Mikkeli Lentoasema Weather Records (FIE00143952)
Record envelope, standing records and threshold days for Mikkeli Lentoasema (FIE00143952), Finland, with 68 years of record.
Key Facts for Mikkeli Lentoasema
- Mikkeli Lentoasema (FIE00143952) is a weather station in Finland at 61.69 latitude and 27.21 longitude, 101 m (331 ft) above sea level.
- The station reports from 1959 to 2026, 68 years of record.
- 1,464 records set at Mikkeli Lentoasema still stand.
- Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
- Mikkeli Lentoasema set a daily record high minimum temperature of 3.8 C (38.8 F) on 20 December 2025.
About the Station
- Location: Finland, 61.69 latitude, 27.21 longitude.
- Elevation: 101 m (331 ft).
- Period of record: 1959 to 2026, 68 years.
- Eligible elements: tmax, tmin, prcp.
Daily Record Envelope and 2026
26 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 7.1 C (44.8 F) | -37.1 C (-34.8 F) | 6.3 C (43.3 F) | -24.5 C (-12.1 F) |
| Feb | 8.5 C (47.3 F) | -37.5 C (-35.5 F) | 4.1 C (39.4 F) | -20.5 C (-4.9 F) |
| Mar | 15.0 C (59.0 F) | -36.3 C (-33.3 F) | 14.9 C (58.8 F) | -15.3 C (4.5 F) |
| Apr | 23.8 C (74.8 F) | -24.4 C (-11.9 F) | 20.6 C (69.1 F) | -11.1 C (12.0 F) |
| May | 30.2 C (86.4 F) | -8.3 C (17.1 F) | 22.7 C (72.9 F) | -5.3 C (22.5 F) |
| Jun | 33.1 C (91.6 F) | -4.9 C (23.2 F) | 27.4 C (81.3 F) | 1.5 C (34.7 F) |
| Jul | 32.7 C (90.9 F) | 0.0 C (32.0 F) | 31.2 C (88.2 F) | 7.2 C (45.0 F) |
| Aug | 33.2 C (91.8 F) | -3.1 C (26.4 F) | 27.8 C (82.0 F) | 0.9 C (33.6 F) |
| Sep | 27.0 C (80.6 F) | -6.8 C (19.8 F) | 24.3 C (75.7 F) | -2.9 C (26.8 F) |
| Oct | 19.9 C (67.8 F) | -16.3 C (2.7 F) | 13.8 C (56.8 F) | -6.3 C (20.7 F) |
| Nov | 11.8 C (53.2 F) | -26.5 C (-15.7 F) | 11.7 C (53.1 F) | -12.0 C (10.4 F) |
| Dec | 9.7 C (49.5 F) | -33.0 C (-27.4 F) | 6.3 C (43.3 F) | -17.2 C (1.0 F) |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1959 | 25 |
| 1960 | 25 |
| 1961 | 17 |
| 1962 | 36 |
| 1963 | 35 |
| 1964 | 17 |
| 1965 | 35 |
| 1966 | 36 |
| 1967 | 25 |
| 1968 | 32 |
| 1969 | 6 |
| 1970 | 5 |
| 1971 | 21 |
| 1972 | 24 |
| 1973 | 32 |
| 1974 | 6 |
| 1975 | 12 |
| 1976 | 14 |
| 1977 | 32 |
| 1978 | 22 |
| 1979 | 17 |
| 1980 | 10 |
| 1981 | 18 |
| 1982 | 16 |
| 1983 | 16 |
| 1984 | 11 |
| 1985 | 19 |
| 1986 | 12 |
| 1987 | 32 |
| 1988 | 19 |
| 1989 | 18 |
| 1990 | 24 |
| 1991 | 4 |
| 1992 | 31 |
| 1993 | 15 |
| 1994 | 9 |
| 1995 | 17 |
| 1996 | 9 |
| 1997 | 15 |
| 1998 | 23 |
| 1999 | 29 |
| 2000 | 28 |
| 2001 | 23 |
| 2002 | 26 |
| 2003 | 23 |
| 2004 | 10 |
| 2005 | 15 |
| 2006 | 43 |
| 2007 | 28 |
| 2008 | 12 |
| 2009 | 19 |
| 2010 | 27 |
| 2011 | 25 |
| 2012 | 16 |
| 2013 | 21 |
| 2014 | 30 |
| 2015 | 29 |
| 2016 | 13 |
| 2017 | 6 |
| 2018 | 37 |
| 2019 | 21 |
| 2020 | 42 |
| 2021 | 34 |
| 2022 | 19 |
| 2023 | 11 |
| 2024 | 45 |
| 2025 | 40 |
All-Time Record Progression
6 new records| Date | Kind | Detail |
|---|---|---|
