Nyckleby Weather Records (SWE00138858)

Record envelope, standing records and threshold days for Nyckleby (SWE00138858), Sweden, with 32 years of record.

Key Facts for Nyckleby

Nyckleby (SWE00138858) is a weather station in Sweden at 59.30 latitude and 17.72 longitude, 25 m (82 ft) above sea level.
The station reports from 1945 to 1976, 32 years of record.
1,464 records set at Nyckleby still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Nyckleby set a daily record precipitation of 15.0 mm (0.6 in) on 20 June 1976.

About the Station

Location: Sweden, 59.30 latitude, 17.72 longitude.
Elevation: 25 m (82 ft).
Period of record: 1945 to 1976, 32 years.
Eligible elements: 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 Nyckleby. 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 Nyckleby, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	9.3 C (48.7 F)	-26.4 C (-15.5 F)	n/a	n/a
Feb	10.5 C (50.9 F)	-30.5 C (-22.9 F)	n/a	n/a
Mar	18.0 C (64.4 F)	-24.1 C (-11.4 F)	n/a	n/a
Apr	21.1 C (70.0 F)	-13.1 C (8.4 F)	n/a	n/a
May	28.3 C (82.9 F)	-6.3 C (20.7 F)	n/a	n/a
Jun	34.5 C (94.1 F)	-1.3 C (29.7 F)	n/a	n/a
Jul	33.5 C (92.3 F)	3.9 C (39.0 F)	n/a	n/a
Aug	31.8 C (89.2 F)	2.2 C (36.0 F)	n/a	n/a
Sep	28.3 C (82.9 F)	-2.8 C (27.0 F)	n/a	n/a
Oct	19.5 C (67.1 F)	-8.0 C (17.6 F)	n/a	n/a
Nov	13.2 C (55.8 F)	-14.6 C (5.7 F)	n/a	n/a
Dec	12.5 C (54.5 F)	-20.6 C (-5.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Nyckleby still stand. 1947 holds the most, with 86.

Standing records at Nyckleby by the year they were set
Year set	Standing records
1945	45
1946	35
1947	86
1948	60
1949	70
1950	27
1951	35
1952	53
1953	49
1954	42
1955	80
1956	57
1957	51
1958	50
1959	54
1960	36
1961	82
1962	48
1963	37
1964	36
1965	65
1966	62
1967	37
1968	75
1969	47
1970	57
1971	77
1972	11

Wettest Day of Each Month

Aug: 53.5 mm (2.1 in)

The wettest day on record for each calendar month at Nyckleby. The most was 53.5 mm (2.1 in) on 27 August 1969.

Record daily precipitation for each month at Nyckleby
Month	Record daily precipitation (mm)	Date
Jan	20.2 mm (0.8 in)	15 January 1974
Feb	20.8 mm (0.8 in)	12 February 1973
Mar	25.1 mm (1.0 in)	21 March 1974
Apr	23.7 mm (0.9 in)	7 April 1948
May	31.5 mm (1.2 in)	17 May 1958
Jun	47.4 mm (1.9 in)	26 June 1963
Jul	45.8 mm (1.8 in)	7 July 1968
Aug	53.5 mm (2.1 in)	27 August 1969
Sep	26.7 mm (1.1 in)	12 September 1962
Oct	34.8 mm (1.4 in)	31 October 1968
Nov	22.9 mm (0.9 in)	23 November 1969
Dec	19.8 mm (0.8 in)	17 December 1949

Period of Record Coverage

1945 to 1972

28 years of record at Nyckleby, 1945 to 1972. 1 years have data for under 90 percent of days and are left out of rankings: 1972.

