Langvattnet Weather Records (SWE00140462)

Record envelope, standing records and threshold days for Langvattnet (SWE00140462), Sweden, with 70 years of record.

Key Facts for Langvattnet

Langvattnet (SWE00140462) is a weather station in Sweden at 65.10 latitude and 16.69 longitude, 420 m (1,378 ft) above sea level.
The station reports from 1930 to 1999, 70 years of record.
1,464 records set at Langvattnet still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Langvattnet set a daily record low minimum temperature of -39.4 C (-38.9 F) on 28 January 1999.

About the Station

Location: Sweden, 65.10 latitude, 16.69 longitude.
Elevation: 420 m (1,378 ft).
Period of record: 1930 to 1999, 70 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 Langvattnet. 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 Langvattnet, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	8.5 C (47.3 F)	-41.0 C (-41.8 F)	n/a	n/a
Feb	8.0 C (46.4 F)	-41.3 C (-42.3 F)	n/a	n/a
Mar	15.0 C (59.0 F)	-37.8 C (-36.0 F)	n/a	n/a
Apr	17.0 C (62.6 F)	-26.0 C (-14.8 F)	n/a	n/a
May	29.9 C (85.8 F)	-18.0 C (-0.4 F)	n/a	n/a
Jun	30.5 C (86.9 F)	-5.0 C (23.0 F)	n/a	n/a
Jul	33.0 C (91.4 F)	-3.0 C (26.6 F)	n/a	n/a
Aug	29.6 C (85.3 F)	-3.0 C (26.6 F)	n/a	n/a
Sep	25.4 C (77.7 F)	-8.0 C (17.6 F)	n/a	n/a
Oct	16.0 C (60.8 F)	-22.7 C (-8.9 F)	n/a	n/a
Nov	11.2 C (52.2 F)	-34.8 C (-30.6 F)	n/a	n/a
Dec	8.0 C (46.4 F)	-44.0 C (-47.2 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Langvattnet still stand. 1966 holds the most, with 44.

Standing records at Langvattnet by the year they were set
Year set	Standing records
1930	28
1931	14
1932	23
1933	31
1934	35
1935	19
1936	13
1937	30
1938	20
1939	15
1940	20
1941	34
1942	36
1943	12
1944	26
1945	41
1946	12
1947	41
1948	32
1949	33
1950	7
1951	35
1952	15
1953	37
1954	8
1955	31
1956	16
1957	34
1958	27
1959	33
1960	17
1961	24
1962	13
1963	11
1964	21
1965	21
1966	44
1967	15
1968	44
1969	18
1970	19
1971	23
1972	21
1973	16
1974	9
1975	20
1976	17
1977	18
1978	26
1979	7
1980	20
1981	25
1982	10
1983	6
1984	19
1985	25
1986	26
1987	22
1988	20
1989	18
1990	16
1991	7
1992	37
1993	15
1994	7
1995	6
1996	4
1997	4
1998	13
1999	2

All-Time Record Progression

1 new records

1 all-time records were set at Langvattnet between 28 July 1976 and 28 July 1976. Each dot is a new record.

Wettest Day of Each Month

Jul: 66.3 mm (2.6 in)

The wettest day on record for each calendar month at Langvattnet. The most was 66.3 mm (2.6 in) on 28 July 1976.

Record daily precipitation for each month at Langvattnet
Month	Record daily precipitation (mm)	Date
Jan	30.5 mm (1.2 in)	1 January 1950
Feb	18.5 mm (0.7 in)	24 February 1935
Mar	24.7 mm (1.0 in)	23 March 1981
Apr	30.0 mm (1.2 in)	8 April 1953
May	33.9 mm (1.3 in)	28 May 1982
Jun	35.8 mm (1.4 in)	11 June 1947
Jul	66.3 mm (2.6 in)	28 July 1976
Aug	46.3 mm (1.8 in)	1 August 1964
Sep	56.2 mm (2.2 in)	18 September 1937
Oct	31.1 mm (1.2 in)	10 October 1935
Nov	21.4 mm (0.8 in)	12 November 1992
Dec	20.7 mm (0.8 in)	18 December 1992

Period of Record Coverage

1930 to 1999

70 years of record at Langvattnet, 1930 to 1999. 3 years have data for under 90 percent of days and are left out of rankings: 1997, 1998, 1999.

