Ullanger Weather Records (SWE00139928)

Record envelope, standing records and threshold days for Ullanger (SWE00139928), Sweden, with 62 years of record.

Key Facts for Ullanger

Ullanger (SWE00139928) is a weather station in Sweden at 63.01 latitude and 18.19 longitude, 20 m (66 ft) above sea level.
The station reports from 1960 to 2021, 62 years of record.
1,464 records set at Ullanger still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Ullanger set a daily record precipitation of 33.4 mm (1.3 in) on 23 September 2021.

About the Station

Location: Sweden, 63.01 latitude, 18.19 longitude.
Elevation: 20 m (66 ft).
Period of record: 1960 to 2021, 62 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 Ullanger. 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 Ullanger, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	10.6 C (51.1 F)	-33.5 C (-28.3 F)	n/a	n/a
Feb	11.7 C (53.1 F)	-34.7 C (-30.5 F)	n/a	n/a
Mar	12.5 C (54.5 F)	-26.6 C (-15.9 F)	n/a	n/a
Apr	21.0 C (69.8 F)	-17.8 C (0.0 F)	n/a	n/a
May	27.4 C (81.3 F)	-9.5 C (14.9 F)	n/a	n/a
Jun	31.6 C (88.9 F)	-2.0 C (28.4 F)	n/a	n/a
Jul	32.0 C (89.6 F)	0.9 C (33.6 F)	n/a	n/a
Aug	29.9 C (85.8 F)	-1.3 C (29.7 F)	n/a	n/a
Sep	23.6 C (74.5 F)	-7.8 C (18.0 F)	n/a	n/a
Oct	20.6 C (69.1 F)	-19.6 C (-3.3 F)	n/a	n/a
Nov	13.0 C (55.4 F)	-25.3 C (-13.5 F)	n/a	n/a
Dec	9.0 C (48.2 F)	-29.3 C (-20.7 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Ullanger still stand. 1966 holds the most, with 65.

Standing records at Ullanger by the year they were set
Year set	Standing records
1960	14
1961	53
1962	28
1963	22
1964	26
1965	34
1966	65
1967	29
1968	58
1969	33
1970	23
1971	46
1972	41
1973	52
1974	17
1975	39
1976	41
1977	44
1978	51
1979	27
1980	37
1981	31
1982	32
1983	27
1984	34
1985	42
1986	42
1987	59
1988	38
1989	41
1990	52
1991	43
1992	60
1993	38
1994	39
1995	35
1996	24
1997	43
1998	4

All-Time Record Progression

1 new records

1 all-time records were set at Ullanger between 26 July 1994 and 26 July 1994. Each dot is a new record.

Wettest Day of Each Month

Sep: 70.9 mm (2.8 in)

The wettest day on record for each calendar month at Ullanger. The most was 70.9 mm (2.8 in) on 12 September 1988.

Record daily precipitation for each month at Ullanger
Month	Record daily precipitation (mm)	Date
Jan	45.1 mm (1.8 in)	11 January 2021
Feb	37.2 mm (1.5 in)	12 February 1973
Mar	36.9 mm (1.5 in)	20 March 2004
Apr	38.2 mm (1.5 in)	27 April 1992
May	35.8 mm (1.4 in)	18 May 1967
Jun	41.0 mm (1.6 in)	18 June 1991
Jul	51.8 mm (2.0 in)	19 July 2000
Aug	69.1 mm (2.7 in)	12 August 2013
Sep	70.9 mm (2.8 in)	12 September 1988
Oct	70.6 mm (2.8 in)	30 October 2000
Nov	61.6 mm (2.4 in)	3 November 1977
Dec	50.0 mm (2.0 in)	9 December 2011

Period of Record Coverage

1960 to 1998

39 years of record at Ullanger, 1960 to 1998. 2 years have data for under 90 percent of days and are left out of rankings: 1960, 1998.

Days with data per year at Ullanger
Year	Days with data	Share of year	Complete
1960	140	38%	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	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	351	96%	Yes
1978	365	100%	Yes
1979	356	98%	Yes
1980	366	100%	Yes
1981	365	100%	Yes
1982	335	92%	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	31	8%	No