| 1991-08-09 | Record daily precipitation | Record daily precipitation 60.1 mm (2.4 in) |
| 2010-07-12 | Record high maximum temperature | Record high maximum temperature 31.5 C (88.7 F) |
| 2010-07-13 | Record high maximum temperature | Record high maximum temperature 32.7 C (90.9 F) |
| 2010-07-27 | Record high minimum temperature | Record high minimum temperature 21.1 C (70.0 F) |
| 2010-08-08 | Record high maximum temperature | Record high maximum temperature 33.2 C (91.8 F) |
| 2014-05-13 | Record daily precipitation | Record daily precipitation 63.4 mm (2.5 in) |
Wettest Day of Each Month
May: 63.4 mm (2.5 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 20.1 mm (0.8 in) | 2 January 2015 |
| Feb | 27.6 mm (1.1 in) | 16 February 2024 |
| Mar | 20.9 mm (0.8 in) | 18 March 1961 |
| Apr | 20.9 mm (0.8 in) | 26 April 2016 |
| May | 63.4 mm (2.5 in) | 13 May 2014 |
| Jun | 46.2 mm (1.8 in) | 28 June 1983 |
| Jul | 46.7 mm (1.8 in) | 28 July 2023 |
| Aug | 60.1 mm (2.4 in) | 9 August 1991 |
| Sep | 44.2 mm (1.7 in) | 12 September 1973 |
| Oct | 27.0 mm (1.1 in) | 27 October 1988 |
| Nov | 20.8 mm (0.8 in) | 17 November 1990 |
| Dec | 22.5 mm (0.9 in) | 18 December 2019 |
Period of Record Coverage
1959 to 2025| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1959 | 365 | 100% | Yes |
| 1960 | 366 | 100% | Yes |
| 1961 | 365 | 100% | Yes |
| 1962 | 365 | 100% | Yes |
| 1963 | 365 | 100% | Yes |
| 1964 | 366 | 100% | Yes |
| 1965 | 365 | 100% | Yes |
| 1966 | 365 | 100% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 365 | 100% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 365 | 100% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 365 | 100% | Yes |
| 1978 | 365 | 100% | Yes |
| 1979 | 365 | 100% | Yes |
| 1980 | 366 | 100% | Yes |
| 1981 | 365 | 100% | Yes |
| 1982 | 365 | 100% | Yes |
| 1983 | 365 | 100% | Yes |
| 1984 | 366 | 100% | Yes |
| 1985 | 365 | 100% | Yes |
| 1986 | 365 | 100% | Yes |
| 1987 | 365 | 100% | Yes |
| 1988 | 366 | 100% | Yes |
| 1989 | 365 | 100% | Yes |
| 1990 | 365 | 100% | Yes |
| 1991 | 365 | 100% | Yes |
| 1992 | 366 | 100% | Yes |
| 1993 | 365 | 100% | Yes |
| 1994 | 365 | 100% | Yes |
| 1995 | 365 | 100% | Yes |
| 1996 | 366 | 100% | Yes |
| 1997 | 365 | 100% | Yes |
| 1998 | 365 | 100% | Yes |
| 1999 | 365 | 100% | Yes |
| 2000 | 366 | 100% | Yes |
| 2001 | 365 | 100% | Yes |
| 2002 | 365 | 100% | Yes |
| 2003 | 363 | 99% | Yes |
| 2004 | 366 | 100% | Yes |
| 2005 | 364 | 100% | Yes |
| 2006 | 361 | 99% | Yes |
| 2007 | 353 | 97% | Yes |
| 2008 | 358 | 98% | Yes |
| 2009 | 362 | 99% | Yes |
| 2010 | 360 | 99% | Yes |
| 2011 | 365 | 100% | Yes |
| 2012 | 366 | 100% | Yes |
| 2013 | 365 | 100% | Yes |
| 2014 | 365 | 100% | Yes |
| 2015 | 365 | 100% | Yes |
| 2016 | 366 | 100% | Yes |
| 2017 | 365 | 100% | Yes |
| 2018 | 365 | 100% | Yes |
| 2019 | 365 | 100% | Yes |
| 2020 | 366 | 100% | Yes |
