Arlanda Weather Records (SWE00139060)

Record envelope, standing records and threshold days for Arlanda (SWE00139060), Sweden, with 54 years of record.

Key Facts for Arlanda

Arlanda (SWE00139060) is a weather station in Sweden at 59.66 latitude and 17.95 longitude, 26 m (85 ft) above sea level.
The station reports from 1960 to 2013, 54 years of record.
1,464 records set at Arlanda still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Arlanda set a daily record low minimum temperature of 4.0 C (39.2 F) on 24 August 2013.

About the Station

Location: Sweden, 59.66 latitude, 17.95 longitude.
Elevation: 26 m (85 ft).
Period of record: 1960 to 2013, 54 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 Arlanda. 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 Arlanda, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	10.8 C (51.4 F)	-27.8 C (-18.0 F)	n/a	n/a
Feb	12.3 C (54.1 F)	-29.9 C (-21.8 F)	n/a	n/a
Mar	16.9 C (62.4 F)	-21.6 C (-6.9 F)	n/a	n/a
Apr	26.0 C (78.8 F)	-11.8 C (10.8 F)	n/a	n/a
May	27.9 C (82.2 F)	-5.2 C (22.6 F)	n/a	n/a
Jun	31.0 C (87.8 F)	-1.9 C (28.6 F)	n/a	n/a
Jul	33.5 C (92.3 F)	3.9 C (39.0 F)	n/a	n/a
Aug	35.3 C (95.5 F)	-0.1 C (31.8 F)	n/a	n/a
Sep	28.0 C (82.4 F)	-4.7 C (23.5 F)	n/a	n/a
Oct	21.0 C (69.8 F)	-11.3 C (11.7 F)	n/a	n/a
Nov	13.4 C (56.1 F)	-20.4 C (-4.7 F)	n/a	n/a
Dec	11.7 C (53.1 F)	-26.8 C (-16.2 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Arlanda still stand. 1968 holds the most, with 59.

Standing records at Arlanda by the year they were set
Year set	Standing records
1960	15
1961	35
1963	11
1964	17
1965	45
1966	55
1967	19
1968	59
1969	44
1970	36
1971	33
1972	16
1973	46
1974	19
1975	30
1976	24
1977	41
1978	50
1979	20
1980	23
1981	26
1982	26
1983	27
1984	24
1985	37
1986	24
1987	49
1988	22
1989	52
1990	50
1991	16
1992	32
1993	35
1994	36
1995	36
1996	28
1997	37
2006	59
2007	38
2008	28
2009	19
2010	40
2011	39
2012	24
2013	22

All-Time Record Progression

1 new records

1 all-time records were set at Arlanda between 29 July 1994 and 29 July 1994. Each dot is a new record.

Wettest Day of Each Month

Jul: 47.1 mm (1.9 in)

The wettest day on record for each calendar month at Arlanda. The most was 47.1 mm (1.9 in) on 7 July 1966.

Record daily precipitation for each month at Arlanda
Month	Record daily precipitation (mm)	Date
Jan	19.4 mm (0.8 in)	15 January 1974
Feb	20.6 mm (0.8 in)	22 February 2012
Mar	24.1 mm (0.9 in)	21 March 1974
Apr	27.7 mm (1.1 in)	24 April 1980
May	22.0 mm (0.9 in)	18 May 1968
Jun	32.2 mm (1.3 in)	13 June 2009
Jul	47.1 mm (1.9 in)	7 July 1966
Aug	43.5 mm (1.7 in)	29 August 1986
Sep	31.4 mm (1.2 in)	29 September 1965
Oct	27.9 mm (1.1 in)	2 October 1974
Nov	34.0 mm (1.3 in)	22 November 1973
Dec	22.0 mm (0.9 in)	19 December 1963

Period of Record Coverage

1960 to 2013

45 years of record at Arlanda, 1960 to 2013. 4 years have data for under 90 percent of days and are left out of rankings: 1960, 1963, 2006, 2013.

