Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Kolmarden-Stromsfors. The lines show the 2026 daily maximum and minimum. 13 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Kolmarden-Stromsfors, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
10.8 C (51.4 F)
-20.2 C (-4.4 F)
3.0 C (37.4 F)
-11.2 C (11.8 F)
Feb
12.6 C (54.7 F)
-23.0 C (-9.4 F)
7.7 C (45.9 F)
-15.3 C (4.5 F)
Mar
18.3 C (64.9 F)
-15.1 C (4.8 F)
13.8 C (56.8 F)
-1.5 C (29.3 F)
Apr
25.9 C (78.6 F)
-8.7 C (16.3 F)
21.9 C (71.4 F)
-2.5 C (27.5 F)
May
28.8 C (83.8 F)
-2.5 C (27.5 F)
25.3 C (77.5 F)
0.4 C (32.7 F)
Jun
34.3 C (93.7 F)
1.5 C (34.7 F)
30.2 C (86.4 F)
8.6 C (47.5 F)
Jul
34.0 C (93.2 F)
6.2 C (43.2 F)
32.7 C (90.9 F)
8.5 C (47.3 F)
Aug
32.9 C (91.2 F)
4.5 C (40.1 F)
31.2 C (88.2 F)
9.8 C (49.6 F)
Sep
27.7 C (81.9 F)
-0.1 C (31.8 F)
n/a
n/a
Oct
20.5 C (68.9 F)
-6.9 C (19.6 F)
n/a
n/a
Nov
15.7 C (60.3 F)
-13.3 C (8.1 F)
n/a
n/a
Dec
11.9 C (53.4 F)
-20.2 C (-4.4 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Kolmarden-Stromsfors still stand. 2018 holds the most, with 76.
Standing records at Kolmarden-Stromsfors by the year they were set
Year set
Standing records
1995
4
1996
44
1997
58
1998
64
1999
40
2000
45
2001
46
2002
51
2003
47
2004
39
2005
40
2006
60
2007
44
2008
30
2009
43
2010
71
2011
35
2012
45
2013
39
2014
50
2015
46
2016
56
2017
31
2018
76
2019
48
2020
64
2021
44
2022
39
2023
42
2024
54
2025
40
2026
29
Wettest Day of Each Month
Sep: 72.8 mm (2.9 in)
The wettest day on record for each calendar month at Kolmarden-Stromsfors. The most was 72.8 mm (2.9 in) on 12 September 1996.
Record daily precipitation for each month at Kolmarden-Stromsfors
Month
Record daily precipitation (mm)
Date
Jan
26.9 mm (1.1 in)
27 January 2010
Feb
22.5 mm (0.9 in)
10 February 2011
Mar
19.0 mm (0.7 in)
24 March 2023
Apr
27.3 mm (1.1 in)
17 April 1999
May
29.8 mm (1.2 in)
29 May 2013
Jun
34.6 mm (1.4 in)
13 June 2026
Jul
41.7 mm (1.6 in)
9 July 1996
Aug
65.6 mm (2.6 in)
28 August 2019
Sep
72.8 mm (2.9 in)
12 September 1996
Oct
35.4 mm (1.4 in)
26 October 2000
Nov
26.2 mm (1.0 in)
27 November 2012
Dec
27.6 mm (1.1 in)
1 December 1997
Period of Record Coverage
1995 to 2026
Complete yearUnder 90 percent of days
32 years of record at Kolmarden-Stromsfors, 1995 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 1995, 2026.
Cooler than the station meanWarmer than the station mean
One stripe for each of 30 complete years at Kolmarden-Stromsfors, 1996 to 2025. Blue stripes are years cooler than the station's own mean of 7.4 C (45.3 F); red stripes are warmer. The coolest year was 2010, at 5.2 C (41.3 F), and the warmest was 2020, at 9.1 C (48.4 F). The strongest colour marks a difference of 2.3 C (4.1 F).
