Hassleby Weather Records (SWE00138162)

Record envelope, standing records and threshold days for Hassleby (SWE00138162), Sweden, with 108 years of record.

Key Facts for Hassleby

Hassleby (SWE00138162) is a weather station in Sweden at 57.63 latitude and 15.57 longitude, 140 m (459 ft) above sea level.
The station reports from 1919 to 2026, 108 years of record.
1,464 records set at Hassleby still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Hassleby set a daily record precipitation of 21.8 mm (0.9 in) on 20 June 2026.

About the Station

Location: Sweden, 57.63 latitude, 15.57 longitude.
Elevation: 140 m (459 ft).
Period of record: 1919 to 2026, 108 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 Hassleby. 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 Hassleby, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	9.2 C (48.6 F)	-27.5 C (-17.5 F)	n/a	n/a
Feb	13.0 C (55.4 F)	-33.2 C (-27.8 F)	n/a	n/a
Mar	20.0 C (68.0 F)	-26.5 C (-15.7 F)	n/a	n/a
Apr	24.5 C (76.1 F)	-15.2 C (4.6 F)	n/a	n/a
May	30.2 C (86.4 F)	-6.4 C (20.5 F)	n/a	n/a
Jun	32.0 C (89.6 F)	-1.9 C (28.6 F)	n/a	n/a
Jul	32.5 C (90.5 F)	-0.2 C (31.6 F)	n/a	n/a
Aug	35.0 C (95.0 F)	-1.5 C (29.3 F)	n/a	n/a
Sep	27.8 C (82.0 F)	-6.1 C (21.0 F)	n/a	n/a
Oct	21.8 C (71.2 F)	-11.8 C (10.8 F)	n/a	n/a
Nov	15.0 C (59.0 F)	-19.0 C (-2.2 F)	n/a	n/a
Dec	11.4 C (52.5 F)	-24.0 C (-11.2 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Hassleby still stand. 1955 holds the most, with 58.

Standing records at Hassleby by the year they were set
Year set	Standing records
1948	16
1949	40
1950	12
1951	25
1952	37
1953	44
1954	21
1955	58
1956	41
1957	45
1958	38
1959	40
1960	22
1961	42
1962	30
1963	22
1964	37
1965	50
1966	43
1967	17
1968	57
1969	51
1970	28
1971	49
1972	39
1973	51
1974	28
1975	48
1976	38
1977	25
1978	53
1979	29
1980	38
1981	38
1982	40
1983	44
1984	21
1985	35
1986	34
1987	38

All-Time Record Progression

7 new records

7 all-time records were set at Hassleby between 13 July 1983 and 7 July 2012. Each dot is a new record.

When Hassleby set new all-time records
Date	Kind	Detail
1983-07-13	Record high minimum temperature	Record high minimum temperature 18.4 C (65.1 F)
1987-01-10	Record low maximum temperature	Record low maximum temperature -23.0 C (-9.4 F)
2000-09-02	Record daily precipitation	Record daily precipitation 61.2 mm (2.4 in)
2003-07-02	Record daily precipitation	Record daily precipitation 64.3 mm (2.5 in)
2004-07-09	Record daily precipitation	Record daily precipitation 74.0 mm (2.9 in)
2007-06-26	Record daily precipitation	Record daily precipitation 81.0 mm (3.2 in)
2012-07-07	Record daily precipitation	Record daily precipitation 120.7 mm (4.8 in)

Wettest Day of Each Month

Jul: 120.7 mm (4.8 in)

The wettest day on record for each calendar month at Hassleby. The most was 120.7 mm (4.8 in) on 7 July 2012.

