Suomusjarvi Kettula Weather Records (FIE00142020)

Record envelope, standing records and threshold days for Suomusjarvi Kettula (FIE00142020), Finland, with 31 years of record.

Key Facts for Suomusjarvi Kettula

Suomusjarvi Kettula (FIE00142020) is a weather station in Finland at 60.40 latitude and 23.77 longitude, 84 m (276 ft) above sea level.
The station reports from 1959 to 1989, 31 years of record.
1,464 records set at Suomusjarvi Kettula still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Finland, 60.40 latitude, 23.77 longitude.
Elevation: 84 m (276 ft).
Period of record: 1959 to 1989, 31 years.
Eligible elements: none yet.

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 Suomusjarvi Kettula. 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 Suomusjarvi Kettula, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	7.2 C (45.0 F)	-35.9 C (-32.6 F)	n/a	n/a
Feb	6.3 C (43.3 F)	-35.5 C (-31.9 F)	n/a	n/a
Mar	12.8 C (55.0 F)	-28.9 C (-20.0 F)	n/a	n/a
Apr	21.0 C (69.8 F)	-21.6 C (-6.9 F)	n/a	n/a
May	28.0 C (82.4 F)	-7.5 C (18.5 F)	n/a	n/a
Jun	30.5 C (86.9 F)	-1.8 C (28.8 F)	n/a	n/a
Jul	30.2 C (86.4 F)	1.2 C (34.2 F)	n/a	n/a
Aug	30.5 C (86.9 F)	-0.2 C (31.6 F)	n/a	n/a
Sep	26.0 C (78.8 F)	-6.8 C (19.8 F)	n/a	n/a
Oct	17.8 C (64.0 F)	-11.6 C (11.1 F)	n/a	n/a
Nov	11.4 C (52.5 F)	-23.0 C (-9.4 F)	n/a	n/a
Dec	7.2 C (45.0 F)	-34.2 C (-29.6 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Suomusjarvi Kettula still stand. 1973 holds the most, with 77.

Standing records at Suomusjarvi Kettula by the year they were set
Year set	Standing records
1959	58
1960	40
1961	73
1962	43
1963	47
1964	33
1965	69
1966	59
1967	59
1968	63
1969	35
1970	27
1971	44
1972	74
1973	77
1974	38
1975	67
1976	42
1977	55
1978	67
1979	31
1980	50
1981	37
1982	53
1983	42
1984	43
1985	43
1986	35
1987	51
1988	9

Wettest Day of Each Month

Aug: 83.1 mm (3.3 in)

The wettest day on record for each calendar month at Suomusjarvi Kettula. The most was 83.1 mm (3.3 in) on 4 August 1978.

Record daily precipitation for each month at Suomusjarvi Kettula
Month	Record daily precipitation (mm)	Date
Jan	22.8 mm (0.9 in)	15 January 1974
Feb	25.4 mm (1.0 in)	12 February 1962
Mar	19.1 mm (0.8 in)	21 March 1974
Apr	24.3 mm (1.0 in)	25 April 1966
May	20.7 mm (0.8 in)	7 May 1974
Jun	31.8 mm (1.3 in)	16 June 1987
Jul	27.6 mm (1.1 in)	31 July 1987
Aug	83.1 mm (3.3 in)	4 August 1978
Sep	54.7 mm (2.2 in)	8 September 1968
Oct	27.7 mm (1.1 in)	26 October 1962
Nov	23.4 mm (0.9 in)	26 November 1979
Dec	36.8 mm (1.4 in)	18 December 1966

Period of Record Coverage

1959 to 1989

31 years of record at Suomusjarvi Kettula, 1959 to 1989. 3 years have data for under 90 percent of days and are left out of rankings: 1959, 1988, 1989.

Days with data per year at Suomusjarvi Kettula
Year	Days with data	Share of year	Complete
1959	276	76%	No
1960	366	100%	Yes
1961	365	100%	Yes
1962	364	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	365	100%	Yes
1988	39	11%	No
1989	2	1%	No

Latest Records

No records were set at this station in the latest data.

Climate Trend

28 complete years, 1960 to 1987

One stripe for each of 28 complete years at Suomusjarvi Kettula, 1960 to 1987. Blue stripes are years cooler than the station's own mean of 3.8 C (38.8 F); red stripes are warmer. The coolest year was 1985, at 2.3 C (36.1 F), and the warmest was 1975, at 5.6 C (42.1 F). The strongest colour marks a difference of 1.9 C (3.4 F).

