Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Kemionsaari Vano. The lines show the 2026 daily maximum and minimum. 4 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Kemionsaari Vano, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
7.7 C (45.9 F)
-24.8 C (-12.6 F)
3.4 C (38.1 F)
-12.6 C (9.3 F)
Feb
6.8 C (44.2 F)
-23.5 C (-10.3 F)
2.8 C (37.0 F)
-16.9 C (1.6 F)
Mar
9.9 C (49.8 F)
-19.1 C (-2.4 F)
5.8 C (42.4 F)
-2.8 C (27.0 F)
Apr
18.7 C (65.7 F)
-10.5 C (13.1 F)
14.8 C (58.6 F)
-1.1 C (30.0 F)
May
25.1 C (77.2 F)
-1.2 C (29.8 F)
17.0 C (62.6 F)
1.6 C (34.9 F)
Jun
28.8 C (83.8 F)
4.3 C (39.7 F)
24.2 C (75.6 F)
9.4 C (48.9 F)
Jul
31.3 C (88.3 F)
8.4 C (47.1 F)
25.3 C (77.5 F)
11.4 C (52.5 F)
Aug
29.1 C (84.4 F)
7.8 C (46.0 F)
21.8 C (71.2 F)
11.8 C (53.2 F)
Sep
24.3 C (75.7 F)
3.5 C (38.3 F)
n/a
n/a
Oct
16.4 C (61.5 F)
-3.9 C (25.0 F)
n/a
n/a
Nov
13.0 C (55.4 F)
-12.0 C (10.4 F)
n/a
n/a
Dec
9.6 C (49.3 F)
-18.5 C (-1.3 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Kemionsaari Vano still stand. 2020 holds the most, with 99.
Standing records at Kemionsaari Vano by the year they were set
Year set
Standing records
1993
45
1994
32
1995
32
1996
81
1997
28
1998
49
1999
32
2000
44
2001
30
2002
72
2003
52
2004
30
2005
25
2006
53
2007
29
2008
32
2009
26
2010
67
2011
46
2012
19
2013
34
2014
50
2015
42
2016
33
2017
22
2018
46
2019
44
2020
99
2021
52
2022
38
2023
43
2024
63
2025
67
2026
7
Period of Record Coverage
1993 to 2026
Complete yearUnder 90 percent of days
34 years of record at Kemionsaari Vano, 1993 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 1993, 2026.
Cooler than the station meanWarmer than the station mean
One stripe for each of 30 complete years at Kemionsaari Vano, 1994 to 2025. Blue stripes are years cooler than the station's own mean of 7.1 C (44.9 F); red stripes are warmer. The coolest year was 2010, at 5.2 C (41.4 F), and the warmest was 2020, at 9.2 C (48.5 F). The strongest colour marks a difference of 2.1 C (3.8 F).
Annual mean temperature at Kemionsaari Vano as warming stripes, 1994 to 2025
Year
Annual mean temperature
Difference from the station mean
1994
5.8 C
-1.32 C
1995
6.9 C
-0.22 C
1996
5.2 C
-1.91 C
1997
7.0 C
-0.13 C
1998
6.2 C
-0.99 C
1999
7.0 C
-0.14 C
2000
7.7 C
+0.58 C
2001
6.7 C
-0.46 C
2002
6.9 C
-0.23 C
2003
6.1 C
-1.07 C
2004
6.9 C
-0.29 C
2005
7.2 C
+0.06 C
2006
7.1 C
-0.03 C
2008
8.0 C
+0.86 C
2009
6.7 C
-0.45 C
2010
5.2 C
-1.94 C
2011
7.3 C
+0.18 C
2012
6.5 C
-0.63 C
2013
6.9 C
-0.22 C
2015
8.3 C
+1.13 C
2016
7.3 C
+0.12 C
2017
7.3 C
+0.12 C
2018
7.7 C
+0.50 C
2019
7.9 C
+0.75 C
2020
9.2 C
+2.02 C
2021
7.2 C
+0.05 C
2022
7.9 C
+0.77 C
2023
7.5 C
+0.39 C
2024
8.1 C
+0.97 C
2025
8.6 C
+1.47 C
The annual mean temperature here has risen by 0.6 C (0.3 to 0.9) per decade over 1994 to 2025. In Fahrenheit: 1.1 F (0.6 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 Kemionsaari Vano
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.6 C (0.3 to 0.9) per decade
1.1 F (0.6 to 1.6) per decade
1994 to 2025
30
Rise
Mean daily maximum
0.6 C (0.3 to 0.8) per decade
1.0 F (0.6 to 1.5) per decade
1994 to 2025
30
Rise
Mean daily minimum
0.6 C (0.3 to 0.9) per decade
1.1 F (0.5 to 1.7) per decade
1994 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
1993 to 2026
Yearly extremes at Kemionsaari Vano: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
31.3 C (88.3 F)
2021
26.0 C (78.8 F)
34
Coldest night (TNn)
-24.8 C (-12.6 F)
2003
-15.1 C (4.7 F)
34
Hottest day (TXx)
The hottest day of the year at Kemionsaari Vano, 1993 to 2026. The record is 31.3 C (88.3 F) in 2021, marked on the chart; the median year is 26.0 C (78.8 F).
