Owatonna Weather Records (USC00216287)
Record envelope, standing records and threshold days for Owatonna (USC00216287), Minnesota, United States, with 66 years of record.
Key Facts for Owatonna
- Owatonna (USC00216287) is a weather station in Minnesota, United States at 44.10 latitude and -93.23 longitude, 348 m (1,140 ft) above sea level.
- The station reports from 1961 to 2026, 66 years of record.
- 1,464 records set at Owatonna still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Owatonna set a daily record high minimum temperature of 17.2 C (63.0 F) on 12 October 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: Minnesota, United States, 44.10 latitude, -93.23 longitude.
- Elevation: 348 m (1,140 ft).
- Period of record: 1961 to 2026, 66 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
9 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 14.4 C (57.9 F) | -37.2 C (-35.0 F) | 6.1 C (43.0 F) | -29.4 C (-20.9 F) |
| Feb | 20.6 C (69.1 F) | -36.7 C (-34.1 F) | 12.8 C (55.0 F) | -20.0 C (-4.0 F) |
| Mar | 27.2 C (81.0 F) | -35.6 C (-32.1 F) | 26.1 C (79.0 F) | -20.0 C (-4.0 F) |
| Apr | 33.3 C (91.9 F) | -17.8 C (0.0 F) | 29.4 C (84.9 F) | -6.1 C (21.0 F) |
| May | 36.7 C (98.1 F) | -11.1 C (12.0 F) | 32.2 C (90.0 F) | -1.7 C (28.9 F) |
| Jun | 38.9 C (102.0 F) | 0.6 C (33.1 F) | 32.2 C (90.0 F) | 8.9 C (48.0 F) |
| Jul | 38.9 C (102.0 F) | 5.6 C (42.1 F) | 33.9 C (93.0 F) | 11.7 C (53.1 F) |
| Aug | 38.9 C (102.0 F) | 2.2 C (36.0 F) | 30.0 C (86.0 F) | 10.6 C (51.1 F) |
| Sep | 36.7 C (98.1 F) | -5.0 C (23.0 F) | 33.9 C (93.0 F) | 8.3 C (46.9 F) |
| Oct | 33.9 C (93.0 F) | -10.6 C (12.9 F) | 32.2 C (90.0 F) | 3.3 C (37.9 F) |
| Nov | 25.6 C (78.1 F) | -26.1 C (-15.0 F) | n/a | n/a |
| Dec | 19.4 C (66.9 F) | -35.6 C (-32.1 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1961 | 10 |
| 1962 | 36 |
| 1963 | 23 |
| 1964 | 33 |
| 1965 | 29 |
| 1966 | 23 |
| 1967 | 24 |
| 1968 | 32 |
| 1969 | 18 |
| 1970 | 22 |
| 1971 | 22 |
| 1972 | 26 |
| 1973 | 12 |
| 1974 | 29 |
| 1975 | 21 |
| 1976 | 24 |
| 1977 | 29 |
| 1978 | 18 |
| 1979 | 15 |
| 1980 | 16 |
| 1981 | 23 |
| 1982 | 12 |
| 1983 | 35 |
| 1984 | 21 |
| 1985 | 28 |
| 1986 | 21 |
| 1987 | 31 |
| 1988 | 36 |
| 1989 | 22 |
| 1990 | 31 |
| 1991 | 43 |
| 1992 | 29 |
| 1993 | 9 |
| 1994 | 16 |
| 1995 | 20 |
| 1996 | 26 |
| 1997 | 29 |
| 1998 | 21 |