| 2021 | 365 | 100% | Yes |
| 2022 | 365 | 100% | Yes |
| 2023 | 365 | 100% | Yes |
| 2024 | 366 | 100% | Yes |
| 2025 | 365 | 100% | Yes |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 20 December 2025 | Mikkeli Lentoasema, FI | daily high min | 3.8 C (38.8 F) | 2.4 C (4.3 F) | 10 years | 12 of 100 (Routine) |
| 19 December 2025 | Mikkeli Lentoasema, FI | daily high max | 5.8 C (42.4 F) | 2.1 C (3.8 F) | 10 years | 12 of 100 (Routine) |
| 19 December 2025 | Mikkeli Lentoasema, FI | daily high min | 1.3 C (34.3 F) | 0.9 C (1.6 F) | 14 years | 11 of 100 (Routine) |
| 18 December 2025 | Mikkeli Lentoasema, FI | daily high max | 5.5 C (41.9 F) | 1.8 C (3.2 F) | 27 years | 17 of 100 (Routine) |
| 17 December 2025 | Mikkeli Lentoasema, FI | daily high min | 3.7 C (38.7 F) | 1.7 C (3.1 F) | 32 years | 17 of 100 (Routine) |
| 16 December 2025 | Mikkeli Lentoasema, FI | daily high max | 4.6 C (40.3 F) | 0.6 C (1.1 F) | 32 years | 16 of 100 (Routine) |
| 3 December 2025 | Mikkeli Lentoasema, FI | daily high min | 3.6 C (38.5 F) | 0.5 C (0.9 F) | 19 years | 11 of 100 (Routine) |
| 12 November 2025 | Mikkeli Lentoasema, FI | daily rain | 10.8 mm (0.4 in) | 0.6 mm (0.02 in) | 8 years | 10 of 100 (Routine) |
| 6 November 2025 | Mikkeli Lentoasema, FI | daily high max | 10.8 C (51.4 F) | 0.6 C (1.1 F) | 58 years | 24 of 100 (Routine) |
| 5 November 2025 | Mikkeli Lentoasema, FI | daily high min | 7.8 C (46.0 F) | 0.6 C (1.1 F) | 63 years | 25 of 100 (Routine) |
| 5 November 2025 | Mikkeli Lentoasema, FI | daily high max | 11.7 C (53.1 F) | 2.0 C (3.6 F) | 11 years | 13 of 100 (Routine) |
| 20 September 2025 | Mikkeli Lentoasema, FI | daily rain | 14.2 mm (0.6 in) | 4.1 mm (0.16 in) | 35 years | 20 of 100 (Routine) |
| 18 September 2025 | Mikkeli Lentoasema, FI | daily rain | 12.7 mm (0.5 in) | 2.4 mm (0.09 in) | 56 years | 20 of 100 (Routine) |
| 16 September 2025 | Mikkeli Lentoasema, FI | daily high min | 11.4 C (52.5 F) | 0.1 C (0.2 F) | 32 years | 15 of 100 (Routine) |
| 15 September 2025 | Mikkeli Lentoasema, FI | daily high min | 12.4 C (54.3 F) | 0.2 C (0.4 F) | 48 years | 20 of 100 (Routine) |
| 11 September 2025 | Mikkeli Lentoasema, FI | daily high max | 23.1 C (73.6 F) | 1.3 C (2.3 F) | 8 years | 11 of 100 (Routine) |
| 7 September 2025 | Mikkeli Lentoasema, FI | daily high max | 24.3 C (75.7 F) | 0.4 C (0.7 F) | 0 years | 6 of 100 (Routine) |
| 23 August 2025 | Mikkeli Lentoasema, FI | daily low min | 0.9 C (33.6 F) | 0.3 C (0.5 F) | 59 years | 23 of 100 (Routine) |
| 30 July 2025 | Mikkeli Lentoasema, FI | daily high max | 31.0 C (87.8 F) | 0.5 C (0.9 F) | 31 years | 16 of 100 (Routine) |
| 30 July 2025 | Mikkeli Lentoasema, FI | daily high min | 19.5 C (67.1 F) | 0.6 C (1.1 F) | 15 years | 11 of 100 (Routine) |
Climate Trend
67 complete years, 1959 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1959 | 3.1 C | -0.49 C |
| 1960 | 2.3 C | -1.27 C |
