Grimeton Weather Records (SWE00137966)

Record envelope, standing records and threshold days for Grimeton (SWE00137966), Sweden, with 47 years of record.

Key Facts for Grimeton

Grimeton (SWE00137966) is a weather station in Sweden at 57.11 latitude and 12.39 longitude, 25 m (82 ft) above sea level.
The station reports from 1951 to 1997, 47 years of record.
1,464 records set at Grimeton still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Grimeton set a daily record precipitation of 25.4 mm (1.0 in) on 27 July 1997.

About the Station

Location: Sweden, 57.11 latitude, 12.39 longitude.
Elevation: 25 m (82 ft).
Period of record: 1951 to 1997, 47 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 Grimeton. 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 Grimeton, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	8.6 C (47.5 F)	-22.2 C (-8.0 F)	n/a	n/a
Feb	9.5 C (49.1 F)	-25.5 C (-13.9 F)	n/a	n/a
Mar	15.8 C (60.4 F)	-18.5 C (-1.3 F)	n/a	n/a
Apr	22.3 C (72.1 F)	-10.2 C (13.6 F)	n/a	n/a
May	27.1 C (80.8 F)	-4.1 C (24.6 F)	n/a	n/a
Jun	29.7 C (85.5 F)	-0.8 C (30.6 F)	n/a	n/a
Jul	31.6 C (88.9 F)	4.0 C (39.2 F)	n/a	n/a
Aug	33.0 C (91.4 F)	2.0 C (35.6 F)	n/a	n/a
Sep	26.3 C (79.3 F)	-4.0 C (24.8 F)	n/a	n/a
Oct	20.1 C (68.2 F)	-7.6 C (18.3 F)	n/a	n/a
Nov	14.2 C (57.6 F)	-15.4 C (4.3 F)	n/a	n/a
Dec	11.2 C (52.2 F)	-20.0 C (-4.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Grimeton still stand. 1971 holds the most, with 89.

Standing records at Grimeton by the year they were set
Year set	Standing records
1951	53
1952	75
1953	65
1954	35
1955	86
1956	61
1957	57
1958	41
1959	71
1960	42
1963	66
1964	55
1965	67
1966	65
1967	48
1968	68
1969	66
1970	62
1971	89
1972	55
1973	76
1974	66
1975	80
1976	15

Wettest Day of Each Month

Sep: 56.9 mm (2.2 in)

The wettest day on record for each calendar month at Grimeton. The most was 56.9 mm (2.2 in) on 7 September 1965.

Record daily precipitation for each month at Grimeton
Month	Record daily precipitation (mm)	Date
Jan	23.3 mm (0.9 in)	25 January 1990
Feb	26.0 mm (1.0 in)	12 February 1973
Mar	25.0 mm (1.0 in)	7 March 1981
Apr	27.8 mm (1.1 in)	15 April 1992
May	36.9 mm (1.5 in)	26 May 1967
Jun	51.8 mm (2.0 in)	27 June 1971
Jul	43.5 mm (1.7 in)	16 July 1973
Aug	51.6 mm (2.0 in)	7 August 1971
Sep	56.9 mm (2.2 in)	7 September 1965
Oct	42.4 mm (1.7 in)	22 October 1984
Nov	48.0 mm (1.9 in)	17 November 1980
Dec	33.4 mm (1.3 in)	9 December 1965

Period of Record Coverage

1951 to 1976

24 years of record at Grimeton, 1951 to 1976. 1 years have data for under 90 percent of days and are left out of rankings: 1976.

Days with data per year at Grimeton
Year	Days with data	Share of year	Complete
1951	365	100%	Yes
1952	366	100%	Yes
1953	365	100%	Yes
1954	364	100%	Yes
1955	365	100%	Yes
1956	366	100%	Yes
1957	365	100%	Yes
1958	365	100%	Yes
1959	357	98%	Yes
1960	366	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	124	34%	No