Latest Records

Latest records at Ullanger
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
23 September 2021	Ullanger, SE	daily rain	33.4 mm (1.3 in)	5.6 mm (0.22 in)	36 years	23 of 100 (Routine)
20 June 2021	Ullanger, SE	daily rain	18.0 mm (0.7 in)	5.3 mm (0.21 in)	28 years	20 of 100 (Routine)
14 June 2021	Ullanger, SE	daily rain	24.0 mm (0.9 in)	11.0 mm (0.4 in)	2 years	20 of 100 (Routine)
23 February 2021	Ullanger, SE	daily rain	10.5 mm (0.4 in)	1.5 mm (0.06 in)	54 years	20 of 100 (Routine)
22 January 2021	Ullanger, SE	daily rain	26.4 mm (1.0 in)	4.3 mm (0.17 in)	59 years	31 of 100 (Routine)
21 January 2021	Ullanger, SE	daily rain	18.6 mm (0.7 in)	3.1 mm (0.12 in)	56 years	20 of 100 (Routine)
12 January 2021	Ullanger, SE	daily rain	17.0 mm (0.7 in)	1.5 mm (0.06 in)	17 years	13 of 100 (Routine)
11 January 2021	Ullanger, SE	monthly rain	45.1 mm (1.8 in)	5.5 mm (0.22 in)	54 years	42 of 100 (Notable)
28 December 2020	Ullanger, SE	daily rain	23.4 mm (0.9 in)	3.0 mm (0.12 in)	53 years	20 of 100 (Routine)
22 December 2020	Ullanger, SE	daily rain	15.6 mm (0.6 in)	1.9 mm (0.07 in)	32 years	18 of 100 (Routine)
9 October 2020	Ullanger, SE	daily rain	18.1 mm (0.7 in)	2.1 mm (0.08 in)	21 years	14 of 100 (Routine)
26 September 2020	Ullanger, SE	daily rain	50.2 mm (2.0 in)	33.1 mm (1.3 in)	8 years	45 of 100 (Notable)
8 July 2020	Ullanger, SE	daily rain	42.9 mm (1.7 in)	34.1 mm (1.3 in)	51 years	61 of 100 (Major)
2 July 2020	Ullanger, SE	daily rain	21.9 mm (0.9 in)	0.2 mm (0.01 in)	30 years	15 of 100 (Routine)
1 May 2020	Ullanger, SE	daily rain	25.8 mm (1.0 in)	12.3 mm (0.5 in)	19 years	37 of 100 (Notable)
4 March 2020	Ullanger, SE	daily rain	12.7 mm (0.5 in)	5.2 mm (0.20 in)	32 years	20 of 100 (Routine)
20 February 2020	Ullanger, SE	daily rain	8.8 mm (0.35 in)	0.4 mm (0.02 in)	20 years	12 of 100 (Routine)
15 February 2020	Ullanger, SE	daily rain	11.6 mm (0.5 in)	0.5 mm (0.02 in)	5 years	8 of 100 (Routine)
14 December 2019	Ullanger, SE	daily rain	34.1 mm (1.3 in)	18.1 mm (0.7 in)	1 year	36 of 100 (Notable)
30 September 2019	Ullanger, SE	daily rain	13.3 mm (0.5 in)	2.5 mm (0.10 in)	17 years	13 of 100 (Routine)

Climate Trend

35 complete years, 1961 to 1997

One stripe for each of 35 complete years at Ullanger, 1961 to 1997. 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 (33.8 F), and the warmest was 1989, at 4.7 C (40.5 F). The strongest colour marks a difference of 2.1 C (3.8 F).

Annual mean temperature at Ullanger as warming stripes, 1961 to 1997
Year	Annual mean temperature	Difference from the station mean
1961	4.4 C	+1.33 C
1962	2.3 C	-0.77 C
1963	2.6 C	-0.47 C
1964	3.2 C	+0.17 C
1965	2.3 C	-0.75 C
1966	1.3 C	-1.74 C
1967	3.0 C	+0.00 C
1968	2.2 C	-0.81 C
1969	2.0 C	-1.02 C
1970	2.1 C	-0.98 C
1971	2.8 C	-0.24 C
1972	3.6 C	+0.55 C
1973	3.6 C	+0.58 C
1974	4.2 C	+1.13 C
1975	4.7 C	+1.66 C
1976	2.3 C	-0.69 C
1978	1.9 C	-1.17 C
1979	2.3 C	-0.74 C
1980	2.3 C	-0.76 C
1981	2.2 C	-0.83 C
1983	3.7 C	+0.68 C
1984	3.9 C	+0.84 C
1985	1.0 C	-2.05 C
1986	2.5 C	-0.49 C
1987	1.7 C	-1.31 C
1988	3.5 C	+0.50 C
1989	4.7 C	+1.70 C
1990	4.7 C	+1.66 C
1991	4.0 C	+1.01 C
1992	4.1 C	+1.09 C
1993	3.5 C	+0.42 C
1994	2.8 C	-0.21 C
1995	3.5 C	+0.51 C
1996	2.8 C	-0.27 C
1997	4.4 C	+1.34 C

