Nykopings_Flygplats Weather Records (SWE00138630)

Record envelope, standing records and threshold days for Nykopings_Flygplats (SWE00138630), Sweden, with 36 years of record.

Key Facts for Nykopings_Flygplats

Nykopings_Flygplats (SWE00138630) is a weather station in Sweden at 58.78 latitude and 16.92 longitude, 42 m (138 ft) above sea level.
The station reports from 1944 to 1979, 36 years of record.
1,464 records set at Nykopings_Flygplats still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Nykopings_Flygplats set a daily record high minimum temperature of 16.9 C (62.4 F) on 25 June 1979.

About the Station

Location: Sweden, 58.78 latitude, 16.92 longitude.
Elevation: 42 m (138 ft).
Period of record: 1944 to 1979, 36 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 Nykopings_Flygplats. 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 Nykopings_Flygplats, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	10.0 C (50.0 F)	-30.0 C (-22.0 F)	n/a	n/a
Feb	11.5 C (52.7 F)	-28.8 C (-19.8 F)	n/a	n/a
Mar	18.5 C (65.3 F)	-25.2 C (-13.4 F)	n/a	n/a
Apr	22.0 C (71.6 F)	-16.8 C (1.8 F)	n/a	n/a
May	27.4 C (81.3 F)	-5.7 C (21.7 F)	n/a	n/a
Jun	33.0 C (91.4 F)	-2.4 C (27.7 F)	n/a	n/a
Jul	31.8 C (89.2 F)	2.1 C (35.8 F)	n/a	n/a
Aug	34.5 C (94.1 F)	1.4 C (34.5 F)	n/a	n/a
Sep	26.4 C (79.5 F)	-5.7 C (21.7 F)	n/a	n/a
Oct	20.4 C (68.7 F)	-10.6 C (12.9 F)	n/a	n/a
Nov	14.0 C (57.2 F)	-18.6 C (-1.5 F)	n/a	n/a
Dec	12.5 C (54.5 F)	-25.0 C (-13.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Nykopings_Flygplats still stand. 1947 holds the most, with 72.

Standing records at Nykopings_Flygplats by the year they were set
Year set	Standing records
1944	28
1945	35
1946	18
1947	72
1948	33
1949	64
1950	28
1951	25
1952	39
1953	42
1954	29
1955	53
1956	41
1957	39
1958	34
1959	39
1960	16
1961	53
1962	37
1963	23
1964	32
1965	46
1966	56
1967	32
1968	60
1969	40
1970	42
1971	60
1972	30
1973	57
1974	25
1975	58
1976	44
1977	48
1978	60
1979	26

All-Time Record Progression

4 new records

4 all-time records were set at Nykopings_Flygplats between 6 August 1975 and 28 January 1979. Each dot is a new record.

When Nykopings_Flygplats set new all-time records
Date	Kind	Detail
1975-08-06	Record high maximum temperature	Record high maximum temperature 34.1 C (93.4 F)
1975-08-07	Record high maximum temperature	Record high maximum temperature 34.4 C (93.9 F)
1975-08-08	Record high maximum temperature	Record high maximum temperature 34.5 C (94.1 F)
1979-01-28	Record low minimum temperature	Record low minimum temperature -30.0 C (-22.0 F)

Wettest Day of Each Month

Aug: 58.0 mm (2.3 in)

The wettest day on record for each calendar month at Nykopings_Flygplats. The most was 58.0 mm (2.3 in) on 9 August 1951.

Record daily precipitation for each month at Nykopings_Flygplats
Month	Record daily precipitation (mm)	Date
Jan	22.5 mm (0.9 in)	12 January 1979
Feb	17.0 mm (0.7 in)	19 February 1977
Mar	27.9 mm (1.1 in)	16 March 1948
Apr	20.3 mm (0.8 in)	24 April 1979
May	39.2 mm (1.5 in)	17 May 1958
Jun	35.3 mm (1.4 in)	9 June 1946
Jul	46.2 mm (1.8 in)	30 July 1965
Aug	58.0 mm (2.3 in)	9 August 1951
Sep	33.0 mm (1.3 in)	1 September 1946
Oct	37.0 mm (1.5 in)	2 October 1974
Nov	38.4 mm (1.5 in)	11 November 1961
Dec	31.6 mm (1.2 in)	3 December 1976

Period of Record Coverage

1944 to 1979

36 years of record at Nykopings_Flygplats, 1944 to 1979. 1 years have data for under 90 percent of days and are left out of rankings: 1979.