Days with data per year at Arlanda
Year	Days with data	Share of year	Complete
1960	323	88%	No
1961	365	100%	Yes
1963	214	59%	No
1964	366	100%	Yes
1965	365	100%	Yes
1966	365	100%	Yes
1967	365	100%	Yes
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
2006	245	67%	No
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	243	67%	No

Latest Records

Latest records at Arlanda
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
24 August 2013	Arlanda, SE	daily low min	4.0 C (39.2 F)	0.9 C (1.6 F)	40 years	19 of 100 (Routine)
7 August 2013	Arlanda, SE	daily high min	19.0 C (66.2 F)	0.2 C (0.4 F)	38 years	16 of 100 (Routine)
12 July 2013	Arlanda, SE	daily low min	6.1 C (43.0 F)	1.6 C (2.9 F)	44 years	23 of 100 (Routine)
24 June 2013	Arlanda, SE	daily high min	15.6 C (60.1 F)	0.6 C (1.1 F)	24 years	13 of 100 (Routine)
23 June 2013	Arlanda, SE	daily high min	15.7 C (60.3 F)	1.3 C (2.3 F)	24 years	16 of 100 (Routine)
2 June 2013	Arlanda, SE	daily high min	14.0 C (57.2 F)	0.2 C (0.4 F)	34 years	15 of 100 (Routine)
29 May 2013	Arlanda, SE	daily high min	14.1 C (57.4 F)	1.0 C (1.8 F)	28 years	15 of 100 (Routine)
18 May 2013	Arlanda, SE	daily high min	13.8 C (56.8 F)	1.1 C (2.0 F)	42 years	20 of 100 (Routine)
10 May 2013	Arlanda, SE	daily high min	11.7 C (53.1 F)	1.5 C (2.7 F)	0 years	9 of 100 (Routine)
9 May 2013	Arlanda, SE	daily high min	10.5 C (50.9 F)	2.0 C (3.6 F)	27 years	18 of 100 (Routine)
19 April 2013	Arlanda, SE	daily high min	7.0 C (44.6 F)	2.9 C (5.2 F)	42 years	25 of 100 (Routine)
18 April 2013	Arlanda, SE	daily rain	14.7 mm (0.6 in)	3.8 mm (0.15 in)	24 years	20 of 100 (Routine)
12 April 2013	Arlanda, SE	daily rain	10.2 mm (0.4 in)	0.6 mm (0.02 in)	4 years	7 of 100 (Routine)
29 March 2013	Arlanda, SE	daily low min	-8.7 C (16.3 F)	1.1 C (2.0 F)	36 years	17 of 100 (Routine)
15 March 2013	Arlanda, SE	daily low min	-19.0 C (-2.2 F)	2.3 C (4.1 F)	44 years	22 of 100 (Routine)
11 March 2013	Arlanda, SE	daily low min	-15.2 C (4.6 F)	2.4 C (4.3 F)	26 years	16 of 100 (Routine)
9 March 2013	Arlanda, SE	daily low min	-12.5 C (9.5 F)	0.9 C (1.6 F)	52 years	21 of 100 (Routine)
27 February 2013	Arlanda, SE	daily high max	8.4 C (47.1 F)	0.7 C (1.3 F)	52 years	21 of 100 (Routine)
16 February 2013	Arlanda, SE	daily high min (Tie)	0.7 C (33.3 F)	tie	39 years	4 of 100 (Routine)
25 January 2013	Arlanda, SE	daily low min	-19.6 C (-3.3 F)	1.5 C (2.7 F)	34 years	17 of 100 (Routine)

Climate Trend

41 complete years, 1961 to 2012

One stripe for each of 41 complete years at Arlanda, 1961 to 2012. Blue stripes are years cooler than the station's own mean of 6.0 C (42.8 F); red stripes are warmer. The coolest year was 1985, at 4.0 C (39.3 F), and the warmest was 1989, at 7.9 C (46.2 F). The strongest colour marks a difference of 2.0 C (3.6 F).

Annual mean temperature at Arlanda as warming stripes, 1961 to 2012
Year	Annual mean temperature	Difference from the station mean
1961	6.4 C	+0.42 C
1964	5.5 C	-0.51 C
1965	4.4 C	-1.61 C
1966	4.4 C	-1.64 C
1967	5.8 C	-0.25 C
1968	5.1 C	-0.95 C
1969	5.0 C	-1.07 C
1970	4.3 C	-1.73 C
1971	5.8 C	-0.21 C
1972	6.6 C	+0.53 C
1973	6.2 C	+0.20 C
1974	6.8 C	+0.74 C
1975	7.5 C	+1.47 C
1976	5.3 C	-0.69 C
1977	5.7 C	-0.36 C
1978	5.1 C	-0.97 C
1979	5.2 C	-0.81 C
1980	5.2 C	-0.83 C
1981	5.4 C	-0.65 C
1982	6.3 C	+0.30 C
1983	6.7 C	+0.70 C
1984	6.7 C	+0.65 C
1985	4.0 C	-1.98 C
1986	5.6 C	-0.42 C
1987	4.4 C	-1.67 C
1988	6.5 C	+0.51 C
1989	7.9 C	+1.89 C
1990	7.8 C	+1.79 C
1991	7.0 C	+0.97 C
1992	7.3 C	+1.30 C
1993	6.1 C	+0.03 C
1994	6.0 C	0.00 C
1995	5.9 C	-0.10 C
1996	5.3 C	-0.77 C
1997	6.8 C	+0.76 C
2007	7.2 C	+1.22 C
2008	7.7 C	+1.65 C
2009	6.9 C	+0.86 C
2010	5.0 C	-1.00 C
2011	7.7 C	+1.68 C
2012	6.7 C	+0.63 C