Days with data per year at Nyckleby
Year	Days with data	Share of year	Complete
1945	364	100%	Yes
1946	334	92%	Yes
1947	365	100%	Yes
1948	366	100%	Yes
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	364	100%	Yes
1956	366	100%	Yes
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	182	50%	No

Latest Records

Latest records at Nyckleby
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 June 1976	Nyckleby, SE	daily rain	15.0 mm (0.6 in)	4.4 mm (0.17 in)	28 years	19 of 100 (Routine)
26 April 1976	Nyckleby, SE	daily rain	13.3 mm (0.5 in)	7.2 mm (0.28 in)	29 years	20 of 100 (Routine)
16 January 1976	Nyckleby, SE	daily rain	5.0 mm (0.20 in)	0.5 mm (0.02 in)	20 years	10 of 100 (Routine)
23 December 1975	Nyckleby, SE	daily rain	7.7 mm (0.30 in)	2.2 mm (0.09 in)	8 years	11 of 100 (Routine)
2 December 1975	Nyckleby, SE	daily rain	10.8 mm (0.4 in)	4.2 mm (0.17 in)	22 years	20 of 100 (Routine)
29 November 1975	Nyckleby, SE	daily rain (Tie)	9.4 mm (0.37 in)	tie	28 years	2 of 100 (Routine)
16 August 1975	Nyckleby, SE	daily rain	15.3 mm (0.6 in)	4.0 mm (0.16 in)	6 years	11 of 100 (Routine)
1 June 1975	Nyckleby, SE	daily rain	5.2 mm (0.20 in)	0.5 mm (0.02 in)	21 years	10 of 100 (Routine)
22 May 1975	Nyckleby, SE	daily rain	2.4 mm (0.09 in)	0.2 mm (0.01 in)	24 years	10 of 100 (Routine)
12 May 1975	Nyckleby, SE	daily rain	15.7 mm (0.6 in)	12.6 mm (0.5 in)	16 years	20 of 100 (Routine)
29 March 1975	Nyckleby, SE	daily rain	12.2 mm (0.5 in)	1.7 mm (0.07 in)	16 years	12 of 100 (Routine)
15 March 1975	Nyckleby, SE	daily rain	12.9 mm (0.5 in)	12.1 mm (0.5 in)	24 years	20 of 100 (Routine)

Climate Trend

26 complete years, 1945 to 1971

One stripe for each of 26 complete years at Nyckleby, 1945 to 1971. Blue stripes are years cooler than the station's own mean of 5.9 C (42.7 F); red stripes are warmer. The coolest year was 1956, at 4.8 C (40.7 F), and the warmest was 1953, at 7.5 C (45.5 F). The strongest colour marks a difference of 1.6 C (2.9 F).

Annual mean temperature at Nyckleby as warming stripes, 1945 to 1971
Year	Annual mean temperature	Difference from the station mean
1945	6.3 C	+0.32 C
1947	5.1 C	-0.86 C
1948	5.9 C	-0.02 C
1949	7.1 C	+1.10 C
1950	6.5 C	+0.58 C
1951	6.6 C	+0.67 C
1952	5.3 C	-0.62 C
1953	7.5 C	+1.55 C
1954	6.0 C	+0.06 C
1955	5.6 C	-0.32 C
1956	4.8 C	-1.14 C
1957	6.3 C	+0.38 C
1958	5.6 C	-0.36 C
1959	7.3 C	+1.33 C
1960	6.2 C	+0.21 C
1961	7.1 C	+1.16 C
1962	5.0 C	-0.95 C
1963	5.2 C	-0.76 C
1964	6.1 C	+0.17 C
1965	5.1 C	-0.85 C
1966	5.0 C	-1.00 C
1967	6.5 C	+0.58 C
1968	5.8 C	-0.13 C
1969	5.5 C	-0.41 C
1970	4.8 C	-1.14 C
1971	6.4 C	+0.44 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

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

1945 to 1976

Yearly extremes at Nyckleby: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	34.5 C (94.1 F)	1947	29.1 C (84.3 F)	28
Coldest night (TNn)	-30.5 C (-22.9 F)	1966	-21.6 C (-7.0 F)	28
Wettest day (Rx1day)	53.5 mm (2.1 in)	1969	25.9 mm (1.0 in)	32
Wettest five days (Rx5day)	81.1 mm (3.2 in)	1969	46.8 mm (1.8 in)	32
Longest dry spell (CDD)	56 days	1964	23 days	32

Hottest day (TXx)

The hottest day of the year at Nyckleby, 1945 to 1976. The record is 34.5 C (94.1 F) in 1947, marked on the chart; the median year is 29.1 C (84.3 F).