| 1961 | 4.1 C | +0.49 C |
| 1962 | 2.2 C | -1.41 C |
| 1963 | 1.8 C | -1.82 C |
| 1964 | 2.6 C | -0.97 C |
| 1965 | 2.1 C | -1.51 C |
| 1966 | 1.0 C | -2.57 C |
| 1967 | 3.1 C | -0.54 C |
| 1968 | 2.1 C | -1.51 C |
| 1969 | 2.1 C | -1.54 C |
| 1970 | 2.5 C | -1.10 C |
| 1971 | 2.7 C | -0.92 C |
| 1972 | 4.2 C | +0.65 C |
| 1973 | 3.3 C | -0.27 C |
| 1974 | 4.6 C | +1.05 C |
| 1975 | 4.6 C | +1.04 C |
| 1976 | 1.6 C | -1.96 C |
| 1977 | 2.6 C | -0.98 C |
| 1978 | 1.5 C | -2.12 C |
| 1979 | 3.1 C | -0.53 C |
| 1980 | 2.6 C | -1.00 C |
| 1981 | 3.0 C | -0.60 C |
| 1982 | 3.2 C | -0.36 C |
| 1983 | 3.8 C | +0.24 C |
| 1984 | 4.0 C | +0.44 C |
| 1985 | 1.3 C | -2.31 C |
| 1986 | 2.9 C | -0.70 C |
| 1987 | 1.3 C | -2.34 C |
| 1988 | 3.8 C | +0.16 C |
| 1989 | 5.5 C | +1.86 C |
| 1990 | 4.4 C | +0.81 C |
| 1991 | 4.1 C | +0.51 C |
| 1992 | 4.3 C | +0.67 C |
| 1993 | 3.3 C | -0.28 C |
| 1994 | 3.5 C | -0.10 C |
| 1995 | 4.3 C | +0.71 C |
| 1996 | 3.0 C | -0.59 C |
| 1997 | 3.5 C | -0.06 C |
| 1998 | 3.1 C | -0.45 C |
| 1999 | 3.9 C | +0.33 C |
| 2000 | 5.1 C | +1.47 C |
| 2001 | 3.3 C | -0.31 C |
| 2002 | 3.3 C | -0.27 C |
| 2003 | 3.5 C | -0.10 C |
| 2004 | 3.6 C | +0.01 C |
| 2005 | 4.4 C | +0.77 C |
| 2006 | 3.9 C | +0.32 C |
| 2007 | 4.3 C | +0.71 C |
| 2008 | 5.0 C | +1.36 C |
| 2009 | 3.4 C | -0.16 C |
| 2010 | 2.3 C | -1.33 C |
| 2011 | 4.7 C | +1.12 C |
| 2012 | 3.0 C | -0.56 C |
| 2013 | 4.8 C | +1.17 C |
| 2014 | 5.2 C | +1.63 C |
| 2015 | 5.7 C | +2.08 C |
| 2016 | 4.4 C | +0.83 C |
| 2017 | 4.4 C | +0.83 C |
| 2018 | 4.7 C | +1.09 C |
| 2019 | 4.6 C | +1.05 C |
| 2020 | 6.3 C | +2.70 C |
| 2021 | 4.2 C | +0.62 C |
| 2022 | 5.0 C | +1.37 C |
| 2023 | 4.5 C | +0.87 C |
| 2024 | 5.2 C | +1.62 C |
| 2025 | 6.0 C | +2.44 C |
The annual mean temperature here has risen by 0.4 C (0.3 to 0.5) per decade over 1959 to 2025. In Fahrenheit: 0.7 F (0.5 to 0.9) per decade. The slope is a straight line fitted to 67 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.4 C (0.3 to 0.5) per decade | 0.7 F (0.5 to 0.9) per decade | 1959 to 2025 | 67 | Rise |
| Mean daily maximum | 0.4 C (0.3 to 0.6) per decade | 0.8 F (0.6 to 1.0) per decade | 1959 to 2025 | 67 | Rise |
| Mean daily minimum | 0.4 C (0.2 to 0.5) per decade | 0.7 F (0.4 to 0.9) per decade | 1959 to 2025 | 67 | 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
1959 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 33.2 C (91.8 F) | 2010 | 28.8 C (83.8 F) | 68 |
| Coldest night (TNn) | -37.5 C (-35.5 F) | 1967 | -30.4 C (-22.7 F) | 68 |
| Wettest day (Rx1day) | 63.4 mm (2.5 in) | 2014 | 27.5 mm (1.1 in) | 56 |
| Wettest five days (Rx5day) | 110.5 mm (4.4 in) | 1961 | 51.3 mm (2.0 in) | 56 |
| Longest dry spell (CDD) | 38 days | 1969 | 19 days | 56 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1959 | 28.3 C (82.9 F) |
| 1960 | 29.2 C (84.6 F) |
| 1961 | 27.2 C (81.0 F) |
| 1962 | 24.3 C (75.7 F) |