Annual mean temperature at Suomusjarvi Kettula as warming stripes, 1960 to 1987
Year	Annual mean temperature	Difference from the station mean
1960	3.7 C	-0.06 C
1961	5.3 C	+1.50 C
1962	3.4 C	-0.42 C
1963	3.4 C	-0.41 C
1964	4.0 C	+0.17 C
1965	3.6 C	-0.25 C
1966	2.9 C	-0.93 C
1967	4.2 C	+0.35 C
1968	3.5 C	-0.27 C
1969	3.1 C	-0.74 C
1970	3.2 C	-0.56 C
1971	4.1 C	+0.32 C
1972	4.9 C	+1.10 C
1973	4.1 C	+0.27 C
1974	5.3 C	+1.46 C
1975	5.6 C	+1.82 C
1976	2.7 C	-1.06 C
1977	3.6 C	-0.25 C
1978	2.6 C	-1.18 C
1979	3.7 C	-0.11 C
1980	3.4 C	-0.45 C
1981	3.8 C	-0.05 C
1982	4.4 C	+0.60 C
1983	4.9 C	+1.13 C
1984	4.9 C	+1.10 C
1985	2.3 C	-1.54 C
1986	3.6 C	-0.17 C
1987	2.3 C	-1.49 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

1959 to 1989

Yearly extremes at Suomusjarvi Kettula: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	30.5 C (86.9 F)	1959	28.4 C (83.1 F)	31
Coldest night (TNn)	-35.9 C (-32.6 F)	1967	-30.1 C (-22.2 F)	31
Wettest day (Rx1day)	83.1 mm (3.3 in)	1978	25.9 mm (1.0 in)	31
Wettest five days (Rx5day)	128.5 mm (5.1 in)	1978	53.0 mm (2.1 in)	30
Longest dry spell (CDD)	41 days	1972	23 days	31

Hottest day (TXx)

The hottest day of the year at Suomusjarvi Kettula, 1959 to 1989. The record is 30.5 C (86.9 F) in 1959, marked on the chart; the median year is 28.4 C (83.1 F).

Hottest day (TXx) at Suomusjarvi Kettula by year
Year	Hottest day (TXx)
1959	30.5 C (86.9 F)
1960	28.3 C (82.9 F)
1961	27.6 C (81.7 F)
1962	23.8 C (74.8 F)
1963	29.8 C (85.6 F)
1964	29.2 C (84.6 F)
1965	26.5 C (79.7 F)
1966	28.6 C (83.5 F)
1967	28.9 C (84.0 F)
1968	28.5 C (83.3 F)
1969	28.7 C (83.7 F)
1970	28.4 C (83.1 F)
1971	27.6 C (81.7 F)
1972	29.8 C (85.6 F)
1973	30.2 C (86.4 F)
1974	25.4 C (77.7 F)
1975	30.5 C (86.9 F)
1976	26.0 C (78.8 F)
1977	30.5 C (86.9 F)
1978	27.0 C (80.6 F)
1979	28.5 C (83.3 F)
1980	29.2 C (84.6 F)
1981	26.8 C (80.2 F)
1982	28.2 C (82.8 F)
1983	29.7 C (85.5 F)
1984	27.0 C (80.6 F)
1985	28.0 C (82.4 F)
1986	29.3 C (84.7 F)
1987	27.2 C (81.0 F)
1988	4.6 C (40.3 F)
1989	0.5 C (32.9 F)

Coldest night (TNn)

The coldest night of the year at Suomusjarvi Kettula, 1959 to 1989. The record is -35.9 C (-32.6 F) in 1967, marked on the chart; the median year is -30.1 C (-22.2 F).

Coldest night (TNn) at Suomusjarvi Kettula by year
Year	Coldest night (TNn)
1959	-26.5 C (-15.7 F)
1960	-30.0 C (-22.0 F)
1961	-28.9 C (-20.0 F)
1962	-29.2 C (-20.6 F)
1963	-32.0 C (-25.6 F)
1964	-29.0 C (-20.2 F)
1965	-31.2 C (-24.2 F)
1966	-35.5 C (-31.9 F)
1967	-35.9 C (-32.6 F)
1968	-34.3 C (-29.7 F)
1969	-30.2 C (-22.4 F)
1970	-34.2 C (-29.6 F)
1971	-25.6 C (-14.1 F)
1972	-26.2 C (-15.2 F)
1973	-30.1 C (-22.2 F)
1974	-16.6 C (2.1 F)
1975	-26.4 C (-15.5 F)
1976	-27.2 C (-17.0 F)
1977	-31.3 C (-24.3 F)
1978	-34.2 C (-29.6 F)
1979	-35.5 C (-31.9 F)
1980	-33.1 C (-27.6 F)
1981	-28.0 C (-18.4 F)
1982	-32.8 C (-27.0 F)
1983	-23.8 C (-10.8 F)
1984	-29.2 C (-20.6 F)
1985	-34.2 C (-29.6 F)
1986	-31.4 C (-24.5 F)
1987	-35.7 C (-32.3 F)
1988	-20.6 C (-5.1 F)
1989	-15.0 C (5.0 F)

Wettest day (Rx1day)

The wettest day of the year at Suomusjarvi Kettula, 1959 to 1989. The record is 83.1 mm (3.3 in) in 1978, marked on the chart; the median year is 25.9 mm (1.0 in).