Days with data per year at Langvattnet
Year	Days with data	Share of year	Complete
1930	365	100%	Yes
1931	365	100%	Yes
1932	366	100%	Yes
1933	365	100%	Yes
1934	365	100%	Yes
1935	365	100%	Yes
1936	366	100%	Yes
1937	365	100%	Yes
1938	365	100%	Yes
1939	365	100%	Yes
1940	366	100%	Yes
1941	365	100%	Yes
1942	365	100%	Yes
1943	365	100%	Yes
1944	366	100%	Yes
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	364	100%	Yes
1952	336	92%	Yes
1953	365	100%	Yes
1954	365	100%	Yes
1955	335	92%	Yes
1956	366	100%	Yes
1957	364	100%	Yes
1958	365	100%	Yes
1959	365	100%	Yes
1960	366	100%	Yes
1961	365	100%	Yes
1962	365	100%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1965	364	100%	Yes
1966	365	100%	Yes
1967	365	100%	Yes
1968	342	93%	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	364	100%	Yes
1988	335	92%	Yes
1989	365	100%	Yes
1990	365	100%	Yes
1991	365	100%	Yes
1992	344	94%	Yes
1993	356	98%	Yes
1994	336	92%	Yes
1995	365	100%	Yes
1996	332	91%	Yes
1997	315	86%	No
1998	227	62%	No
1999	31	8%	No

Latest Records

Latest records at Langvattnet
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
28 January 1999	Langvattnet, SE	daily low min	-39.4 C (-38.9 F)	3.7 C (6.7 F)	20 years	16 of 100 (Routine)
27 January 1999	Langvattnet, SE	daily low min	-39.9 C (-39.8 F)	2.1 C (3.8 F)	20 years	15 of 100 (Routine)
16 January 1999	Langvattnet, SE	daily rain	10.5 mm (0.4 in)	1.7 mm (0.07 in)	36 years	20 of 100 (Routine)
15 January 1999	Langvattnet, SE	daily rain	13.2 mm (0.5 in)	0.4 mm (0.02 in)	8 years	10 of 100 (Routine)
9 November 1998	Langvattnet, SE	daily low max	-14.0 C (6.8 F)	2.0 C (3.6 F)	52 years	24 of 100 (Routine)
14 September 1998	Langvattnet, SE	daily high min	8.5 C (47.3 F)	0.5 C (0.9 F)	37 years	18 of 100 (Routine)
1 September 1998	Langvattnet, SE	daily rain	31.1 mm (1.2 in)	2.0 mm (0.08 in)	31 years	18 of 100 (Routine)
18 August 1998	Langvattnet, SE	daily rain	34.5 mm (1.4 in)	14.5 mm (0.6 in)	64 years	47 of 100 (Notable)
8 June 1998	Langvattnet, SE	daily rain	19.1 mm (0.8 in)	6.6 mm (0.26 in)	60 years	20 of 100 (Routine)
6 June 1998	Langvattnet, SE	daily low min	-3.2 C (26.2 F)	0.6 C (1.1 F)	52 years	22 of 100 (Routine)
16 May 1998	Langvattnet, SE	daily high max	21.7 C (71.1 F)	0.2 C (0.4 F)	13 years	10 of 100 (Routine)
15 May 1998	Langvattnet, SE	daily high max	20.0 C (68.0 F)	1.0 C (1.8 F)	39 years	18 of 100 (Routine)
5 May 1998	Langvattnet, SE	daily rain	18.0 mm (0.7 in)	0.7 mm (0.03 in)	36 years	18 of 100 (Routine)
26 April 1998	Langvattnet, SE	daily high min	2.6 C (36.7 F)	0.7 C (1.3 F)	15 years	11 of 100 (Routine)
17 April 1998	Langvattnet, SE	daily rain	20.1 mm (0.8 in)	10.8 mm (0.4 in)	28 years	20 of 100 (Routine)
11 April 1998	Langvattnet, SE	daily low min	-23.1 C (-9.6 F)	0.6 C (1.1 F)	32 years	16 of 100 (Routine)
1 April 1998	Langvattnet, SE	daily low max	-6.4 C (20.5 F)	0.9 C (1.6 F)	5 years	9 of 100 (Routine)
30 March 1998	Langvattnet, SE	daily rain	7.8 mm (0.31 in)	1.8 mm (0.07 in)	9 years	14 of 100 (Routine)
4 March 1998	Langvattnet, SE	daily rain	8.8 mm (0.35 in)	1.6 mm (0.06 in)	40 years	20 of 100 (Routine)
25 February 1998	Langvattnet, SE	daily high max	6.0 C (42.8 F)	0.8 C (1.4 F)	15 years	11 of 100 (Routine)