The fitted trend in annual mean temperature here over 1961 to 1997 is 0.28 C (-0.03 to 0.58) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.5 F (-0.1 to 1.0) per decade. The slope is a straight line fitted to 35 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Ullanger
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.28 C (-0.03 to 0.58) per decade	0.5 F (-0.1 to 1.0) per decade	1961 to 1997	35	Not clearly different from zero
Mean daily maximum	0.26 C (-0.03 to 0.55) per decade	0.5 F (-0.1 to 1.0) per decade	1961 to 1997	35	Not clearly different from zero
Mean daily minimum	0.29 C (-0.05 to 0.63) per decade	0.5 F (-0.1 to 1.1) per decade	1961 to 1997	35	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

1960 to 2021

Yearly extremes at Ullanger: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	32.0 C (89.6 F)	1994	27.9 C (82.2 F)	39
Coldest night (TNn)	-34.7 C (-30.5 F)	1978	-25.2 C (-13.4 F)	39
Wettest day (Rx1day)	70.9 mm (2.8 in)	1988	40.3 mm (1.6 in)	62
Wettest five days (Rx5day)	151.5 mm (6.0 in)	2001	70.6 mm (2.8 in)	62
Longest dry spell (CDD)	55 days	2008	22 days	62

Hottest day (TXx)

The hottest day of the year at Ullanger, 1960 to 2021. The record is 32.0 C (89.6 F) in 1994, marked on the chart; the median year is 27.9 C (82.2 F).

Hottest day (TXx) at Ullanger by year
Year	Hottest day (TXx)
1960	19.6 C (67.3 F)
1961	28.6 C (83.5 F)
1962	23.7 C (74.7 F)
1963	25.5 C (77.9 F)
1964	24.8 C (76.6 F)
1965	27.5 C (81.5 F)
1966	28.3 C (82.9 F)
1967	25.6 C (78.1 F)
1968	30.3 C (86.5 F)
1969	28.7 C (83.7 F)
1970	27.3 C (81.1 F)
1971	28.5 C (83.3 F)
1972	27.6 C (81.7 F)
1973	29.1 C (84.4 F)
1974	26.4 C (79.5 F)
1975	29.9 C (85.8 F)
1976	26.9 C (80.4 F)
1977	28.9 C (84.0 F)
1978	27.1 C (80.8 F)
1979	29.5 C (85.1 F)
1980	28.4 C (83.1 F)
1981	26.0 C (78.8 F)
1982	28.8 C (83.8 F)
1983	29.5 C (85.1 F)
1984	24.5 C (76.1 F)
1985	27.1 C (80.8 F)
1986	30.0 C (86.0 F)
1987	28.2 C (82.8 F)
1988	31.6 C (88.9 F)
1989	29.1 C (84.4 F)
1990	27.4 C (81.3 F)
1991	29.3 C (84.7 F)
1992	27.4 C (81.3 F)
1993	26.2 C (79.2 F)
1994	32.0 C (89.6 F)
1995	27.5 C (81.5 F)
1996	27.9 C (82.2 F)
1997	28.7 C (83.7 F)
1998	5.6 C (42.1 F)
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

Coldest night (TNn)

The coldest night of the year at Ullanger, 1960 to 2021. The record is -34.7 C (-30.5 F) in 1978, marked on the chart; the median year is -25.2 C (-13.4 F).

Coldest night (TNn) at Ullanger by year
Year	Coldest night (TNn)
1960	-22.3 C (-8.1 F)
1961	-24.5 C (-12.1 F)
1962	-24.6 C (-12.3 F)
1963	-25.2 C (-13.4 F)
1964	-23.3 C (-9.9 F)
1965	-25.9 C (-14.6 F)
1966	-33.0 C (-27.4 F)
1967	-30.1 C (-22.2 F)
1968	-27.2 C (-17.0 F)
1969	-29.1 C (-20.4 F)
1970	-28.2 C (-18.8 F)
1971	-24.0 C (-11.2 F)
1972	-23.1 C (-9.6 F)
1973	-27.8 C (-18.0 F)
1974	-20.6 C (-5.1 F)
1975	-22.4 C (-8.3 F)
1976	-29.0 C (-20.2 F)
1977	-25.2 C (-13.4 F)
1978	-34.7 C (-30.5 F)
1979	-29.8 C (-21.6 F)
1980	-28.7 C (-19.7 F)
1981	-26.4 C (-15.5 F)
1982	-24.7 C (-12.5 F)
1983	-25.3 C (-13.5 F)
1984	-26.7 C (-16.1 F)
1985	-32.3 C (-26.1 F)
1986	-28.6 C (-19.5 F)
1987	-33.5 C (-28.3 F)
1988	-22.0 C (-7.6 F)
1989	-28.8 C (-19.8 F)
1990	-20.2 C (-4.4 F)
1991	-19.4 C (-2.9 F)
1992	-19.6 C (-3.3 F)
1993	-21.5 C (-6.7 F)
1994	-29.6 C (-21.3 F)
1995	-24.9 C (-12.8 F)
1996	-24.8 C (-12.6 F)
1997	-21.0 C (-5.8 F)
1998	-19.4 C (-2.9 F)
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

