Siljansfors Weather Records (SWE00139490)

Record envelope, standing records and threshold days for Siljansfors (SWE00139490), Sweden, with 71 years of record.

Key Facts for Siljansfors

Siljansfors (SWE00139490) is a weather station in Sweden at 60.88 latitude and 14.38 longitude, 260 m (853 ft) above sea level.
The station reports from 1921 to 1991, 71 years of record.
1,464 records set at Siljansfors still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Siljansfors set a daily record precipitation of 34.4 mm (1.4 in) on 30 September 1991.

About the Station

Location: Sweden, 60.88 latitude, 14.38 longitude.
Elevation: 260 m (853 ft).
Period of record: 1921 to 1991, 71 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 Siljansfors. 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 Siljansfors, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	8.2 C (46.8 F)	-40.6 C (-41.1 F)	n/a	n/a
Feb	10.8 C (51.4 F)	-35.7 C (-32.3 F)	n/a	n/a
Mar	15.5 C (59.9 F)	-33.3 C (-27.9 F)	n/a	n/a
Apr	21.5 C (70.7 F)	-23.2 C (-9.8 F)	n/a	n/a
May	27.0 C (80.6 F)	-10.4 C (13.3 F)	n/a	n/a
Jun	32.5 C (90.5 F)	-4.6 C (23.7 F)	n/a	n/a
Jul	31.4 C (88.5 F)	-2.0 C (28.4 F)	n/a	n/a
Aug	33.5 C (92.3 F)	-3.0 C (26.6 F)	n/a	n/a
Sep	27.5 C (81.5 F)	-8.3 C (17.1 F)	n/a	n/a
Oct	21.5 C (70.7 F)	-20.0 C (-4.0 F)	n/a	n/a
Nov	11.7 C (53.1 F)	-28.4 C (-19.1 F)	n/a	n/a
Dec	9.0 C (48.2 F)	-35.2 C (-31.4 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Siljansfors still stand. 1968 holds the most, with 61.

Standing records at Siljansfors by the year they were set
Year set	Standing records
1941	18
1942	17
1943	16
1944	11
1945	12
1946	12
1947	20
1948	22
1949	24
1950	13
1951	17
1952	24
1953	14
1954	8
1955	13
1956	17
1957	35
1958	31
1959	37
1960	19
1961	37
1962	31
1963	18
1964	22
1965	38
1966	45
1967	28
1968	61
1969	38
1970	31
1971	35
1972	40
1973	40
1974	18
1975	35
1976	40
1977	37
1978	54
1979	24
1980	22
1981	33
1982	36
1983	30
1984	21
1985	43
1986	44
1987	47
1988	23
1989	47
1990	54
1991	12

All-Time Record Progression

2 new records

2 all-time records were set at Siljansfors between 10 January 1987 and 10 January 1987. Each dot is a new record.

When Siljansfors set new all-time records
Date	Kind	Detail
1987-01-10	Record low maximum temperature	Record low maximum temperature -29.3 C (-20.7 F)
1987-01-10	Record low minimum temperature	Record low minimum temperature -40.6 C (-41.1 F)

Wettest Day of Each Month

Jul: 84.7 mm (3.3 in)

The wettest day on record for each calendar month at Siljansfors. The most was 84.7 mm (3.3 in) on 23 July 1939.

Record daily precipitation for each month at Siljansfors
Month	Record daily precipitation (mm)	Date
Jan	35.5 mm (1.4 in)	2 January 1936
Feb	32.2 mm (1.3 in)	11 February 1962
Mar	27.5 mm (1.1 in)	4 March 1940
Apr	32.2 mm (1.3 in)	2 April 1990
May	39.0 mm (1.5 in)	4 May 1945
Jun	66.5 mm (2.6 in)	30 June 1960
Jul	84.7 mm (3.3 in)	23 July 1939
Aug	50.0 mm (2.0 in)	18 August 1948
Sep	68.0 mm (2.7 in)	1 September 1946
Oct	69.3 mm (2.7 in)	14 October 1964
Nov	52.5 mm (2.1 in)	23 November 1950
Dec	36.0 mm (1.4 in)	10 December 1966

Period of Record Coverage

1941 to 1991

37 years of record at Siljansfors, 1941 to 1991. 3 years have data for under 90 percent of days and are left out of rankings: 1941, 1956, 1991.

