Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Kihnio Aitoneva. 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 Kihnio Aitoneva, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
8.3 C (46.9 F)
-38.5 C (-37.3 F)
n/a
n/a
Feb
8.5 C (47.3 F)
-37.8 C (-36.0 F)
n/a
n/a
Mar
13.3 C (55.9 F)
-27.0 C (-16.6 F)
n/a
n/a
Apr
20.0 C (68.0 F)
-17.1 C (1.2 F)
n/a
n/a
May
28.0 C (82.4 F)
-6.9 C (19.6 F)
n/a
n/a
Jun
30.8 C (87.4 F)
-2.4 C (27.7 F)
n/a
n/a
Jul
30.5 C (86.9 F)
2.4 C (36.3 F)
n/a
n/a
Aug
30.4 C (86.7 F)
-1.0 C (30.2 F)
n/a
n/a
Sep
26.3 C (79.3 F)
-6.4 C (20.5 F)
n/a
n/a
Oct
16.5 C (61.7 F)
-19.1 C (-2.4 F)
n/a
n/a
Nov
10.5 C (50.9 F)
-27.5 C (-17.5 F)
n/a
n/a
Dec
6.2 C (43.2 F)
-34.8 C (-30.6 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Kihnio Aitoneva still stand. 1968 holds the most, with 66.
Standing records at Kihnio Aitoneva by the year they were set
Year set
Standing records
1959
41
1960
30
1961
49
1962
42
1963
28
1964
29
1965
52
1966
58
1967
45
1968
66
1969
25
1970
27
1971
36
1972
60
1973
64
1974
30
1975
59
1976
30
1977
62
1978
52
1979
26
1980
36
1981
26
1982
41
1983
44
1984
41
1985
43
1986
32
1987
66
1988
34
1989
56
1990
45
1991
32
1992
55
1993
2
Wettest Day of Each Month
Jul: 45.1 mm (1.8 in)
The wettest day on record for each calendar month at Kihnio Aitoneva. The most was 45.1 mm (1.8 in) on 21 July 1961.
Record daily precipitation for each month at Kihnio Aitoneva
Month
Record daily precipitation (mm)
Date
Jan
20.8 mm (0.8 in)
17 January 1975
Feb
15.5 mm (0.6 in)
8 February 1984
Mar
20.5 mm (0.8 in)
21 March 1974
Apr
21.6 mm (0.9 in)
2 April 1985
May
25.5 mm (1.0 in)
17 May 1991
Jun
34.8 mm (1.4 in)
25 June 1988
Jul
45.1 mm (1.8 in)
21 July 1961
Aug
35.5 mm (1.4 in)
19 August 1961
Sep
32.1 mm (1.3 in)
15 September 1976
Oct
18.7 mm (0.7 in)
20 October 1992
Nov
20.8 mm (0.8 in)
24 November 1982
Dec
17.8 mm (0.7 in)
21 December 1971
Period of Record Coverage
1959 to 1993
Complete yearUnder 90 percent of days
35 years of record at Kihnio Aitoneva, 1959 to 1993. 2 years have data for under 90 percent of days and are left out of rankings: 1959, 1993.
Cooler than the station meanWarmer than the station mean
One stripe for each of 33 complete years at Kihnio Aitoneva, 1960 to 1992. Blue stripes are years cooler than the station's own mean of 3.0 C (37.5 F); red stripes are warmer. The coolest year was 1985, at 1.1 C (34.0 F), and the warmest was 1989, at 5.0 C (41.0 F). The strongest colour marks a difference of 2.0 C (3.6 F).
