Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Suomussalmi Kk. 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 Suomussalmi Kk, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
7.2 C (45.0 F)
-43.3 C (-45.9 F)
n/a
n/a
Feb
6.9 C (44.4 F)
-42.5 C (-44.5 F)
n/a
n/a
Mar
7.6 C (45.7 F)
-34.5 C (-30.1 F)
n/a
n/a
Apr
18.4 C (65.1 F)
-25.0 C (-13.0 F)
n/a
n/a
May
26.9 C (80.4 F)
-14.1 C (6.6 F)
n/a
n/a
Jun
29.8 C (85.6 F)
-4.0 C (24.8 F)
n/a
n/a
Jul
31.7 C (89.1 F)
-0.6 C (30.9 F)
n/a
n/a
Aug
29.5 C (85.1 F)
-7.0 C (19.4 F)
n/a
n/a
Sep
23.3 C (73.9 F)
-7.7 C (18.1 F)
n/a
n/a
Oct
14.6 C (58.3 F)
-22.6 C (-8.7 F)
n/a
n/a
Nov
9.3 C (48.7 F)
-33.5 C (-28.3 F)
n/a
n/a
Dec
5.0 C (41.0 F)
-35.7 C (-32.3 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Suomussalmi Kk still stand. 1966 holds the most, with 62.
Standing records at Suomussalmi Kk by the year they were set
Year set
Standing records
1959
28
1960
40
1961
33
1962
41
1963
32
1964
25
1965
25
1966
62
1967
39
1968
49
1969
47
1970
20
1971
35
1972
48
1973
32
1974
27
1975
38
1976
23
1977
37
1978
34
1979
28
1980
25
1981
27
1982
30
1983
25
1984
24
1985
31
1986
36
1987
35
1988
33
1989
38
1990
50
1991
28
1992
61
1993
33
1994
23
1995
40
1996
24
1997
37
1998
37
1999
54
2000
30
All-Time Record Progression
2 new records
2 all-time records were set at Suomussalmi Kk between 25 June 1991 and 28 January 1999. Each dot is a new record.
When Suomussalmi Kk set new all-time records
Date
Kind
Detail
1991-06-25
Record daily precipitation
Record daily precipitation 53.6 mm (2.1 in)
1999-01-28
Record low minimum temperature
Record low minimum temperature -43.3 C (-45.9 F)
Wettest Day of Each Month
Jun: 53.6 mm (2.1 in)
The wettest day on record for each calendar month at Suomussalmi Kk. The most was 53.6 mm (2.1 in) on 25 June 1991.
Record daily precipitation for each month at Suomussalmi Kk
Month
Record daily precipitation (mm)
Date
Jan
17.5 mm (0.7 in)
14 January 1983
Feb
16.0 mm (0.6 in)
20 February 1990
Mar
19.2 mm (0.8 in)
4 March 2000
Apr
36.7 mm (1.4 in)
21 April 1964
May
40.9 mm (1.6 in)
25 May 1986
Jun
53.6 mm (2.1 in)
25 June 1991
Jul
52.2 mm (2.1 in)
18 July 1994
Aug
46.3 mm (1.8 in)
25 August 1959
Sep
36.0 mm (1.4 in)
5 September 1962
Oct
22.0 mm (0.9 in)
11 October 1979
Nov
24.5 mm (1.0 in)
2 November 1999
Dec
14.5 mm (0.6 in)
13 December 1999
Period of Record Coverage
1959 to 2000
Complete yearUnder 90 percent of days
42 years of record at Suomussalmi Kk, 1959 to 2000. 3 years have data for under 90 percent of days and are left out of rankings: 1959, 1970, 2000.
Cooler than the station meanWarmer than the station mean
One stripe for each of 39 complete years at Suomussalmi Kk, 1960 to 1999. Blue stripes are years cooler than the station's own mean of 0.4 C (32.8 F); red stripes are warmer. The coolest year was 1966, at -1.8 C (28.7 F), and the warmest was 1989, at 2.7 C (36.9 F). The strongest colour marks a difference of 2.3 C (4.1 F).