Climate Trend

60 complete years, 1930 to 1995

One stripe for each of 60 complete years at Langvattnet, 1930 to 1995. Blue stripes are years cooler than the station's own mean of 0.2 C (32.4 F); red stripes are warmer. The coolest year was 1985, at -2.4 C (27.7 F), and the warmest was 1938, at 2.5 C (36.5 F). The strongest colour marks a difference of 2.7 C (4.9 F).

Annual mean temperature at Langvattnet as warming stripes, 1930 to 1995
Year	Annual mean temperature	Difference from the station mean
1930	1.8 C	+1.61 C
1931	-0.2 C	-0.45 C
1932	1.2 C	+0.97 C
1933	0.6 C	+0.42 C
1934	2.1 C	+1.91 C
1935	0.5 C	+0.23 C
1936	0.8 C	+0.58 C
1937	1.5 C	+1.26 C
1938	2.5 C	+2.27 C
1939	0.7 C	+0.47 C
1940	-1.3 C	-1.49 C
1941	-1.7 C	-1.96 C
1942	-1.8 C	-2.00 C
1943	1.3 C	+1.03 C
1944	0.8 C	+0.56 C
1945	0.4 C	+0.17 C
1946	0.5 C	+0.30 C
1947	-0.7 C	-0.88 C
1948	0.5 C	+0.30 C
1949	1.4 C	+1.21 C
1950	-0.1 C	-0.37 C
1951	-0.7 C	-0.91 C
1953	2.0 C	+1.73 C
1954	0.3 C	+0.03 C
1956	-1.3 C	-1.50 C
1957	0.4 C	+0.20 C
1958	-0.5 C	-0.74 C
1959	1.7 C	+1.47 C
1960	-0.3 C	-0.50 C
1961	1.3 C	+1.05 C
1962	-0.6 C	-0.84 C
1963	0.1 C	-0.11 C
1964	0.6 C	+0.35 C
1965	-1.0 C	-1.18 C
1966	-2.1 C	-2.30 C
1967	-0.4 C	-0.58 C
1969	-0.5 C	-0.77 C
1970	-0.2 C	-0.46 C
1971	-0.2 C	-0.41 C
1972	1.3 C	+1.05 C
1973	0.5 C	+0.26 C
1974	1.6 C	+1.33 C
1975	1.5 C	+1.29 C
1976	-0.4 C	-0.61 C
1977	-0.3 C	-0.57 C
1978	-1.3 C	-1.55 C
1979	-0.5 C	-0.74 C
1980	-0.7 C	-0.97 C
1981	-1.2 C	-1.40 C
1982	0.6 C	+0.35 C
1983	0.4 C	+0.20 C
1984	0.7 C	+0.43 C
1985	-2.4 C	-2.62 C
1986	-0.5 C	-0.72 C
1987	-1.1 C	-1.33 C
1989	2.1 C	+1.88 C
1990	2.3 C	+2.10 C
1991	1.1 C	+0.87 C
1993	0.2 C	+0.01 C
1995	0.4 C	+0.14 C

The fitted trend in annual mean temperature here over 1930 to 1995 is -0.1 C (-0.3 to 0.1) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.2 F (-0.5 to 0.1) per decade. The slope is a straight line fitted to 60 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Langvattnet
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.1 C (-0.3 to 0.1) per decade	-0.2 F (-0.5 to 0.1) per decade	1930 to 1995	60	Not clearly different from zero
Mean daily maximum	-0.3 C (-0.4 to -0.1) per decade	-0.5 F (-0.8 to -0.2) per decade	1930 to 1995	60	Fall
Mean daily minimum	0.1 C (-0.1 to 0.3) per decade	0.1 F (-0.2 to 0.5) per decade	1930 to 1995	60	Not clearly different from zero