Latest Records

Latest records at Grimeton
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 July 1997	Grimeton, SE	daily rain	25.4 mm (1.0 in)	15.8 mm (0.6 in)	12 years	27 of 100 (Routine)
28 June 1997	Grimeton, SE	daily rain	24.7 mm (1.0 in)	14.3 mm (0.6 in)	30 years	20 of 100 (Routine)
21 June 1997	Grimeton, SE	daily rain	36.4 mm (1.4 in)	14.5 mm (0.6 in)	28 years	33 of 100 (Routine)
14 May 1997	Grimeton, SE	daily rain	25.7 mm (1.0 in)	13.2 mm (0.5 in)	14 years	35 of 100 (Notable)
6 May 1997	Grimeton, SE	daily rain	25.0 mm (1.0 in)	15.5 mm (0.6 in)	28 years	43 of 100 (Notable)
24 April 1997	Grimeton, SE	daily rain	11.7 mm (0.5 in)	3.4 mm (0.13 in)	11 years	13 of 100 (Routine)
23 April 1997	Grimeton, SE	daily rain	19.3 mm (0.8 in)	3.1 mm (0.12 in)	31 years	18 of 100 (Routine)
26 March 1997	Grimeton, SE	daily rain	16.4 mm (0.6 in)	7.9 mm (0.31 in)	19 years	20 of 100 (Routine)
18 February 1997	Grimeton, SE	daily rain	11.5 mm (0.5 in)	0.5 mm (0.02 in)	8 years	6 of 100 (Routine)
13 February 1997	Grimeton, SE	daily rain	11.1 mm (0.4 in)	1.4 mm (0.06 in)	32 years	15 of 100 (Routine)
4 February 1997	Grimeton, SE	daily rain	16.2 mm (0.6 in)	5.5 mm (0.22 in)	13 years	19 of 100 (Routine)
14 December 1996	Grimeton, SE	daily rain	32.4 mm (1.3 in)	25.5 mm (1.0 in)	11 years	46 of 100 (Notable)
29 September 1996	Grimeton, SE	daily rain	26.9 mm (1.1 in)	4.6 mm (0.18 in)	22 years	15 of 100 (Routine)
4 July 1996	Grimeton, SE	daily rain	23.5 mm (0.9 in)	19.8 mm (0.8 in)	22 years	20 of 100 (Routine)
24 May 1996	Grimeton, SE	daily rain	13.9 mm (0.5 in)	3.5 mm (0.14 in)	15 years	14 of 100 (Routine)
18 May 1996	Grimeton, SE	daily rain	11.3 mm (0.4 in)	3.4 mm (0.13 in)	12 years	13 of 100 (Routine)
17 May 1996	Grimeton, SE	daily rain	9.1 mm (0.36 in)	2.5 mm (0.10 in)	1 year	8 of 100 (Routine)
4 May 1996	Grimeton, SE	daily rain	13.6 mm (0.5 in)	7.9 mm (0.31 in)	5 years	20 of 100 (Routine)
25 April 1996	Grimeton, SE	daily rain	16.7 mm (0.7 in)	2.8 mm (0.11 in)	4 years	10 of 100 (Routine)
24 April 1996	Grimeton, SE	daily rain (Tie)	8.3 mm (0.33 in)	tie	10 years	1 of 100 (Routine)

Climate Trend

22 complete years, 1951 to 1975

One stripe for each of 22 complete years at Grimeton, 1951 to 1975. Blue stripes are years cooler than the station's own mean of 6.9 C (44.4 F); red stripes are warmer. The coolest year was 1956, at 5.6 C (42.1 F), and the warmest was 1975, at 8.1 C (46.7 F). The strongest colour marks a difference of 1.3 C (2.3 F).

Annual mean temperature at Grimeton as warming stripes, 1951 to 1975
Year	Annual mean temperature	Difference from the station mean
1951	7.3 C	+0.40 C
1952	6.0 C	-0.93 C
1953	7.9 C	+0.97 C
1954	6.5 C	-0.41 C
1955	6.1 C	-0.80 C
1956	5.6 C	-1.26 C
1957	7.3 C	+0.37 C
1958	6.5 C	-0.42 C
1960	6.9 C	-0.02 C
1963	6.2 C	-0.71 C
1964	6.9 C	+0.03 C
1965	6.1 C	-0.74 C
1966	6.3 C	-0.56 C
1967	7.6 C	+0.75 C
1968	7.1 C	+0.26 C
1969	7.0 C	+0.11 C
1970	6.0 C	-0.90 C
1971	7.7 C	+0.80 C
1972	7.4 C	+0.53 C
1973	7.2 C	+0.32 C
1974	7.9 C	+0.97 C
1975	8.1 C	+1.26 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