| 1999 | 17 |
| 2000 | 25 |
| 2001 | 20 |
| 2002 | 17 |
| 2003 | 12 |
| 2004 | 29 |
| 2005 | 20 |
| 2006 | 18 |
| 2007 | 9 |
| 2008 | 11 |
| 2009 | 26 |
| 2010 | 20 |
| 2011 | 19 |
| 2012 | 32 |
| 2013 | 19 |
| 2014 | 25 |
| 2015 | 23 |
| 2016 | 13 |
| 2017 | 20 |
| 2018 | 27 |
| 2019 | 18 |
| 2020 | 25 |
| 2021 | 28 |
| 2022 | 14 |
| 2023 | 35 |
| 2024 | 10 |
| 2025 | 10 |
| 2026 | 7 |
All-Time Record Progression
4 new records| Date | Kind | Detail |
|---|---|---|
| 1994-01-18 | Record low maximum temperature | Record low maximum temperature -28.3 C (-18.9 F) |
| 2007-08-19 | Record daily precipitation | Record daily precipitation 164.3 mm (6.5 in) |
| 2010-12-12 | Record daily snowfall | Record daily snowfall 35.6 cm (14.0 in) |
| 2013-05-02 | Record daily snowfall | Record daily snowfall 38.1 cm (15.0 in) |
Wettest Day of Each Month
Aug: 164.3 mm (6.5 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 44.5 mm (1.8 in) | 13 January 1999 |
| Feb | 45.2 mm (1.8 in) | 29 February 2012 |
| Mar | 80.5 mm (3.2 in) | 30 March 2025 |
| Apr | 55.1 mm (2.2 in) | 14 April 1983 |
| May | 60.2 mm (2.4 in) | 1 May 1973 |
| Jun | 111.8 mm (4.4 in) | 10 June 2006 |
| Jul | 123.4 mm (4.9 in) | 1 July 1983 |
| Aug | 164.3 mm (6.5 in) | 19 August 2007 |
| Sep | 161.0 mm (6.3 in) | 23 September 2010 |
| Oct | 82.8 mm (3.3 in) | 7 October 1992 |
| Nov | 56.9 mm (2.2 in) | 12 November 2015 |
| Dec | 42.4 mm (1.7 in) | 28 December 1982 |
Period of Record Coverage
1961 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1961 | 288 | 79% | No |
| 1962 | 305 | 84% | No |
| 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 | 364 | 100% | Yes |
| 1972 | 364 | 99% | Yes |
| 1973 | 365 | 100% | Yes |
| 1974 | 364 | 100% | Yes |
| 1975 | 364 | 100% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 365 | 100% | Yes |
| 1978 | 364 | 100% | Yes |
| 1979 | 365 | 100% | Yes |
| 1980 | 366 | 100% | Yes |
| 1981 | 363 | 99% | Yes |
| 1982 | 362 | 99% | Yes |
| 1983 | 362 | 99% | Yes |
| 1984 | 359 | 98% | Yes |
| 1985 | 363 | 99% | Yes |
| 1986 | 363 | 99% | Yes |
| 1987 | 363 | 99% | Yes |
| 1988 | 356 | 97% | Yes |
| 1989 | 361 | 99% | Yes |
| 1990 | 364 | 100% | Yes |
| 1991 | 365 | 100% | Yes |
| 1992 | 365 | 100% | Yes |
| 1993 | 362 | 99% | Yes |
| 1994 | 362 | 99% | Yes |
| 1995 | 363 | 99% | Yes |
| 1996 | 365 | 100% | Yes |