Wettest day (Rx1day)

The wettest day of the year at Ullanger, 1960 to 2021. The record is 70.9 mm (2.8 in) in 1988, marked on the chart; the median year is 40.3 mm (1.6 in).

Wettest day (Rx1day) at Ullanger by year
Year	Wettest day (Rx1day)
1960	36.0 mm (1.4 in)
1961	39.6 mm (1.6 in)
1962	43.0 mm (1.7 in)
1963	40.1 mm (1.6 in)
1964	34.6 mm (1.4 in)
1965	70.7 mm (2.8 in)
1966	40.0 mm (1.6 in)
1967	39.6 mm (1.6 in)
1968	33.6 mm (1.3 in)
1969	24.8 mm (1.0 in)
1970	41.4 mm (1.6 in)
1971	40.8 mm (1.6 in)
1972	30.1 mm (1.2 in)
1973	37.2 mm (1.5 in)
1974	43.5 mm (1.7 in)
1975	37.9 mm (1.5 in)
1976	45.0 mm (1.8 in)
1977	61.6 mm (2.4 in)
1978	44.0 mm (1.7 in)
1979	30.5 mm (1.2 in)
1980	64.5 mm (2.5 in)
1981	33.6 mm (1.3 in)
1982	52.9 mm (2.1 in)
1983	40.4 mm (1.6 in)
1984	43.8 mm (1.7 in)
1985	30.5 mm (1.2 in)
1986	40.7 mm (1.6 in)
1987	37.3 mm (1.5 in)
1988	70.9 mm (2.8 in)
1989	35.5 mm (1.4 in)
1990	59.3 mm (2.3 in)
1991	41.0 mm (1.6 in)
1992	51.3 mm (2.0 in)
1993	29.6 mm (1.2 in)
1994	25.8 mm (1.0 in)
1995	36.0 mm (1.4 in)
1996	26.8 mm (1.1 in)
1997	38.8 mm (1.5 in)
1998	39.8 mm (1.6 in)
1999	36.0 mm (1.4 in)
2000	70.6 mm (2.8 in)
2001	58.5 mm (2.3 in)
2002	35.5 mm (1.4 in)
2003	61.0 mm (2.4 in)
2004	36.9 mm (1.5 in)
2005	48.5 mm (1.9 in)
2006	45.0 mm (1.8 in)
2007	28.4 mm (1.1 in)
2008	36.5 mm (1.4 in)
2009	47.7 mm (1.9 in)
2010	29.7 mm (1.2 in)
2011	55.3 mm (2.2 in)
2012	42.6 mm (1.7 in)
2013	69.1 mm (2.7 in)
2014	44.4 mm (1.7 in)
2015	38.2 mm (1.5 in)
2016	18.4 mm (0.7 in)
2017	45.8 mm (1.8 in)
2018	45.1 mm (1.8 in)
2019	34.1 mm (1.3 in)
2020	50.2 mm (2.0 in)
2021	45.1 mm (1.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Ullanger, 1960 to 2021. The record is 151.5 mm (6.0 in) in 2001, marked on the chart; the median year is 70.6 mm (2.8 in).