Days with data per year at Nykopings_Flygplats
Year	Days with data	Share of year	Complete
1944	365	100%	Yes
1945	365	100%	Yes
1946	361	99%	Yes
1947	364	100%	Yes
1948	364	99%	Yes
1949	364	100%	Yes
1950	365	100%	Yes
1951	365	100%	Yes
1952	365	100%	Yes
1953	362	99%	Yes
1954	364	100%	Yes
1955	365	100%	Yes
1956	365	100%	Yes
1957	365	100%	Yes
1958	364	100%	Yes
1959	359	98%	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	364	100%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	365	100%	Yes
1978	365	100%	Yes
1979	181	50%	No

Latest Records

Latest records at Nykopings_Flygplats
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
25 June 1979	Nykopings_Flygplats, SE	daily high min	16.9 C (62.4 F)	2.9 C (5.2 F)	28 years	19 of 100 (Routine)
24 June 1979	Nykopings_Flygplats, SE	daily high min	14.0 C (57.2 F)	0.6 C (1.1 F)	32 years	13 of 100 (Routine)
8 June 1979	Nykopings_Flygplats, SE	daily rain	19.7 mm (0.8 in)	9.0 mm (0.35 in)	14 years	20 of 100 (Routine)
7 June 1979	Nykopings_Flygplats, SE	daily high max	28.8 C (83.8 F)	0.8 C (1.4 F)	18 years	10 of 100 (Routine)
2 June 1979	Nykopings_Flygplats, SE	daily high min	12.5 C (54.5 F)	2.1 C (3.8 F)	32 years	18 of 100 (Routine)
2 June 1979	Nykopings_Flygplats, SE	daily high max	29.0 C (84.2 F)	4.2 C (7.6 F)	8 years	16 of 100 (Routine)
19 May 1979	Nykopings_Flygplats, SE	daily high min	9.7 C (49.5 F)	0.3 C (0.5 F)	12 years	6 of 100 (Routine)
18 May 1979	Nykopings_Flygplats, SE	daily high min	10.9 C (51.6 F)	1.1 C (2.0 F)	8 years	8 of 100 (Routine)
16 May 1979	Nykopings_Flygplats, SE	daily high max	24.8 C (76.6 F)	2.3 C (4.1 F)	18 years	13 of 100 (Routine)
15 May 1979	Nykopings_Flygplats, SE	daily high min	11.4 C (52.5 F)	1.0 C (1.8 F)	32 years	14 of 100 (Routine)
14 May 1979	Nykopings_Flygplats, SE	daily high min	10.1 C (50.2 F)	0.2 C (0.4 F)	32 years	12 of 100 (Routine)
9 May 1979	Nykopings_Flygplats, SE	daily rain	5.9 mm (0.23 in)	0.3 mm (0.01 in)	20 years	9 of 100 (Routine)
24 April 1979	Nykopings_Flygplats, SE	monthly rain	20.3 mm (0.8 in)	1.2 mm (0.05 in)	21 years	20 of 100 (Routine)
13 April 1979	Nykopings_Flygplats, SE	daily rain	7.0 mm (0.28 in)	0.2 mm (0.01 in)	29 years	11 of 100 (Routine)
12 April 1979	Nykopings_Flygplats, SE	daily high max	15.1 C (59.2 F)	0.3 C (0.5 F)	26 years	11 of 100 (Routine)
18 March 1979	Nykopings_Flygplats, SE	daily low min	-14.8 C (5.4 F)	0.7 C (1.3 F)	16 years	9 of 100 (Routine)
5 March 1979	Nykopings_Flygplats, SE	daily high min	1.6 C (34.9 F)	0.1 C (0.2 F)	20 years	9 of 100 (Routine)
16 February 1979	Nykopings_Flygplats, SE	daily low min	-28.0 C (-18.4 F)	4.8 C (8.6 F)	0 years	10 of 100 (Routine)
14 February 1979	Nykopings_Flygplats, SE	daily low max	-15.2 C (4.6 F)	2.0 C (3.6 F)	9 years	9 of 100 (Routine)
6 February 1979	Nykopings_Flygplats, SE	daily low min (Tie)	-18.4 C (-1.1 F)	tie	32 years	3 of 100 (Routine)

Climate Trend

32 complete years, 1944 to 1978

One stripe for each of 32 complete years at Nykopings_Flygplats, 1944 to 1978. Blue stripes are years cooler than the station's own mean of 5.7 C (42.2 F); red stripes are warmer. The coolest year was 1970, at 4.3 C (39.7 F), and the warmest was 1975, at 7.3 C (45.1 F). The strongest colour marks a difference of 1.7 C (3.1 F).