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

1930 to 1999

Yearly extremes at Langvattnet: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	33.0 C (91.4 F)	1933	27.3 C (81.1 F)	70
Coldest night (TNn)	-44.0 C (-47.2 F)	1941	-35.0 C (-31.0 F)	70
Wettest day (Rx1day)	66.3 mm (2.6 in)	1976	28.9 mm (1.1 in)	70
Wettest five days (Rx5day)	110.1 mm (4.3 in)	1976	54.4 mm (2.1 in)	70
Longest dry spell (CDD)	54 days	1941	22 days	70

Hottest day (TXx)

The hottest day of the year at Langvattnet, 1930 to 1999. The record is 33.0 C (91.4 F) in 1933, marked on the chart; the median year is 27.3 C (81.1 F).

Hottest day (TXx) at Langvattnet by year
Year	Hottest day (TXx)
1930	28.0 C (82.4 F)
1931	29.0 C (84.2 F)
1932	29.0 C (84.2 F)
1933	33.0 C (91.4 F)
1934	30.5 C (86.9 F)
1935	29.0 C (84.2 F)
1936	28.0 C (82.4 F)
1937	30.0 C (86.0 F)
1938	27.5 C (81.5 F)
1939	29.5 C (85.1 F)
1940	30.0 C (86.0 F)
1941	30.5 C (86.9 F)
1942	26.5 C (79.7 F)
1943	29.9 C (85.8 F)
1944	29.2 C (84.6 F)
1945	32.1 C (89.8 F)
1946	29.0 C (84.2 F)
1947	31.0 C (87.8 F)
1948	28.0 C (82.4 F)
1949	27.0 C (80.6 F)
1950	27.5 C (81.5 F)
1951	25.0 C (77.0 F)
1952	29.0 C (84.2 F)
1953	30.5 C (86.9 F)
1954	26.0 C (78.8 F)
1955	28.0 C (82.4 F)
1956	27.0 C (80.6 F)
1957	27.0 C (80.6 F)
1958	28.0 C (82.4 F)
1959	26.0 C (78.8 F)
1960	26.0 C (78.8 F)
1961	26.0 C (78.8 F)
1962	20.5 C (68.9 F)
1963	27.0 C (80.6 F)
1964	24.8 C (76.6 F)
1965	23.5 C (74.3 F)
1966	29.5 C (85.1 F)
1967	24.0 C (75.2 F)
1968	30.0 C (86.0 F)
1969	28.0 C (82.4 F)
1970	27.0 C (80.6 F)
1971	29.9 C (85.8 F)
1972	28.0 C (82.4 F)
1973	27.6 C (81.7 F)
1974	27.3 C (81.1 F)
1975	26.6 C (79.9 F)
1976	26.1 C (79.0 F)
1977	25.8 C (78.4 F)
1978	25.6 C (78.1 F)
1979	25.9 C (78.6 F)
1980	28.4 C (83.1 F)
1981	26.5 C (79.7 F)
1982	26.5 C (79.7 F)
1983	27.5 C (81.5 F)
1984	23.0 C (73.4 F)
1985	25.2 C (77.4 F)
1986	27.3 C (81.1 F)
1987	24.2 C (75.6 F)
1988	27.2 C (81.0 F)
1989	26.3 C (79.3 F)
1990	25.6 C (78.1 F)
1991	27.5 C (81.5 F)
1992	25.5 C (77.9 F)
1993	25.1 C (77.2 F)
1994	28.2 C (82.8 F)
1995	26.1 C (79.0 F)
1996	24.2 C (75.6 F)
1997	25.6 C (78.1 F)
1998	21.7 C (71.1 F)
1999	2.6 C (36.7 F)

Coldest night (TNn)

The coldest night of the year at Langvattnet, 1930 to 1999. The record is -44.0 C (-47.2 F) in 1941, marked on the chart; the median year is -35.0 C (-31.0 F).