Hottest day (TXx) at Nyckleby by year
Year	Hottest day (TXx)
1945	33.3 C (91.9 F)
1946	27.5 C (81.5 F)
1947	34.5 C (94.1 F)
1948	33.5 C (92.3 F)
1949	29.1 C (84.4 F)
1950	28.1 C (82.6 F)
1951	28.4 C (83.1 F)
1952	28.3 C (82.9 F)
1953	30.5 C (86.9 F)
1954	29.0 C (84.2 F)
1955	33.0 C (91.4 F)
1956	31.8 C (89.2 F)
1957	29.5 C (85.1 F)
1958	28.9 C (84.0 F)
1959	30.8 C (87.4 F)
1960	27.3 C (81.1 F)
1961	28.4 C (83.1 F)
1962	25.5 C (77.9 F)
1963	27.8 C (82.0 F)
1964	27.6 C (81.7 F)
1965	24.8 C (76.6 F)
1966	29.6 C (85.3 F)
1967	28.5 C (83.3 F)
1968	31.1 C (88.0 F)
1969	30.7 C (87.3 F)
1970	31.6 C (88.9 F)
1971	28.4 C (83.1 F)
1972	31.0 C (87.8 F)
1973	n/a
1974	n/a
1975	n/a
1976	n/a

Coldest night (TNn)

The coldest night of the year at Nyckleby, 1945 to 1976. The record is -30.5 C (-22.9 F) in 1966, marked on the chart; the median year is -21.6 C (-7.0 F).

Coldest night (TNn) at Nyckleby by year
Year	Coldest night (TNn)
1945	-17.0 C (1.4 F)
1946	-24.1 C (-11.4 F)
1947	-24.4 C (-11.9 F)
1948	-21.8 C (-7.2 F)
1949	-16.4 C (2.5 F)
1950	-21.5 C (-6.7 F)
1951	-23.7 C (-10.7 F)
1952	-17.6 C (0.3 F)
1953	-18.8 C (-1.8 F)
1954	-23.5 C (-10.3 F)
1955	-20.2 C (-4.4 F)
1956	-25.8 C (-14.4 F)
1957	-20.3 C (-4.5 F)
1958	-23.0 C (-9.4 F)
1959	-17.5 C (0.5 F)
1960	-19.3 C (-2.7 F)
1961	-18.9 C (-2.0 F)
1962	-20.0 C (-4.0 F)
1963	-27.6 C (-17.7 F)
1964	-18.5 C (-1.3 F)
1965	-21.4 C (-6.5 F)
1966	-30.5 C (-22.9 F)
1967	-22.7 C (-8.9 F)
1968	-23.7 C (-10.7 F)
1969	-24.1 C (-11.4 F)
1970	-26.8 C (-16.2 F)
1971	-22.2 C (-8.0 F)
1972	-15.2 C (4.6 F)
1973	n/a
1974	n/a
1975	n/a
1976	n/a

Wettest day (Rx1day)

The wettest day of the year at Nyckleby, 1945 to 1976. The record is 53.5 mm (2.1 in) in 1969, marked on the chart; the median year is 25.9 mm (1.0 in).

Wettest day (Rx1day) at Nyckleby by year
Year	Wettest day (Rx1day)
1945	28.0 mm (1.1 in)
1946	25.2 mm (1.0 in)
1947	29.6 mm (1.2 in)
1948	29.6 mm (1.2 in)
1949	27.3 mm (1.1 in)
1950	15.7 mm (0.6 in)
1951	17.1 mm (0.7 in)
1952	26.3 mm (1.0 in)
1953	25.8 mm (1.0 in)
1954	27.3 mm (1.1 in)
1955	16.9 mm (0.7 in)
1956	27.0 mm (1.1 in)
1957	19.7 mm (0.8 in)
1958	31.5 mm (1.2 in)
1959	20.9 mm (0.8 in)
1960	35.1 mm (1.4 in)
1961	20.2 mm (0.8 in)
1962	41.5 mm (1.6 in)
1963	47.4 mm (1.9 in)
1964	22.2 mm (0.9 in)
1965	20.3 mm (0.8 in)
1966	19.1 mm (0.8 in)
1967	26.0 mm (1.0 in)
1968	45.8 mm (1.8 in)
1969	53.5 mm (2.1 in)
1970	13.0 mm (0.5 in)
1971	28.3 mm (1.1 in)
1972	22.0 mm (0.9 in)
1973	21.5 mm (0.8 in)
1974	28.2 mm (1.1 in)
1975	21.5 mm (0.8 in)
1976	19.9 mm (0.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Nyckleby, 1945 to 1976. The record is 81.1 mm (3.2 in) in 1969, marked on the chart; the median year is 46.8 mm (1.8 in).