Days with data per year at Siljansfors
Year	Days with data	Share of year	Complete
1941	15	4%	No
1956	153	42%	No
1957	365	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	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	174	48%	No

Latest Records

Latest records at Siljansfors
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 September 1991	Siljansfors, SE	daily rain	34.4 mm (1.4 in)	20.6 mm (0.8 in)	25 years	39 of 100 (Notable)
29 June 1991	Siljansfors, SE	daily low max	14.7 C (58.5 F)	0.2 C (0.4 F)	13 years	9 of 100 (Routine)
18 June 1991	Siljansfors, SE	daily rain	36.5 mm (1.4 in)	16.5 mm (0.6 in)	32 years	38 of 100 (Notable)
10 June 1991	Siljansfors, SE	daily rain	27.2 mm (1.1 in)	8.8 mm (0.35 in)	46 years	33 of 100 (Routine)
7 June 1991	Siljansfors, SE	daily low min	-0.5 C (31.1 F)	0.3 C (0.5 F)	8 years	7 of 100 (Routine)
15 May 1991	Siljansfors, SE	daily low max	6.5 C (43.7 F)	0.5 C (0.9 F)	12 years	9 of 100 (Routine)
14 May 1991	Siljansfors, SE	daily rain	10.3 mm (0.4 in)	2.2 mm (0.09 in)	22 years	17 of 100 (Routine)
11 April 1991	Siljansfors, SE	daily high max (Tie)	15.0 C (59.0 F)	tie	9 years	1 of 100 (Routine)
8 April 1991	Siljansfors, SE	daily high min	2.2 C (36.0 F)	0.2 C (0.4 F)	48 years	19 of 100 (Routine)
7 April 1991	Siljansfors, SE	daily high min	2.5 C (36.5 F)	0.2 C (0.4 F)	12 years	8 of 100 (Routine)
6 April 1991	Siljansfors, SE	daily high min	3.1 C (37.6 F)	2.1 C (3.8 F)	48 years	23 of 100 (Routine)
5 April 1991	Siljansfors, SE	daily rain	12.5 mm (0.5 in)	2.7 mm (0.11 in)	18 years	17 of 100 (Routine)
3 April 1991	Siljansfors, SE	daily high min	4.7 C (40.5 F)	0.7 C (1.3 F)	44 years	19 of 100 (Routine)
2 April 1991	Siljansfors, SE	daily high min	4.4 C (39.9 F)	1.4 C (2.5 F)	42 years	20 of 100 (Routine)
21 March 1991	Siljansfors, SE	daily high min (Tie)	0.4 C (32.7 F)	tie	24 years	3 of 100 (Routine)
13 March 1991	Siljansfors, SE	daily rain	12.2 mm (0.5 in)	0.8 mm (0.03 in)	56 years	20 of 100 (Routine)
12 March 1991	Siljansfors, SE	daily high max	9.4 C (48.9 F)	0.4 C (0.7 F)	33 years	15 of 100 (Routine)
24 February 1991	Siljansfors, SE	daily high min	2.0 C (35.6 F)	1.8 C (3.2 F)	0 years	7 of 100 (Routine)
26 January 1991	Siljansfors, SE	daily high max	6.0 C (42.8 F)	1.9 C (3.4 F)	8 years	9 of 100 (Routine)
25 January 1991	Siljansfors, SE	daily high max	5.1 C (41.2 F)	0.1 C (0.2 F)	1 year	5 of 100 (Routine)

Climate Trend

33 complete years, 1957 to 1990

One stripe for each of 33 complete years at Siljansfors, 1957 to 1990. 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 1.0 C (33.9 F), and the warmest was 1990, at 5.3 C (41.5 F). The strongest colour marks a difference of 2.3 C (4.1 F).