Record daily precipitation for each month at Hassleby
Month	Record daily precipitation (mm)	Date
Jan	23.4 mm (0.9 in)	4 January 2023
Feb	22.2 mm (0.9 in)	9 February 2020
Mar	26.0 mm (1.0 in)	20 March 1974
Apr	35.4 mm (1.4 in)	10 April 1959
May	38.8 mm (1.5 in)	5 May 1952
Jun	81.0 mm (3.2 in)	26 June 2007
Jul	120.7 mm (4.8 in)	7 July 2012
Aug	57.0 mm (2.2 in)	10 August 1985
Sep	61.2 mm (2.4 in)	2 September 2000
Oct	43.0 mm (1.7 in)	13 October 1964
Nov	35.4 mm (1.4 in)	5 November 2014
Dec	23.7 mm (0.9 in)	3 December 1976

Period of Record Coverage

1948 to 1987

40 years of record at Hassleby, 1948 to 1987. 2 years have data for under 90 percent of days and are left out of rankings: 1948, 1987.

Days with data per year at Hassleby
Year	Days with data	Share of year	Complete
1948	153	42%	No
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	362	99%	Yes
1957	365	100%	Yes
1958	363	99%	Yes
1959	365	100%	Yes
1960	365	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	181	50%	No

Latest Records

Latest records at Hassleby
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 June 2026	Hassleby, SE	daily rain	21.8 mm (0.9 in)	5.5 mm (0.22 in)	52 years	20 of 100 (Routine)
11 May 2026	Hassleby, SE	daily rain	18.1 mm (0.7 in)	10.0 mm (0.4 in)	8 years	20 of 100 (Routine)
11 September 2025	Hassleby, SE	daily rain	31.0 mm (1.2 in)	8.1 mm (0.32 in)	0 years	23 of 100 (Routine)
23 June 2025	Hassleby, SE	daily rain	27.3 mm (1.1 in)	7.7 mm (0.30 in)	40 years	33 of 100 (Routine)
6 January 2025	Hassleby, SE	daily rain (Tie)	15.8 mm (0.6 in)	tie	50 years	6 of 100 (Routine)
8 October 2024	Hassleby, SE	daily rain	23.7 mm (0.9 in)	16.2 mm (0.6 in)	63 years	20 of 100 (Routine)
11 September 2024	Hassleby, SE	daily rain	22.9 mm (0.9 in)	1.9 mm (0.07 in)	47 years	20 of 100 (Routine)
30 June 2024	Hassleby, SE	daily rain	17.2 mm (0.7 in)	0.2 mm (0.01 in)	13 years	13 of 100 (Routine)
2 April 2024	Hassleby, SE	daily rain	33.6 mm (1.3 in)	21.8 mm (0.9 in)	41 years	62 of 100 (Major)
18 February 2024	Hassleby, SE	daily rain	10.9 mm (0.4 in)	2.9 mm (0.11 in)	52 years	20 of 100 (Routine)
29 October 2023	Hassleby, SE	daily rain	23.1 mm (0.9 in)	4.6 mm (0.18 in)	64 years	20 of 100 (Routine)
1 September 2023	Hassleby, SE	daily rain	43.5 mm (1.7 in)	15.7 mm (0.6 in)	32 years	46 of 100 (Notable)
6 August 2023	Hassleby, SE	daily rain	27.7 mm (1.1 in)	7.8 mm (0.31 in)	29 years	29 of 100 (Routine)
30 March 2023	Hassleby, SE	daily rain	14.7 mm (0.6 in)	2.9 mm (0.11 in)	8 years	20 of 100 (Routine)
7 March 2023	Hassleby, SE	daily rain	10.1 mm (0.4 in)	1.3 mm (0.05 in)	37 years	20 of 100 (Routine)
24 February 2023	Hassleby, SE	daily rain	7.8 mm (0.31 in)	0.4 mm (0.02 in)	0 years	11 of 100 (Routine)
4 January 2023	Hassleby, SE	monthly rain	23.4 mm (0.9 in)	0.4 mm (0.02 in)	54 years	20 of 100 (Routine)
2 January 2023	Hassleby, SE	daily rain	9.7 mm (0.38 in)	0.8 mm (0.03 in)	45 years	20 of 100 (Routine)
4 November 2022	Hassleby, SE	daily rain	13.4 mm (0.5 in)	2.9 mm (0.11 in)	56 years	20 of 100 (Routine)
28 August 2022	Hassleby, SE	daily rain	35.8 mm (1.4 in)	25.6 mm (1.0 in)	0 years	50 of 100 (Notable)

