70 complete years at Lannas, 1945 to 2016. Blue stripes are years cooler than the station's own mean of 3.0 C (37.4 F); red stripes are warmer. The coolest year was 1985, at 0.2 C (32.4 F), and the warmest was 2014, at 5.3 C (41.6 F). The strongest colour marks a difference of 2.8 C (5.0 F).

Annual mean temperature at Lannas as warming stripes, 1945 to 2016
Year	Annual mean temperature	Difference from the station mean
1945	3.5 C	+0.48 C
1946	4.0 C	+1.01 C
1947	2.7 C	-0.28 C
1948	3.6 C	+0.57 C
1949	4.3 C	+1.34 C
1950	3.1 C	+0.07 C
1951	2.5 C	-0.50 C
1952	1.8 C	-1.22 C
1953	3.9 C	+0.85 C
1954	2.8 C	-0.24 C
1955	1.5 C	-1.53 C
1956	1.4 C	-1.60 C
1957	2.8 C	-0.19 C
1958	1.7 C	-1.30 C
1959	4.2 C	+1.19 C
1961	3.8 C	+0.80 C
1962	1.6 C	-1.39 C
1963	2.0 C	-1.02 C
1964	2.6 C	-0.39 C
1965	1.8 C	-1.18 C
1966	0.9 C	-2.10 C
1968	1.3 C	-1.68 C
1969	1.8 C	-1.25 C
1970	1.9 C	-1.10 C
1971	2.5 C	-0.50 C
1972	3.5 C	+0.48 C
1973	3.2 C	+0.23 C
1974	4.1 C	+1.05 C
1975	4.1 C	+1.12 C
1976	2.0 C	-1.04 C
1977	2.4 C	-0.58 C
1978	1.3 C	-1.71 C
1979	1.6 C	-1.38 C
1980	1.3 C	-1.72 C
1981	1.7 C	-1.26 C
1982	2.4 C	-0.60 C
1983	2.8 C	-0.19 C
1984	3.2 C	+0.19 C
1985	0.2 C	-2.78 C
1986	2.1 C	-0.89 C
1987	1.2 C	-1.79 C
1988	3.2 C	+0.17 C
1989	4.0 C	+1.03 C
1990	4.3 C	+1.32 C
1991	3.6 C	+0.59 C
1992	3.7 C	+0.67 C
1993	3.2 C	+0.18 C
1994	2.2 C	-0.76 C
1995	3.0 C	-0.02 C
1996	2.4 C	-0.61 C
1997	4.1 C	+1.14 C
1998	3.4 C	+0.37 C
1999	3.5 C	+0.48 C
2000	4.8 C	+1.82 C
2001	3.5 C	+0.46 C
2002	4.2 C	+1.24 C
2003	3.7 C	+0.67 C
2004	3.8 C	+0.78 C
2005	4.0 C	+1.04 C
2006	4.7 C	+1.67 C
2007	4.0 C	+0.97 C
2008	4.3 C	+1.31 C
2009	3.5 C	+0.50 C
2010	1.6 C	-1.45 C
2011	4.5 C	+1.53 C
2012	3.5 C	+0.53 C
2013	3.9 C	+0.92 C
2014	5.3 C	+2.31 C
2015	4.8 C	+1.83 C
2016	4.1 C	+1.12 C

The annual mean temperature here has risen by 0.2 C (0.1 to 0.3) per decade over 1945 to 2016. In Fahrenheit: 0.4 F (0.2 to 0.6) per decade. The slope is a straight line fitted to 70 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Lannas
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.2 C (0.1 to 0.3) per decade	0.4 F (0.2 to 0.6) per decade	1945 to 2016	70	Rise
Mean daily maximum	0.15 C (0.02 to 0.28) per decade	0.26 F (0.03 to 0.50) per decade	1945 to 2016	70	Rise
Mean daily minimum	0.3 C (0.2 to 0.4) per decade	0.5 F (0.3 to 0.7) per decade	1945 to 2016	70	Rise