Annual mean temperature at Kihnio Aitoneva as warming stripes, 1960 to 1992
Year
Annual mean temperature
Difference from the station mean
1960
3.4 C
+0.33 C
1961
4.7 C
+1.64 C
1962
2.5 C
-0.56 C
1963
2.9 C
-0.14 C
1964
3.1 C
+0.06 C
1965
2.6 C
-0.48 C
1966
1.6 C
-1.40 C
1967
3.1 C
+0.03 C
1968
2.1 C
-0.99 C
1969
2.1 C
-0.97 C
1970
2.4 C
-0.65 C
1971
2.8 C
-0.28 C
1972
4.2 C
+1.18 C
1973
3.2 C
+0.14 C
1974
4.5 C
+1.46 C
1975
4.6 C
+1.59 C
1976
1.9 C
-1.11 C
1977
2.7 C
-0.39 C
1978
1.7 C
-1.37 C
1979
2.9 C
-0.16 C
1980
2.7 C
-0.33 C
1981
2.6 C
-0.48 C
1982
3.3 C
+0.23 C
1983
3.6 C
+0.58 C
1984
3.8 C
+0.79 C
1985
1.1 C
-1.95 C
1986
2.5 C
-0.54 C
1987
1.2 C
-1.88 C
1988
3.4 C
+0.40 C
1989
5.0 C
+1.94 C
1990
4.4 C
+1.34 C
1991
4.1 C
+1.01 C
1992
4.1 C
+1.02 C
The fitted trend in annual mean temperature here over 1960 to 1992 is 0.2 C (-0.2 to 0.6) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.3 F (-0.4 to 1.0) per decade. The slope is a straight line fitted to 33 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Kihnio Aitoneva
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.2 C (-0.2 to 0.6) per decade
0.3 F (-0.4 to 1.0) per decade
1960 to 1992
33
Not clearly different from zero
Mean daily maximum
0.1 C (-0.3 to 0.4) per decade
0.1 F (-0.5 to 0.8) per decade
1960 to 1992
33
Not clearly different from zero
Mean daily minimum
0.3 C (-0.2 to 0.7) per decade
0.5 F (-0.3 to 1.2) per decade
1960 to 1992
33
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 1993
Yearly extremes at Kihnio Aitoneva: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
30.8 C (87.4 F)
1977
28.5 C (83.3 F)
35
Coldest night (TNn)
-38.5 C (-37.3 F)
1987
-28.2 C (-18.8 F)
35
Wettest day (Rx1day)
45.1 mm (1.8 in)
1961
28.0 mm (1.1 in)
35
Wettest five days (Rx5day)
76.0 mm (3.0 in)
1961
51.0 mm (2.0 in)
35
Longest dry spell (CDD)
46 days
1969
21 days
35
Hottest day (TXx)
The hottest day of the year at Kihnio Aitoneva, 1959 to 1993. The record is 30.8 C (87.4 F) in 1977, marked on the chart; the median year is 28.5 C (83.3 F).
Hottest day (TXx) at Kihnio Aitoneva by year
Year
Hottest day (TXx)
1959
28.7 C (83.7 F)
1960
30.5 C (86.9 F)
1961
28.4 C (83.1 F)
1962
25.0 C (77.0 F)
1963
30.4 C (86.7 F)
1964
30.0 C (86.0 F)
1965
27.1 C (80.8 F)
1966
29.8 C (85.6 F)
1967
29.0 C (84.2 F)
1968
28.8 C (83.8 F)
1969
29.5 C (85.1 F)
1970
27.6 C (81.7 F)
1971
28.0 C (82.4 F)
1972
30.6 C (87.1 F)
1973
30.0 C (86.0 F)
1974
27.5 C (81.5 F)
1975
28.0 C (82.4 F)
1976
25.7 C (78.3 F)
1977
30.8 C (87.4 F)
1978
27.1 C (80.8 F)
1979
28.9 C (84.0 F)
1980
29.9 C (85.8 F)
1981
27.9 C (82.2 F)
1982
28.7 C (83.7 F)
1983
28.5 C (83.3 F)
1984
26.4 C (79.5 F)
1985
27.4 C (81.3 F)
1986
29.6 C (85.3 F)
1987
26.4 C (79.5 F)
1988
30.1 C (86.2 F)
1989
27.8 C (82.0 F)
1990
25.7 C (78.3 F)
1991
27.1 C (80.8 F)
1992
28.9 C (84.0 F)
1993
4.2 C (39.6 F)
Coldest night (TNn)
The coldest night of the year at Kihnio Aitoneva, 1959 to 1993. The record is -38.5 C (-37.3 F) in 1987, marked on the chart; the median year is -28.2 C (-18.8 F).