Climate Trend

38 complete years, 1949 to 1986

One stripe for each of 38 complete years at Hassleby, 1949 to 1986. Blue stripes are years cooler than the station's own mean of 5.8 C (42.5 F); red stripes are warmer. The coolest year was 1985, at 4.1 C (39.4 F), and the warmest was 1949, at 7.6 C (45.7 F). The strongest colour marks a difference of 1.8 C (3.2 F).

Annual mean temperature at Hassleby as warming stripes, 1949 to 1986
Year	Annual mean temperature	Difference from the station mean
1949	7.6 C	+1.76 C
1950	6.3 C	+0.47 C
1951	6.2 C	+0.40 C
1952	5.1 C	-0.76 C
1953	7.2 C	+1.33 C
1954	5.6 C	-0.22 C
1955	5.4 C	-0.49 C
1956	4.7 C	-1.15 C
1957	6.3 C	+0.43 C
1958	5.4 C	-0.47 C
1959	7.1 C	+1.27 C
1960	5.8 C	-0.02 C
1961	6.9 C	+1.10 C
1962	5.0 C	-0.84 C
1963	5.1 C	-0.73 C
1964	6.1 C	+0.27 C
1965	4.9 C	-0.97 C
1966	5.0 C	-0.84 C
1967	6.4 C	+0.58 C
1968	5.9 C	+0.06 C
1969	5.3 C	-0.55 C
1970	4.7 C	-1.18 C
1971	6.2 C	+0.34 C
1972	6.4 C	+0.60 C
1973	6.2 C	+0.32 C
1974	6.7 C	+0.82 C
1975	7.3 C	+1.47 C
1976	5.3 C	-0.54 C
1977	5.8 C	-0.09 C
1978	5.4 C	-0.46 C
1979	5.3 C	-0.56 C
1980	5.1 C	-0.74 C
1981	5.3 C	-0.57 C
1982	6.4 C	+0.55 C
1983	6.8 C	+0.93 C
1984	6.5 C	+0.63 C
1985	4.1 C	-1.74 C
1986	5.3 C	-0.53 C

The fitted trend in annual mean temperature here over 1949 to 1986 is -0.1 C (-0.4 to 0.1) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.2 F (-0.7 to 0.2) per decade. The slope is a straight line fitted to 38 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Hassleby
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.1 C (-0.4 to 0.1) per decade	-0.2 F (-0.7 to 0.2) per decade	1949 to 1986	38	Not clearly different from zero
Mean daily maximum	-0.1 C (-0.3 to 0.2) per decade	-0.1 F (-0.6 to 0.4) per decade	1949 to 1986	38	Not clearly different from zero
Mean daily minimum	-0.22 C (-0.46 to 0.03) per decade	-0.4 F (-0.8 to 0.1) per decade	1949 to 1986	38	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

1919 to 2026

Yearly extremes at Hassleby: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	35.0 C (95.0 F)	1975	30.0 C (86.0 F)	40
Coldest night (TNn)	-33.2 C (-27.8 F)	1966	-21.6 C (-6.9 F)	40
Wettest day (Rx1day)	120.7 mm (4.8 in)	2012	29.2 mm (1.1 in)	86
Wettest five days (Rx5day)	137.4 mm (5.4 in)	2012	50.4 mm (2.0 in)	86
Longest dry spell (CDD)	121 days	1924	22 days	86

Hottest day (TXx)

The hottest day of the year at Hassleby, 1919 to 2026. The record is 35.0 C (95.0 F) in 1975, marked on the chart; the median year is 30.0 C (86.0 F).