Annual mean temperature at Siljansfors as warming stripes, 1957 to 1990
Year	Annual mean temperature	Difference from the station mean
1957	3.5 C	+0.50 C
1958	2.4 C	-0.60 C
1959	4.3 C	+1.27 C
1960	3.1 C	+0.07 C
1961	3.9 C	+0.91 C
1962	1.8 C	-1.15 C
1963	2.3 C	-0.72 C
1964	3.3 C	+0.34 C
1965	2.1 C	-0.92 C
1966	1.6 C	-1.42 C
1967	3.2 C	+0.17 C
1968	2.0 C	-0.95 C
1969	2.2 C	-0.78 C
1970	2.0 C	-0.99 C
1971	3.6 C	+0.59 C
1972	4.2 C	+1.24 C
1973	3.7 C	+0.69 C
1974	4.4 C	+1.37 C
1975	4.8 C	+1.84 C
1976	2.6 C	-0.38 C
1977	2.7 C	-0.24 C
1978	2.2 C	-0.83 C
1979	2.1 C	-0.88 C
1980	2.3 C	-0.71 C
1981	2.4 C	-0.60 C
1982	3.6 C	+0.66 C
1983	4.2 C	+1.25 C
1984	3.7 C	+0.72 C
1985	1.0 C	-1.95 C
1986	2.6 C	-0.39 C
1987	1.8 C	-1.20 C
1988	3.9 C	+0.95 C
1990	5.3 C	+2.28 C

The fitted trend in annual mean temperature here over 1957 to 1990 is 0.1 C (-0.3 to 0.5) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.2 F (-0.5 to 0.9) per decade. The slope is a straight line fitted to 33 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Siljansfors
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.1 C (-0.3 to 0.5) per decade	0.2 F (-0.5 to 0.9) per decade	1957 to 1990	33	Not clearly different from zero
Mean daily maximum	0.01 C (-0.36 to 0.37) per decade	0.01 F (-0.65 to 0.67) per decade	1957 to 1990	33	Not clearly different from zero
Mean daily minimum	0.2 C (-0.2 to 0.6) per decade	0.4 F (-0.4 to 1.1) per decade	1957 to 1990	33	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

1921 to 1991

Yearly extremes at Siljansfors: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	33.5 C (92.3 F)	1975	28.9 C (84.0 F)	37
Coldest night (TNn)	-40.6 C (-41.1 F)	1987	-30.2 C (-22.4 F)	51
Wettest day (Rx1day)	84.7 mm (3.3 in)	1939	37.7 mm (1.5 in)	71
Wettest five days (Rx5day)	141.9 mm (5.6 in)	1981	65.2 mm (2.6 in)	71
Longest dry spell (CDD)	44 days	1933	21 days	71

Hottest day (TXx)

The hottest day of the year at Siljansfors, 1921 to 1991. The record is 33.5 C (92.3 F) in 1975, marked on the chart; the median year is 28.9 C (84.0 F).

Hottest day (TXx) at Siljansfors by year
Year	Hottest day (TXx)
1921	n/a
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
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	-11.0 C (12.2 F)
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	22.5 C (72.5 F)
1957	26.3 C (79.3 F)
1958	30.0 C (86.0 F)
1959	29.1 C (84.4 F)
1960	28.6 C (83.5 F)
1961	27.6 C (81.7 F)
1962	24.6 C (76.3 F)
1963	28.4 C (83.1 F)
1964	27.3 C (81.1 F)
1965	27.9 C (82.2 F)
1966	28.9 C (84.0 F)
1967	29.5 C (85.1 F)
1968	31.0 C (87.8 F)
1969	29.7 C (85.5 F)
1970	32.5 C (90.5 F)
1971	28.7 C (83.7 F)
1972	29.5 C (85.1 F)
1973	29.5 C (85.1 F)
1974	26.9 C (80.4 F)
1975	33.5 C (92.3 F)
1976	29.5 C (85.1 F)
1977	30.3 C (86.5 F)
1978	28.5 C (83.3 F)
1979	29.4 C (84.9 F)
1980	28.0 C (82.4 F)
1981	27.3 C (81.1 F)
1982	32.5 C (90.5 F)
1983	31.4 C (88.5 F)
1984	28.0 C (82.4 F)
1985	27.0 C (80.6 F)
1986	31.0 C (87.8 F)
1987	29.3 C (84.7 F)
1988	30.3 C (86.5 F)
1989	29.9 C (85.8 F)
1990	28.7 C (83.7 F)
1991	21.8 C (71.2 F)

Coldest night (TNn)

The coldest night of the year at Siljansfors, 1921 to 1991. The record is -40.6 C (-41.1 F) in 1987, marked on the chart; the median year is -30.2 C (-22.4 F).

