Sisimiut Weather Records (GLE00147041)

Record envelope, standing records and threshold days for Sisimiut (GLE00147041), Greenland [Denmark], with 41 years of record.

Key Facts for Sisimiut

Sisimiut (GLE00147041) is a weather station in Greenland [Denmark] at 66.92 latitude and -53.67 longitude, 12 m (39 ft) above sea level.
The station reports from 1961 to 2001, 41 years of record.
1,464 records set at Sisimiut still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Sisimiut set a daily record high minimum temperature of 3.4 C (38.1 F) on 15 June 2001.

About the Station

Location: Greenland [Denmark], 66.92 latitude, -53.67 longitude.
Elevation: 12 m (39 ft).
Period of record: 1961 to 2001, 41 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 Sisimiut. 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 Sisimiut, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	12.5 C (54.5 F)	-35.8 C (-32.4 F)	n/a	n/a
Feb	11.3 C (52.3 F)	-38.8 C (-37.8 F)	n/a	n/a
Mar	8.7 C (47.7 F)	-36.8 C (-34.2 F)	n/a	n/a
Apr	11.4 C (52.5 F)	-25.8 C (-14.4 F)	n/a	n/a
May	16.1 C (61.0 F)	-19.1 C (-2.4 F)	n/a	n/a
Jun	21.0 C (69.8 F)	-5.6 C (21.9 F)	n/a	n/a
Jul	22.0 C (71.6 F)	-3.0 C (26.6 F)	n/a	n/a
Aug	23.8 C (74.8 F)	-4.5 C (23.9 F)	n/a	n/a
Sep	16.7 C (62.1 F)	-7.8 C (18.0 F)	n/a	n/a
Oct	12.0 C (53.6 F)	-12.8 C (9.0 F)	n/a	n/a
Nov	12.6 C (54.7 F)	-21.0 C (-5.8 F)	n/a	n/a
Dec	11.5 C (52.7 F)	-33.0 C (-27.4 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Sisimiut still stand. 1992 holds the most, with 81.

Standing records at Sisimiut by the year they were set
Year set	Standing records
1961	16
1962	36
1963	37
1964	64
1965	24
1966	35
1967	30
1968	37
1969	49
1970	50
1971	56
1972	41
1973	26
1974	25
1975	15
1976	40
1977	36
1978	37
1979	28
1980	33
1981	20
1982	32
1983	76
1984	66
1985	28
1986	33
1987	22
1988	34
1989	38
1990	14
1991	17
1992	81
1993	23
1994	42
1995	41
1996	37
1997	47
1998	33
1999	43
2000	17
2001	5

All-Time Record Progression

1 new records

1 all-time records were set at Sisimiut between 16 July 1998 and 16 July 1998. Each dot is a new record.

Wettest Day of Each Month

Sep: 93.2 mm (3.7 in)

The wettest day on record for each calendar month at Sisimiut. The most was 93.2 mm (3.7 in) on 13 September 1976.

Record daily precipitation for each month at Sisimiut
Month	Record daily precipitation (mm)	Date
Jan	33.4 mm (1.3 in)	7 January 1967
Feb	38.0 mm (1.5 in)	28 February 2001
Mar	58.0 mm (2.3 in)	17 March 1998
Apr	68.0 mm (2.7 in)	20 April 1983
May	60.0 mm (2.4 in)	11 May 1999
Jun	55.0 mm (2.2 in)	23 June 1989
Jul	49.0 mm (1.9 in)	27 July 1991
Aug	70.0 mm (2.8 in)	4 August 1986
Sep	93.2 mm (3.7 in)	13 September 1976
Oct	59.0 mm (2.3 in)	1 October 1974
Nov	55.0 mm (2.2 in)	23 November 1987
Dec	45.1 mm (1.8 in)	31 December 1969

Period of Record Coverage

1961 to 2001

41 years of record at Sisimiut, 1961 to 2001. 17 years have data for under 90 percent of days and are left out of rankings: 1961, 1962, 1963, 1981, 1982, 1983, 1984, 1985 and others.