Annual mean temperature at Suomussalmi Kk as warming stripes, 1960 to 1999
Year
Annual mean temperature
Difference from the station mean
1960
0.1 C
-0.30 C
1961
1.9 C
+1.42 C
1962
0.0 C
-0.45 C
1963
0.3 C
-0.18 C
1964
1.0 C
+0.54 C
1965
0.0 C
-0.40 C
1966
-1.8 C
-2.25 C
1967
1.2 C
+0.79 C
1968
-0.8 C
-1.23 C
1969
-1.4 C
-1.86 C
1971
-0.5 C
-0.96 C
1972
2.0 C
+1.57 C
1973
0.5 C
+0.11 C
1974
2.4 C
+1.94 C
1975
1.8 C
+1.41 C
1976
-0.7 C
-1.12 C
1977
0.2 C
-0.21 C
1978
-1.1 C
-1.58 C
1979
0.5 C
+0.08 C
1980
-0.3 C
-0.70 C
1981
0.1 C
-0.37 C
1982
0.7 C
+0.25 C
1983
0.9 C
+0.51 C
1984
1.6 C
+1.21 C
1985
-1.6 C
-2.03 C
1986
0.1 C
-0.35 C
1987
-1.3 C
-1.72 C
1988
0.7 C
+0.30 C
1989
2.7 C
+2.29 C
1990
1.4 C
+0.97 C
1991
1.1 C
+0.62 C
1992
1.1 C
+0.71 C
1993
0.3 C
-0.13 C
1994
0.5 C
+0.03 C
1995
1.2 C
+0.78 C
1996
0.6 C
+0.19 C
1997
0.5 C
+0.08 C
1998
-0.2 C
-0.59 C
1999
1.0 C
+0.60 C
The fitted trend in annual mean temperature here over 1960 to 1999 is 0.1 C (-0.2 to 0.4) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.3 F (-0.3 to 0.8) per decade. The slope is a straight line fitted to 39 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Suomussalmi Kk
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.1 C (-0.2 to 0.4) per decade
0.3 F (-0.3 to 0.8) per decade
1960 to 1999
39
Not clearly different from zero
Mean daily maximum
0.1 C (-0.2 to 0.4) per decade
0.2 F (-0.3 to 0.7) per decade
1960 to 1999
39
Not clearly different from zero
Mean daily minimum
0.2 C (-0.2 to 0.5) per decade
0.3 F (-0.3 to 0.9) per decade
1960 to 1999
39
Not clearly different from zero
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
1959 to 2000
Yearly extremes at Suomussalmi Kk: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
31.7 C (89.1 F)
1972
27.7 C (81.9 F)
42
Coldest night (TNn)
-43.3 C (-45.9 F)
1999
-34.0 C (-29.3 F)
42
Wettest day (Rx1day)
53.6 mm (2.1 in)
1991
27.2 mm (1.1 in)
42
Wettest five days (Rx5day)
95.1 mm (3.7 in)
1959
50.2 mm (2.0 in)
42
Longest dry spell (CDD)
47 days
1978
17 days
42
Hottest day (TXx)
The hottest day of the year at Suomussalmi Kk, 1959 to 2000. The record is 31.7 C (89.1 F) in 1972, marked on the chart; the median year is 27.7 C (81.9 F).
Hottest day (TXx) at Suomussalmi Kk by year
Year
Hottest day (TXx)
1959
26.2 C (79.2 F)
1960
29.9 C (85.8 F)
1961
28.3 C (82.9 F)
1962
22.9 C (73.2 F)
1963
29.5 C (85.1 F)
1964
28.5 C (83.3 F)
1965
25.5 C (77.9 F)
1966
28.7 C (83.7 F)
1967
28.5 C (83.3 F)
1968
29.4 C (84.9 F)
1969
28.0 C (82.4 F)
1970
27.0 C (80.6 F)
1971
28.6 C (83.5 F)
1972
31.7 C (89.1 F)
1973
28.1 C (82.6 F)
1974
28.4 C (83.1 F)
1975
26.8 C (80.2 F)
1976
25.2 C (77.4 F)
1977
27.8 C (82.0 F)
1978
26.6 C (79.9 F)
1979
25.8 C (78.4 F)
1980
28.0 C (82.4 F)
1981
26.4 C (79.5 F)
1982
28.2 C (82.8 F)
1983
25.9 C (78.6 F)
1984
26.4 C (79.5 F)
1985
26.2 C (79.2 F)
1986
28.7 C (83.7 F)
1987
26.5 C (79.7 F)
1988
30.1 C (86.2 F)
1989
28.3 C (82.9 F)
1990
26.1 C (79.0 F)
1991
24.8 C (76.6 F)
1992
26.9 C (80.4 F)
1993
24.6 C (76.3 F)
1994
27.6 C (81.7 F)
1995
27.0 C (80.6 F)
1996
24.3 C (75.7 F)
1997
28.9 C (84.0 F)
1998
26.0 C (78.8 F)
1999
30.4 C (86.7 F)
2000
29.7 C (85.5 F)
Coldest night (TNn)
The coldest night of the year at Suomussalmi Kk, 1959 to 2000. The record is -43.3 C (-45.9 F) in 1999, marked on the chart; the median year is -34.0 C (-29.3 F).