Hottest day (TXx) at Hassleby by year
Year	Hottest day (TXx)
1919	n/a
1920	n/a
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1948	30.7 C (87.3 F)
1949	31.6 C (88.9 F)
1950	29.0 C (84.2 F)
1951	27.8 C (82.0 F)
1952	29.3 C (84.7 F)
1953	30.8 C (87.4 F)
1954	27.8 C (82.0 F)
1955	31.0 C (87.8 F)
1956	29.8 C (85.6 F)
1957	30.2 C (86.4 F)
1958	29.0 C (84.2 F)
1959	31.2 C (88.2 F)
1960	27.0 C (80.6 F)
1961	29.4 C (84.9 F)
1962	26.5 C (79.7 F)
1963	30.0 C (86.0 F)
1964	30.2 C (86.4 F)
1965	26.0 C (78.8 F)
1966	29.0 C (84.2 F)
1967	28.0 C (82.4 F)
1968	31.5 C (88.7 F)
1969	31.0 C (87.8 F)
1970	32.0 C (89.6 F)
1971	30.0 C (86.0 F)
1972	30.1 C (86.2 F)
1973	30.0 C (86.0 F)
1974	26.2 C (79.2 F)
1975	35.0 C (95.0 F)
1976	30.0 C (86.0 F)
1977	30.5 C (86.9 F)
1978	30.2 C (86.4 F)
1979	31.5 C (88.7 F)
1980	28.4 C (83.1 F)
1981	28.0 C (82.4 F)
1982	32.5 C (90.5 F)
1983	32.5 C (90.5 F)
1984	28.2 C (82.8 F)
1985	28.0 C (82.4 F)
1986	31.5 C (88.7 F)
1987	24.5 C (76.1 F)
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	n/a
2009	n/a
2010	n/a
2011	n/a
2012	n/a
2013	n/a
2014	n/a
2015	n/a
2016	n/a
2017	n/a
2018	n/a
2019	n/a
2020	n/a
2021	n/a
2022	n/a
2023	n/a
2024	n/a
2025	n/a
2026	n/a

Coldest night (TNn)

The coldest night of the year at Hassleby, 1919 to 2026. The record is -33.2 C (-27.8 F) in 1966, marked on the chart; the median year is -21.6 C (-6.9 F).

Coldest night (TNn) at Hassleby by year
Year	Coldest night (TNn)
1919	n/a
1920	n/a
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1948	-10.1 C (13.8 F)
1949	-15.8 C (3.6 F)
1950	-20.4 C (-4.7 F)
1951	-16.6 C (2.1 F)
1952	-18.0 C (-0.4 F)
1953	-28.2 C (-18.8 F)
1954	-21.6 C (-6.9 F)
1955	-20.6 C (-5.1 F)
1956	-29.0 C (-20.2 F)
1957	-16.4 C (2.5 F)
1958	-24.8 C (-12.6 F)
1959	-15.0 C (5.0 F)
1960	-24.0 C (-11.2 F)
1961	-17.1 C (1.2 F)
1962	-21.6 C (-6.9 F)
1963	-24.3 C (-11.7 F)
1964	-18.1 C (-0.6 F)
1965	-25.9 C (-14.6 F)
1966	-33.2 C (-27.8 F)
1967	-20.6 C (-5.1 F)
1968	-23.9 C (-11.0 F)
1969	-27.2 C (-17.0 F)
1970	-23.0 C (-9.4 F)
1971	-23.2 C (-9.8 F)
1972	-21.5 C (-6.7 F)
1973	-19.0 C (-2.2 F)
1974	-13.0 C (8.6 F)
1975	-14.6 C (5.7 F)
1976	-19.5 C (-3.1 F)
1977	-18.5 C (-1.3 F)
1978	-25.5 C (-13.9 F)
1979	-22.5 C (-8.5 F)
1980	-25.5 C (-13.9 F)
1981	-24.0 C (-11.2 F)
1982	-24.0 C (-11.2 F)
1983	-18.0 C (-0.4 F)
1984	-21.5 C (-6.7 F)
1985	-27.2 C (-17.0 F)
1986	-23.5 C (-10.3 F)
1987	-27.5 C (-17.5 F)
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	n/a
2009	n/a
2010	n/a
2011	n/a
2012	n/a
2013	n/a
2014	n/a
2015	n/a
2016	n/a
2017	n/a
2018	n/a
2019	n/a
2020	n/a
2021	n/a
2022	n/a
2023	n/a
2024	n/a
2025	n/a
2026	n/a