Days with data per year at Sisimiut
Year	Days with data	Share of year	Complete
1961	321	88%	No
1962	324	89%	No
1963	327	90%	No
1964	364	99%	Yes
1965	363	99%	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	365	100%	Yes
1973	363	99%	Yes
1974	365	100%	Yes
1975	364	100%	Yes
1976	334	91%	Yes
1977	345	95%	Yes
1978	365	100%	Yes
1979	364	100%	Yes
1980	356	97%	Yes
1981	328	90%	No
1982	172	47%	No
1983	313	86%	No
1984	316	86%	No
1985	323	88%	No
1986	326	89%	No
1987	307	84%	No
1988	305	83%	No
1989	276	76%	No
1990	309	85%	No
1991	289	79%	No
1992	235	64%	No
1993	146	40%	No
1994	362	99%	Yes
1995	365	100%	Yes
1996	348	95%	Yes
1997	347	95%	Yes
1998	331	91%	Yes
1999	335	92%	Yes
2000	330	90%	Yes
2001	160	44%	No

Latest Records

Latest records at Sisimiut
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 June 2001	Sisimiut, GL	daily high min	3.4 C (38.1 F)	0.2 C (0.4 F)	26 years	11 of 100 (Routine)
13 June 2001	Sisimiut, GL	daily rain	31.0 mm (1.2 in)	20.8 mm (0.8 in)	35 years	43 of 100 (Notable)
15 May 2001	Sisimiut, GL	daily rain	9.0 mm (0.35 in)	5.8 mm (0.23 in)	24 years	20 of 100 (Routine)
14 May 2001	Sisimiut, GL	daily rain	20.0 mm (0.8 in)	15.0 mm (0.6 in)	28 years	20 of 100 (Routine)
18 April 2001	Sisimiut, GL	daily high min	0.8 C (33.4 F)	1.2 C (2.2 F)	4 years	7 of 100 (Routine)
15 April 2001	Sisimiut, GL	daily high min	-0.1 C (31.8 F)	0.5 C (0.9 F)	2 years	4 of 100 (Routine)
14 April 2001	Sisimiut, GL	daily high max	4.9 C (40.8 F)	0.4 C (0.7 F)	15 years	8 of 100 (Routine)
28 February 2001	Sisimiut, GL	monthly rain	38.0 mm (1.5 in)	18.0 mm (0.7 in)	18 years	59 of 100 (Notable)
28 February 2001	Sisimiut, GL	daily high min	0.0 C (32.0 F)	3.6 C (6.5 F)	15 years	12 of 100 (Routine)
14 December 2000	Sisimiut, GL	daily high min	-4.9 C (23.2 F)	0.7 C (1.3 F)	1 year	5 of 100 (Routine)
20 November 2000	Sisimiut, GL	daily high max	7.8 C (46.0 F)	2.0 C (3.6 F)	23 years	14 of 100 (Routine)
12 November 2000	Sisimiut, GL	daily high min	-0.1 C (31.8 F)	0.7 C (1.3 F)	4 years	6 of 100 (Routine)
24 October 2000	Sisimiut, GL	daily rain	16.0 mm (0.6 in)	5.5 mm (0.22 in)	28 years	20 of 100 (Routine)
24 September 2000	Sisimiut, GL	daily high min	4.6 C (40.3 F)	0.1 C (0.2 F)	24 years	11 of 100 (Routine)
18 September 2000	Sisimiut, GL	daily high max	12.1 C (53.8 F)	3.1 C (5.6 F)	21 years	20 of 100 (Routine)
4 September 2000	Sisimiut, GL	daily high max	13.7 C (56.7 F)	1.2 C (2.2 F)	36 years	18 of 100 (Routine)
4 September 2000	Sisimiut, GL	daily high min	7.0 C (44.6 F)	1.1 C (2.0 F)	5 years	9 of 100 (Routine)
19 August 2000	Sisimiut, GL	daily high max	17.7 C (63.9 F)	3.2 C (5.8 F)	15 years	18 of 100 (Routine)
19 August 2000	Sisimiut, GL	daily high min	7.3 C (45.1 F)	0.3 C (0.5 F)	38 years	16 of 100 (Routine)
10 June 2000	Sisimiut, GL	daily low min	-2.0 C (28.4 F)	0.2 C (0.4 F)	36 years	14 of 100 (Routine)

Climate Trend

26 complete years, 1961 to 1998

One stripe for each of 26 complete years at Sisimiut, 1961 to 1998. Blue stripes are years cooler than the station's own mean of -3.4 C (25.8 F); red stripes are warmer. The coolest year was 1983, at -6.4 C (20.5 F), and the warmest was 1980, at -1.7 C (29.0 F). The strongest colour marks a difference of 3.0 C (5.4 F).