Annual mean temperature at Nykopings_Flygplats as warming stripes, 1944 to 1978
Year	Annual mean temperature	Difference from the station mean
1944	6.2 C	+0.58 C
1945	6.4 C	+0.70 C
1949	7.2 C	+1.51 C
1950	6.1 C	+0.42 C
1951	5.9 C	+0.24 C
1952	4.8 C	-0.83 C
1953	7.0 C	+1.32 C
1954	5.5 C	-0.18 C
1955	5.1 C	-0.56 C
1956	4.4 C	-1.23 C
1957	5.9 C	+0.22 C
1958	4.9 C	-0.78 C
1959	6.9 C	+1.24 C
1960	5.7 C	+0.08 C
1961	6.7 C	+1.05 C
1962	4.6 C	-1.09 C
1963	4.6 C	-1.10 C
1964	5.6 C	-0.09 C
1965	4.5 C	-1.18 C
1966	4.5 C	-1.15 C
1967	6.1 C	+0.44 C
1968	5.4 C	-0.27 C
1969	4.9 C	-0.75 C
1970	4.3 C	-1.35 C
1971	5.8 C	+0.18 C
1972	6.4 C	+0.76 C
1973	6.1 C	+0.48 C
1974	6.4 C	+0.78 C
1975	7.3 C	+1.62 C
1976	5.3 C	-0.40 C
1977	5.5 C	-0.13 C
1978	5.1 C	-0.53 C

The fitted trend in annual mean temperature here over 1944 to 1978 is -0.1 C (-0.5 to 0.2) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.2 F (-0.8 to 0.3) per decade. The slope is a straight line fitted to 32 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Nykopings_Flygplats
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.1 C (-0.5 to 0.2) per decade	-0.2 F (-0.8 to 0.3) per decade	1944 to 1978	32	Not clearly different from zero
Mean daily maximum	-0.3 C (-0.6 to 0.1) per decade	-0.5 F (-1.1 to 0.1) per decade	1944 to 1978	32	Not clearly different from zero
Mean daily minimum	0.0 C (-0.3 to 0.4) per decade	0.0 F (-0.6 to 0.6) per decade	1944 to 1978	32	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

1944 to 1979

Yearly extremes at Nykopings_Flygplats: 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)	1975	28.3 C (82.9 F)	36
Coldest night (TNn)	-30.0 C (-22.0 F)	1979	-22.0 C (-7.7 F)	36
Wettest day (Rx1day)	58.0 mm (2.3 in)	1951	28.5 mm (1.1 in)	36
Wettest five days (Rx5day)	110.2 mm (4.3 in)	1951	51.8 mm (2.0 in)	36
Longest dry spell (CDD)	55 days	1964	22 days	36

Hottest day (TXx)

The hottest day of the year at Nykopings_Flygplats, 1944 to 1979. The record is 34.5 C (94.1 F) in 1975, marked on the chart; the median year is 28.3 C (82.9 F).

Hottest day (TXx) at Nykopings_Flygplats by year
Year	Hottest day (TXx)
1944	30.1 C (86.2 F)
1945	31.8 C (89.2 F)
1946	27.1 C (80.8 F)
1947	33.0 C (91.4 F)
1948	31.6 C (88.9 F)
1949	30.0 C (86.0 F)
1950	27.0 C (80.6 F)
1951	26.0 C (78.8 F)
1952	26.0 C (78.8 F)
1953	29.0 C (84.2 F)
1954	27.2 C (81.0 F)
1955	31.0 C (87.8 F)
1956	27.0 C (80.6 F)
1957	28.8 C (83.8 F)
1958	27.9 C (82.2 F)
1959	30.0 C (86.0 F)
1960	28.0 C (82.4 F)
1961	25.3 C (77.5 F)
1962	24.5 C (76.1 F)
1963	27.1 C (80.8 F)
1964	27.3 C (81.1 F)
1965	22.8 C (73.0 F)
1966	27.2 C (81.0 F)
1967	25.9 C (78.6 F)
1968	29.4 C (84.9 F)
1969	30.0 C (86.0 F)
1970	30.9 C (87.6 F)
1971	27.2 C (81.0 F)
1972	29.0 C (84.2 F)
1973	28.4 C (83.1 F)
1974	26.6 C (79.9 F)
1975	34.5 C (94.1 F)
1976	30.0 C (86.0 F)
1977	28.6 C (83.5 F)
1978	28.1 C (82.6 F)
1979	29.0 C (84.2 F)