Coldest night (TNn) at Siljansfors by year
Year	Coldest night (TNn)
1921	n/a
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
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	-30.0 C (-22.0 F)
1942	-30.2 C (-22.4 F)
1943	-25.0 C (-13.0 F)
1944	-28.0 C (-18.4 F)
1945	-29.0 C (-20.2 F)
1946	-31.0 C (-23.8 F)
1947	-32.4 C (-26.3 F)
1948	-33.0 C (-27.4 F)
1949	-21.9 C (-7.4 F)
1950	-35.0 C (-31.0 F)
1951	-32.0 C (-25.6 F)
1952	-28.0 C (-18.4 F)
1953	-30.0 C (-22.0 F)
1954	-31.0 C (-23.8 F)
1955	-32.0 C (-25.6 F)
1956	-36.4 C (-33.5 F)
1957	-26.5 C (-15.7 F)
1958	-32.0 C (-25.6 F)
1959	-26.6 C (-15.9 F)
1960	-33.2 C (-27.8 F)
1961	-27.4 C (-17.3 F)
1962	-32.2 C (-26.0 F)
1963	-30.0 C (-22.0 F)
1964	-27.6 C (-17.7 F)
1965	-32.1 C (-25.8 F)
1966	-35.7 C (-32.3 F)
1967	-33.7 C (-28.7 F)
1968	-30.2 C (-22.4 F)
1969	-33.3 C (-27.9 F)
1970	-32.8 C (-27.0 F)
1971	-27.4 C (-17.3 F)
1972	-24.4 C (-11.9 F)
1973	-27.7 C (-17.9 F)
1974	-24.0 C (-11.2 F)
1975	-26.4 C (-15.5 F)
1976	-30.1 C (-22.2 F)
1977	-27.5 C (-17.5 F)
1978	-35.2 C (-31.4 F)
1979	-36.3 C (-33.3 F)
1980	-31.8 C (-25.2 F)
1981	-30.8 C (-23.4 F)
1982	-33.7 C (-28.7 F)
1983	-24.2 C (-11.6 F)
1984	-29.6 C (-21.3 F)
1985	-34.7 C (-30.5 F)
1986	-33.0 C (-27.4 F)
1987	-40.6 C (-41.1 F)
1988	-26.3 C (-15.3 F)
1989	-29.7 C (-21.5 F)
1990	-20.8 C (-5.4 F)
1991	-27.5 C (-17.5 F)

Wettest day (Rx1day)

The wettest day of the year at Siljansfors, 1921 to 1991. The record is 84.7 mm (3.3 in) in 1939, marked on the chart; the median year is 37.7 mm (1.5 in).