1951 to 1997

Yearly extremes at Grimeton: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	33.0 C (91.4 F)	1975	29.0 C (84.2 F)	24
Coldest night (TNn)	-25.5 C (-13.9 F)	1956	-17.1 C (1.1 F)	24
Wettest day (Rx1day)	56.9 mm (2.2 in)	1965	34.0 mm (1.3 in)	33
Wettest five days (Rx5day)	115.8 mm (4.6 in)	1982	57.8 mm (2.3 in)	33
Longest dry spell (CDD)	48 days	1992	24 days	33

Hottest day (TXx)

The hottest day of the year at Grimeton, 1951 to 1997. The record is 33.0 C (91.4 F) in 1975, marked on the chart; the median year is 29.0 C (84.2 F).

Hottest day (TXx) at Grimeton by year
Year	Hottest day (TXx)
1951	27.0 C (80.6 F)
1952	26.0 C (78.8 F)
1953	29.0 C (84.2 F)
1954	26.7 C (80.1 F)
1955	29.8 C (85.6 F)
1956	29.2 C (84.6 F)
1957	28.5 C (83.3 F)
1958	29.5 C (85.1 F)
1959	29.4 C (84.9 F)
1960	28.0 C (82.4 F)
1963	29.2 C (84.6 F)
1964	29.2 C (84.6 F)
1965	25.6 C (78.1 F)
1966	29.8 C (85.6 F)
1967	27.0 C (80.6 F)
1968	29.7 C (85.5 F)
1969	31.6 C (88.9 F)
1970	27.9 C (82.2 F)
1971	29.0 C (84.2 F)
1972	28.3 C (82.9 F)
1973	29.5 C (85.1 F)
1974	26.5 C (79.7 F)
1975	33.0 C (91.4 F)
1976	14.8 C (58.6 F)
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a

Coldest night (TNn)

The coldest night of the year at Grimeton, 1951 to 1997. The record is -25.5 C (-13.9 F) in 1956, marked on the chart; the median year is -17.1 C (1.1 F).

Coldest night (TNn) at Grimeton by year
Year	Coldest night (TNn)
1951	-11.9 C (10.6 F)
1952	-13.7 C (7.3 F)
1953	-19.0 C (-2.2 F)
1954	-14.2 C (6.4 F)
1955	-20.3 C (-4.5 F)
1956	-25.5 C (-13.9 F)
1957	-14.5 C (5.9 F)
1958	-19.0 C (-2.2 F)
1959	-12.6 C (9.3 F)
1960	-16.8 C (1.8 F)
1963	-21.8 C (-7.2 F)
1964	-18.1 C (-0.6 F)
1965	-18.5 C (-1.3 F)
1966	-20.5 C (-4.9 F)
1967	-16.2 C (2.8 F)
1968	-22.2 C (-8.0 F)
1969	-18.7 C (-1.7 F)
1970	-21.2 C (-6.2 F)
1971	-17.5 C (0.5 F)
1972	-11.0 C (12.2 F)
1973	-15.7 C (3.7 F)
1974	-7.1 C (19.2 F)
1975	-14.1 C (6.6 F)
1976	-16.7 C (1.9 F)
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a

Wettest day (Rx1day)

The wettest day of the year at Grimeton, 1951 to 1997. The record is 56.9 mm (2.2 in) in 1965, marked on the chart; the median year is 34.0 mm (1.3 in).

Wettest day (Rx1day) at Grimeton by year
Year	Wettest day (Rx1day)
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1963	n/a
1964	n/a
1965	56.9 mm (2.2 in)
1966	34.0 mm (1.3 in)
1967	36.9 mm (1.5 in)
1968	30.4 mm (1.2 in)
1969	26.6 mm (1.0 in)
1970	19.4 mm (0.8 in)
1971	51.8 mm (2.0 in)
1972	35.0 mm (1.4 in)
1973	43.5 mm (1.7 in)
1974	25.4 mm (1.0 in)
1975	28.0 mm (1.1 in)
1976	22.0 mm (0.9 in)
1977	32.5 mm (1.3 in)
1978	40.5 mm (1.6 in)
1979	43.0 mm (1.7 in)
1980	48.0 mm (1.9 in)
1981	36.4 mm (1.4 in)
1982	39.0 mm (1.5 in)
1983	25.7 mm (1.0 in)
1984	42.4 mm (1.7 in)
1985	48.4 mm (1.9 in)
1986	29.0 mm (1.1 in)
1987	27.5 mm (1.1 in)
1988	42.5 mm (1.7 in)
1989	34.0 mm (1.3 in)
1990	31.3 mm (1.2 in)
1991	26.0 mm (1.0 in)
1992	28.0 mm (1.1 in)
1993	37.2 mm (1.5 in)
1994	31.2 mm (1.2 in)
1995	31.4 mm (1.2 in)
1996	32.4 mm (1.3 in)
1997	36.4 mm (1.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at Grimeton, 1951 to 1997. The record is 115.8 mm (4.6 in) in 1982, marked on the chart; the median year is 57.8 mm (2.3 in).