Coldest night (TNn) at Langvattnet by year
Year	Coldest night (TNn)
1930	-26.0 C (-14.8 F)
1931	-36.0 C (-32.8 F)
1932	-32.0 C (-25.6 F)
1933	-35.0 C (-31.0 F)
1934	-33.0 C (-27.4 F)
1935	-33.0 C (-27.4 F)
1936	-37.5 C (-35.5 F)
1937	-32.0 C (-25.6 F)
1938	-26.5 C (-15.7 F)
1939	-33.0 C (-27.4 F)
1940	-36.0 C (-32.8 F)
1941	-44.0 C (-47.2 F)
1942	-35.5 C (-31.9 F)
1943	-35.5 C (-31.9 F)
1944	-30.0 C (-22.0 F)
1945	-39.0 C (-38.2 F)
1946	-35.0 C (-31.0 F)
1947	-37.5 C (-35.5 F)
1948	-35.0 C (-31.0 F)
1949	-37.0 C (-34.6 F)
1950	-35.0 C (-31.0 F)
1951	-37.0 C (-34.6 F)
1952	-35.0 C (-31.0 F)
1953	-37.0 C (-34.6 F)
1954	-32.0 C (-25.6 F)
1955	-36.0 C (-32.8 F)
1956	-41.0 C (-41.8 F)
1957	-33.0 C (-27.4 F)
1958	-36.5 C (-33.7 F)
1959	-35.0 C (-31.0 F)
1960	-35.0 C (-31.0 F)
1961	-31.0 C (-23.8 F)
1962	-33.0 C (-27.4 F)
1963	-34.0 C (-29.2 F)
1964	-35.0 C (-31.0 F)
1965	-39.0 C (-38.2 F)
1966	-40.0 C (-40.0 F)
1967	-40.0 C (-40.0 F)
1968	-37.0 C (-34.6 F)
1969	-35.9 C (-32.6 F)
1970	-34.0 C (-29.2 F)
1971	-37.8 C (-36.0 F)
1972	-33.4 C (-28.1 F)
1973	-34.1 C (-29.4 F)
1974	-30.0 C (-22.0 F)
1975	-31.6 C (-24.9 F)
1976	-35.8 C (-32.4 F)
1977	-36.5 C (-33.7 F)
1978	-42.3 C (-44.1 F)
1979	-37.8 C (-36.0 F)
1980	-39.7 C (-39.5 F)
1981	-38.8 C (-37.8 F)
1982	-36.0 C (-32.8 F)
1983	-34.3 C (-29.7 F)
1984	-36.8 C (-34.2 F)
1985	-40.1 C (-40.2 F)
1986	-37.2 C (-35.0 F)
1987	-38.9 C (-38.0 F)
1988	-30.2 C (-22.4 F)
1989	-35.6 C (-32.1 F)
1990	-31.2 C (-24.2 F)
1991	-30.6 C (-23.1 F)
1992	-26.0 C (-14.8 F)
1993	-34.3 C (-29.7 F)
1994	-35.0 C (-31.0 F)
1995	-31.2 C (-24.2 F)
1996	-32.9 C (-27.2 F)
1997	-31.1 C (-24.0 F)
1998	-36.1 C (-33.0 F)
1999	-39.9 C (-39.8 F)

Wettest day (Rx1day)

The wettest day of the year at Langvattnet, 1930 to 1999. The record is 66.3 mm (2.6 in) in 1976, marked on the chart; the median year is 28.9 mm (1.1 in).