| 1997 | 365 | 100% | Yes |
| 1998 | 303 | 83% | No |
| 1999 | 364 | 100% | Yes |
| 2000 | 365 | 100% | Yes |
| 2001 | 365 | 100% | Yes |
| 2002 | 365 | 100% | Yes |
| 2003 | 363 | 99% | Yes |
| 2004 | 365 | 100% | Yes |
| 2005 | 333 | 91% | Yes |
| 2006 | 364 | 100% | Yes |
| 2007 | 363 | 99% | Yes |
| 2008 | 365 | 100% | Yes |
| 2009 | 365 | 100% | Yes |
| 2010 | 365 | 100% | Yes |
| 2011 | 365 | 100% | Yes |
| 2012 | 366 | 100% | Yes |
| 2013 | 365 | 100% | Yes |
| 2014 | 362 | 99% | Yes |
| 2015 | 365 | 100% | Yes |
| 2016 | 366 | 100% | Yes |
| 2017 | 363 | 99% | Yes |
| 2018 | 364 | 100% | Yes |
| 2019 | 365 | 100% | Yes |
| 2020 | 365 | 100% | Yes |
| 2021 | 365 | 100% | Yes |
| 2022 | 363 | 99% | Yes |
| 2023 | 363 | 99% | Yes |
| 2024 | 245 | 67% | No |
| 2025 | 266 | 73% | No |
| 2026 | 278 | 76% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 12 October 2026 | Owatonna, US | daily high min (Provisional) | 17.2 C (63.0 F) | 0.5 C (0.9 F) | 28 years | 14 of 100 (Routine) |
| 12 October 2026 | Owatonna, US | daily high max (Provisional) | 32.2 C (90.0 F) | 2.2 C (4.0 F) | 11 years | 12 of 100 (Routine) |
| 11 October 2026 | Owatonna, US | daily high max (Provisional) | 30.6 C (87.1 F) | 2.3 C (4.1 F) | 64 years | 28 of 100 (Routine) |
| 11 October 2026 | Owatonna, US | daily high min (Provisional) | 17.2 C (63.0 F) | 2.2 C (4.0 F) | 41 years | 22 of 100 (Routine) |
| 1 August 2026 | Owatonna, US | daily low max | 18.9 C (66.0 F) | 4.4 C (7.9 F) | 31 years | 27 of 100 (Routine) |
| 27 July 2026 | Owatonna, US | all-time high min (Tie) | 26.7 C (80.1 F) | tie | 38 years | 9 of 100 (Routine) |
| 27 July 2026 | Owatonna, US | daily high max (Tie) | 33.9 C (93.0 F) | tie | 39 years | 4 of 100 (Routine) |
| 24 June 2026 | Owatonna, US | daily rain | 25.7 mm (1.0 in) | 5.4 mm (0.21 in) | 7 years | 11 of 100 (Routine) |
| 8 June 2026 | Owatonna, US | daily rain | 34.3 mm (1.4 in) | 7.6 mm (0.30 in) | 20 years | 17 of 100 (Routine) |
| 26 May 2026 | Owatonna, US | daily high min (Tie) | 19.4 C (66.9 F) | tie | 59 years | 5 of 100 (Routine) |
| 23 April 2026 | Owatonna, US | daily high max (Tie) | 29.4 C (84.9 F) | tie | 45 years | 4 of 100 (Routine) |
| 22 March 2026 | Owatonna, US | daily high max | 25.6 C (78.1 F) | 4.5 C (8.1 F) | 4 years | 13 of 100 (Routine) |
