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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Frotuna Weather Records (SWE00139180)

Record envelope, standing records and threshold days for Frotuna (SWE00139180), Sweden, with 43 years of record.

Key Facts for Frotuna

  • Frotuna (SWE00139180) is a weather station in Sweden at 59.91 latitude and 17.86 longitude, 15 m (49 ft) above sea level.
  • The station reports from 1945 to 1987, 43 years of record.
  • 0 records set at Frotuna still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Frotuna set a daily record precipitation of 10.1 mm (0.4 in) on 9 May 1987.

About the Station

  • Location: Sweden, 59.91 latitude, 17.86 longitude.
  • Elevation: 15 m (49 ft).
  • Period of record: 1945 to 1987, 43 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Frotuna, with 2026 drawn through them The band shows the record high and record low for each calendar day at Frotuna. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 000111 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Frotuna. 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 Frotuna, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
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Which Years Hold Standing Records

0 standing records
Standing records at Frotuna by the year they were set 0 records at Frotuna still stand. 00000000000
0 records at Frotuna still stand.
Standing records at Frotuna by the year they were set
Year setStanding records

Wettest Day of Each Month

Sep: 73.5 mm (2.9 in)
Record daily precipitation for each month at Frotuna The wettest day on record for each calendar month at Frotuna. The most was 73.5 mm (2.9 in) on 24 September 1957. 020406080 Jan: 22.5 mm (0.9 in), 29 January 1966 Jan Feb: 19.4 mm (0.8 in), 15 February 1956 Feb Mar: 30.8 mm (1.2 in), 21 March 1974 Mar Apr: 19.0 mm (0.7 in), 10 April 1959 Apr May: 29.6 mm (1.2 in), 18 May 1968 May Jun: 44.0 mm (1.7 in), 12 June 1981 Jun Jul: 59.6 mm (2.3 in), 31 July 1965 Jul Aug: 59.0 mm (2.3 in), 26 August 1979 Aug Sep: 73.5 mm (2.9 in), 24 September 1957 Sep Oct: 28.5 mm (1.1 in), 7 October 1967 Oct Nov: 27.5 mm (1.1 in), 18 November 1980 Nov Dec: 30.0 mm (1.2 in), 26 December 1958 Dec
The wettest day on record for each calendar month at Frotuna. The most was 73.5 mm (2.9 in) on 24 September 1957.
Record daily precipitation for each month at Frotuna
MonthRecord daily precipitation (mm)Date
Jan22.5 mm (0.9 in)29 January 1966
Feb19.4 mm (0.8 in)15 February 1956
Mar30.8 mm (1.2 in)21 March 1974
Apr19.0 mm (0.7 in)10 April 1959
May29.6 mm (1.2 in)18 May 1968
Jun44.0 mm (1.7 in)12 June 1981
Jul59.6 mm (2.3 in)31 July 1965
Aug59.0 mm (2.3 in)26 August 1979
Sep73.5 mm (2.9 in)24 September 1957
Oct28.5 mm (1.1 in)7 October 1967
Nov27.5 mm (1.1 in)18 November 1980
Dec30.0 mm (1.2 in)26 December 1958