Wettest day (Rx1day) at Langvattnet by year
Year	Wettest day (Rx1day)
1930	30.0 mm (1.2 in)
1931	43.8 mm (1.7 in)
1932	40.0 mm (1.6 in)
1933	20.0 mm (0.8 in)
1934	57.1 mm (2.2 in)
1935	34.5 mm (1.4 in)
1936	28.1 mm (1.1 in)
1937	56.2 mm (2.2 in)
1938	30.8 mm (1.2 in)
1939	26.6 mm (1.0 in)
1940	24.0 mm (0.9 in)
1941	58.2 mm (2.3 in)
1942	22.3 mm (0.9 in)
1943	31.0 mm (1.2 in)
1944	22.4 mm (0.9 in)
1945	30.9 mm (1.2 in)
1946	22.9 mm (0.9 in)
1947	35.8 mm (1.4 in)
1948	28.6 mm (1.1 in)
1949	25.0 mm (1.0 in)
1950	30.5 mm (1.2 in)
1951	34.4 mm (1.4 in)
1952	17.0 mm (0.7 in)
1953	30.0 mm (1.2 in)
1954	38.2 mm (1.5 in)
1955	20.6 mm (0.8 in)
1956	29.2 mm (1.1 in)
1957	39.2 mm (1.5 in)
1958	17.2 mm (0.7 in)
1959	17.5 mm (0.7 in)
1960	41.5 mm (1.6 in)
1961	38.1 mm (1.5 in)
1962	37.5 mm (1.5 in)
1963	26.2 mm (1.0 in)
1964	46.3 mm (1.8 in)
1965	20.9 mm (0.8 in)
1966	26.8 mm (1.1 in)
1967	29.1 mm (1.1 in)
1968	28.1 mm (1.1 in)
1969	14.6 mm (0.6 in)
1970	27.2 mm (1.1 in)
1971	20.9 mm (0.8 in)
1972	27.9 mm (1.1 in)
1973	54.9 mm (2.2 in)
1974	14.5 mm (0.6 in)
1975	44.4 mm (1.7 in)
1976	66.3 mm (2.6 in)
1977	30.3 mm (1.2 in)
1978	25.0 mm (1.0 in)
1979	29.8 mm (1.2 in)
1980	24.6 mm (1.0 in)
1981	43.5 mm (1.7 in)
1982	33.9 mm (1.3 in)
1983	25.4 mm (1.0 in)
1984	28.4 mm (1.1 in)
1985	32.8 mm (1.3 in)
1986	19.4 mm (0.8 in)
1987	27.5 mm (1.1 in)
1988	25.7 mm (1.0 in)
1989	28.3 mm (1.1 in)
1990	29.7 mm (1.2 in)
1991	20.0 mm (0.8 in)
1992	21.4 mm (0.8 in)
1993	36.2 mm (1.4 in)
1994	30.0 mm (1.2 in)
1995	25.0 mm (1.0 in)
1996	41.2 mm (1.6 in)
1997	25.0 mm (1.0 in)
1998	34.5 mm (1.4 in)
1999	13.2 mm (0.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Langvattnet, 1930 to 1999. The record is 110.1 mm (4.3 in) in 1976, marked on the chart; the median year is 54.4 mm (2.1 in).

Wettest five days (Rx5day) at Langvattnet by year
Year	Wettest five days (Rx5day)
1930	52.6 mm (2.1 in)
1931	70.7 mm (2.8 in)
1932	66.1 mm (2.6 in)
1933	47.7 mm (1.9 in)
1934	74.2 mm (2.9 in)
1935	50.7 mm (2.0 in)
1936	55.0 mm (2.2 in)
1937	98.4 mm (3.9 in)
1938	70.8 mm (2.8 in)
1939	39.0 mm (1.5 in)
1940	41.7 mm (1.6 in)
1941	63.3 mm (2.5 in)
1942	42.6 mm (1.7 in)
1943	36.9 mm (1.5 in)
1944	57.0 mm (2.2 in)
1945	48.2 mm (1.9 in)
1946	47.0 mm (1.9 in)
1947	58.9 mm (2.3 in)
1948	40.3 mm (1.6 in)
1949	40.7 mm (1.6 in)
1950	59.7 mm (2.4 in)
1951	53.2 mm (2.1 in)
1952	46.7 mm (1.8 in)
1953	46.7 mm (1.8 in)
1954	74.6 mm (2.9 in)
1955	34.3 mm (1.4 in)
1956	41.0 mm (1.6 in)
1957	96.0 mm (3.8 in)
1958	42.6 mm (1.7 in)
1959	36.8 mm (1.4 in)
1960	68.5 mm (2.7 in)
1961	87.2 mm (3.4 in)
1962	61.0 mm (2.4 in)
1963	37.7 mm (1.5 in)
1964	90.3 mm (3.6 in)
1965	53.8 mm (2.1 in)
1966	66.3 mm (2.6 in)
1967	55.7 mm (2.2 in)
1968	39.3 mm (1.5 in)
1969	37.1 mm (1.5 in)
1970	65.9 mm (2.6 in)
1971	30.2 mm (1.2 in)
1972	68.0 mm (2.7 in)
1973	88.0 mm (3.5 in)
1974	38.4 mm (1.5 in)
1975	67.7 mm (2.7 in)
1976	110.1 mm (4.3 in)
1977	68.9 mm (2.7 in)
1978	65.5 mm (2.6 in)
1979	70.5 mm (2.8 in)
1980	45.9 mm (1.8 in)
1981	58.9 mm (2.3 in)
1982	38.5 mm (1.5 in)
1983	63.0 mm (2.5 in)
1984	44.3 mm (1.7 in)
1985	63.3 mm (2.5 in)
1986	46.5 mm (1.8 in)
1987	69.6 mm (2.7 in)
1988	52.8 mm (2.1 in)
1989	47.4 mm (1.9 in)
1990	49.7 mm (2.0 in)
1991	51.7 mm (2.0 in)
1992	58.6 mm (2.3 in)
1993	78.6 mm (3.1 in)
1994	58.8 mm (2.3 in)
1995	43.9 mm (1.7 in)
1996	62.8 mm (2.5 in)
1997	48.7 mm (1.9 in)
1998	93.3 mm (3.7 in)
1999	25.2 mm (1.0 in)