Coldest night (TNn) at Kihnio Aitoneva by year
Year
Coldest night (TNn)
1959
-28.0 C (-18.4 F)
1960
-24.7 C (-12.5 F)
1961
-27.4 C (-17.3 F)
1962
-28.0 C (-18.4 F)
1963
-29.4 C (-20.9 F)
1964
-28.2 C (-18.8 F)
1965
-29.6 C (-21.3 F)
1966
-37.8 C (-36.0 F)
1967
-33.5 C (-28.3 F)
1968
-36.4 C (-33.5 F)
1969
-29.0 C (-20.2 F)
1970
-28.6 C (-19.5 F)
1971
-26.3 C (-15.3 F)
1972
-27.0 C (-16.6 F)
1973
-29.7 C (-21.5 F)
1974
-14.5 C (5.9 F)
1975
-23.0 C (-9.4 F)
1976
-27.5 C (-17.5 F)
1977
-30.0 C (-22.0 F)
1978
-34.8 C (-30.6 F)
1979
-32.1 C (-25.8 F)
1980
-31.2 C (-24.2 F)
1981
-26.1 C (-15.0 F)
1982
-29.0 C (-20.2 F)
1983
-27.5 C (-17.5 F)
1984
-27.4 C (-17.3 F)
1985
-33.7 C (-28.7 F)
1986
-29.9 C (-21.8 F)
1987
-38.5 C (-37.3 F)
1988
-28.7 C (-19.7 F)
1989
-27.1 C (-16.8 F)
1990
-23.5 C (-10.3 F)
1991
-22.1 C (-7.8 F)
1992
-24.7 C (-12.5 F)
1993
-18.6 C (-1.5 F)
Wettest day (Rx1day)
The wettest day of the year at Kihnio Aitoneva, 1959 to 1993. The record is 45.1 mm (1.8 in) in 1961, marked on the chart; the median year is 28.0 mm (1.1 in).
Wettest day (Rx1day) at Kihnio Aitoneva by year
Year
Wettest day (Rx1day)
1959
33.4 mm (1.3 in)
1960
16.0 mm (0.6 in)
1961
45.1 mm (1.8 in)
1962
20.6 mm (0.8 in)
1963
31.7 mm (1.2 in)
1964
17.3 mm (0.7 in)
1965
31.9 mm (1.3 in)
1966
18.0 mm (0.7 in)
1967
34.8 mm (1.4 in)
1968
19.0 mm (0.7 in)
1969
17.0 mm (0.7 in)
1970
31.4 mm (1.2 in)
1971
29.3 mm (1.2 in)
1972
21.8 mm (0.9 in)
1973
31.6 mm (1.2 in)
1974
23.4 mm (0.9 in)
1975
28.0 mm (1.1 in)
1976
32.1 mm (1.3 in)
1977
31.0 mm (1.2 in)
1978
29.0 mm (1.1 in)
1979
26.6 mm (1.0 in)
1980
21.3 mm (0.8 in)
1981
33.3 mm (1.3 in)
1982
21.6 mm (0.9 in)
1983
26.9 mm (1.1 in)
1984
26.2 mm (1.0 in)
1985
21.6 mm (0.9 in)
1986
34.2 mm (1.3 in)
1987
28.1 mm (1.1 in)
1988
34.8 mm (1.4 in)
1989
37.3 mm (1.5 in)
1990
30.2 mm (1.2 in)
1991
28.0 mm (1.1 in)
1992
27.5 mm (1.1 in)
1993
7.0 mm (0.28 in)
Wettest five days (Rx5day)
The wettest five days of the year at Kihnio Aitoneva, 1959 to 1993. The record is 76.0 mm (3.0 in) in 1961, marked on the chart; the median year is 51.0 mm (2.0 in).