Wettest five days (Rx5day) at Nyckleby by year
Year	Wettest five days (Rx5day)
1945	61.5 mm (2.4 in)
1946	55.6 mm (2.2 in)
1947	38.9 mm (1.5 in)
1948	48.6 mm (1.9 in)
1949	70.4 mm (2.8 in)
1950	32.6 mm (1.3 in)
1951	42.0 mm (1.7 in)
1952	51.6 mm (2.0 in)
1953	44.0 mm (1.7 in)
1954	42.8 mm (1.7 in)
1955	43.4 mm (1.7 in)
1956	42.2 mm (1.7 in)
1957	33.5 mm (1.3 in)
1958	46.9 mm (1.8 in)
1959	52.1 mm (2.1 in)
1960	64.1 mm (2.5 in)
1961	46.6 mm (1.8 in)
1962	57.5 mm (2.3 in)
1963	55.1 mm (2.2 in)
1964	39.8 mm (1.6 in)
1965	34.5 mm (1.4 in)
1966	51.7 mm (2.0 in)
1967	62.0 mm (2.4 in)
1968	69.0 mm (2.7 in)
1969	81.1 mm (3.2 in)
1970	30.2 mm (1.2 in)
1971	49.5 mm (1.9 in)
1972	41.1 mm (1.6 in)
1973	36.8 mm (1.4 in)
1974	51.3 mm (2.0 in)
1975	45.9 mm (1.8 in)
1976	22.0 mm (0.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at Nyckleby, 1945 to 1976. The record is 56 days in 1964, marked on the chart; the median year is 23 days.

Longest dry spell (CDD) at Nyckleby by year
Year	Longest dry spell (CDD)
1945	27 days
1946	19 days
1947	32 days
1948	36 days
1949	17 days
1950	20 days
1951	35 days
1952	16 days
1953	30 days
1954	35 days
1955	55 days
1956	30 days
1957	19 days
1958	17 days
1959	26 days
1960	27 days
1961	21 days
1962	35 days
1963	17 days
1964	56 days
1965	26 days
1966	17 days
1967	14 days
1968	21 days
1969	45 days
1970	23 days
1971	20 days
1972	22 days
1973	21 days
1974	40 days
1975	19 days
1976	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

26 years with a frost

Across 26 years with a frost, the median last spring frost at Nyckleby falls on 18 May and the median first autumn frost on 1 October, which leaves a median of 139 days between them.

Fitted over all years, the growing season changes by +0.9 days per decade at this station.

Frost dates and growing season at Nyckleby
Measure	Median, all years	Earliest period	Recent period (1945 to 1971)	Recent against earliest	Fitted trend
Last spring frost	18 May	n/a	18 May	n/a	-2.0 days per decade
First autumn frost	1 October	n/a	1 October	n/a	-1.1 days per decade
Growing days	139 days	n/a	139 days	n/a	+0.9 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

31 years, 1945 to 1975

A day with at least 24.8 mm (1.0 in) of rain is expected about once in 2 years. A day with at least 61.3 mm (2.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Nyckleby: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	24.8 mm (1.0 in)
5 years	32.9 mm (1.3 in)
10 years	38.9 mm (1.5 in)
25 years	47.2 mm (1.9 in)
50 years	54.0 mm (2.1 in)	Longer than the 31 years of record
100 years	61.3 mm (2.4 in)	Longer than the 31 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, 31 years of values from 1945 to 1975.

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: 53.5 mm (2.1 in) in 1969; 47.4 mm (1.9 in) in 1963; 45.8 mm (1.8 in) in 1968.

Download the Data

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