| 1963 | 30.1 C (86.2 F) |
| 1964 | 28.8 C (83.8 F) |
| 1965 | 26.2 C (79.2 F) |
| 1966 | 29.0 C (84.2 F) |
| 1967 | 29.0 C (84.2 F) |
| 1968 | 28.6 C (83.5 F) |
| 1969 | 27.7 C (81.9 F) |
| 1970 | 28.9 C (84.0 F) |
| 1971 | 26.7 C (80.1 F) |
| 1972 | 30.8 C (87.4 F) |
| 1973 | 28.7 C (83.7 F) |
| 1974 | 26.3 C (79.3 F) |
| 1975 | 27.8 C (82.0 F) |
| 1976 | 25.9 C (78.6 F) |
| 1977 | 29.5 C (85.1 F) |
| 1978 | 27.1 C (80.8 F) |
| 1979 | 26.9 C (80.4 F) |
| 1980 | 28.8 C (83.8 F) |
| 1981 | 27.0 C (80.6 F) |
| 1982 | 27.5 C (81.5 F) |
| 1983 | 28.2 C (82.8 F) |
| 1984 | 27.5 C (81.5 F) |
| 1985 | 27.8 C (82.0 F) |
| 1986 | 29.2 C (84.6 F) |
| 1987 | 26.8 C (80.2 F) |
| 1988 | 31.0 C (87.8 F) |
| 1989 | 28.3 C (82.9 F) |
| 1990 | 26.4 C (79.5 F) |
| 1991 | 27.0 C (80.6 F) |
| 1992 | 28.9 C (84.0 F) |
| 1993 | 26.4 C (79.5 F) |
| 1994 | 30.5 C (86.9 F) |
| 1995 | 29.0 C (84.2 F) |
| 1996 | 26.4 C (79.5 F) |
| 1997 | 29.9 C (85.8 F) |
| 1998 | 28.1 C (82.6 F) |
| 1999 | 30.4 C (86.7 F) |
| 2000 | 28.6 C (83.5 F) |
| 2001 | 29.6 C (85.3 F) |
| 2002 | 28.0 C (82.4 F) |
| 2003 | 30.1 C (86.2 F) |
| 2004 | 27.1 C (80.8 F) |
| 2005 | 29.4 C (84.9 F) |
| 2006 | 29.6 C (85.3 F) |
| 2007 | 28.2 C (82.8 F) |
| 2008 | 26.0 C (78.8 F) |
| 2009 | 27.7 C (81.9 F) |
| 2010 | 33.2 C (91.8 F) |
| 2011 | 30.8 C (87.4 F) |
| 2012 | 29.5 C (85.1 F) |
| 2013 | 30.2 C (86.4 F) |
| 2014 | 31.1 C (88.0 F) |
| 2015 | 30.1 C (86.2 F) |
| 2016 | 27.7 C (81.9 F) |
| 2017 | 26.8 C (80.2 F) |
| 2018 | 32.1 C (89.8 F) |
| 2019 | 31.4 C (88.5 F) |
| 2020 | 30.9 C (87.6 F) |
| 2021 | 33.1 C (91.6 F) |
| 2022 | 31.4 C (88.5 F) |
| 2023 | 30.7 C (87.3 F) |
| 2024 | 30.9 C (87.6 F) |
| 2025 | 31.2 C (88.2 F) |
| 2026 | 0.6 C (33.1 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1959 | -33.7 C (-28.7 F) |
| 1960 | -33.2 C (-27.8 F) |
| 1961 | -31.6 C (-24.9 F) |
| 1962 | -33.8 C (-28.8 F) |
| 1963 | -36.3 C (-33.3 F) |
| 1964 | -31.8 C (-25.2 F) |
| 1965 | -34.1 C (-29.4 F) |
| 1966 | -36.7 C (-34.1 F) |
| 1967 | -37.5 C (-35.5 F) |
| 1968 | -35.3 C (-31.5 F) |
| 1969 | -31.2 C (-24.2 F) |
| 1970 | -30.5 C (-22.9 F) |
| 1971 | -27.8 C (-18.0 F) |
| 1972 | -27.6 C (-17.7 F) |
| 1973 | -28.2 C (-18.8 F) |
| 1974 | -17.2 C (1.0 F) |
| 1975 | -25.7 C (-14.3 F) |
| 1976 | -30.7 C (-23.3 F) |
| 1977 | -27.5 C (-17.5 F) |
| 1978 | -33.0 C (-27.4 F) |
| 1979 | -31.2 C (-24.2 F) |
| 1980 | -32.1 C (-25.8 F) |
| 1981 | -25.5 C (-13.9 F) |
| 1982 | -31.0 C (-23.8 F) |
| 1983 | -24.5 C (-12.1 F) |
| 1984 | -23.6 C (-10.5 F) |
| 1985 | -34.7 C (-30.5 F) |
| 1986 | -27.0 C (-16.6 F) |
| 1987 | -36.8 C (-34.2 F) |
| 1988 | -25.9 C (-14.6 F) |
| 1989 | -25.5 C (-13.9 F) |
| 1990 | -27.5 C (-17.5 F) |
| 1991 | -27.7 C (-17.9 F) |
| 1992 | -23.0 C (-9.4 F) |
| 1993 | -26.0 C (-14.8 F) |
| 1994 | -31.2 C (-24.2 F) |
| 1995 | -29.3 C (-20.7 F) |
| 1996 | -30.2 C (-22.4 F) |
| 1997 | -24.4 C (-11.9 F) |