Wettest five days (Rx5day) at Kihnio Aitoneva by year
Year
Wettest five days (Rx5day)
1959
52.5 mm (2.1 in)
1960
32.0 mm (1.3 in)
1961
76.0 mm (3.0 in)
1962
45.0 mm (1.8 in)
1963
60.9 mm (2.4 in)
1964
36.6 mm (1.4 in)
1965
56.3 mm (2.2 in)
1966
52.6 mm (2.1 in)
1967
65.6 mm (2.6 in)
1968
33.9 mm (1.3 in)
1969
29.2 mm (1.1 in)
1970
36.9 mm (1.5 in)
1971
46.4 mm (1.8 in)
1972
49.8 mm (2.0 in)
1973
42.4 mm (1.7 in)
1974
46.5 mm (1.8 in)
1975
37.3 mm (1.5 in)
1976
51.0 mm (2.0 in)
1977
55.4 mm (2.2 in)
1978
43.5 mm (1.7 in)
1979
61.1 mm (2.4 in)
1980
53.8 mm (2.1 in)
1981
53.0 mm (2.1 in)
1982
52.2 mm (2.1 in)
1983
33.9 mm (1.3 in)
1984
64.2 mm (2.5 in)
1985
36.1 mm (1.4 in)
1986
40.8 mm (1.6 in)
1987
63.5 mm (2.5 in)
1988
62.7 mm (2.5 in)
1989
71.2 mm (2.8 in)
1990
54.2 mm (2.1 in)
1991
60.8 mm (2.4 in)
1992
39.8 mm (1.6 in)
1993
15.4 mm (0.6 in)
Longest dry spell (CDD)
The longest dry spell of the year at Kihnio Aitoneva, 1959 to 1993. The record is 46 days in 1969, marked on the chart; the median year is 21 days.
Longest dry spell (CDD) at Kihnio Aitoneva by year
Year
Longest dry spell (CDD)
1959
21 days
1960
39 days
1961
23 days
1962
12 days
1963
21 days
1964
22 days
1965
24 days
1966
20 days
1967
18 days
1968
27 days
1969
46 days
1970
29 days
1971
27 days
1972
41 days
1973
15 days
1974
21 days
1975
16 days
1976
21 days
1977
19 days
1978
23 days
1979
20 days
1980
21 days
1981
23 days
1982
23 days
1983
32 days
1984
19 days
1985
18 days
1986
17 days
1987
26 days
1988
17 days
1989
22 days
1990
18 days
1991
18 days
1992
17 days
1993
6 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
33 years with a frost
Across 33 years with a frost, the median last spring frost at Kihnio Aitoneva falls on 27 May and the median first autumn frost on 16 September, which leaves a median of 112 days between them.
Fitted over all years, the growing season changes by -1.1 days per decade at this station.
Frost dates and growing season at Kihnio Aitoneva
Measure
Median, all years
Earliest period
Recent period (1963 to 1992)
Recent against earliest
Fitted trend
Last spring frost
27 May
n/a
27 May
n/a
-1.8 days per decade
First autumn frost
16 September
n/a
16 September
n/a
-2.9 days per decade
Growing days
112 days
n/a
112 days
n/a
-1.1 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
34 years, 1959 to 1992
A day with at least 27.8 mm (1.1 in) of rain is expected about once in 2 years. A day with at least 41.6 mm (1.6 in) of rain is expected about once in 100 years.
Rainfall return levels at Kihnio Aitoneva: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
27.8 mm (1.1 in)
5 years
33.5 mm (1.3 in)
10 years
36.3 mm (1.4 in)
25 years
38.9 mm (1.5 in)
50 years
40.4 mm (1.6 in)
Longer than the 34 years of record
100 years
41.6 mm (1.6 in)
Longer than the 34 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, 34 years of values from 1959 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: 45.1 mm (1.8 in) in 1961; 37.3 mm (1.5 in) in 1989; 34.8 mm (1.4 in) in 1967.
Download the Data
Data for Kihnio Aitoneva standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Kihnio Aitoneva 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.