| 18 March 2026 | Owatonna, US | daily low min (Tie) | -20.0 C (-4.0 F) | tie | 36 years | 4 of 100 (Routine) |
| 17 March 2026 | Owatonna, US | daily low max | -10.0 C (14.0 F) | 0.6 C (1.1 F) | 32 years | 15 of 100 (Routine) |
| 15 March 2026 | Owatonna, US | daily snowfall | 27.9 cm (11.0 in) | 17.2 cm (6.8 in) | 43 years | 48 of 100 (Notable) |
| 15 March 2026 | Owatonna, US | daily rain | 19.1 mm (0.8 in) | 3.9 mm (0.15 in) | 36 years | 20 of 100 (Routine) |
| 9 March 2026 | Owatonna, US | daily high min (Tie) | 2.2 C (36.0 F) | tie | 57 years | 5 of 100 (Routine) |
| 7 March 2026 | Owatonna, US | daily rain | 18.8 mm (0.7 in) | 5.6 mm (0.22 in) | 8 years | 14 of 100 (Routine) |
| 15 February 2026 | Owatonna, US | daily high max | 12.2 C (54.0 F) | 2.8 C (5.0 F) | 44 years | 22 of 100 (Routine) |
| 14 February 2026 | Owatonna, US | daily high max | 9.4 C (48.9 F) | 1.6 C (2.9 F) | 8 years | 10 of 100 (Routine) |
Climate Trend
59 complete years, 1963 to 2023| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1963 | 7.0 C | -0.36 C |
| 1964 | 7.5 C | +0.17 C |
| 1965 | 6.5 C | -0.85 C |
| 1966 | 6.6 C | -0.77 C |
| 1967 | 6.9 C | -0.45 C |
| 1968 | 7.8 C | +0.44 C |
| 1969 | 6.7 C | -0.63 C |
| 1970 | 7.0 C | -0.33 C |
| 1971 | 7.3 C | -0.08 C |
| 1972 | 6.0 C | -1.37 C |
| 1973 | 8.2 C | +0.87 C |
| 1974 | 7.2 C | -0.17 C |
| 1975 | 7.0 C | -0.39 C |
| 1976 | 7.6 C | +0.23 C |
| 1977 | 8.0 C | +0.65 C |
| 1978 | 6.4 C | -1.00 C |
| 1979 | 6.2 C | -1.15 C |
| 1980 | 7.9 C | +0.49 C |
| 1981 | 8.5 C | +1.12 C |
| 1982 | 7.0 C | -0.42 C |
| 1983 | 7.8 C | +0.46 C |
| 1984 | 7.8 C | +0.40 C |
| 1985 | 6.9 C | -0.46 C |
| 1986 | 8.0 C | +0.62 C |
| 1987 | 10.1 C | +2.70 C |
| 1988 | 8.3 C | +0.93 C |
| 1989 | 7.1 C | -0.27 C |
| 1990 | 9.1 C | +1.71 C |
| 1991 | 8.3 C | +0.95 C |
| 1992 | 7.8 C | +0.40 C |
| 1993 | 6.4 C | -0.97 C |
| 1994 | 7.8 C | +0.43 C |
| 1995 | 7.7 C | +0.29 C |
| 1996 | 5.0 C | -2.34 C |
| 1997 | 6.3 C | -1.08 C |
| 1999 | 8.1 C | +0.71 C |
| 2000 | 7.3 C | -0.04 C |
| 2001 | 7.7 C | +0.30 C |
| 2002 | 7.6 C | +0.18 C |
| 2003 | 7.0 C | -0.38 C |
| 2004 | 7.1 C | -0.26 C |
| 2006 | 8.4 C | +1.03 C |
| 2007 | 7.6 C | +0.25 C |
| 2008 | 6.0 C | -1.36 C |
| 2009 | 6.3 C | -1.08 C |
| 2010 | 7.2 C | -0.21 C |
| 2011 | 7.3 C | -0.08 C |
| 2012 | 9.5 C | +2.11 C |
| 2013 | 6.0 C | -1.33 C |
| 2014 | 5.2 C | -2.18 C |
| 2015 | 7.7 C | +0.33 C |