Wettest day (Rx1day)

The wettest day of the year at Hassleby, 1919 to 2026. The record is 120.7 mm (4.8 in) in 2012, marked on the chart; the median year is 29.2 mm (1.1 in).

Wettest day (Rx1day) at Hassleby by year
Year	Wettest day (Rx1day)
1919	33.9 mm (1.3 in)
1920	35.5 mm (1.4 in)
1922	10.5 mm (0.4 in)
1923	0.0 mm (0.00 in)
1924	0.0 mm (0.00 in)
1925	0.0 mm (0.00 in)
1926	0.0 mm (0.00 in)
1948	14.5 mm (0.6 in)
1949	17.7 mm (0.7 in)
1950	57.4 mm (2.3 in)
1951	25.2 mm (1.0 in)
1952	38.8 mm (1.5 in)
1953	29.2 mm (1.1 in)
1954	37.8 mm (1.5 in)
1955	27.6 mm (1.1 in)
1956	35.8 mm (1.4 in)
1957	27.8 mm (1.1 in)
1958	22.3 mm (0.9 in)
1959	35.4 mm (1.4 in)
1960	45.0 mm (1.8 in)
1961	45.0 mm (1.8 in)
1962	24.2 mm (1.0 in)
1963	21.4 mm (0.8 in)
1964	43.0 mm (1.7 in)
1965	18.5 mm (0.7 in)
1966	44.2 mm (1.7 in)
1967	37.9 mm (1.5 in)
1968	26.8 mm (1.1 in)
1969	20.0 mm (0.8 in)
1970	28.0 mm (1.1 in)
1971	26.5 mm (1.0 in)
1972	33.5 mm (1.3 in)
1973	46.2 mm (1.8 in)
1974	30.5 mm (1.2 in)
1975	20.0 mm (0.8 in)
1976	29.0 mm (1.1 in)
1977	27.6 mm (1.1 in)
1978	24.9 mm (1.0 in)
1979	36.0 mm (1.4 in)
1980	48.6 mm (1.9 in)
1981	22.0 mm (0.9 in)
1982	18.5 mm (0.7 in)
1983	24.0 mm (0.9 in)
1984	26.9 mm (1.1 in)
1985	57.0 mm (2.2 in)
1986	22.8 mm (0.9 in)
1987	53.8 mm (2.1 in)
1988	29.1 mm (1.1 in)
1989	24.5 mm (1.0 in)
1990	38.3 mm (1.5 in)
1991	52.8 mm (2.1 in)
1992	20.5 mm (0.8 in)
1993	24.8 mm (1.0 in)
1994	28.4 mm (1.1 in)
1995	34.8 mm (1.4 in)
1996	38.0 mm (1.5 in)
1997	23.9 mm (0.9 in)
1998	37.6 mm (1.5 in)
1999	20.5 mm (0.8 in)
2000	61.2 mm (2.4 in)
2001	19.1 mm (0.8 in)
2002	25.3 mm (1.0 in)
2003	64.3 mm (2.5 in)
2004	74.0 mm (2.9 in)
2005	36.1 mm (1.4 in)
2006	29.5 mm (1.2 in)
2007	81.0 mm (3.2 in)
2008	42.0 mm (1.7 in)
2009	25.5 mm (1.0 in)
2010	43.6 mm (1.7 in)
2011	28.2 mm (1.1 in)
2012	120.7 mm (4.8 in)
2013	30.3 mm (1.2 in)
2014	46.8 mm (1.8 in)
2015	23.0 mm (0.9 in)
2016	23.3 mm (0.9 in)
2017	33.9 mm (1.3 in)
2018	37.9 mm (1.5 in)
2019	23.9 mm (0.9 in)
2020	22.2 mm (0.9 in)
2021	31.4 mm (1.2 in)
2022	43.4 mm (1.7 in)
2023	43.5 mm (1.7 in)
2024	40.7 mm (1.6 in)
2025	31.0 mm (1.2 in)
2026	21.8 mm (0.9 in)

