Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Kemi Ajos. The lines show the 2026 daily maximum and minimum. 15 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Kemi Ajos, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
5.2 C (41.4 F)
-37.1 C (-34.8 F)
0.8 C (33.4 F)
-26.9 C (-16.4 F)
Feb
5.4 C (41.7 F)
-33.8 C (-28.8 F)
-2.1 C (28.2 F)
-26.5 C (-15.7 F)
Mar
7.1 C (44.8 F)
-28.5 C (-19.3 F)
5.4 C (41.7 F)
-15.0 C (5.0 F)
Apr
16.5 C (61.7 F)
-20.5 C (-4.9 F)
10.8 C (51.4 F)
-3.6 C (25.5 F)
May
27.4 C (81.3 F)
-9.3 C (15.3 F)
22.6 C (72.7 F)
1.1 C (34.0 F)
Jun
28.7 C (83.7 F)
1.9 C (35.4 F)
22.3 C (72.1 F)
7.9 C (46.2 F)
Jul
31.2 C (88.2 F)
6.2 C (43.2 F)
23.9 C (75.0 F)
9.7 C (49.5 F)
Aug
30.1 C (86.2 F)
3.3 C (37.9 F)
19.0 C (66.2 F)
9.3 C (48.7 F)
Sep
24.0 C (75.2 F)
-1.8 C (28.8 F)
n/a
n/a
Oct
16.0 C (60.8 F)
-12.9 C (8.8 F)
n/a
n/a
Nov
8.5 C (47.3 F)
-23.3 C (-9.9 F)
n/a
n/a
Dec
5.3 C (41.5 F)
-30.2 C (-22.4 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Kemi Ajos still stand. 2024 holds the most, with 77.
Standing records at Kemi Ajos by the year they were set
Year set
Standing records
1993
56
1994
19
1995
50
1996
43
1997
59
1998
42
1999
46
2000
35
2001
29
2002
69
2003
31
2004
31
2005
54
2006
60
2007
28
2008
34
2009
32
2010
62
2011
54
2012
43
2013
50
2014
53
2015
33
2016
26
2017
39
2018
39
2019
39
2020
48
2021
35
2022
36
2023
35
2024
77
2025
47
2026
30
Period of Record Coverage
1993 to 2026
Complete yearUnder 90 percent of days
34 years of record at Kemi Ajos, 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 32 complete years at Kemi Ajos, 1994 to 2025. Blue stripes are years cooler than the station's own mean of 2.9 C (37.3 F); red stripes are warmer. The coolest year was 2010, at 1.1 C (34.0 F), and the warmest was 2020, at 4.8 C (40.7 F). The strongest colour marks a difference of 1.9 C (3.4 F).
Annual mean temperature at Kemi Ajos as warming stripes, 1994 to 2025
Year
Annual mean temperature
Difference from the station mean
1994
1.9 C
-1.05 C
1995
2.3 C
-0.67 C
1996
2.0 C
-0.92 C
1997
2.2 C
-0.72 C
1998
1.3 C
-1.70 C
1999
2.1 C
-0.86 C
2000
3.4 C
+0.45 C
2001
2.1 C
-0.81 C
2002
2.0 C
-0.97 C
2003
2.6 C
-0.38 C
2004
2.8 C
-0.11 C
2005
3.6 C
+0.68 C
2006
2.9 C
-0.07 C
2007
3.2 C
+0.26 C
2008
3.4 C
+0.48 C
2009
2.9 C
-0.04 C
2010
1.1 C
-1.84 C
2011
3.6 C
+0.62 C
2012
2.0 C
-0.94 C
2013
3.6 C
+0.63 C
2014
4.3 C
+1.30 C
2015
4.7 C
+1.71 C
2016
3.5 C
+0.59 C
2017
2.7 C
-0.25 C
2018
3.5 C
+0.50 C
2019
2.8 C
-0.18 C
2020
4.8 C
+1.88 C
2021
2.4 C
-0.52 C
2022
3.5 C
+0.55 C
2023
2.8 C
-0.12 C
2024
4.0 C
+1.00 C
2025
4.4 C
+1.46 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 (0.5 to 1.6) per decade. The slope is a straight line fitted to 32 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Kemi Ajos
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 (0.5 to 1.6) per decade
1994 to 2025
32
Rise
Mean daily maximum
0.5 C (0.2 to 0.8) per decade
0.9 F (0.4 to 1.4) per decade
1994 to 2025
32
Rise
Mean daily minimum
0.7 C (0.3 to 1.0) per decade
1.2 F (0.6 to 1.8) per decade
1994 to 2025
32
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 Kemi Ajos: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
31.2 C (88.2 F)
2018
26.3 C (79.3 F)
34
Coldest night (TNn)
-37.1 C (-34.8 F)
1999
-27.3 C (-17.2 F)
34
Hottest day (TXx)
The hottest day of the year at Kemi Ajos, 1993 to 2026. The record is 31.2 C (88.2 F) in 2018, marked on the chart; the median year is 26.3 C (79.3 F).