Wettest day (Rx1day) at Siljansfors by year
Year	Wettest day (Rx1day)
1921	9.5 mm (0.37 in)
1922	23.0 mm (0.9 in)
1923	29.8 mm (1.2 in)
1924	41.9 mm (1.6 in)
1925	28.5 mm (1.1 in)
1926	45.8 mm (1.8 in)
1927	48.6 mm (1.9 in)
1928	39.5 mm (1.6 in)
1929	34.2 mm (1.3 in)
1930	36.8 mm (1.4 in)
1931	41.1 mm (1.6 in)
1932	48.4 mm (1.9 in)
1933	24.3 mm (1.0 in)
1934	34.2 mm (1.3 in)
1935	64.5 mm (2.5 in)
1936	43.6 mm (1.7 in)
1937	27.3 mm (1.1 in)
1938	37.1 mm (1.5 in)
1939	84.7 mm (3.3 in)
1940	37.7 mm (1.5 in)
1941	33.0 mm (1.3 in)
1942	52.0 mm (2.0 in)
1943	33.0 mm (1.3 in)
1944	60.1 mm (2.4 in)
1945	39.0 mm (1.5 in)
1946	68.0 mm (2.7 in)
1947	42.5 mm (1.7 in)
1948	50.0 mm (2.0 in)
1949	60.0 mm (2.4 in)
1950	55.0 mm (2.2 in)
1951	28.0 mm (1.1 in)
1952	27.2 mm (1.1 in)
1953	66.0 mm (2.6 in)
1954	37.0 mm (1.5 in)
1955	31.8 mm (1.3 in)
1956	51.0 mm (2.0 in)
1957	29.5 mm (1.2 in)
1958	45.0 mm (1.8 in)
1959	30.0 mm (1.2 in)
1960	66.5 mm (2.6 in)
1961	22.5 mm (0.9 in)
1962	32.2 mm (1.3 in)
1963	32.4 mm (1.3 in)
1964	69.3 mm (2.7 in)
1965	43.0 mm (1.7 in)
1966	36.0 mm (1.4 in)
1967	39.5 mm (1.6 in)
1968	36.9 mm (1.5 in)
1969	29.7 mm (1.2 in)
1970	25.0 mm (1.0 in)
1971	25.6 mm (1.0 in)
1972	24.8 mm (1.0 in)
1973	41.2 mm (1.6 in)
1974	19.5 mm (0.8 in)
1975	40.1 mm (1.6 in)
1976	37.9 mm (1.5 in)
1977	32.0 mm (1.3 in)
1978	25.5 mm (1.0 in)
1979	48.5 mm (1.9 in)
1980	55.2 mm (2.2 in)
1981	50.4 mm (2.0 in)
1982	40.7 mm (1.6 in)
1983	27.4 mm (1.1 in)
1984	44.8 mm (1.8 in)
1985	54.5 mm (2.1 in)
1986	49.4 mm (1.9 in)
1987	38.5 mm (1.5 in)
1988	23.3 mm (0.9 in)
1989	30.1 mm (1.2 in)
1990	37.1 mm (1.5 in)
1991	36.5 mm (1.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at Siljansfors, 1921 to 1991. The record is 141.9 mm (5.6 in) in 1981, marked on the chart; the median year is 65.2 mm (2.6 in).

Wettest five days (Rx5day) at Siljansfors by year
Year	Wettest five days (Rx5day)
1921	21.7 mm (0.9 in)
1922	50.0 mm (2.0 in)
1923	45.6 mm (1.8 in)
1924	127.0 mm (5.0 in)
1925	43.3 mm (1.7 in)
1926	80.6 mm (3.2 in)
1927	110.4 mm (4.3 in)
1928	61.3 mm (2.4 in)
1929	51.3 mm (2.0 in)
1930	83.3 mm (3.3 in)
1931	60.3 mm (2.4 in)
1932	58.0 mm (2.3 in)
1933	47.1 mm (1.9 in)
1934	99.2 mm (3.9 in)
1935	78.7 mm (3.1 in)
1936	70.3 mm (2.8 in)
1937	51.3 mm (2.0 in)
1938	60.9 mm (2.4 in)
1939	105.8 mm (4.2 in)
1940	64.7 mm (2.5 in)
1941	78.5 mm (3.1 in)
1942	95.3 mm (3.8 in)
1943	61.6 mm (2.4 in)
1944	121.5 mm (4.8 in)
1945	49.0 mm (1.9 in)
1946	101.0 mm (4.0 in)
1947	67.5 mm (2.7 in)
1948	58.1 mm (2.3 in)
1949	99.0 mm (3.9 in)
1950	93.2 mm (3.7 in)
1951	77.0 mm (3.0 in)
1952	59.7 mm (2.4 in)
1953	90.3 mm (3.6 in)
1954	61.5 mm (2.4 in)
1955	54.4 mm (2.1 in)
1956	69.0 mm (2.7 in)
1957	65.2 mm (2.6 in)
1958	65.7 mm (2.6 in)
1959	49.8 mm (2.0 in)
1960	75.5 mm (3.0 in)
1961	48.1 mm (1.9 in)
1962	57.9 mm (2.3 in)
1963	57.0 mm (2.2 in)
1964	89.3 mm (3.5 in)
1965	95.8 mm (3.8 in)
1966	70.7 mm (2.8 in)
1967	79.2 mm (3.1 in)
1968	82.0 mm (3.2 in)
1969	75.0 mm (3.0 in)
1970	66.1 mm (2.6 in)
1971	33.1 mm (1.3 in)
1972	37.3 mm (1.5 in)
1973	81.0 mm (3.2 in)
1974	45.5 mm (1.8 in)
1975	52.6 mm (2.1 in)
1976	63.6 mm (2.5 in)
1977	56.9 mm (2.2 in)
1978	39.8 mm (1.6 in)
1979	57.7 mm (2.3 in)
1980	73.3 mm (2.9 in)
1981	141.9 mm (5.6 in)
1982	57.3 mm (2.3 in)
1983	61.1 mm (2.4 in)
1984	121.0 mm (4.8 in)
1985	134.0 mm (5.3 in)
1986	77.6 mm (3.1 in)
1987	66.8 mm (2.6 in)
1988	39.7 mm (1.6 in)
1989	64.6 mm (2.5 in)
1990	88.4 mm (3.5 in)
1991	62.0 mm (2.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Siljansfors, 1921 to 1991. The record is 44 days in 1933, marked on the chart; the median year is 21 days.