Coldest night (TNn)

The coldest night of the year at Nykopings_Flygplats, 1944 to 1979. The record is -30.0 C (-22.0 F) in 1979, marked on the chart; the median year is -22.0 C (-7.7 F).

Coldest night (TNn) at Nykopings_Flygplats by year
Year	Coldest night (TNn)
1944	-19.8 C (-3.6 F)
1945	-22.4 C (-8.3 F)
1946	-25.0 C (-13.0 F)
1947	-26.1 C (-15.0 F)
1948	-18.0 C (-0.4 F)
1949	-16.0 C (3.2 F)
1950	-22.0 C (-7.6 F)
1951	-24.2 C (-11.6 F)
1952	-22.1 C (-7.8 F)
1953	-23.0 C (-9.4 F)
1954	-25.7 C (-14.3 F)
1955	-25.0 C (-13.0 F)
1956	-25.6 C (-14.1 F)
1957	-17.4 C (0.7 F)
1958	-25.0 C (-13.0 F)
1959	-21.2 C (-6.2 F)
1960	-21.0 C (-5.8 F)
1961	-16.2 C (2.8 F)
1962	-22.9 C (-9.2 F)
1963	-28.8 C (-19.8 F)
1964	-19.9 C (-3.8 F)
1965	-21.5 C (-6.7 F)
1966	-28.8 C (-19.8 F)
1967	-20.5 C (-4.9 F)
1968	-22.6 C (-8.7 F)
1969	-25.2 C (-13.4 F)
1970	-27.0 C (-16.6 F)
1971	-19.7 C (-3.5 F)
1972	-16.4 C (2.5 F)
1973	-21.6 C (-6.9 F)
1974	-16.8 C (1.8 F)
1975	-16.1 C (3.0 F)
1976	-21.7 C (-7.1 F)
1977	-19.9 C (-3.8 F)
1978	-23.2 C (-9.8 F)
1979	-30.0 C (-22.0 F)

Wettest day (Rx1day)

The wettest day of the year at Nykopings_Flygplats, 1944 to 1979. The record is 58.0 mm (2.3 in) in 1951, marked on the chart; the median year is 28.5 mm (1.1 in).

Wettest day (Rx1day) at Nykopings_Flygplats by year
Year	Wettest day (Rx1day)
1944	25.9 mm (1.0 in)
1945	27.0 mm (1.1 in)
1946	35.3 mm (1.4 in)
1947	18.2 mm (0.7 in)
1948	27.9 mm (1.1 in)
1949	29.7 mm (1.2 in)
1950	27.6 mm (1.1 in)
1951	58.0 mm (2.3 in)
1952	28.5 mm (1.1 in)
1953	20.0 mm (0.8 in)
1954	33.4 mm (1.3 in)
1955	17.2 mm (0.7 in)
1956	22.7 mm (0.9 in)
1957	22.2 mm (0.9 in)
1958	39.2 mm (1.5 in)
1959	22.2 mm (0.9 in)
1960	52.0 mm (2.0 in)
1961	38.4 mm (1.5 in)
1962	28.4 mm (1.1 in)
1963	38.5 mm (1.5 in)
1964	29.2 mm (1.1 in)
1965	46.2 mm (1.8 in)
1966	23.0 mm (0.9 in)
1967	25.2 mm (1.0 in)
1968	32.5 mm (1.3 in)
1969	24.0 mm (0.9 in)
1970	25.9 mm (1.0 in)
1971	19.9 mm (0.8 in)
1972	29.1 mm (1.1 in)
1973	44.5 mm (1.8 in)
1974	37.0 mm (1.5 in)
1975	22.0 mm (0.9 in)
1976	31.6 mm (1.2 in)
1977	35.7 mm (1.4 in)
1978	40.7 mm (1.6 in)
1979	22.5 mm (0.9 in)

Wettest five days (Rx5day)

The wettest five days of the year at Nykopings_Flygplats, 1944 to 1979. The record is 110.2 mm (4.3 in) in 1951, marked on the chart; the median year is 51.8 mm (2.0 in).