Annual mean temperature at Kolmarden-Stromsfors as warming stripes, 1996 to 2025
Year
Annual mean temperature
Difference from the station mean
1996
5.6 C
-1.85 C
1997
7.1 C
-0.29 C
1998
6.1 C
-1.34 C
1999
7.2 C
-0.19 C
2000
7.8 C
+0.39 C
2001
6.7 C
-0.72 C
2002
7.4 C
+0.01 C
2003
7.0 C
-0.43 C
2004
6.9 C
-0.48 C
2005
7.2 C
-0.24 C
2006
7.9 C
+0.44 C
2007
7.5 C
+0.11 C
2008
7.7 C
+0.32 C
2009
6.9 C
-0.52 C
2010
5.2 C
-2.23 C
2011
7.7 C
+0.31 C
2012
6.6 C
-0.85 C
2013
7.1 C
-0.31 C
2014
8.2 C
+0.82 C
2015
8.1 C
+0.66 C
2016
7.7 C
+0.30 C
2017
7.4 C
+0.02 C
2018
8.2 C
+0.75 C
2019
8.1 C
+0.66 C
2020
9.1 C
+1.70 C
2021
7.5 C
+0.05 C
2022
8.2 C
+0.76 C
2023
7.5 C
+0.12 C
2024
8.2 C
+0.78 C
2025
8.6 C
+1.22 C
The annual mean temperature here has risen by 0.6 C (0.3 to 0.9) per decade over 1996 to 2025. In Fahrenheit: 1.0 F (0.5 to 1.6) per decade. The slope is a straight line fitted to 30 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Kolmarden-Stromsfors
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.6 C (0.3 to 0.9) per decade
1.0 F (0.5 to 1.6) per decade
1996 to 2025
30
Rise
Mean daily maximum
0.7 C (0.4 to 1.0) per decade
1.2 F (0.6 to 1.8) per decade
1996 to 2025
30
Rise
Mean daily minimum
0.5 C (0.2 to 0.8) per decade
0.9 F (0.4 to 1.4) per decade
1996 to 2025
30
Rise
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
1995 to 2026
Yearly extremes at Kolmarden-Stromsfors: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
34.3 C (93.7 F)
2021
30.1 C (86.1 F)
32
Coldest night (TNn)
-23.0 C (-9.4 F)
2001
-15.7 C (3.7 F)
32
Wettest day (Rx1day)
72.8 mm (2.9 in)
1996
30.1 mm (1.2 in)
32
Wettest five days (Rx5day)
83.2 mm (3.3 in)
2002
55.7 mm (2.2 in)
32
Longest dry spell (CDD)
41 days
2021
22 days
32
Hottest day (TXx)
The hottest day of the year at Kolmarden-Stromsfors, 1995 to 2026. The record is 34.3 C (93.7 F) in 2021, marked on the chart; the median year is 30.1 C (86.1 F).
Hottest day (TXx) at Kolmarden-Stromsfors by year
Year
Hottest day (TXx)
1995
1.7 C (35.1 F)
1996
27.7 C (81.9 F)
1997
29.2 C (84.6 F)
1998
24.7 C (76.5 F)
1999
31.5 C (88.7 F)
2000
29.1 C (84.4 F)
2001
30.6 C (87.1 F)
2002
28.6 C (83.5 F)
2003
29.1 C (84.4 F)
2004
29.4 C (84.9 F)
2005
31.6 C (88.9 F)
2006
31.8 C (89.2 F)
2007
32.4 C (90.3 F)
2008
30.3 C (86.5 F)
2009
30.0 C (86.0 F)
2010
33.8 C (92.8 F)
2011
28.7 C (83.7 F)
2012
27.7 C (81.9 F)
2013
28.1 C (82.6 F)
2014
32.1 C (89.8 F)
2015
30.1 C (86.2 F)
2016
31.9 C (89.4 F)
2017
28.1 C (82.6 F)
2018
32.9 C (91.2 F)
2019
30.9 C (87.6 F)
2020
31.2 C (88.2 F)
2021
34.3 C (93.7 F)
2022
34.0 C (93.2 F)
2023
28.6 C (83.5 F)
2024
29.3 C (84.7 F)
2025
30.0 C (86.0 F)
2026
32.7 C (90.9 F)
Coldest night (TNn)
The coldest night of the year at Kolmarden-Stromsfors, 1995 to 2026. The record is -23.0 C (-9.4 F) in 2001, marked on the chart; the median year is -15.7 C (3.7 F).