Coldest night (TNn) at Suomussalmi Kk by year
Year
Coldest night (TNn)
1959
-34.9 C (-30.8 F)
1960
-36.5 C (-33.7 F)
1961
-31.5 C (-24.7 F)
1962
-33.9 C (-29.0 F)
1963
-34.5 C (-30.1 F)
1964
-29.5 C (-21.1 F)
1965
-31.5 C (-24.7 F)
1966
-42.5 C (-44.5 F)
1967
-35.3 C (-31.5 F)
1968
-36.9 C (-34.4 F)
1969
-39.7 C (-39.5 F)
1970
-34.1 C (-29.4 F)
1971
-31.7 C (-25.1 F)
1972
-35.3 C (-31.5 F)
1973
-29.3 C (-20.7 F)
1974
-24.7 C (-12.5 F)
1975
-30.5 C (-22.9 F)
1976
-34.7 C (-30.5 F)
1977
-34.2 C (-29.6 F)
1978
-35.9 C (-32.6 F)
1979
-35.1 C (-31.2 F)
1980
-34.1 C (-29.4 F)
1981
-31.2 C (-24.2 F)
1982
-34.1 C (-29.4 F)
1983
-30.9 C (-23.6 F)
1984
-27.7 C (-17.9 F)
1985
-40.9 C (-41.6 F)
1986
-31.7 C (-25.1 F)
1987
-35.9 C (-32.6 F)
1988
-30.4 C (-22.7 F)
1989
-32.5 C (-26.5 F)
1990
-33.5 C (-28.3 F)
1991
-34.2 C (-29.6 F)
1992
-28.7 C (-19.7 F)
1993
-34.0 C (-29.2 F)
1994
-37.6 C (-35.7 F)
1995
-33.9 C (-29.0 F)
1996
-32.4 C (-26.3 F)
1997
-33.0 C (-27.4 F)
1998
-38.0 C (-36.4 F)
1999
-43.3 C (-45.9 F)
2000
-31.0 C (-23.8 F)
Wettest day (Rx1day)
The wettest day of the year at Suomussalmi Kk, 1959 to 2000. The record is 53.6 mm (2.1 in) in 1991, marked on the chart; the median year is 27.2 mm (1.1 in).
Wettest day (Rx1day) at Suomussalmi Kk by year
Year
Wettest day (Rx1day)
1959
46.3 mm (1.8 in)
1960
35.0 mm (1.4 in)
1961
34.2 mm (1.3 in)
1962
36.0 mm (1.4 in)
1963
25.0 mm (1.0 in)
1964
36.7 mm (1.4 in)
1965
17.5 mm (0.7 in)
1966
17.8 mm (0.7 in)
1967
24.8 mm (1.0 in)
1968
21.2 mm (0.8 in)
1969
25.3 mm (1.0 in)
1970
28.3 mm (1.1 in)
1971
39.7 mm (1.6 in)
1972
24.6 mm (1.0 in)
1973
34.3 mm (1.4 in)
1974
27.3 mm (1.1 in)
1975
15.7 mm (0.6 in)
1976
20.4 mm (0.8 in)
1977
16.6 mm (0.7 in)
1978
21.2 mm (0.8 in)
1979
31.8 mm (1.3 in)
1980
20.8 mm (0.8 in)
1981
18.2 mm (0.7 in)
1982
33.4 mm (1.3 in)
1983
27.0 mm (1.1 in)
1984
24.7 mm (1.0 in)
1985
34.7 mm (1.4 in)
1986
40.9 mm (1.6 in)
1987
29.1 mm (1.1 in)
1988
22.9 mm (0.9 in)
1989
39.0 mm (1.5 in)
1990
29.9 mm (1.2 in)
1991
53.6 mm (2.1 in)
1992
26.7 mm (1.1 in)
1993
25.8 mm (1.0 in)
1994
52.2 mm (2.1 in)
1995
22.5 mm (0.9 in)
1996
28.8 mm (1.1 in)
1997
26.3 mm (1.0 in)
1998
30.8 mm (1.2 in)
1999
37.6 mm (1.5 in)
2000
19.2 mm (0.8 in)
Wettest five days (Rx5day)
The wettest five days of the year at Suomussalmi Kk, 1959 to 2000. The record is 95.1 mm (3.7 in) in 1959, marked on the chart; the median year is 50.2 mm (2.0 in).