Longest dry spell (CDD)

The longest dry spell of the year at Langvattnet, 1930 to 1999. The record is 54 days in 1941, marked on the chart; the median year is 22 days.

Longest dry spell (CDD) at Langvattnet by year
Year	Longest dry spell (CDD)
1930	23 days
1931	22 days
1932	22 days
1933	27 days
1934	26 days
1935	17 days
1936	36 days
1937	24 days
1938	21 days
1939	26 days
1940	20 days
1941	54 days
1942	28 days
1943	19 days
1944	31 days
1945	25 days
1946	19 days
1947	26 days
1948	30 days
1949	36 days
1950	16 days
1951	44 days
1952	20 days
1953	21 days
1954	16 days
1955	22 days
1956	28 days
1957	29 days
1958	28 days
1959	26 days
1960	28 days
1961	25 days
1962	21 days
1963	19 days
1964	23 days
1965	26 days
1966	15 days
1967	19 days
1968	48 days
1969	22 days
1970	14 days
1971	14 days
1972	19 days
1973	17 days
1974	32 days
1975	23 days
1976	22 days
1977	18 days
1978	20 days
1979	16 days
1980	18 days
1981	28 days
1982	19 days
1983	22 days
1984	16 days
1985	18 days
1986	24 days
1987	30 days
1988	18 days
1989	15 days
1990	13 days
1991	34 days
1992	34 days
1993	16 days
1994	23 days
1995	13 days
1996	28 days
1997	22 days
1998	17 days
1999	9 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

60 years with a frost

Across 60 years with a frost, the median last spring frost at Langvattnet falls on 11 June and the median first autumn frost on 31 August, which leaves a median of 84 days between them.

In 1962 to 1995 the median growing season was 88 days. That is 11 days more than in 1930 to 1961.

Fitted over all years, the growing season changes by +2.5 days per decade at this station.

Frost dates and growing season at Langvattnet
Measure	Median, all years	Earliest period (1930 to 1961)	Recent period (1962 to 1995)	Recent against earliest	Fitted trend
Last spring frost	11 June	13 June	7 June	6 days earlier	-1.8 days per decade
First autumn frost	31 August	31 August	31 August	no change	+0.7 days per decade
Growing days	84 days	77 days	88 days	11 days more	+2.5 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

68 years, 1930 to 1997

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 68.5 mm (2.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Langvattnet: 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	38.2 mm (1.5 in)
10 years	44.9 mm (1.8 in)
25 years	53.9 mm (2.1 in)
50 years	61.0 mm (2.4 in)
100 years	68.5 mm (2.7 in)	Longer than the 68 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, 68 years of values from 1930 to 1997.

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: 66.3 mm (2.6 in) in 1976; 58.2 mm (2.3 in) in 1941; 57.1 mm (2.2 in) in 1934.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Download the Data

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