Annual mean temperature at Sisimiut as warming stripes, 1961 to 1998
Year	Annual mean temperature	Difference from the station mean
1961	-3.3 C	+0.15 C
1964	-3.2 C	+0.25 C
1965	-2.0 C	+1.46 C
1966	-2.7 C	+0.70 C
1967	-3.7 C	-0.32 C
1968	-3.2 C	+0.21 C
1969	-2.8 C	+0.65 C
1970	-3.8 C	-0.34 C
1971	-5.2 C	-1.82 C
1972	-5.7 C	-2.26 C
1973	-3.4 C	+0.06 C
1974	-3.5 C	-0.04 C
1975	-4.0 C	-0.58 C
1978	-3.3 C	+0.11 C
1979	-1.9 C	+1.47 C
1980	-1.7 C	+1.76 C
1981	-3.5 C	-0.04 C
1983	-6.4 C	-2.96 C
1985	-1.9 C	+1.56 C
1986	-2.6 C	+0.79 C
1987	-3.8 C	-0.34 C
1988	-2.5 C	+0.89 C
1994	-4.7 C	-1.25 C
1995	-3.9 C	-0.44 C
1997	-3.5 C	-0.05 C
1998	-3.0 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

1961 to 2001

Yearly extremes at Sisimiut: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	23.8 C (74.8 F)	1968	17.5 C (63.5 F)	41
Coldest night (TNn)	-38.8 C (-37.8 F)	1984	-29.0 C (-20.2 F)	41
Wettest day (Rx1day)	93.2 mm (3.7 in)	1976	39.0 mm (1.5 in)	41
Wettest five days (Rx5day)	193.5 mm (7.6 in)	1976	61.9 mm (2.4 in)	40
Longest dry spell (CDD)	58 days	1990	26 days	41

Hottest day (TXx)

The hottest day of the year at Sisimiut, 1961 to 2001. The record is 23.8 C (74.8 F) in 1968, marked on the chart; the median year is 17.5 C (63.5 F).

Hottest day (TXx) at Sisimiut by year
Year	Hottest day (TXx)
1961	18.7 C (65.7 F)
1962	17.5 C (63.5 F)
1963	16.6 C (61.9 F)
1964	20.5 C (68.9 F)
1965	17.3 C (63.1 F)
1966	17.6 C (63.7 F)
1967	15.7 C (60.3 F)
1968	23.8 C (74.8 F)
1969	17.0 C (62.6 F)
1970	19.0 C (66.2 F)
1971	16.1 C (61.0 F)
1972	15.5 C (59.9 F)
1973	20.2 C (68.4 F)
1974	18.5 C (65.3 F)
1975	17.7 C (63.9 F)
1976	15.1 C (59.2 F)
1977	18.8 C (65.8 F)
1978	19.8 C (67.6 F)
1979	19.0 C (66.2 F)
1980	17.5 C (63.5 F)
1981	15.2 C (59.4 F)
1982	16.8 C (62.2 F)
1983	19.0 C (66.2 F)
1984	19.5 C (67.1 F)
1985	21.0 C (69.8 F)
1986	22.0 C (71.6 F)
1987	16.4 C (61.5 F)
1988	15.2 C (59.4 F)
1989	15.8 C (60.4 F)
1990	16.8 C (62.2 F)
1991	18.5 C (65.3 F)
1992	16.2 C (61.2 F)
1993	16.0 C (60.8 F)
1994	16.5 C (61.7 F)
1995	17.9 C (64.2 F)
1996	16.8 C (62.2 F)
1997	16.9 C (62.4 F)
1998	18.5 C (65.3 F)
1999	18.3 C (64.9 F)
2000	17.7 C (63.9 F)
2001	11.3 C (52.3 F)

Coldest night (TNn)

The coldest night of the year at Sisimiut, 1961 to 2001. The record is -38.8 C (-37.8 F) in 1984, marked on the chart; the median year is -29.0 C (-20.2 F).