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1931 to 2017

Yearly extremes at Lannas: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	33.2 C (91.8 F)	1968	29.0 C (84.2 F)	73
Coldest night (TNn)	-38.4 C (-37.1 F)	1987	-30.0 C (-22.0 F)	73
Wettest day (Rx1day)	81.2 mm (3.2 in)	2013	28.2 mm (1.1 in)	87
Wettest five days (Rx5day)	188.5 mm (7.4 in)	2013	49.7 mm (2.0 in)	87
Longest dry spell (CDD)	55 days	2008	23 days	87

Hottest day (TXx)

The hottest day of the year at Lannas, 1931 to 2017. The record is 33.2 C (91.8 F) in 1968, marked on the chart; the median year is 29.0 C (84.2 F).

Hottest day (TXx) at Lannas by year
Year	Hottest day (TXx)
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	33.0 C (91.4 F)
1946	33.0 C (91.4 F)
1947	33.0 C (91.4 F)
1948	28.9 C (84.0 F)
1949	29.0 C (84.2 F)
1950	25.8 C (78.4 F)
1951	25.0 C (77.0 F)
1952	29.6 C (85.3 F)
1953	30.0 C (86.0 F)
1954	27.0 C (80.6 F)
1955	30.2 C (86.4 F)
1956	26.9 C (80.4 F)
1957	28.0 C (82.4 F)
1958	30.2 C (86.4 F)
1959	29.9 C (85.8 F)
1960	15.3 C (59.5 F)
1961	28.3 C (82.9 F)
1962	23.9 C (75.0 F)
1963	27.8 C (82.0 F)
1964	26.6 C (79.9 F)
1965	27.5 C (81.5 F)
1966	30.2 C (86.4 F)
1967	25.6 C (78.1 F)
1968	33.2 C (91.8 F)
1969	30.4 C (86.7 F)
1970	29.0 C (84.2 F)
1971	28.0 C (82.4 F)
1972	30.5 C (86.9 F)
1973	30.9 C (87.6 F)
1974	29.0 C (84.2 F)
1975	30.0 C (86.0 F)
1976	27.3 C (81.1 F)
1977	28.8 C (83.8 F)
1978	28.0 C (82.4 F)
1979	29.0 C (84.2 F)
1980	29.0 C (84.2 F)
1981	27.3 C (81.1 F)
1982	29.4 C (84.9 F)
1983	29.8 C (85.6 F)
1984	26.5 C (79.7 F)
1985	28.0 C (82.4 F)
1986	31.8 C (89.2 F)
1987	27.9 C (82.2 F)
1988	31.2 C (88.2 F)
1989	28.7 C (83.7 F)
1990	27.7 C (81.9 F)
1991	31.7 C (89.1 F)
1992	27.4 C (81.3 F)
1993	27.4 C (81.3 F)
1994	32.7 C (90.9 F)
1995	28.9 C (84.0 F)
1996	27.6 C (81.7 F)
1997	29.6 C (85.3 F)
1998	23.8 C (74.8 F)
1999	29.5 C (85.1 F)
2000	29.9 C (85.8 F)
2001	28.0 C (82.4 F)
2002	29.9 C (85.8 F)
2003	32.1 C (89.8 F)
2004	30.5 C (86.9 F)
2005	29.3 C (84.7 F)
2006	31.3 C (88.3 F)
2007	30.2 C (86.4 F)
2008	31.5 C (88.7 F)
2009	30.1 C (86.2 F)
2010	28.5 C (83.3 F)
2011	31.0 C (87.8 F)
2012	26.4 C (79.5 F)
2013	28.1 C (82.6 F)
2014	32.1 C (89.8 F)
2015	31.8 C (89.2 F)
2016	28.4 C (83.1 F)
2017	12.2 C (54.0 F)

Coldest night (TNn)

The coldest night of the year at Lannas, 1931 to 2017. The record is -38.4 C (-37.1 F) in 1987, marked on the chart; the median year is -30.0 C (-22.0 F).