Longest dry spell (CDD) at Siljansfors by year
Year	Longest dry spell (CDD)
1921	8 days
1922	21 days
1923	29 days
1924	25 days
1925	19 days
1926	28 days
1927	18 days
1928	33 days
1929	20 days
1930	21 days
1931	30 days
1932	30 days
1933	44 days
1934	18 days
1935	23 days
1936	33 days
1937	19 days
1938	19 days
1939	27 days
1940	23 days
1941	39 days
1942	24 days
1943	21 days
1944	16 days
1945	16 days
1946	19 days
1947	43 days
1948	28 days
1949	18 days
1950	19 days
1951	34 days
1952	19 days
1953	34 days
1954	18 days
1955	28 days
1956	15 days
1957	14 days
1958	16 days
1959	25 days
1960	40 days
1961	18 days
1962	19 days
1963	21 days
1964	40 days
1965	17 days
1966	18 days
1967	16 days
1968	28 days
1969	24 days
1970	14 days
1971	16 days
1972	21 days
1973	18 days
1974	42 days
1975	22 days
1976	23 days
1977	20 days
1978	19 days
1979	18 days
1980	21 days
1981	35 days
1982	20 days
1983	23 days
1984	17 days
1985	16 days
1986	31 days
1987	32 days
1988	17 days
1989	24 days
1990	23 days
1991	27 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

33 years with a frost

Across 33 years with a frost, the median last spring frost at Siljansfors falls on 5 June and the median first autumn frost on 24 August, which leaves a median of 76 days between them.

Fitted over all years, the growing season changes by +10.4 days per decade at this station.

Frost dates and growing season at Siljansfors
Measure	Median, all years	Earliest period	Recent period (1960 to 1990)	Recent against earliest	Fitted trend
Last spring frost	5 June	n/a	4 June	n/a	-5.2 days per decade
First autumn frost	24 August	n/a	25 August	n/a	+5.2 days per decade
Growing days	76 days	n/a	78 days	n/a	+10.4 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, 1922 to 1990

A day with at least 38.2 mm (1.5 in) of rain is expected about once in 2 years. A day with at least 84.4 mm (3.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Siljansfors: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	38.2 mm (1.5 in)
5 years	50.4 mm (2.0 in)
10 years	58.5 mm (2.3 in)
25 years	68.8 mm (2.7 in)
50 years	76.6 mm (3.0 in)
100 years	84.4 mm (3.3 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 1922 to 1990.

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: 84.7 mm (3.3 in) in 1939; 69.3 mm (2.7 in) in 1964; 68.0 mm (2.7 in) in 1946.

Download the Data

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