Hottest day (TXx) at Kemi Ajos by year
Year
Hottest day (TXx)
1993
26.5 C (79.7 F)
1994
25.6 C (78.1 F)
1995
24.0 C (75.2 F)
1996
22.7 C (72.9 F)
1997
25.8 C (78.4 F)
1998
26.6 C (79.9 F)
1999
28.5 C (83.3 F)
2000
27.9 C (82.2 F)
2001
26.1 C (79.0 F)
2002
25.3 C (77.5 F)
2003
28.1 C (82.6 F)
2004
25.4 C (77.7 F)
2005
28.1 C (82.6 F)
2006
25.3 C (77.5 F)
2007
25.5 C (77.9 F)
2008
25.8 C (78.4 F)
2009
26.7 C (80.1 F)
2010
27.4 C (81.3 F)
2011
28.7 C (83.7 F)
2012
24.5 C (76.1 F)
2013
25.6 C (78.1 F)
2014
29.5 C (85.1 F)
2015
22.4 C (72.3 F)
2016
23.7 C (74.7 F)
2017
23.5 C (74.3 F)
2018
31.2 C (88.2 F)
2019
29.4 C (84.9 F)
2020
24.0 C (75.2 F)
2021
28.2 C (82.8 F)
2022
27.5 C (81.5 F)
2023
30.1 C (86.2 F)
2024
27.7 C (81.9 F)
2025
30.0 C (86.0 F)
2026
23.9 C (75.0 F)
Coldest night (TNn)
The coldest night of the year at Kemi Ajos, 1993 to 2026. The record is -37.1 C (-34.8 F) in 1999, marked on the chart; the median year is -27.3 C (-17.2 F).
Coldest night (TNn) at Kemi Ajos by year
Year
Coldest night (TNn)
1993
-23.4 C (-10.1 F)
1994
-29.9 C (-21.8 F)
1995
-27.9 C (-18.2 F)
1996
-29.0 C (-20.2 F)
1997
-27.3 C (-17.1 F)
1998
-32.8 C (-27.0 F)
1999
-37.1 C (-34.8 F)
2000
-24.6 C (-12.3 F)
2001
-25.9 C (-14.6 F)
2002
-30.8 C (-23.4 F)
2003
-32.6 C (-26.7 F)
2004
-27.4 C (-17.3 F)
2005
-25.7 C (-14.3 F)
2006
-28.5 C (-19.3 F)
2007
-29.6 C (-21.3 F)
2008
-20.9 C (-5.6 F)
2009
-25.3 C (-13.5 F)
2010
-30.7 C (-23.3 F)
2011
-30.9 C (-23.6 F)
2012
-33.8 C (-28.8 F)
2013
-25.5 C (-13.9 F)
2014
-22.2 C (-8.0 F)
2015
-27.5 C (-17.5 F)
2016
-28.6 C (-19.5 F)
2017
-26.8 C (-16.2 F)
2018
-25.6 C (-14.1 F)
2019
-31.5 C (-24.7 F)
2020
-21.1 C (-6.0 F)
2021
-26.7 C (-16.1 F)
2022
-26.7 C (-16.1 F)
2023
-24.4 C (-11.9 F)
2024
-30.7 C (-23.3 F)
2025
-25.9 C (-14.6 F)
2026
-26.9 C (-16.4 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
32 years with a frost
Across 32 years with a frost, the median last spring frost at Kemi Ajos falls on 9 May and the median first autumn frost on 9 October, which leaves a median of 153 days between them.
Fitted over all years, the growing season changes by +4.5 days per decade at this station.
Frost dates and growing season at Kemi Ajos
Measure
Median, all years
Earliest period
Recent period (1996 to 2025)
Recent against earliest
Fitted trend
Last spring frost
9 May
n/a
9 May
n/a
-2.2 days per decade
First autumn frost
9 October
n/a
9 October
n/a
+2.3 days per decade
Growing days
153 days
n/a
154 days
n/a
+4.5 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 Kemi Ajos standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Kemi Ajos 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.