The annual mean temperature here has risen by 0.3 C (0.1 to 0.6) per decade over 1961 to 2012. In Fahrenheit: 0.6 F (0.2 to 1.0) per decade. The slope is a straight line fitted to 41 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Arlanda
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.3 C (0.1 to 0.6) per decade	0.6 F (0.2 to 1.0) per decade	1961 to 2012	41	Rise
Mean daily maximum	0.3 C (0.1 to 0.5) per decade	0.5 F (0.1 to 0.9) per decade	1961 to 2012	41	Rise
Mean daily minimum	0.4 C (0.1 to 0.6) per decade	0.7 F (0.3 to 1.1) per decade	1961 to 2012	41	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

1960 to 2013

Yearly extremes at Arlanda: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	35.3 C (95.5 F)	1975	29.4 C (84.9 F)	45
Coldest night (TNn)	-29.9 C (-21.8 F)	1966	-20.6 C (-5.1 F)	45
Wettest day (Rx1day)	47.1 mm (1.9 in)	1966	29.8 mm (1.2 in)	45
Wettest five days (Rx5day)	104.6 mm (4.1 in)	1980	47.1 mm (1.9 in)	45
Longest dry spell (CDD)	56 days	1964	23 days	45

Hottest day (TXx)

The hottest day of the year at Arlanda, 1960 to 2013. The record is 35.3 C (95.5 F) in 1975, marked on the chart; the median year is 29.4 C (84.9 F).

Hottest day (TXx) at Arlanda by year
Year	Hottest day (TXx)
1960	27.5 C (81.5 F)
1961	29.0 C (84.2 F)
1963	28.7 C (83.7 F)
1964	26.3 C (79.3 F)
1965	24.8 C (76.6 F)
1966	29.5 C (85.1 F)
1967	28.3 C (82.9 F)
1968	30.3 C (86.5 F)
1969	31.0 C (87.8 F)
1970	31.0 C (87.8 F)
1971	29.2 C (84.6 F)
1972	30.6 C (87.1 F)
1973	31.2 C (88.2 F)
1974	27.0 C (80.6 F)
1975	35.3 C (95.5 F)
1976	30.5 C (86.9 F)
1977	29.4 C (84.9 F)
1978	29.3 C (84.7 F)
1979	29.9 C (85.8 F)
1980	28.7 C (83.7 F)
1981	27.4 C (81.3 F)
1982	32.0 C (89.6 F)
1983	32.7 C (90.9 F)
1984	27.3 C (81.1 F)
1985	27.6 C (81.7 F)
1986	30.7 C (87.3 F)
1987	28.8 C (83.8 F)
1988	29.0 C (84.2 F)
1989	31.2 C (88.2 F)
1990	28.2 C (82.8 F)
1991	30.0 C (86.0 F)
1992	27.9 C (82.2 F)
1993	27.2 C (81.0 F)
1994	33.5 C (92.3 F)
1995	29.6 C (85.3 F)
1996	28.6 C (83.5 F)
1997	29.4 C (84.9 F)
2006	31.8 C (89.2 F)
2007	30.0 C (86.0 F)
2008	31.1 C (88.0 F)
2009	30.1 C (86.2 F)
2010	32.4 C (90.3 F)
2011	29.0 C (84.2 F)
2012	27.3 C (81.1 F)
2013	29.2 C (84.6 F)

Coldest night (TNn)

The coldest night of the year at Arlanda, 1960 to 2013. The record is -29.9 C (-21.8 F) in 1966, marked on the chart; the median year is -20.6 C (-5.1 F).