Coldest night (TNn) at Sisimiut by year
Year	Coldest night (TNn)
1961	-26.0 C (-14.8 F)
1962	-30.6 C (-23.1 F)
1963	-24.9 C (-12.8 F)
1964	-31.4 C (-24.5 F)
1965	-25.0 C (-13.0 F)
1966	-24.0 C (-11.2 F)
1967	-25.2 C (-13.4 F)
1968	-31.2 C (-24.2 F)
1969	-31.6 C (-24.9 F)
1970	-27.5 C (-17.5 F)
1971	-31.6 C (-24.9 F)
1972	-31.4 C (-24.5 F)
1973	-28.1 C (-18.6 F)
1974	-26.3 C (-15.3 F)
1975	-28.0 C (-18.4 F)
1976	-30.0 C (-22.0 F)
1977	-24.8 C (-12.6 F)
1978	-22.8 C (-9.0 F)
1979	-25.6 C (-14.1 F)
1980	-21.5 C (-6.7 F)
1981	-30.7 C (-23.3 F)
1982	-33.0 C (-27.4 F)
1983	-35.0 C (-31.0 F)
1984	-38.8 C (-37.8 F)
1985	-27.0 C (-16.6 F)
1986	-26.0 C (-14.8 F)
1987	-31.8 C (-25.2 F)
1988	-25.2 C (-13.4 F)
1989	-36.6 C (-33.9 F)
1990	-28.1 C (-18.6 F)
1991	-29.0 C (-20.2 F)
1992	-38.5 C (-37.3 F)
1993	-37.8 C (-36.0 F)
1994	-31.3 C (-24.3 F)
1995	-32.1 C (-25.8 F)
1996	-29.5 C (-21.1 F)
1997	-33.7 C (-28.7 F)
1998	-32.9 C (-27.2 F)
1999	-27.5 C (-17.5 F)
2000	-25.3 C (-13.5 F)
2001	-25.6 C (-14.1 F)

Wettest day (Rx1day)

The wettest day of the year at Sisimiut, 1961 to 2001. The record is 93.2 mm (3.7 in) in 1976, marked on the chart; the median year is 39.0 mm (1.5 in).

Wettest day (Rx1day) at Sisimiut by year
Year	Wettest day (Rx1day)
1961	19.3 mm (0.8 in)
1962	35.3 mm (1.4 in)
1963	13.2 mm (0.5 in)
1964	24.7 mm (1.0 in)
1965	14.9 mm (0.6 in)
1966	22.8 mm (0.9 in)
1967	35.1 mm (1.4 in)
1968	42.4 mm (1.7 in)
1969	45.1 mm (1.8 in)
1970	29.2 mm (1.1 in)
1971	39.9 mm (1.6 in)
1972	43.9 mm (1.7 in)
1973	52.8 mm (2.1 in)
1974	59.0 mm (2.3 in)
1975	26.0 mm (1.0 in)
1976	93.2 mm (3.7 in)
1977	43.0 mm (1.7 in)
1978	32.2 mm (1.3 in)
1979	28.0 mm (1.1 in)
1980	21.5 mm (0.8 in)
1981	48.5 mm (1.9 in)
1982	51.2 mm (2.0 in)
1983	68.0 mm (2.7 in)
1984	33.0 mm (1.3 in)
1985	54.2 mm (2.1 in)
1986	82.0 mm (3.2 in)
1987	55.0 mm (2.2 in)
1988	39.0 mm (1.5 in)
1989	55.0 mm (2.2 in)
1990	41.2 mm (1.6 in)
1991	49.0 mm (1.9 in)
1992	19.2 mm (0.8 in)
1993	24.0 mm (0.9 in)
1994	18.0 mm (0.7 in)
1995	24.0 mm (0.9 in)
1996	41.0 mm (1.6 in)
1997	30.0 mm (1.2 in)
1998	58.0 mm (2.3 in)
1999	60.0 mm (2.4 in)
2000	18.0 mm (0.7 in)
2001	38.0 mm (1.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Sisimiut, 1961 to 2001. The record is 193.5 mm (7.6 in) in 1976, marked on the chart; the median year is 61.9 mm (2.4 in).