Coldest night (TNn) at Lannas by year
Year	Coldest night (TNn)
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	-30.0 C (-22.0 F)
1946	-30.0 C (-22.0 F)
1947	-35.0 C (-31.0 F)
1948	-35.0 C (-31.0 F)
1949	-26.9 C (-16.4 F)
1950	-31.5 C (-24.7 F)
1951	-30.3 C (-22.5 F)
1952	-27.5 C (-17.5 F)
1953	-30.0 C (-22.0 F)
1954	-29.5 C (-21.1 F)
1955	-33.3 C (-27.9 F)
1956	-35.2 C (-31.4 F)
1957	-31.4 C (-24.5 F)
1958	-33.3 C (-27.9 F)
1959	-31.2 C (-24.2 F)
1960	-26.1 C (-15.0 F)
1961	-27.0 C (-16.6 F)
1962	-28.4 C (-19.1 F)
1963	-30.4 C (-22.7 F)
1964	-28.0 C (-18.4 F)
1965	-30.9 C (-23.6 F)
1966	-37.1 C (-34.8 F)
1967	-34.8 C (-30.6 F)
1968	-32.6 C (-26.7 F)
1969	-33.1 C (-27.6 F)
1970	-33.6 C (-28.5 F)
1971	-29.2 C (-20.6 F)
1972	-28.8 C (-19.8 F)
1973	-30.0 C (-22.0 F)
1974	-24.0 C (-11.2 F)
1975	-28.2 C (-18.8 F)
1976	-32.1 C (-25.8 F)
1977	-30.9 C (-23.6 F)
1978	-37.7 C (-35.9 F)
1979	-33.9 C (-29.0 F)
1980	-32.9 C (-27.2 F)
1981	-30.4 C (-22.7 F)
1982	-32.8 C (-27.0 F)
1983	-28.3 C (-18.9 F)
1984	-30.6 C (-23.1 F)
1985	-35.9 C (-32.6 F)
1986	-31.5 C (-24.7 F)
1987	-38.4 C (-37.1 F)
1988	-24.3 C (-11.7 F)
1989	-32.2 C (-26.0 F)
1990	-24.4 C (-11.9 F)
1991	-22.3 C (-8.1 F)
1992	-21.2 C (-6.2 F)
1993	-24.7 C (-12.5 F)
1994	-32.2 C (-26.0 F)
1995	-28.4 C (-19.1 F)
1996	-29.0 C (-20.2 F)
1997	-27.7 C (-17.9 F)
1998	-24.0 C (-11.2 F)
1999	-35.0 C (-31.0 F)
2000	-25.7 C (-14.3 F)
2001	-27.0 C (-16.6 F)
2002	-28.1 C (-18.6 F)
2003	-30.6 C (-23.1 F)
2004	-27.7 C (-17.9 F)
2005	-27.8 C (-18.0 F)
2006	-26.6 C (-15.9 F)
2007	-28.4 C (-19.1 F)
2008	-20.8 C (-5.4 F)
2009	-29.0 C (-20.2 F)
2010	-33.3 C (-27.9 F)
2011	-30.0 C (-22.0 F)
2012	-33.1 C (-27.6 F)
2013	-28.3 C (-18.9 F)
2014	-22.8 C (-9.0 F)
2015	-23.1 C (-9.6 F)
2016	-26.9 C (-16.4 F)
2017	-26.6 C (-15.9 F)

Wettest day (Rx1day)

The wettest day of the year at Lannas, 1931 to 2017. The record is 81.2 mm (3.2 in) in 2013, marked on the chart; the median year is 28.2 mm (1.1 in).