Coldest night (TNn) at Kolmarden-Stromsfors by year
Year
Coldest night (TNn)
1995
-15.8 C (3.6 F)
1996
-19.0 C (-2.2 F)
1997
-16.8 C (1.8 F)
1998
-13.8 C (7.2 F)
1999
-20.2 C (-4.4 F)
2000
-13.0 C (8.6 F)
2001
-23.0 C (-9.4 F)
2002
-18.7 C (-1.7 F)
2003
-19.7 C (-3.5 F)
2004
-17.9 C (-0.2 F)
2005
-14.5 C (5.9 F)
2006
-14.4 C (6.1 F)
2007
-16.8 C (1.8 F)
2008
-10.1 C (13.8 F)
2009
-14.9 C (5.2 F)
2010
-21.3 C (-6.3 F)
2011
-16.9 C (1.6 F)
2012
-17.1 C (1.2 F)
2013
-15.9 C (3.4 F)
2014
-13.1 C (8.4 F)
2015
-7.9 C (17.8 F)
2016
-17.3 C (0.9 F)
2017
-15.6 C (3.9 F)
2018
-15.9 C (3.4 F)
2019
-10.8 C (12.6 F)
2020
-6.0 C (21.2 F)
2021
-15.3 C (4.5 F)
2022
-12.3 C (9.9 F)
2023
-14.6 C (5.7 F)
2024
-17.6 C (0.3 F)
2025
-12.6 C (9.3 F)
2026
-15.3 C (4.5 F)
Wettest day (Rx1day)
The wettest day of the year at Kolmarden-Stromsfors, 1995 to 2026. The record is 72.8 mm (2.9 in) in 1996, marked on the chart; the median year is 30.1 mm (1.2 in).
Wettest day (Rx1day) at Kolmarden-Stromsfors by year
Year
Wettest day (Rx1day)
1995
1.7 mm (0.07 in)
1996
72.8 mm (2.9 in)
1997
27.6 mm (1.1 in)
1998
20.5 mm (0.8 in)
1999
27.3 mm (1.1 in)
2000
35.4 mm (1.4 in)
2001
35.8 mm (1.4 in)
2002
36.2 mm (1.4 in)
2003
22.1 mm (0.9 in)
2004
24.0 mm (0.9 in)
2005
24.2 mm (1.0 in)
2006
47.2 mm (1.9 in)
2007
20.9 mm (0.8 in)
2008
47.2 mm (1.9 in)
2009
27.8 mm (1.1 in)
2010
26.9 mm (1.1 in)
2011
52.7 mm (2.1 in)
2012
32.9 mm (1.3 in)
2013
29.8 mm (1.2 in)
2014
27.0 mm (1.1 in)
2015
22.6 mm (0.9 in)
2016
23.6 mm (0.9 in)
2017
30.4 mm (1.2 in)
2018
13.9 mm (0.5 in)
2019
65.6 mm (2.6 in)
2020
34.1 mm (1.3 in)
2021
25.4 mm (1.0 in)
2022
35.8 mm (1.4 in)
2023
37.9 mm (1.5 in)
2024
33.8 mm (1.3 in)
2025
38.3 mm (1.5 in)
2026
34.6 mm (1.4 in)
Wettest five days (Rx5day)
The wettest five days of the year at Kolmarden-Stromsfors, 1995 to 2026. The record is 83.2 mm (3.3 in) in 2002, marked on the chart; the median year is 55.7 mm (2.2 in).