| 1998 | -31.0 C (-23.8 F) |
| 1999 | -32.6 C (-26.7 F) |
| 2000 | -25.5 C (-13.9 F) |
| 2001 | -32.4 C (-26.3 F) |
| 2002 | -30.7 C (-23.3 F) |
| 2003 | -36.0 C (-32.8 F) |
| 2004 | -27.1 C (-16.8 F) |
| 2005 | -27.6 C (-17.7 F) |
| 2006 | -31.6 C (-24.9 F) |
| 2007 | -34.9 C (-30.8 F) |
| 2008 | -22.5 C (-8.5 F) |
| 2009 | -27.7 C (-17.9 F) |
| 2010 | -31.6 C (-24.9 F) |
| 2011 | -35.1 C (-31.2 F) |
| 2012 | -34.6 C (-30.3 F) |
| 2013 | -31.5 C (-24.7 F) |
| 2014 | -27.3 C (-17.1 F) |
| 2015 | -25.0 C (-13.0 F) |
| 2016 | -33.4 C (-28.1 F) |
| 2017 | -25.9 C (-14.6 F) |
| 2018 | -28.1 C (-18.6 F) |
| 2019 | -30.7 C (-23.3 F) |
| 2020 | -15.9 C (3.4 F) |
| 2021 | -30.3 C (-22.5 F) |
| 2022 | -25.4 C (-13.7 F) |
| 2023 | -25.3 C (-13.5 F) |
| 2024 | -30.7 C (-23.3 F) |
| 2025 | -24.5 C (-12.1 F) |
| 2026 | -25.9 C (-14.6 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1959 | 24.2 mm (1.0 in) |
| 1960 | 33.1 mm (1.3 in) |
| 1961 | 35.2 mm (1.4 in) |
| 1962 | 23.0 mm (0.9 in) |
| 1963 | 32.5 mm (1.3 in) |
| 1964 | 20.1 mm (0.8 in) |
| 1965 | 24.9 mm (1.0 in) |
| 1966 | 32.7 mm (1.3 in) |
| 1967 | 14.6 mm (0.6 in) |
| 1968 | 23.8 mm (0.9 in) |
| 1969 | 26.9 mm (1.1 in) |
| 1970 | 19.1 mm (0.8 in) |
| 1971 | 20.0 mm (0.8 in) |
| 1972 | 40.8 mm (1.6 in) |
| 1973 | 44.2 mm (1.7 in) |
| 1974 | 51.4 mm (2.0 in) |
| 1975 | 30.6 mm (1.2 in) |
| 1976 | 20.6 mm (0.8 in) |
| 1977 | 25.2 mm (1.0 in) |
| 1978 | 23.0 mm (0.9 in) |
| 1979 | 24.5 mm (1.0 in) |
| 1980 | 33.5 mm (1.3 in) |
| 1981 | 28.7 mm (1.1 in) |
| 1982 | 22.0 mm (0.9 in) |
| 1983 | 46.2 mm (1.8 in) |
| 1984 | 19.2 mm (0.8 in) |
| 1985 | 24.1 mm (0.9 in) |
| 1986 | 24.0 mm (0.9 in) |
| 1987 | 29.2 mm (1.1 in) |
| 1988 | 41.3 mm (1.6 in) |
| 1989 | 28.7 mm (1.1 in) |
| 1990 | 26.8 mm (1.1 in) |
| 1991 | 60.1 mm (2.4 in) |
| 1992 | 25.9 mm (1.0 in) |
| 1993 | 23.5 mm (0.9 in) |
| 1994 | 34.8 mm (1.4 in) |
| 1995 | 27.7 mm (1.1 in) |
| 1996 | 26.3 mm (1.0 in) |
| 1997 | 15.7 mm (0.6 in) |
| 1998 | 27.3 mm (1.1 in) |
| 1999 | 42.7 mm (1.7 in) |
| 2000 | 40.6 mm (1.6 in) |
| 2001 | n/a |
| 2002 | n/a |
| 2003 | n/a |
| 2004 | n/a |
| 2005 | n/a |
| 2006 | n/a |
| 2007 | n/a |
| 2008 | n/a |
| 2009 | n/a |
| 2010 | n/a |
| 2011 | n/a |
| 2012 | n/a |
| 2013 | 14.8 mm (0.6 in) |
| 2014 | 63.4 mm (2.5 in) |
| 2015 | 25.4 mm (1.0 in) |
| 2016 | 39.0 mm (1.5 in) |
| 2017 | 37.6 mm (1.5 in) |
| 2018 | 24.1 mm (0.9 in) |
| 2019 | 30.9 mm (1.2 in) |
| 2020 | 27.8 mm (1.1 in) |
| 2021 | 39.0 mm (1.5 in) |
| 2022 | 30.6 mm (1.2 in) |
| 2023 | 46.7 mm (1.8 in) |
| 2024 | 27.6 mm (1.1 in) |
| 2025 | 24.7 mm (1.0 in) |
| 2026 | 4.0 mm (0.16 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1959 | 80.0 mm (3.1 in) |
| 1960 | 54.8 mm (2.2 in) |
| 1961 | 110.5 mm (4.4 in) |
| 1962 | 46.5 mm (1.8 in) |
| 1963 | 41.0 mm (1.6 in) |
| 1964 | 51.5 mm (2.0 in) |
| 1965 | 47.2 mm (1.9 in) |
| 1966 | 59.4 mm (2.3 in) |
| 1967 | 33.7 mm (1.3 in) |