| 2016 | 8.8 C | +1.45 C |
| 2017 | 8.1 C | +0.71 C |
| 2018 | 6.6 C | -0.76 C |
| 2019 | 6.1 C | -1.28 C |
| 2020 | 7.7 C | +0.33 C |
| 2021 | 8.5 C | +1.12 C |
| 2022 | 6.5 C | -0.84 C |
| 2023 | 8.7 C | +1.30 C |
The fitted trend in annual mean temperature here over 1963 to 2023 is 0.03 C (-0.11 to 0.17) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.2 to 0.3) per decade. The slope is a straight line fitted to 59 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.03 C (-0.11 to 0.17) per decade | 0.1 F (-0.2 to 0.3) per decade | 1963 to 2023 | 59 | Not clearly different from zero |
| Mean daily maximum | -0.17 C (-0.34 to -0.01) per decade | -0.31 F (-0.62 to -0.01) per decade | 1963 to 2023 | 59 | Fall |
| Mean daily minimum | 0.2 C (0.1 to 0.4) per decade | 0.4 F (0.2 to 0.7) per decade | 1963 to 2023 | 59 | 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
1961 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 38.9 C (102.0 F) | 1985 | 35.6 C (96.1 F) | 66 |
| Coldest night (TNn) | -37.2 C (-35.0 F) | 1977 | -30.6 C (-23.1 F) | 66 |
| Wettest day (Rx1day) | 164.3 mm (6.5 in) | 2007 | 63.5 mm (2.5 in) | 66 |
| Wettest five days (Rx5day) | 217.4 mm (8.6 in) | 2010 | 90.3 mm (3.6 in) | 66 |
| Longest dry spell (CDD) | 50 days | 1962 | 23 days | 66 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1961 | 35.0 C (95.0 F) |
| 1962 | 32.8 C (91.0 F) |
| 1963 | 35.0 C (95.0 F) |
| 1964 | 35.6 C (96.1 F) |
| 1965 | 35.6 C (96.1 F) |
| 1966 | 36.7 C (98.1 F) |
| 1967 | 32.8 C (91.0 F) |
| 1968 | 34.4 C (93.9 F) |
| 1969 | 34.4 C (93.9 F) |
| 1970 | 36.7 C (98.1 F) |
| 1971 | 35.0 C (95.0 F) |
| 1972 | 35.6 C (96.1 F) |
| 1973 | 35.0 C (95.0 F) |
| 1974 | 36.7 C (98.1 F) |
| 1975 | 35.0 C (95.0 F) |
| 1976 | 36.1 C (97.0 F) |
| 1977 | 36.1 C (97.0 F) |
| 1978 | 36.7 C (98.1 F) |
| 1979 | 33.9 C (93.0 F) |
| 1980 | 37.8 C (100.0 F) |
| 1981 | 33.9 C (93.0 F) |
| 1982 | 37.2 C (99.0 F) |
| 1983 | 36.7 C (98.1 F) |
| 1984 | 35.6 C (96.1 F) |
| 1985 | 38.9 C (102.0 F) |
| 1986 | 34.4 C (93.9 F) |
| 1987 | 38.3 C (100.9 F) |
| 1988 | 38.9 C (102.0 F) |
| 1989 | 36.1 C (97.0 F) |
| 1990 | 38.9 C (102.0 F) |
| 1991 | 36.1 C (97.0 F) |
| 1992 | 32.8 C (91.0 F) |
| 1993 | 32.2 C (90.0 F) |
| 1994 | 34.4 C (93.9 F) |
| 1995 | 38.9 C (102.0 F) |
| 1996 | 35.0 C (95.0 F) |
| 1997 | 33.9 C (93.0 F) |