Coldest night (TNn) at Arlanda by year
Year	Coldest night (TNn)
1960	-22.1 C (-7.8 F)
1961	-20.0 C (-4.0 F)
1963	-19.9 C (-3.8 F)
1964	-19.3 C (-2.7 F)
1965	-21.9 C (-7.4 F)
1966	-29.9 C (-21.8 F)
1967	-23.9 C (-11.0 F)
1968	-24.2 C (-11.6 F)
1969	-26.7 C (-16.1 F)
1970	-28.8 C (-19.8 F)
1971	-22.0 C (-7.6 F)
1972	-15.0 C (5.0 F)
1973	-20.6 C (-5.1 F)
1974	-14.2 C (6.4 F)
1975	-14.8 C (5.4 F)
1976	-20.7 C (-5.3 F)
1977	-18.9 C (-2.0 F)
1978	-23.6 C (-10.5 F)
1979	-27.8 C (-18.0 F)
1980	-22.2 C (-8.0 F)
1981	-19.3 C (-2.7 F)
1982	-19.6 C (-3.3 F)
1983	-19.0 C (-2.2 F)
1984	-17.8 C (0.0 F)
1985	-26.7 C (-16.1 F)
1986	-22.7 C (-8.9 F)
1987	-26.9 C (-16.4 F)
1988	-17.5 C (0.5 F)
1989	-26.8 C (-16.2 F)
1990	-10.1 C (13.8 F)
1991	-12.4 C (9.7 F)
1992	-12.0 C (10.4 F)
1993	-15.3 C (4.5 F)
1994	-20.6 C (-5.1 F)
1995	-23.0 C (-9.4 F)
1996	-24.1 C (-11.4 F)
1997	-16.5 C (2.3 F)
2006	-8.7 C (16.3 F)
2007	-19.5 C (-3.1 F)
2008	-13.2 C (8.2 F)
2009	-17.8 C (0.0 F)
2010	-26.4 C (-15.5 F)
2011	-25.5 C (-13.9 F)
2012	-19.6 C (-3.3 F)
2013	-21.7 C (-7.1 F)

Wettest day (Rx1day)

The wettest day of the year at Arlanda, 1960 to 2013. The record is 47.1 mm (1.9 in) in 1966, marked on the chart; the median year is 29.8 mm (1.2 in).

Wettest day (Rx1day) at Arlanda by year
Year	Wettest day (Rx1day)
1960	23.0 mm (0.9 in)
1961	37.4 mm (1.5 in)
1963	31.9 mm (1.3 in)
1964	22.3 mm (0.9 in)
1965	31.4 mm (1.2 in)
1966	47.1 mm (1.9 in)
1967	27.3 mm (1.1 in)
1968	32.7 mm (1.3 in)
1969	28.9 mm (1.1 in)
1970	22.2 mm (0.9 in)
1971	18.4 mm (0.7 in)
1972	35.1 mm (1.4 in)
1973	34.0 mm (1.3 in)
1974	30.7 mm (1.2 in)
1975	16.7 mm (0.7 in)
1976	30.0 mm (1.2 in)
1977	39.0 mm (1.5 in)
1978	37.6 mm (1.5 in)
1979	30.4 mm (1.2 in)
1980	46.6 mm (1.8 in)
1981	27.5 mm (1.1 in)
1982	18.3 mm (0.7 in)
1983	26.4 mm (1.0 in)
1984	23.3 mm (0.9 in)
1985	20.0 mm (0.8 in)
1986	43.5 mm (1.7 in)
1987	21.8 mm (0.9 in)
1988	24.8 mm (1.0 in)
1989	17.9 mm (0.7 in)
1990	23.3 mm (0.9 in)
1991	29.9 mm (1.2 in)
1992	25.7 mm (1.0 in)
1993	15.6 mm (0.6 in)
1994	38.1 mm (1.5 in)
1995	22.1 mm (0.9 in)
1996	37.3 mm (1.5 in)
1997	33.6 mm (1.3 in)
2006	34.4 mm (1.4 in)
2007	19.6 mm (0.8 in)
2008	29.8 mm (1.2 in)
2009	32.2 mm (1.3 in)
2010	45.7 mm (1.8 in)
2011	26.2 mm (1.0 in)
2012	39.3 mm (1.5 in)
2013	15.0 mm (0.6 in)

Wettest five days (Rx5day)

The wettest five days of the year at Arlanda, 1960 to 2013. The record is 104.6 mm (4.1 in) in 1980, marked on the chart; the median year is 47.1 mm (1.9 in).