Wettest day (Rx1day) at Lannas by year
Year	Wettest day (Rx1day)
1931	25.0 mm (1.0 in)
1932	20.5 mm (0.8 in)
1933	34.3 mm (1.4 in)
1934	59.2 mm (2.3 in)
1935	27.7 mm (1.1 in)
1936	31.0 mm (1.2 in)
1937	29.0 mm (1.1 in)
1938	36.7 mm (1.4 in)
1939	20.0 mm (0.8 in)
1940	26.9 mm (1.1 in)
1941	28.8 mm (1.1 in)
1942	27.4 mm (1.1 in)
1943	20.3 mm (0.8 in)
1944	25.2 mm (1.0 in)
1945	63.4 mm (2.5 in)
1946	40.2 mm (1.6 in)
1947	34.2 mm (1.3 in)
1948	29.4 mm (1.2 in)
1949	22.8 mm (0.9 in)
1950	36.3 mm (1.4 in)
1951	28.5 mm (1.1 in)
1952	28.0 mm (1.1 in)
1953	38.3 mm (1.5 in)
1954	54.5 mm (2.1 in)
1955	25.1 mm (1.0 in)
1956	26.9 mm (1.1 in)
1957	26.4 mm (1.0 in)
1958	31.5 mm (1.2 in)
1959	16.0 mm (0.6 in)
1960	40.3 mm (1.6 in)
1961	31.9 mm (1.3 in)
1962	28.2 mm (1.1 in)
1963	25.5 mm (1.0 in)
1964	33.6 mm (1.3 in)
1965	24.3 mm (1.0 in)
1966	44.9 mm (1.8 in)
1967	34.3 mm (1.4 in)
1968	21.0 mm (0.8 in)
1969	26.8 mm (1.1 in)
1970	31.4 mm (1.2 in)
1971	24.7 mm (1.0 in)
1972	56.8 mm (2.2 in)
1973	25.6 mm (1.0 in)
1974	42.7 mm (1.7 in)
1975	20.3 mm (0.8 in)
1976	21.3 mm (0.8 in)
1977	28.0 mm (1.1 in)
1978	32.8 mm (1.3 in)
1979	32.3 mm (1.3 in)
1980	38.5 mm (1.5 in)
1981	23.3 mm (0.9 in)
1982	36.3 mm (1.4 in)
1983	26.8 mm (1.1 in)
1984	48.6 mm (1.9 in)
1985	18.5 mm (0.7 in)
1986	22.8 mm (0.9 in)
1987	17.0 mm (0.7 in)
1988	20.9 mm (0.8 in)
1989	27.7 mm (1.1 in)
1990	49.7 mm (2.0 in)
1991	29.6 mm (1.2 in)
1992	31.8 mm (1.3 in)
1993	34.2 mm (1.3 in)
1994	17.7 mm (0.7 in)
1995	22.7 mm (0.9 in)
1996	20.4 mm (0.8 in)
1997	20.0 mm (0.8 in)
1998	32.5 mm (1.3 in)
1999	26.2 mm (1.0 in)
2000	34.6 mm (1.4 in)
2001	46.6 mm (1.8 in)
2002	22.9 mm (0.9 in)
2003	34.2 mm (1.3 in)
2004	20.5 mm (0.8 in)
2005	45.2 mm (1.8 in)
2006	33.0 mm (1.3 in)
2007	24.7 mm (1.0 in)
2008	20.7 mm (0.8 in)
2009	49.6 mm (2.0 in)
2010	27.6 mm (1.1 in)
2011	53.5 mm (2.1 in)
2012	34.6 mm (1.4 in)
2013	81.2 mm (3.2 in)
2014	22.1 mm (0.9 in)
2015	21.1 mm (0.8 in)
2016	42.8 mm (1.7 in)
2017	10.1 mm (0.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at Lannas, 1931 to 2017. The record is 188.5 mm (7.4 in) in 2013, marked on the chart; the median year is 49.7 mm (2.0 in).