Wettest five days (Rx5day) at Grimeton by year
Year	Wettest five days (Rx5day)
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1963	n/a
1964	n/a
1965	68.9 mm (2.7 in)
1966	67.6 mm (2.7 in)
1967	57.8 mm (2.3 in)
1968	67.8 mm (2.7 in)
1969	40.3 mm (1.6 in)
1970	68.5 mm (2.7 in)
1971	76.2 mm (3.0 in)
1972	45.4 mm (1.8 in)
1973	54.0 mm (2.1 in)
1974	51.5 mm (2.0 in)
1975	56.1 mm (2.2 in)
1976	41.9 mm (1.6 in)
1977	76.5 mm (3.0 in)
1978	65.1 mm (2.6 in)
1979	64.5 mm (2.5 in)
1980	94.8 mm (3.7 in)
1981	54.2 mm (2.1 in)
1982	115.8 mm (4.6 in)
1983	54.4 mm (2.1 in)
1984	70.5 mm (2.8 in)
1985	102.8 mm (4.0 in)
1986	56.5 mm (2.2 in)
1987	67.2 mm (2.6 in)
1988	46.9 mm (1.8 in)
1989	74.7 mm (2.9 in)
1990	58.9 mm (2.3 in)
1991	51.6 mm (2.0 in)
1992	57.8 mm (2.3 in)
1993	86.5 mm (3.4 in)
1994	54.5 mm (2.1 in)
1995	52.1 mm (2.1 in)
1996	47.5 mm (1.9 in)
1997	55.6 mm (2.2 in)

Longest dry spell (CDD)

The longest dry spell of the year at Grimeton, 1951 to 1997. The record is 48 days in 1992, marked on the chart; the median year is 24 days.

Longest dry spell (CDD) at Grimeton by year
Year	Longest dry spell (CDD)
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1963	n/a
1964	n/a
1965	24 days
1966	16 days
1967	16 days
1968	26 days
1969	23 days
1970	24 days
1971	16 days
1972	21 days
1973	17 days
1974	42 days
1975	25 days
1976	29 days
1977	22 days
1978	26 days
1979	15 days
1980	24 days
1981	33 days
1982	39 days
1983	21 days
1984	22 days
1985	20 days
1986	34 days
1987	31 days
1988	18 days
1989	17 days
1990	15 days
1991	30 days
1992	48 days
1993	21 days
1994	24 days
1995	29 days
1996	30 days
1997	23 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

22 years with a frost

Across 22 years with a frost, the median last spring frost at Grimeton falls on 11 May and the median first autumn frost on 2 October, which leaves a median of 145 days between them.

Frost dates and growing season at Grimeton
Measure	Median, all years	Earliest period	Recent period (1951 to 1975)	Recent against earliest	Fitted trend
Last spring frost	11 May	n/a	11 May	n/a	n/a
First autumn frost	2 October	n/a	2 October	n/a	n/a
Growing days	145 days	n/a	145 days	n/a	n/a

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, 1965 to 1996

A day with at least 33.9 mm (1.3 in) of rain is expected about once in 2 years. A day with at least 61.7 mm (2.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Grimeton: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	33.9 mm (1.3 in)
5 years	42.2 mm (1.7 in)
10 years	47.3 mm (1.9 in)
25 years	53.4 mm (2.1 in)
50 years	57.6 mm (2.3 in)	Longer than the 31 years of record
100 years	61.7 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 1965 to 1996.

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: 56.9 mm (2.2 in) in 1965; 51.8 mm (2.0 in) in 1971; 48.4 mm (1.9 in) in 1985.

Download the Data

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