| 1968 | 39.8 mm (1.6 in) |
| 1969 | 42.3 mm (1.7 in) |
| 1970 | 51.3 mm (2.0 in) |
| 1971 | 37.7 mm (1.5 in) |
| 1972 | 53.9 mm (2.1 in) |
| 1973 | 80.3 mm (3.2 in) |
| 1974 | 75.9 mm (3.0 in) |
| 1975 | 41.4 mm (1.6 in) |
| 1976 | 39.9 mm (1.6 in) |
| 1977 | 46.6 mm (1.8 in) |
| 1978 | 34.5 mm (1.4 in) |
| 1979 | 48.3 mm (1.9 in) |
| 1980 | 57.7 mm (2.3 in) |
| 1981 | 53.0 mm (2.1 in) |
| 1982 | 37.4 mm (1.5 in) |
| 1983 | 51.6 mm (2.0 in) |
| 1984 | 52.8 mm (2.1 in) |
| 1985 | 40.6 mm (1.6 in) |
| 1986 | 52.8 mm (2.1 in) |
| 1987 | 55.8 mm (2.2 in) |
| 1988 | 41.4 mm (1.6 in) |
| 1989 | 51.5 mm (2.0 in) |
| 1990 | 56.5 mm (2.2 in) |
| 1991 | 67.7 mm (2.7 in) |
| 1992 | 35.1 mm (1.4 in) |
| 1993 | 47.2 mm (1.9 in) |
| 1994 | 57.0 mm (2.2 in) |
| 1995 | 44.8 mm (1.8 in) |
| 1996 | 47.6 mm (1.9 in) |
| 1997 | 36.0 mm (1.4 in) |
| 1998 | 51.3 mm (2.0 in) |
| 1999 | 59.2 mm (2.3 in) |
| 2000 | 53.4 mm (2.1 in) |
| 2001 | n/a |
| 2002 | n/a |
| 2003 | n/a |
| 2004 | n/a |
| 2005 | n/a |
| 2006 | n/a |
| 2007 | n/a |
| 2008 | n/a |
| 2009 | n/a |
| 2010 | n/a |
| 2011 | n/a |
| 2012 | n/a |
| 2013 | 24.3 mm (1.0 in) |
| 2014 | 83.5 mm (3.3 in) |
| 2015 | 41.4 mm (1.6 in) |
| 2016 | 98.2 mm (3.9 in) |
| 2017 | 73.6 mm (2.9 in) |
| 2018 | 34.0 mm (1.3 in) |
| 2019 | 35.0 mm (1.4 in) |
| 2020 | 54.0 mm (2.1 in) |
| 2021 | 66.3 mm (2.6 in) |
| 2022 | 42.5 mm (1.7 in) |
| 2023 | 67.8 mm (2.7 in) |
| 2024 | 37.3 mm (1.5 in) |
| 2025 | 53.6 mm (2.1 in) |
| 2026 | 7.7 mm (0.30 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1959 | 16 days |
| 1960 | 19 days |
| 1961 | 22 days |
| 1962 | 14 days |
| 1963 | 34 days |
| 1964 | 22 days |
| 1965 | 36 days |
| 1966 | 16 days |
| 1967 | 13 days |
| 1968 | 17 days |
| 1969 | 38 days |
| 1970 | 19 days |
| 1971 | 13 days |
| 1972 | 36 days |
| 1973 | 17 days |
| 1974 | 19 days |
| 1975 | 21 days |
| 1976 | 24 days |
| 1977 | 15 days |
| 1978 | 33 days |
| 1979 | 20 days |
| 1980 | 23 days |
| 1981 | 23 days |
| 1982 | 20 days |
| 1983 | 16 days |
| 1984 | 19 days |
| 1985 | 13 days |
| 1986 | 18 days |
| 1987 | 19 days |
| 1988 | 15 days |
| 1989 | 14 days |
| 1990 | 21 days |
| 1991 | 16 days |
| 1992 | 29 days |
| 1993 | 13 days |
| 1994 | 17 days |
| 1995 | 15 days |
| 1996 | 23 days |
| 1997 | 24 days |
| 1998 | 16 days |
| 1999 | 23 days |
| 2000 | 19 days |
| 2001 | n/a |
| 2002 | n/a |
| 2003 | n/a |
| 2004 | n/a |
| 2005 | n/a |
| 2006 | n/a |
| 2007 | n/a |
| 2008 | n/a |
| 2009 | n/a |
| 2010 | n/a |
| 2011 | n/a |
| 2012 | n/a |
| 2013 | 3 days |
| 2014 | 21 days |
| 2015 | 20 days |
| 2016 | 24 days |
| 2017 | 23 days |
| 2018 | 23 days |
| 2019 | 22 days |
| 2020 | 17 days |
| 2021 | 16 days |
| 2022 | 17 days |
| 2023 | 29 days |
| 2024 | 16 days |
| 2025 | 19 days |
| 2026 | 20 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