Wettest five days (Rx5day) at Lannas by year
Year	Wettest five days (Rx5day)
1931	49.7 mm (2.0 in)
1932	49.7 mm (2.0 in)
1933	50.7 mm (2.0 in)
1934	73.2 mm (2.9 in)
1935	73.7 mm (2.9 in)
1936	43.9 mm (1.7 in)
1937	45.2 mm (1.8 in)
1938	87.9 mm (3.5 in)
1939	32.4 mm (1.3 in)
1940	53.5 mm (2.1 in)
1941	55.5 mm (2.2 in)
1942	40.1 mm (1.6 in)
1943	40.8 mm (1.6 in)
1944	47.4 mm (1.9 in)
1945	118.5 mm (4.7 in)
1946	60.8 mm (2.4 in)
1947	67.3 mm (2.6 in)
1948	58.1 mm (2.3 in)
1949	55.4 mm (2.2 in)
1950	92.2 mm (3.6 in)
1951	40.8 mm (1.6 in)
1952	61.9 mm (2.4 in)
1953	58.3 mm (2.3 in)
1954	63.1 mm (2.5 in)
1955	55.3 mm (2.2 in)
1956	58.9 mm (2.3 in)
1957	54.0 mm (2.1 in)
1958	43.8 mm (1.7 in)
1959	40.2 mm (1.6 in)
1960	55.1 mm (2.2 in)
1961	95.7 mm (3.8 in)
1962	52.1 mm (2.1 in)
1963	40.3 mm (1.6 in)
1964	74.8 mm (2.9 in)
1965	48.4 mm (1.9 in)
1966	48.0 mm (1.9 in)
1967	60.8 mm (2.4 in)
1968	48.5 mm (1.9 in)
1969	34.0 mm (1.3 in)
1970	64.0 mm (2.5 in)
1971	35.7 mm (1.4 in)
1972	66.4 mm (2.6 in)
1973	40.3 mm (1.6 in)
1974	74.7 mm (2.9 in)
1975	42.0 mm (1.7 in)
1976	46.8 mm (1.8 in)
1977	46.6 mm (1.8 in)
1978	36.6 mm (1.4 in)
1979	45.5 mm (1.8 in)
1980	48.3 mm (1.9 in)
1981	38.7 mm (1.5 in)
1982	37.1 mm (1.5 in)
1983	60.8 mm (2.4 in)
1984	53.3 mm (2.1 in)
1985	38.2 mm (1.5 in)
1986	44.6 mm (1.8 in)
1987	38.7 mm (1.5 in)
1988	33.0 mm (1.3 in)
1989	48.7 mm (1.9 in)
1990	72.6 mm (2.9 in)
1991	47.2 mm (1.9 in)
1992	72.1 mm (2.8 in)
1993	67.7 mm (2.7 in)
1994	30.4 mm (1.2 in)
1995	53.9 mm (2.1 in)
1996	34.7 mm (1.4 in)
1997	33.5 mm (1.3 in)
1998	73.7 mm (2.9 in)
1999	48.4 mm (1.9 in)
2000	85.3 mm (3.4 in)
2001	84.3 mm (3.3 in)
2002	50.0 mm (2.0 in)
2003	67.7 mm (2.7 in)
2004	34.6 mm (1.4 in)
2005	88.8 mm (3.5 in)
2006	71.2 mm (2.8 in)
2007	32.1 mm (1.3 in)
2008	42.9 mm (1.7 in)
2009	86.5 mm (3.4 in)
2010	45.8 mm (1.8 in)
2011	75.9 mm (3.0 in)
2012	44.4 mm (1.7 in)
2013	188.5 mm (7.4 in)
2014	48.0 mm (1.9 in)
2015	49.0 mm (1.9 in)
2016	69.5 mm (2.7 in)
2017	21.9 mm (0.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at Lannas, 1931 to 2017. The record is 55 days in 2008, marked on the chart; the median year is 23 days.