Wettest five days (Rx5day)

The wettest five days of the year at Hassleby, 1919 to 2026. The record is 137.4 mm (5.4 in) in 2012, marked on the chart; the median year is 50.4 mm (2.0 in).

Wettest five days (Rx5day) at Hassleby by year
Year	Wettest five days (Rx5day)
1919	42.4 mm (1.7 in)
1920	52.9 mm (2.1 in)
1922	32.8 mm (1.3 in)
1923	0.0 mm (0.00 in)
1924	0.0 mm (0.00 in)
1925	0.0 mm (0.00 in)
1926	0.0 mm (0.00 in)
1948	31.1 mm (1.2 in)
1949	39.7 mm (1.6 in)
1950	63.1 mm (2.5 in)
1951	53.8 mm (2.1 in)
1952	60.9 mm (2.4 in)
1953	56.4 mm (2.2 in)
1954	50.5 mm (2.0 in)
1955	42.3 mm (1.7 in)
1956	41.4 mm (1.6 in)
1957	39.8 mm (1.6 in)
1958	42.0 mm (1.7 in)
1959	59.2 mm (2.3 in)
1960	60.1 mm (2.4 in)
1961	76.1 mm (3.0 in)
1962	35.6 mm (1.4 in)
1963	46.1 mm (1.8 in)
1964	67.2 mm (2.6 in)
1965	36.9 mm (1.5 in)
1966	54.9 mm (2.2 in)
1967	46.0 mm (1.8 in)
1968	47.7 mm (1.9 in)
1969	55.5 mm (2.2 in)
1970	60.9 mm (2.4 in)
1971	43.1 mm (1.7 in)
1972	52.7 mm (2.1 in)
1973	59.1 mm (2.3 in)
1974	55.9 mm (2.2 in)
1975	38.8 mm (1.5 in)
1976	50.2 mm (2.0 in)
1977	37.0 mm (1.5 in)
1978	51.1 mm (2.0 in)
1979	75.8 mm (3.0 in)
1980	60.0 mm (2.4 in)
1981	53.9 mm (2.1 in)
1982	40.2 mm (1.6 in)
1983	32.4 mm (1.3 in)
1984	50.0 mm (2.0 in)
1985	63.5 mm (2.5 in)
1986	39.1 mm (1.5 in)
1987	79.4 mm (3.1 in)
1988	45.9 mm (1.8 in)
1989	42.5 mm (1.7 in)
1990	55.4 mm (2.2 in)
1991	67.3 mm (2.6 in)
1992	34.7 mm (1.4 in)
1993	49.0 mm (1.9 in)
1994	71.4 mm (2.8 in)
1995	84.7 mm (3.3 in)
1996	44.3 mm (1.7 in)
1997	43.4 mm (1.7 in)
1998	63.5 mm (2.5 in)
1999	36.0 mm (1.4 in)
2000	76.6 mm (3.0 in)
2001	44.7 mm (1.8 in)
2002	44.2 mm (1.7 in)
2003	100.1 mm (3.9 in)
2004	124.7 mm (4.9 in)
2005	60.8 mm (2.4 in)
2006	52.8 mm (2.1 in)
2007	111.7 mm (4.4 in)
2008	64.6 mm (2.5 in)
2009	48.5 mm (1.9 in)
2010	62.7 mm (2.5 in)
2011	78.1 mm (3.1 in)
2012	137.4 mm (5.4 in)
2013	62.0 mm (2.4 in)
2014	48.8 mm (1.9 in)
2015	41.2 mm (1.6 in)
2016	41.5 mm (1.6 in)
2017	48.3 mm (1.9 in)
2018	57.8 mm (2.3 in)
2019	27.6 mm (1.1 in)
2020	40.4 mm (1.6 in)
2021	60.3 mm (2.4 in)
2022	80.9 mm (3.2 in)
2023	63.4 mm (2.5 in)
2024	53.9 mm (2.1 in)
2025	39.8 mm (1.6 in)
2026	36.1 mm (1.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Hassleby, 1919 to 2026. The record is 121 days in 1924, marked on the chart; the median year is 22 days.