67 years with a frostAcross 67 years with a frost, the median last spring frost at Mikkeli Lentoasema falls on 25 May and the median first autumn frost on 16 September, which leaves a median of 113 days between them.
In 1996 to 2025 the median growing season was 111 days. That is 2 days fewer than in 1959 to 1988.
Fitted over all years, the growing season changes by +3.9 days per decade at this station.
| Measure | Median, all years | Earliest period (1959 to 1988) | Recent period (1996 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 25 May | 25 May | 27 May | 2 days later | -1.1 days per decade |
| First autumn frost | 16 September | 16 September | 16 September | no change | +2.8 days per decade |
| Growing days | 113 days | 113 days | 111 days | 2 days fewer | +3.9 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
53 years, 1959 to 2025A day with at least 28.0 mm (1.1 in) of rain is expected about once in 2 years. A day with at least 69.1 mm (2.7 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 28.0 mm (1.1 in) | |
| 5 years | 36.9 mm (1.5 in) | |
| 10 years | 43.5 mm (1.7 in) | |
| 25 years | 52.9 mm (2.1 in) | |
| 50 years | 60.6 mm (2.4 in) | |
| 100 years | 69.1 mm (2.7 in) | Longer than the 53 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, 53 years of values from 1959 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: 63.4 mm (2.5 in) in 2014; 60.1 mm (2.4 in) in 1991; 51.4 mm (2.0 in) in 1974.
Station Changes
3 suspected3 changes were suspected in the annual mean temperature of Mikkeli Lentoasema, at 1968, 1997 and 2014. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1968 ran 0.5 C (0.8 F) higher than in the years before (likely change).
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1997 ran 0.3 C (0.5 F) lower than in the years before (likely change).
- Relative to 5 neighbouring stations, the station's annual mean temperature from 2014 ran 0.2 C (0.4 F) higher than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1968 | +0.5 | +0.8 | likely | 5 |
| 1997 | -0.3 | -0.5 | likely | 5 |
| 2014 | +0.2 | +0.4 | likely | 5 |
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
Climate Twins
2011 to 2025 against 1961 to 1990Over 2011 to 2025, Mikkeli Lentoasema had a mean temperature of 4.9 C (40.7 F) and 621.9 mm (24.5 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Helsinki Ilmala (Finland, 207 km away), Turku Turun Lentoasema (Finland, 295 km away) and Lohja Porla (Finland, 234 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Helsinki Ilmala | Finland | 207 km (129 mi) | 4.8 C (40.7 F) | 619.2 mm (24.4 in) | 0.57 |
| Turku Turun Lentoasema | Finland | 295 km (183 mi) | 4.8 C (40.6 F) | 661.6 mm (26.0 in) | 0.59 |
| Lohja Porla | Finland | 234 km (145 mi) | 4.8 C (40.6 F) | 689.8 mm (27.2 in) | 0.60 |
Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.
Download the Data
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.
Data as of . Last revised (2025-12-31).