Latest Records

20
Latest records at Frotuna
DateStationRecordValueBeat old record byOld record stoodSignificance
9 May 1987Frotuna, SEdaily rain10.1 mm (0.4 in)7.7 mm (0.30 in)17 years20 of 100 (Routine)
18 March 1987Frotuna, SEdaily rain6.2 mm (0.24 in)1.7 mm (0.07 in)9 years10 of 100 (Routine)
29 December 1986Frotuna, SEdaily rain (Tie)14.5 mm (0.6 in)tie20 years2 of 100 (Routine)
21 December 1986Frotuna, SEdaily rain9.0 mm (0.35 in)1.8 mm (0.07 in)28 years16 of 100 (Routine)
5 December 1986Frotuna, SEdaily rain18.8 mm (0.7 in)7.8 mm (0.31 in)24 years20 of 100 (Routine)
5 November 1986Frotuna, SEdaily rain9.0 mm (0.35 in)0.6 mm (0.02 in)0 years5 of 100 (Routine)
30 August 1986Frotuna, SEdaily rain34.0 mm (1.3 in)12.8 mm (0.5 in)25 years28 of 100 (Routine)
29 August 1986Frotuna, SEdaily rain49.2 mm (1.9 in)28.0 mm (1.1 in)25 years49 of 100 (Notable)
25 July 1986Frotuna, SEdaily rain30.0 mm (1.2 in)12.8 mm (0.5 in)12 years24 of 100 (Routine)
7 June 1986Frotuna, SEdaily rain27.0 mm (1.1 in)11.8 mm (0.5 in)28 years30 of 100 (Routine)
12 May 1986Frotuna, SEdaily rain17.4 mm (0.7 in)4.3 mm (0.17 in)11 years16 of 100 (Routine)
19 April 1986Frotuna, SEdaily rain11.3 mm (0.4 in)4.9 mm (0.19 in)16 years20 of 100 (Routine)
30 March 1986Frotuna, SEdaily rain (Tie)6.0 mm (0.24 in)tie5 years1 of 100 (Routine)
25 March 1986Frotuna, SEdaily rain9.7 mm (0.38 in)2.8 mm (0.11 in)8 years13 of 100 (Routine)
23 March 1986Frotuna, SEdaily rain18.2 mm (0.7 in)12.2 mm (0.5 in)20 years20 of 100 (Routine)
21 January 1986Frotuna, SEdaily rain8.2 mm (0.32 in)1.4 mm (0.06 in)40 years19 of 100 (Routine)
6 December 1985Frotuna, SEdaily rain15.4 mm (0.6 in)3.0 mm (0.12 in)20 years16 of 100 (Routine)
27 November 1985Frotuna, SEdaily rain14.3 mm (0.6 in)1.3 mm (0.05 in)31 years15 of 100 (Routine)
5 November 1985Frotuna, SEdaily rain8.4 mm (0.33 in)0.7 mm (0.03 in)27 years13 of 100 (Routine)
8 October 1985Frotuna, SEdaily rain10.5 mm (0.4 in)0.5 mm (0.02 in)27 years13 of 100 (Routine)

Extremes by Year

1945 to 1987
Yearly extremes at Frotuna: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)73.5 mm (2.9 in)195726.3 mm (1.0 in)39
Wettest five days (Rx5day)109.2 mm (4.3 in)198650.7 mm (2.0 in)39
Longest dry spell (CDD)43 days196422 days39

Wettest day (Rx1day)