Hottest day (TXx) at Kemionsaari Vano by year
Year
Hottest day (TXx)
1993
23.3 C (73.9 F)
1994
27.0 C (80.6 F)
1995
26.0 C (78.8 F)
1996
24.8 C (76.6 F)
1997
27.4 C (81.3 F)
1998
22.1 C (71.8 F)
1999
25.8 C (78.4 F)
2000
23.1 C (73.6 F)
2001
25.7 C (78.3 F)
2002
26.0 C (78.8 F)
2003
27.6 C (81.7 F)
2004
25.4 C (77.7 F)
2005
26.5 C (79.7 F)
2006
25.8 C (78.4 F)
2007
24.2 C (75.6 F)
2008
25.2 C (77.4 F)
2009
26.9 C (80.4 F)
2010
28.3 C (82.9 F)
2011
28.1 C (82.6 F)
2012
23.1 C (73.6 F)
2013
25.4 C (77.7 F)
2014
28.8 C (83.8 F)
2015
23.6 C (74.5 F)
2016
24.4 C (75.9 F)
2017
23.9 C (75.0 F)
2018
30.9 C (87.6 F)
2019
29.4 C (84.9 F)
2020
27.7 C (81.9 F)
2021
31.3 C (88.3 F)
2022
28.8 C (83.8 F)
2023
27.6 C (81.7 F)
2024
26.3 C (79.3 F)
2025
28.2 C (82.8 F)
2026
25.3 C (77.5 F)
Coldest night (TNn)
The coldest night of the year at Kemionsaari Vano, 1993 to 2026. The record is -24.8 C (-12.6 F) in 2003, marked on the chart; the median year is -15.1 C (4.7 F).
Coldest night (TNn) at Kemionsaari Vano by year
Year
Coldest night (TNn)
1993
-12.3 C (9.9 F)
1994
-19.8 C (-3.6 F)
1995
-12.7 C (9.1 F)
1996
-19.5 C (-3.1 F)
1997
-15.2 C (4.6 F)
1998
-15.1 C (4.8 F)
1999
-22.2 C (-8.0 F)
2000
-8.9 C (16.0 F)
2001
-20.4 C (-4.7 F)
2002
-17.9 C (-0.2 F)
2003
-24.8 C (-12.6 F)
2004
-13.9 C (7.0 F)
2005
-14.8 C (5.4 F)
2006
-19.1 C (-2.4 F)
2007
-19.1 C (-2.4 F)
2008
-7.6 C (18.3 F)
2009
-12.0 C (10.4 F)
2010
-19.5 C (-3.1 F)
2011
-23.5 C (-10.3 F)
2012
-18.0 C (-0.4 F)
2013
-17.1 C (1.2 F)
2014
-13.3 C (8.1 F)
2015
-9.2 C (15.4 F)
2016
-18.3 C (-0.9 F)
2017
-15.3 C (4.5 F)
2018
-17.3 C (0.9 F)
2019
-12.3 C (9.9 F)
2020
-5.5 C (22.1 F)
2021
-14.8 C (5.4 F)
2022
-10.4 C (13.3 F)
2023
-10.3 C (13.5 F)
2024
-14.8 C (5.4 F)
2025
-8.6 C (16.5 F)
2026
-16.9 C (1.6 F)
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 Kemionsaari Vano falls on 20 April and the median first autumn frost on 8 November, which leaves a median of 204 days between them.
Fitted over all years, the growing season changes by +4.2 days per decade at this station.
Frost dates and growing season at Kemionsaari Vano
Measure
Median, all years
Earliest period
Recent period (1994 to 2025)
Recent against earliest
Fitted trend
Last spring frost
20 April
n/a
20 April
n/a
-2.5 days per decade
First autumn frost
8 November
n/a
8 November
n/a
+1.7 days per decade
Growing days
204 days
n/a
204 days
n/a
+4.2 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 Kemionsaari Vano standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Kemionsaari Vano 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 2026-10-12 (12 October 2026). Records are computed by this site and are not official.