Wettest five days (Rx5day) at Sisimiut by year
Year	Wettest five days (Rx5day)
1961	32.1 mm (1.3 in)
1962	41.1 mm (1.6 in)
1963	21.7 mm (0.9 in)
1964	44.5 mm (1.8 in)
1965	37.3 mm (1.5 in)
1966	35.9 mm (1.4 in)
1967	105.1 mm (4.1 in)
1968	61.8 mm (2.4 in)
1969	80.1 mm (3.2 in)
1970	92.7 mm (3.6 in)
1971	68.0 mm (2.7 in)
1972	93.5 mm (3.7 in)
1973	89.3 mm (3.5 in)
1974	68.8 mm (2.7 in)
1975	51.9 mm (2.0 in)
1976	193.5 mm (7.6 in)
1977	63.7 mm (2.5 in)
1978	59.3 mm (2.3 in)
1979	50.0 mm (2.0 in)
1980	45.6 mm (1.8 in)
1981	62.0 mm (2.4 in)
1982	61.7 mm (2.4 in)
1983	97.1 mm (3.8 in)
1984	50.8 mm (2.0 in)
1985	62.1 mm (2.4 in)
1986	150.0 mm (5.9 in)
1987	71.0 mm (2.8 in)
1988	67.4 mm (2.7 in)
1989	64.7 mm (2.5 in)
1990	77.5 mm (3.1 in)
1991	83.8 mm (3.3 in)
1992	32.5 mm (1.3 in)
1993	37.0 mm (1.5 in)
1994	33.0 mm (1.3 in)
1995	22.3 mm (0.9 in)
1996	69.5 mm (2.7 in)
1997	39.0 mm (1.5 in)
1998	72.8 mm (2.9 in)
1999	50.0 mm (2.0 in)
2000	21.0 mm (0.8 in)
2001	n/a

Longest dry spell (CDD)

The longest dry spell of the year at Sisimiut, 1961 to 2001. The record is 58 days in 1990, marked on the chart; the median year is 26 days.

Longest dry spell (CDD) at Sisimiut by year
Year	Longest dry spell (CDD)
1961	34 days
1962	26 days
1963	42 days
1964	42 days
1965	41 days
1966	39 days
1967	20 days
1968	47 days
1969	28 days
1970	24 days
1971	26 days
1972	26 days
1973	21 days
1974	28 days
1975	23 days
1976	29 days
1977	36 days
1978	20 days
1979	17 days
1980	30 days
1981	24 days
1982	22 days
1983	30 days
1984	33 days
1985	46 days
1986	22 days
1987	21 days
1988	21 days
1989	29 days
1990	58 days
1991	42 days
1992	56 days
1993	21 days
1994	33 days
1995	3 days
1996	2 days
1997	24 days
1998	6 days
1999	4 days
2000	3 days
2001	2 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 Sisimiut falls on 22 June and the median first autumn frost on 29 August, which leaves a median of 68 days between them.

Fitted over all years, the growing season changes by +7.7 days per decade at this station.

Frost dates and growing season at Sisimiut
Measure	Median, all years	Earliest period	Recent period (1961 to 1998)	Recent against earliest	Fitted trend
Last spring frost	22 June	n/a	22 June	n/a	-2.1 days per decade
First autumn frost	29 August	n/a	29 August	n/a	+5.6 days per decade
Growing days	68 days	n/a	68 days	n/a	+7.7 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.

Rainfall Return Levels

32 years, 1961 to 1992

A day with at least 38.7 mm (1.5 in) of rain is expected about once in 2 years. A day with at least 95.9 mm (3.8 in) of rain is expected about once in 100 years.

Rainfall return levels at Sisimiut: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	38.7 mm (1.5 in)
5 years	55.4 mm (2.2 in)
10 years	65.9 mm (2.6 in)
25 years	78.5 mm (3.1 in)
50 years	87.4 mm (3.4 in)	Longer than the 32 years of record
100 years	95.9 mm (3.8 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 1961 to 1992.

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: 93.2 mm (3.7 in) in 1976; 82.0 mm (3.2 in) in 1986; 68.0 mm (2.7 in) in 1983.

Download the Data

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