Wettest day (Rx1day) at Frotuna by year The wettest day of the year at Frotuna, 1945 to 1987. The record is 73.5 mm (2.9 in) in 1957, marked on the chart; the median year is 26.3 mm (1.0 in). 0204060801950196019701980Record: 73.5 mm (2.9 in) in 1957
The wettest day of the year at Frotuna, 1945 to 1987. The record is 73.5 mm (2.9 in) in 1957, marked on the chart; the median year is 26.3 mm (1.0 in).
Wettest day (Rx1day) at Frotuna by year
YearWettest day (Rx1day)
194524.5 mm (1.0 in)
194623.5 mm (0.9 in)
194924.0 mm (0.9 in)
195212.2 mm (0.5 in)
195327.6 mm (1.1 in)
195426.1 mm (1.0 in)
195520.4 mm (0.8 in)
195619.4 mm (0.8 in)
195773.5 mm (2.9 in)
195830.0 mm (1.2 in)
195922.2 mm (0.9 in)
196050.6 mm (2.0 in)
196143.5 mm (1.7 in)
196215.5 mm (0.6 in)
196323.6 mm (0.9 in)
196427.5 mm (1.1 in)
196559.6 mm (2.3 in)
196652.0 mm (2.0 in)
196728.5 mm (1.1 in)
196839.0 mm (1.5 in)
196920.0 mm (0.8 in)
197019.1 mm (0.8 in)
197139.0 mm (1.5 in)
197226.0 mm (1.0 in)
197334.2 mm (1.3 in)
197430.8 mm (1.2 in)
197515.0 mm (0.6 in)
197623.0 mm (0.9 in)
197729.5 mm (1.2 in)
197842.5 mm (1.7 in)
197959.0 mm (2.3 in)
198033.0 mm (1.3 in)
198144.0 mm (1.7 in)
198224.5 mm (1.0 in)
198326.0 mm (1.0 in)
198426.3 mm (1.0 in)
198524.5 mm (1.0 in)
198649.2 mm (1.9 in)
198710.1 mm (0.4 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Frotuna by year The wettest five days of the year at Frotuna, 1945 to 1987. The record is 109.2 mm (4.3 in) in 1986, marked on the chart; the median year is 50.7 mm (2.0 in). 02550751001251950196019701980Record: 109.2 mm (4.3 in) in 1986
The wettest five days of the year at Frotuna, 1945 to 1987. The record is 109.2 mm (4.3 in) in 1986, marked on the chart; the median year is 50.7 mm (2.0 in).
Wettest five days (Rx5day) at Frotuna by year
YearWettest five days (Rx5day)
194549.7 mm (2.0 in)
194658.3 mm (2.3 in)
194943.6 mm (1.7 in)
195235.2 mm (1.4 in)
195335.3 mm (1.4 in)
195460.3 mm (2.4 in)
195536.0 mm (1.4 in)
195636.9 mm (1.5 in)
195782.7 mm (3.3 in)
195852.5 mm (2.1 in)
195949.6 mm (2.0 in)
196080.3 mm (3.2 in)
196170.7 mm (2.8 in)
196235.5 mm (1.4 in)
196347.1 mm (1.9 in)
196444.4 mm (1.7 in)
196588.2 mm (3.5 in)
196687.6 mm (3.4 in)
196739.4 mm (1.6 in)
196870.1 mm (2.8 in)
196938.9 mm (1.5 in)
197036.0 mm (1.4 in)
197154.7 mm (2.2 in)
197237.3 mm (1.5 in)
197347.1 mm (1.9 in)
197454.6 mm (2.1 in)
197532.5 mm (1.3 in)
197635.6 mm (1.4 in)
197761.7 mm (2.4 in)
197890.9 mm (3.6 in)
197967.9 mm (2.7 in)
198075.7 mm (3.0 in)
198150.7 mm (2.0 in)
198247.4 mm (1.9 in)
198350.9 mm (2.0 in)
198461.5 mm (2.4 in)
198560.3 mm (2.4 in)
1986109.2 mm (4.3 in)
198720.6 mm (0.8 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Frotuna by year The longest dry spell of the year at Frotuna, 1945 to 1987. The record is 43 days in 1964, marked on the chart; the median year is 22 days. 010203040501950196019701980Record: 43 days in 1964
The longest dry spell of the year at Frotuna, 1945 to 1987. The record is 43 days in 1964, marked on the chart; the median year is 22 days.
Longest dry spell (CDD) at Frotuna by year
YearLongest dry spell (CDD)
194516 days
194642 days
194924 days
19527 days
195319 days
195411 days
195519 days
195630 days
195723 days
195822 days
195925 days
196028 days
196134 days
196219 days
196319 days
196443 days
196520 days
196627 days
196719 days
196826 days
196927 days
197021 days
197121 days
197222 days
197314 days
197435 days
197522 days
197621 days
197715 days
197822 days
197926 days
198025 days
198127 days
198219 days
198332 days
198424 days
198534 days
198616 days
198723 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.

Rainfall Return Levels

32 years, 1945 to 1986

A day with at least 29.0 mm (1.1 in) of rain is expected about once in 2 years. A day with at least 85.4 mm (3.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Frotuna: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years29.0 mm (1.1 in)
5 years40.9 mm (1.6 in)
10 years49.9 mm (2.0 in)
25 years62.7 mm (2.5 in)
50 years73.5 mm (2.9 in)Longer than the 32 years of record
100 years85.4 mm (3.4 in)Longer than the 32 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, 32 years of values from 1945 to 1986.

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: 73.5 mm (2.9 in) in 1957; 59.0 mm (2.3 in) in 1979; 52.0 mm (2.0 in) in 1966.

Download the Data

  • Data for Frotuna standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Frotuna 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 . Last revised (2025-12-31).