Wettest five days (Rx5day) at Kolmarden-Stromsfors by year
Year
Wettest five days (Rx5day)
1995
3.0 mm (0.12 in)
1996
82.9 mm (3.3 in)
1997
51.3 mm (2.0 in)
1998
41.2 mm (1.6 in)
1999
63.4 mm (2.5 in)
2000
65.9 mm (2.6 in)
2001
47.8 mm (1.9 in)
2002
83.2 mm (3.3 in)
2003
57.1 mm (2.2 in)
2004
42.1 mm (1.7 in)
2005
52.4 mm (2.1 in)
2006
77.8 mm (3.1 in)
2007
43.0 mm (1.7 in)
2008
80.8 mm (3.2 in)
2009
60.4 mm (2.4 in)
2010
55.0 mm (2.2 in)
2011
73.8 mm (2.9 in)
2012
53.8 mm (2.1 in)
2013
41.8 mm (1.6 in)
2014
47.4 mm (1.9 in)
2015
40.3 mm (1.6 in)
2016
41.2 mm (1.6 in)
2017
49.2 mm (1.9 in)
2018
42.3 mm (1.7 in)
2019
82.7 mm (3.3 in)
2020
56.7 mm (2.2 in)
2021
70.8 mm (2.8 in)
2022
49.3 mm (1.9 in)
2023
68.2 mm (2.7 in)
2024
62.9 mm (2.5 in)
2025
56.3 mm (2.2 in)
2026
56.5 mm (2.2 in)
Longest dry spell (CDD)
The longest dry spell of the year at Kolmarden-Stromsfors, 1995 to 2026. The record is 41 days in 2021, marked on the chart; the median year is 22 days.
Longest dry spell (CDD) at Kolmarden-Stromsfors by year
Year
Longest dry spell (CDD)
1995
8 days
1996
24 days
1997
28 days
1998
13 days
1999
20 days
2000
20 days
2001
18 days
2002
30 days
2003
29 days
2004
17 days
2005
21 days
2006
20 days
2007
16 days
2008
31 days
2009
24 days
2010
15 days
2011
24 days
2012
20 days
2013
23 days
2014
16 days
2015
25 days
2016
20 days
2017
20 days
2018
30 days
2019
30 days
2020
23 days
2021
41 days
2022
38 days
2023
30 days
2024
17 days
2025
21 days
2026
30 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
30 years with a frost
Across 30 years with a frost, the median last spring frost at Kolmarden-Stromsfors falls on 27 April and the median first autumn frost on 20 October, which leaves a median of 173 days between them.
Fitted over all years, the growing season changes by +2.0 days per decade at this station.
Frost dates and growing season at Kolmarden-Stromsfors
Measure
Median, all years
Earliest period
Recent period (1996 to 2025)
Recent against earliest
Fitted trend
Last spring frost
27 April
n/a
27 April
n/a
+0.5 days per decade
First autumn frost
20 October
n/a
20 October
n/a
+2.5 days per decade
Growing days
173 days
n/a
173 days
n/a
+2.0 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
30 years, 1996 to 2025
A day with at least 30.0 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 84.1 mm (3.3 in) of rain is expected about once in 100 years.
Rainfall return levels at Kolmarden-Stromsfors: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
30.0 mm (1.2 in)
5 years
40.9 mm (1.6 in)
10 years
49.3 mm (1.9 in)
25 years
61.7 mm (2.4 in)
50 years
72.3 mm (2.8 in)
Longer than the 30 years of record
100 years
84.1 mm (3.3 in)
Longer than the 30 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, 30 years of values from 1996 to 2025.
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: 72.8 mm (2.9 in) in 1996; 65.6 mm (2.6 in) in 2019; 52.7 mm (2.1 in) in 2011.
Download the Data
Data for Kolmarden-Stromsfors standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Kolmarden-Stromsfors 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.