Wettest five days (Rx5day) at Arlanda by year
Year	Wettest five days (Rx5day)
1960	43.8 mm (1.7 in)
1961	60.7 mm (2.4 in)
1963	35.4 mm (1.4 in)
1964	41.1 mm (1.6 in)
1965	55.9 mm (2.2 in)
1966	87.0 mm (3.4 in)
1967	38.2 mm (1.5 in)
1968	69.8 mm (2.7 in)
1969	45.2 mm (1.8 in)
1970	36.5 mm (1.4 in)
1971	38.3 mm (1.5 in)
1972	51.5 mm (2.0 in)
1973	57.8 mm (2.3 in)
1974	62.0 mm (2.4 in)
1975	29.5 mm (1.2 in)
1976	53.8 mm (2.1 in)
1977	69.7 mm (2.7 in)
1978	58.3 mm (2.3 in)
1979	46.5 mm (1.8 in)
1980	104.6 mm (4.1 in)
1981	38.2 mm (1.5 in)
1982	41.8 mm (1.6 in)
1983	41.4 mm (1.6 in)
1984	57.2 mm (2.3 in)
1985	52.5 mm (2.1 in)
1986	82.7 mm (3.3 in)
1987	42.6 mm (1.7 in)
1988	44.6 mm (1.8 in)
1989	27.8 mm (1.1 in)
1990	59.0 mm (2.3 in)
1991	47.5 mm (1.9 in)
1992	37.1 mm (1.5 in)
1993	37.4 mm (1.5 in)
1994	42.5 mm (1.7 in)
1995	38.0 mm (1.5 in)
1996	47.1 mm (1.9 in)
1997	73.1 mm (2.9 in)
2006	60.4 mm (2.4 in)
2007	40.9 mm (1.6 in)
2008	75.1 mm (3.0 in)
2009	65.8 mm (2.6 in)
2010	53.3 mm (2.1 in)
2011	41.1 mm (1.6 in)
2012	74.5 mm (2.9 in)
2013	25.3 mm (1.0 in)

Longest dry spell (CDD)

The longest dry spell of the year at Arlanda, 1960 to 2013. The record is 56 days in 1964, marked on the chart; the median year is 23 days.

Longest dry spell (CDD) at Arlanda by year
Year	Longest dry spell (CDD)
1960	27 days
1961	19 days
1963	16 days
1964	56 days
1965	22 days
1966	17 days
1967	14 days
1968	19 days
1969	30 days
1970	23 days
1971	27 days
1972	33 days
1973	23 days
1974	34 days
1975	20 days
1976	24 days
1977	15 days
1978	22 days
1979	34 days
1980	25 days
1981	27 days
1982	18 days
1983	31 days
1984	22 days
1985	28 days
1986	16 days
1987	23 days
1988	24 days
1989	23 days
1990	22 days
1991	16 days
1992	22 days
1993	22 days
1994	30 days
1995	19 days
1996	26 days
1997	25 days
2006	21 days
2007	28 days
2008	29 days
2009	24 days
2010	17 days
2011	26 days
2012	20 days
2013	23 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

41 years with a frost

Across 41 years with a frost, the median last spring frost at Arlanda falls on 12 May and the median first autumn frost on 1 October, which leaves a median of 142 days between them.

Fitted over all years, the growing season changes by +1.6 days per decade at this station.

Frost dates and growing season at Arlanda
Measure	Median, all years	Earliest period	Recent period (1974 to 2012)	Recent against earliest	Fitted trend
Last spring frost	12 May	n/a	9 May	n/a	-1.9 days per decade
First autumn frost	1 October	n/a	2 October	n/a	-0.3 days per decade
Growing days	142 days	n/a	152 days	n/a	+1.6 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

41 years, 1961 to 2012

A day with at least 28.8 mm (1.1 in) of rain is expected about once in 2 years. A day with at least 52.7 mm (2.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Arlanda: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	28.8 mm (1.1 in)
5 years	36.6 mm (1.4 in)
10 years	41.2 mm (1.6 in)
25 years	46.3 mm (1.8 in)
50 years	49.7 mm (2.0 in)	Longer than the 41 years of record
100 years	52.7 mm (2.1 in)	Longer than the 41 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, 41 years of values from 1961 to 2012.

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: 47.1 mm (1.9 in) in 1966; 46.6 mm (1.8 in) in 1980; 45.7 mm (1.8 in) in 2010.

Station Changes

2 suspected

2 changes were suspected in the annual mean temperature of Arlanda, at 1976 and 1993. Each is measured against neighbouring stations.

Relative to 5 neighbouring stations, the station's annual mean temperature from 1976 ran 0.3 C (0.5 F) higher than in the years before (possible change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1993 ran 0.3 C (0.5 F) lower than in the years before (likely change).

Suspected changes in the annual mean temperature at Arlanda, against neighbouring stations
Year	Shift (C)	Shift (F)	Strength	Neighbours
1976	+0.3	+0.5	possible	5
1993	-0.3	-0.5	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.

Download the Data

Data for Arlanda standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Arlanda 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).