Wettest five days (Rx5day) at Suomussalmi Kk by year
Year
Wettest five days (Rx5day)
1959
95.1 mm (3.7 in)
1960
67.3 mm (2.6 in)
1961
61.3 mm (2.4 in)
1962
59.2 mm (2.3 in)
1963
84.5 mm (3.3 in)
1964
51.3 mm (2.0 in)
1965
43.1 mm (1.7 in)
1966
45.0 mm (1.8 in)
1967
55.1 mm (2.2 in)
1968
49.0 mm (1.9 in)
1969
33.9 mm (1.3 in)
1970
37.5 mm (1.5 in)
1971
60.9 mm (2.4 in)
1972
38.7 mm (1.5 in)
1973
51.9 mm (2.0 in)
1974
72.6 mm (2.9 in)
1975
31.7 mm (1.2 in)
1976
43.0 mm (1.7 in)
1977
49.8 mm (2.0 in)
1978
33.1 mm (1.3 in)
1979
50.5 mm (2.0 in)
1980
39.7 mm (1.6 in)
1981
32.1 mm (1.3 in)
1982
54.9 mm (2.2 in)
1983
44.1 mm (1.7 in)
1984
47.9 mm (1.9 in)
1985
52.1 mm (2.1 in)
1986
55.6 mm (2.2 in)
1987
60.1 mm (2.4 in)
1988
47.9 mm (1.9 in)
1989
82.2 mm (3.2 in)
1990
45.2 mm (1.8 in)
1991
84.6 mm (3.3 in)
1992
51.4 mm (2.0 in)
1993
41.3 mm (1.6 in)
1994
72.8 mm (2.9 in)
1995
47.7 mm (1.9 in)
1996
68.9 mm (2.7 in)
1997
75.5 mm (3.0 in)
1998
49.0 mm (1.9 in)
1999
44.3 mm (1.7 in)
2000
38.3 mm (1.5 in)
Longest dry spell (CDD)
The longest dry spell of the year at Suomussalmi Kk, 1959 to 2000. The record is 47 days in 1978, marked on the chart; the median year is 17 days.
Longest dry spell (CDD) at Suomussalmi Kk by year
Year
Longest dry spell (CDD)
1959
19 days
1960
15 days
1961
17 days
1962
20 days
1963
24 days
1964
30 days
1965
37 days
1966
39 days
1967
15 days
1968
19 days
1969
25 days
1970
18 days
1971
15 days
1972
25 days
1973
13 days
1974
26 days
1975
11 days
1976
18 days
1977
13 days
1978
47 days
1979
15 days
1980
24 days
1981
17 days
1982
15 days
1983
14 days
1984
19 days
1985
13 days
1986
17 days
1987
17 days
1988
15 days
1989
12 days
1990
12 days
1991
14 days
1992
24 days
1993
20 days
1994
27 days
1995
17 days
1996
21 days
1997
14 days
1998
15 days
1999
22 days
2000
16 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
39 years with a frost
Across 39 years with a frost, the median last spring frost at Suomussalmi Kk falls on 1 June and the median first autumn frost on 5 September, which leaves a median of 93 days between them.
Fitted over all years, the growing season changes by -6.7 days per decade at this station.
Frost dates and growing season at Suomussalmi Kk
Measure
Median, all years
Earliest period
Recent period (1969 to 1999)
Recent against earliest
Fitted trend
Last spring frost
1 June
n/a
1 June
n/a
+0.2 days per decade
First autumn frost
5 September
n/a
1 September
n/a
-6.5 days per decade
Growing days
93 days
n/a
93 days
n/a
-6.7 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
40 years, 1959 to 1999
A day with at least 28.0 mm (1.1 in) of rain is expected about once in 2 years. A day with at least 58.3 mm (2.3 in) of rain is expected about once in 100 years.
Rainfall return levels at Suomussalmi Kk: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
28.0 mm (1.1 in)
5 years
36.4 mm (1.4 in)
10 years
41.8 mm (1.6 in)
25 years
48.6 mm (1.9 in)
50 years
53.5 mm (2.1 in)
Longer than the 40 years of record
100 years
58.3 mm (2.3 in)
Longer than the 40 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, 40 years of values from 1959 to 1999.
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: 53.6 mm (2.1 in) in 1991; 52.2 mm (2.1 in) in 1994; 46.3 mm (1.8 in) in 1959.
Download the Data
Data for Suomussalmi Kk standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Suomussalmi Kk 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.