Wettest five days (Rx5day) at Ullanger by year
Year	Wettest five days (Rx5day)
1960	79.2 mm (3.1 in)
1961	87.2 mm (3.4 in)
1962	73.7 mm (2.9 in)
1963	63.8 mm (2.5 in)
1964	67.2 mm (2.6 in)
1965	128.8 mm (5.1 in)
1966	81.5 mm (3.2 in)
1967	95.3 mm (3.8 in)
1968	70.0 mm (2.8 in)
1969	66.2 mm (2.6 in)
1970	85.3 mm (3.4 in)
1971	56.2 mm (2.2 in)
1972	44.0 mm (1.7 in)
1973	63.6 mm (2.5 in)
1974	81.5 mm (3.2 in)
1975	59.3 mm (2.3 in)
1976	77.4 mm (3.0 in)
1977	98.6 mm (3.9 in)
1978	51.6 mm (2.0 in)
1979	54.0 mm (2.1 in)
1980	93.2 mm (3.7 in)
1981	57.1 mm (2.2 in)
1982	56.8 mm (2.2 in)
1983	101.1 mm (4.0 in)
1984	76.1 mm (3.0 in)
1985	61.7 mm (2.4 in)
1986	52.0 mm (2.0 in)
1987	90.0 mm (3.5 in)
1988	102.8 mm (4.0 in)
1989	90.5 mm (3.6 in)
1990	112.4 mm (4.4 in)
1991	66.8 mm (2.6 in)
1992	107.1 mm (4.2 in)
1993	73.0 mm (2.9 in)
1994	59.0 mm (2.3 in)
1995	62.8 mm (2.5 in)
1996	67.1 mm (2.6 in)
1997	64.2 mm (2.5 in)
1998	117.5 mm (4.6 in)
1999	63.4 mm (2.5 in)
2000	101.2 mm (4.0 in)
2001	151.5 mm (6.0 in)
2002	63.1 mm (2.5 in)
2003	109.0 mm (4.3 in)
2004	65.6 mm (2.6 in)
2005	91.7 mm (3.6 in)
2006	86.3 mm (3.4 in)
2007	44.2 mm (1.7 in)
2008	60.7 mm (2.4 in)
2009	88.8 mm (3.5 in)
2010	35.3 mm (1.4 in)
2011	99.9 mm (3.9 in)
2012	60.6 mm (2.4 in)
2013	130.3 mm (5.1 in)
2014	71.9 mm (2.8 in)
2015	58.0 mm (2.3 in)
2016	43.9 mm (1.7 in)
2017	66.7 mm (2.6 in)
2018	62.8 mm (2.5 in)
2019	56.2 mm (2.2 in)
2020	78.8 mm (3.1 in)
2021	71.1 mm (2.8 in)

Longest dry spell (CDD)

The longest dry spell of the year at Ullanger, 1960 to 2021. The record is 55 days in 2008, marked on the chart; the median year is 22 days.

Longest dry spell (CDD) at Ullanger by year
Year	Longest dry spell (CDD)
1960	20 days
1961	20 days
1962	15 days
1963	14 days
1964	33 days
1965	26 days
1966	21 days
1967	14 days
1968	20 days
1969	34 days
1970	23 days
1971	20 days
1972	20 days
1973	32 days
1974	32 days
1975	18 days
1976	33 days
1977	18 days
1978	21 days
1979	18 days
1980	17 days
1981	22 days
1982	16 days
1983	22 days
1984	20 days
1985	18 days
1986	22 days
1987	24 days
1988	19 days
1989	22 days
1990	24 days
1991	23 days
1992	23 days
1993	18 days
1994	29 days
1995	23 days
1996	21 days
1997	22 days
1998	16 days
1999	24 days
2000	20 days
2001	16 days
2002	21 days
2003	48 days
2004	17 days
2005	19 days
2006	19 days
2007	30 days
2008	55 days
2009	21 days
2010	22 days
2011	18 days
2012	31 days
2013	24 days
2014	22 days
2015	26 days
2016	23 days
2017	22 days
2018	34 days
2019	24 days
2020	15 days
2021	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

35 years with a frost

Across 35 years with a frost, the median last spring frost at Ullanger falls on 30 May and the median first autumn frost on 14 September, which leaves a median of 108 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 Ullanger
Measure	Median, all years	Earliest period	Recent period (1966 to 1997)	Recent against earliest	Fitted trend
Last spring frost	30 May	n/a	31 May	n/a	-0.1 days per decade
First autumn frost	14 September	n/a	14 September	n/a	-1.7 days per decade
Growing days	108 days	n/a	107 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

58 years, 1961 to 2020

A day with at least 40.6 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 81.5 mm (3.2 in) of rain is expected about once in 100 years.

Rainfall return levels at Ullanger: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	40.6 mm (1.6 in)
5 years	51.4 mm (2.0 in)
10 years	58.6 mm (2.3 in)
25 years	67.8 mm (2.7 in)
50 years	74.7 mm (2.9 in)
100 years	81.5 mm (3.2 in)	Longer than the 58 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, 58 years of values from 1961 to 2020.

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: 70.9 mm (2.8 in) in 1988; 70.7 mm (2.8 in) in 1965; 70.6 mm (2.8 in) in 2000.

Download the Data

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