| 1998 | 33.9 C (93.0 F) |
| 1999 | 35.6 C (96.1 F) |
| 2000 | 35.6 C (96.1 F) |
| 2001 | 35.0 C (95.0 F) |
| 2002 | 35.6 C (96.1 F) |
| 2003 | 36.1 C (97.0 F) |
| 2004 | 33.9 C (93.0 F) |
| 2005 | 35.0 C (95.0 F) |
| 2006 | 37.2 C (99.0 F) |
| 2007 | 34.4 C (93.9 F) |
| 2008 | 32.8 C (91.0 F) |
| 2009 | 34.4 C (93.9 F) |
| 2010 | 34.4 C (93.9 F) |
| 2011 | 37.8 C (100.0 F) |
| 2012 | 37.8 C (100.0 F) |
| 2013 | 36.1 C (97.0 F) |
| 2014 | 32.2 C (90.0 F) |
| 2015 | 34.4 C (93.9 F) |
| 2016 | 36.1 C (97.0 F) |
| 2017 | 35.0 C (95.0 F) |
| 2018 | 36.7 C (98.1 F) |
| 2019 | 34.4 C (93.9 F) |
| 2020 | 35.6 C (96.1 F) |
| 2021 | 36.1 C (97.0 F) |
| 2022 | 36.1 C (97.0 F) |
| 2023 | 36.1 C (97.0 F) |
| 2024 | 34.4 C (93.9 F) |
| 2025 | 35.0 C (95.0 F) |
| 2026 | 33.9 C (93.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1961 | -28.9 C (-20.0 F) |
| 1962 | -35.6 C (-32.1 F) |
| 1963 | -35.0 C (-31.0 F) |
| 1964 | -25.6 C (-14.1 F) |
| 1965 | -32.2 C (-26.0 F) |
| 1966 | -33.9 C (-29.0 F) |
| 1967 | -35.6 C (-32.1 F) |
| 1968 | -31.1 C (-24.0 F) |
| 1969 | -30.0 C (-22.0 F) |
| 1970 | -35.0 C (-31.0 F) |
| 1971 | -33.3 C (-27.9 F) |
| 1972 | -33.9 C (-29.0 F) |
| 1973 | -31.7 C (-25.1 F) |
| 1974 | -34.4 C (-29.9 F) |
| 1975 | -30.0 C (-22.0 F) |
| 1976 | -30.6 C (-23.1 F) |
| 1977 | -37.2 C (-35.0 F) |
| 1978 | -30.0 C (-22.0 F) |
| 1979 | -31.1 C (-24.0 F) |
| 1980 | -25.6 C (-14.1 F) |
| 1981 | -30.6 C (-23.1 F) |
| 1982 | -33.3 C (-27.9 F) |
| 1983 | -35.6 C (-32.1 F) |
| 1984 | -28.9 C (-20.0 F) |
| 1985 | -36.7 C (-34.1 F) |
| 1986 | -31.7 C (-25.1 F) |
| 1987 | -26.7 C (-16.1 F) |
| 1988 | -30.6 C (-23.1 F) |
| 1989 | -31.7 C (-25.1 F) |
| 1990 | -30.0 C (-22.0 F) |
| 1991 | -26.1 C (-15.0 F) |
| 1992 | -26.1 C (-15.0 F) |
| 1993 | -27.8 C (-18.0 F) |
| 1994 | -33.9 C (-29.0 F) |
| 1995 | -24.4 C (-11.9 F) |
| 1996 | -36.7 C (-34.1 F) |
| 1997 | -27.2 C (-17.0 F) |
| 1998 | -34.4 C (-29.9 F) |
| 1999 | -30.6 C (-23.1 F) |
| 2000 | -30.6 C (-23.1 F) |
| 2001 | -31.1 C (-24.0 F) |
| 2002 | -20.6 C (-5.1 F) |
| 2003 | -26.7 C (-16.1 F) |
| 2004 | -30.0 C (-22.0 F) |
| 2005 | -26.1 C (-15.0 F) |
| 2006 | -26.7 C (-16.1 F) |
| 2007 | -27.2 C (-17.0 F) |
| 2008 | -31.1 C (-24.0 F) |
| 2009 | -34.4 C (-29.9 F) |
| 2010 | -35.6 C (-32.1 F) |
| 2011 | -30.0 C (-22.0 F) |
| 2012 | -24.4 C (-11.9 F) |
| 2013 | -31.7 C (-25.1 F) |