Longest dry spell (CDD) at Hassleby by year
Year	Longest dry spell (CDD)
1919	12 days
1920	31 days
1922	61 days
1923	120 days
1924	121 days
1925	92 days
1926	90 days
1948	20 days
1949	22 days
1950	15 days
1951	41 days
1952	19 days
1953	22 days
1954	16 days
1955	26 days
1956	22 days
1957	17 days
1958	17 days
1959	34 days
1960	27 days
1961	19 days
1962	22 days
1963	20 days
1964	36 days
1965	16 days
1966	17 days
1967	20 days
1968	21 days
1969	33 days
1970	18 days
1971	14 days
1972	17 days
1973	22 days
1974	41 days
1975	18 days
1976	21 days
1977	14 days
1978	17 days
1979	24 days
1980	21 days
1981	25 days
1982	22 days
1983	20 days
1984	29 days
1985	25 days
1986	27 days
1987	26 days
1988	15 days
1989	20 days
1990	16 days
1991	19 days
1992	49 days
1993	17 days
1994	21 days
1995	29 days
1996	25 days
1997	22 days
1998	10 days
1999	15 days
2000	25 days
2001	12 days
2002	22 days
2003	56 days
2004	16 days
2005	20 days
2006	22 days
2007	16 days
2008	21 days
2009	36 days
2010	15 days
2011	25 days
2012	18 days
2013	21 days
2014	12 days
2015	26 days
2016	24 days
2017	19 days
2018	28 days
2019	40 days
2020	24 days
2021	23 days
2022	37 days
2023	32 days
2024	19 days
2025	22 days
2026	21 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

38 years with a frost

Across 38 years with a frost, the median last spring frost at Hassleby falls on 24 May and the median first autumn frost on 19 September, which leaves a median of 113 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 Hassleby
Measure	Median, all years	Earliest period	Recent period (1957 to 1986)	Recent against earliest	Fitted trend
Last spring frost	24 May	n/a	24 May	n/a	-2.6 days per decade
First autumn frost	19 September	n/a	19 September	n/a	-1.1 days per decade
Growing days	113 days	n/a	114 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

78 years, 1919 to 2025

A day with at least 31.0 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 98.5 mm (3.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Hassleby: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	31.0 mm (1.2 in)
5 years	43.3 mm (1.7 in)
10 years	53.4 mm (2.1 in)
25 years	68.8 mm (2.7 in)
50 years	82.6 mm (3.3 in)
100 years	98.5 mm (3.9 in)	Longer than the 78 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, 78 years of values from 1919 to 2025.

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: 120.7 mm (4.8 in) in 2012; 81.0 mm (3.2 in) in 2007; 74.0 mm (2.9 in) in 2004.

Download the Data

Data for Hassleby standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Hassleby 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).