Longest dry spell (CDD) at Lannas by year
Year	Longest dry spell (CDD)
1931	40 days
1932	30 days
1933	37 days
1934	20 days
1935	28 days
1936	27 days
1937	24 days
1938	25 days
1939	27 days
1940	26 days
1941	44 days
1942	32 days
1943	20 days
1944	34 days
1945	19 days
1946	18 days
1947	42 days
1948	34 days
1949	17 days
1950	20 days
1951	21 days
1952	20 days
1953	16 days
1954	32 days
1955	25 days
1956	29 days
1957	28 days
1958	19 days
1959	21 days
1960	37 days
1961	20 days
1962	15 days
1963	22 days
1964	32 days
1965	26 days
1966	28 days
1967	18 days
1968	21 days
1969	26 days
1970	23 days
1971	19 days
1972	21 days
1973	21 days
1974	32 days
1975	25 days
1976	34 days
1977	17 days
1978	21 days
1979	11 days
1980	19 days
1981	32 days
1982	21 days
1983	22 days
1984	19 days
1985	21 days
1986	24 days
1987	24 days
1988	28 days
1989	20 days
1990	27 days
1991	23 days
1992	20 days
1993	18 days
1994	32 days
1995	35 days
1996	28 days
1997	23 days
1998	14 days
1999	24 days
2000	22 days
2001	17 days
2002	24 days
2003	31 days
2004	17 days
2005	17 days
2006	17 days
2007	30 days
2008	55 days
2009	18 days
2010	20 days
2011	23 days
2012	31 days
2013	25 days
2014	20 days
2015	21 days
2016	22 days
2017	36 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Frost Dates and Growing Season

70 years with a frost

Across 70 years with a frost, the median last spring frost at Lannas falls on 31 May and the median first autumn frost on 11 September, which leaves a median of 103 days between them.

In 1987 to 2016 the median growing season was 113 days. That is 16 days more than in 1945 to 1976.

Fitted over all years, the growing season changes by +3.1 days per decade at this station.

Frost dates and growing season at Lannas
Measure	Median, all years	Earliest period (1945 to 1976)	Recent period (1987 to 2016)	Recent against earliest	Fitted trend
Last spring frost	31 May	6 June	28 May	9 days earlier	-1.6 days per decade
First autumn frost	11 September	11 September	15 September	4 days later	+1.5 days per decade
Growing days	103 days	97 days	113 days	16 days more	+3.1 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

85 years, 1931 to 2016

A day with at least 28.7 mm (1.1 in) of rain is expected about once in 2 years. A day with at least 76.2 mm (3.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Lannas: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	28.7 mm (1.1 in)
5 years	38.5 mm (1.5 in)
10 years	45.9 mm (1.8 in)
25 years	56.8 mm (2.2 in)
50 years	66.0 mm (2.6 in)
100 years	76.2 mm (3.0 in)	Longer than the 85 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 85 years of values from 1931 to 2016.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 81.2 mm (3.2 in) in 2013; 63.4 mm (2.5 in) in 1945; 59.2 mm (2.3 in) in 1934.

Station Changes

1 suspected

One change was suspected in the annual mean temperature of Lannas, at 1999. Each is measured against neighbouring stations.

Relative to 5 neighbouring stations, the station's annual mean temperature from 1999 ran 0.2 C (0.3 F) higher than in the years before (likely change).

Suspected changes in the annual mean temperature at Lannas, against neighbouring stations
Year	Shift (C)	Shift (F)	Strength	Neighbours
1999	+0.2	+0.3	likely	5

Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.

Climate Twins

2002 to 2016 against 1961 to 1990

Over 2002 to 2016, Lannas had a mean temperature of 4.0 C (39.2 F) and 585.3 mm (23.0 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Delsbo (Sweden, 164 km away), Edsbyn (Sweden, 220 km away) and Leksand (Sweden, 304 km away).

Climate twins of Lannas: stations whose 1961 to 1990 climate is closest to its 2002 to 2016 climate
Twin station	Country	Distance away	Mean temperature, 1961-1990	Rain a year, 1961-1990	Climate difference
Delsbo	Sweden	164 km (102 mi)	3.7 C (38.7 F)	609.9 mm (24.0 in)	0.66
Edsbyn	Sweden	220 km (137 mi)	3.7 C (38.7 F)	579.1 mm (22.8 in)	0.74
Leksand	Sweden	304 km (189 mi)	4.0 C (39.2 F)	598.6 mm (23.6 in)	0.76

Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.

Download the Data

Data for Lannas standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Lannas threshold days by year: CSV or JSON. Field meanings are on the data page.

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). Records are computed by this site and are not official.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).