Wettest day (Rx1day) at Suomusjarvi Kettula by year
Year	Wettest day (Rx1day)
1959	17.4 mm (0.7 in)
1960	22.3 mm (0.9 in)
1961	27.4 mm (1.1 in)
1962	41.5 mm (1.6 in)
1963	25.2 mm (1.0 in)
1964	33.9 mm (1.3 in)
1965	20.4 mm (0.8 in)
1966	36.8 mm (1.4 in)
1967	31.3 mm (1.2 in)
1968	54.7 mm (2.2 in)
1969	23.2 mm (0.9 in)
1970	24.2 mm (1.0 in)
1971	23.5 mm (0.9 in)
1972	26.4 mm (1.0 in)
1973	21.0 mm (0.8 in)
1974	22.8 mm (0.9 in)
1975	34.9 mm (1.4 in)
1976	25.7 mm (1.0 in)
1977	31.8 mm (1.3 in)
1978	83.1 mm (3.3 in)
1979	29.1 mm (1.1 in)
1980	28.7 mm (1.1 in)
1981	29.2 mm (1.1 in)
1982	32.4 mm (1.3 in)
1983	24.3 mm (1.0 in)
1984	24.4 mm (1.0 in)
1985	25.9 mm (1.0 in)
1986	21.5 mm (0.8 in)
1987	33.2 mm (1.3 in)
1988	7.3 mm (0.29 in)
1989	0.1 mm (0.00 in)

Wettest five days (Rx5day)

The wettest five days of the year at Suomusjarvi Kettula, 1959 to 1989. The record is 128.5 mm (5.1 in) in 1978, marked on the chart; the median year is 53.0 mm (2.1 in).

Wettest five days (Rx5day) at Suomusjarvi Kettula by year
Year	Wettest five days (Rx5day)
1959	33.4 mm (1.3 in)
1960	60.1 mm (2.4 in)
1961	55.8 mm (2.2 in)
1962	66.3 mm (2.6 in)
1963	54.7 mm (2.2 in)
1964	59.4 mm (2.3 in)
1965	53.2 mm (2.1 in)
1966	41.1 mm (1.6 in)
1967	88.4 mm (3.5 in)
1968	61.6 mm (2.4 in)
1969	56.7 mm (2.2 in)
1970	67.8 mm (2.7 in)
1971	34.0 mm (1.3 in)
1972	46.2 mm (1.8 in)
1973	46.3 mm (1.8 in)
1974	50.0 mm (2.0 in)
1975	52.4 mm (2.1 in)
1976	41.9 mm (1.6 in)
1977	50.9 mm (2.0 in)
1978	128.5 mm (5.1 in)
1979	61.3 mm (2.4 in)
1980	59.0 mm (2.3 in)
1981	63.8 mm (2.5 in)
1982	52.8 mm (2.1 in)
1983	36.0 mm (1.4 in)
1984	48.3 mm (1.9 in)
1985	50.7 mm (2.0 in)
1986	51.5 mm (2.0 in)
1987	53.8 mm (2.1 in)
1988	21.1 mm (0.8 in)
1989	n/a

Longest dry spell (CDD)

The longest dry spell of the year at Suomusjarvi Kettula, 1959 to 1989. The record is 41 days in 1972, marked on the chart; the median year is 23 days.

Longest dry spell (CDD) at Suomusjarvi Kettula by year
Year	Longest dry spell (CDD)
1959	25 days
1960	34 days
1961	24 days
1962	15 days
1963	18 days
1964	29 days
1965	23 days
1966	24 days
1967	14 days
1968	19 days
1969	25 days
1970	21 days
1971	30 days
1972	41 days
1973	18 days
1974	25 days
1975	17 days
1976	25 days
1977	13 days
1978	23 days
1979	22 days
1980	27 days
1981	19 days
1982	20 days
1983	32 days
1984	17 days
1985	12 days
1986	23 days
1987	28 days
1988	7 days
1989	1 day

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

28 years with a frost

Across 28 years with a frost, the median last spring frost at Suomusjarvi Kettula falls on 26 May and the median first autumn frost on 16 September, which leaves a median of 113 days between them.

Fitted over all years, the growing season changes by +1.7 days per decade at this station.

Frost dates and growing season at Suomusjarvi Kettula
Measure	Median, all years	Earliest period	Recent period (1960 to 1987)	Recent against earliest	Fitted trend
Last spring frost	26 May	n/a	26 May	n/a	-1.2 days per decade
First autumn frost	16 September	n/a	16 September	n/a	+0.4 days per decade
Growing days	113 days	n/a	113 days	n/a	+1.7 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.

Download the Data

Data for Suomusjarvi Kettula standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Suomusjarvi Kettula 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 2026-10-14 (14 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).