Wettest five days (Rx5day) at Nykopings_Flygplats by year
Year	Wettest five days (Rx5day)
1944	67.4 mm (2.7 in)
1945	51.8 mm (2.0 in)
1946	65.7 mm (2.6 in)
1947	36.3 mm (1.4 in)
1948	33.4 mm (1.3 in)
1949	59.5 mm (2.3 in)
1950	59.2 mm (2.3 in)
1951	110.2 mm (4.3 in)
1952	41.7 mm (1.6 in)
1953	40.3 mm (1.6 in)
1954	51.6 mm (2.0 in)
1955	50.7 mm (2.0 in)
1956	38.0 mm (1.5 in)
1957	36.2 mm (1.4 in)
1958	55.6 mm (2.2 in)
1959	38.9 mm (1.5 in)
1960	90.8 mm (3.6 in)
1961	62.0 mm (2.4 in)
1962	42.5 mm (1.7 in)
1963	60.8 mm (2.4 in)
1964	68.7 mm (2.7 in)
1965	68.5 mm (2.7 in)
1966	51.7 mm (2.0 in)
1967	62.0 mm (2.4 in)
1968	53.5 mm (2.1 in)
1969	51.6 mm (2.0 in)
1970	41.6 mm (1.6 in)
1971	44.3 mm (1.7 in)
1972	46.1 mm (1.8 in)
1973	54.2 mm (2.1 in)
1974	47.0 mm (1.9 in)
1975	34.1 mm (1.3 in)
1976	57.5 mm (2.3 in)
1977	58.2 mm (2.3 in)
1978	81.5 mm (3.2 in)
1979	38.1 mm (1.5 in)

Longest dry spell (CDD)

The longest dry spell of the year at Nykopings_Flygplats, 1944 to 1979. The record is 55 days in 1964, marked on the chart; the median year is 22 days.

Longest dry spell (CDD) at Nykopings_Flygplats by year
Year	Longest dry spell (CDD)
1944	25 days
1945	14 days
1946	16 days
1947	39 days
1948	28 days
1949	28 days
1950	17 days
1951	37 days
1952	19 days
1953	34 days
1954	20 days
1955	28 days
1956	18 days
1957	17 days
1958	24 days
1959	22 days
1960	27 days
1961	19 days
1962	35 days
1963	35 days
1964	55 days
1965	19 days
1966	17 days
1967	17 days
1968	19 days
1969	34 days
1970	22 days
1971	18 days
1972	20 days
1973	22 days
1974	34 days
1975	18 days
1976	23 days
1977	12 days
1978	18 days
1979	33 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

32 years with a frost

Across 32 years with a frost, the median last spring frost at Nykopings_Flygplats falls on 24 May and the median first autumn frost on 26 September, which leaves a median of 128 days between them.

Fitted over all years, the growing season changes by -2.8 days per decade at this station.

Frost dates and growing season at Nykopings_Flygplats
Measure	Median, all years	Earliest period	Recent period (1949 to 1978)	Recent against earliest	Fitted trend
Last spring frost	24 May	n/a	22 May	n/a	0.0 days per decade
First autumn frost	26 September	n/a	23 September	n/a	-2.8 days per decade
Growing days	128 days	n/a	128 days	n/a	-2.8 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

35 years, 1944 to 1978

A day with at least 28.9 mm (1.1 in) of rain is expected about once in 2 years. A day with at least 64.0 mm (2.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Nykopings_Flygplats: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	28.9 mm (1.1 in)
5 years	37.6 mm (1.5 in)
10 years	43.6 mm (1.7 in)
25 years	51.5 mm (2.0 in)
50 years	57.7 mm (2.3 in)	Longer than the 35 years of record
100 years	64.0 mm (2.5 in)	Longer than the 35 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, 35 years of values from 1944 to 1978.

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: 58.0 mm (2.3 in) in 1951; 52.0 mm (2.0 in) in 1960; 46.2 mm (1.8 in) in 1965.

Download the Data

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