| 2014 | -34.4 C (-29.9 F) |
| 2015 | -26.1 C (-15.0 F) |
| 2016 | -31.1 C (-24.0 F) |
| 2017 | -26.7 C (-16.1 F) |
| 2018 | -28.3 C (-18.9 F) |
| 2019 | -33.9 C (-29.0 F) |
| 2020 | -26.7 C (-16.1 F) |
| 2021 | -31.1 C (-24.0 F) |
| 2022 | -27.8 C (-18.0 F) |
| 2023 | -26.1 C (-15.0 F) |
| 2024 | -25.0 C (-13.0 F) |
| 2025 | -23.9 C (-11.0 F) |
| 2026 | -29.4 C (-20.9 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1961 | 53.1 mm (2.1 in) |
| 1962 | 88.6 mm (3.5 in) |
| 1963 | 41.1 mm (1.6 in) |
| 1964 | 50.5 mm (2.0 in) |
| 1965 | 121.9 mm (4.8 in) |
| 1966 | 67.6 mm (2.7 in) |
| 1967 | 48.3 mm (1.9 in) |
| 1968 | 51.3 mm (2.0 in) |
| 1969 | 41.1 mm (1.6 in) |
| 1970 | 63.5 mm (2.5 in) |
| 1971 | 38.4 mm (1.5 in) |
| 1972 | 42.4 mm (1.7 in) |
| 1973 | 91.4 mm (3.6 in) |
| 1974 | 40.9 mm (1.6 in) |
| 1975 | 35.8 mm (1.4 in) |
| 1976 | 61.7 mm (2.4 in) |
| 1977 | 52.8 mm (2.1 in) |
| 1978 | 42.7 mm (1.7 in) |
| 1979 | 63.5 mm (2.5 in) |
| 1980 | 56.1 mm (2.2 in) |
| 1981 | 82.6 mm (3.3 in) |
| 1982 | 50.8 mm (2.0 in) |
| 1983 | 123.4 mm (4.9 in) |
| 1984 | 52.3 mm (2.1 in) |
| 1985 | 69.3 mm (2.7 in) |
| 1986 | 70.1 mm (2.8 in) |
| 1987 | 52.8 mm (2.1 in) |
| 1988 | 33.5 mm (1.3 in) |
| 1989 | 76.2 mm (3.0 in) |
| 1990 | 81.5 mm (3.2 in) |
| 1991 | 78.7 mm (3.1 in) |
| 1992 | 82.8 mm (3.3 in) |
| 1993 | 79.2 mm (3.1 in) |
| 1994 | 112.0 mm (4.4 in) |
| 1995 | 40.6 mm (1.6 in) |
| 1996 | 62.2 mm (2.4 in) |
| 1997 | 71.1 mm (2.8 in) |
| 1998 | 39.4 mm (1.6 in) |
| 1999 | 58.9 mm (2.3 in) |
| 2000 | 74.9 mm (2.9 in) |
| 2001 | 88.9 mm (3.5 in) |
| 2002 | 53.8 mm (2.1 in) |
| 2003 | 42.4 mm (1.7 in) |
| 2004 | 81.3 mm (3.2 in) |
| 2005 | 97.8 mm (3.9 in) |
| 2006 | 111.8 mm (4.4 in) |
| 2007 | 164.3 mm (6.5 in) |
| 2008 | 45.7 mm (1.8 in) |
| 2009 | 48.3 mm (1.9 in) |
| 2010 | 161.0 mm (6.3 in) |
| 2011 | 73.4 mm (2.9 in) |
| 2012 | 107.7 mm (4.2 in) |
| 2013 | 47.0 mm (1.9 in) |
| 2014 | 61.0 mm (2.4 in) |
| 2015 | 56.9 mm (2.2 in) |
| 2016 | 117.6 mm (4.6 in) |
| 2017 | 57.2 mm (2.3 in) |
| 2018 | 82.6 mm (3.3 in) |
| 2019 | 70.1 mm (2.8 in) |
| 2020 | 66.0 mm (2.6 in) |
| 2021 | 56.6 mm (2.2 in) |
| 2022 | 75.2 mm (3.0 in) |
| 2023 | 49.5 mm (1.9 in) |
| 2024 | 83.1 mm (3.3 in) |
| 2025 | 80.5 mm (3.2 in) |
| 2026 | 63.5 mm (2.5 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1961 | 69.0 mm (2.7 in) |
| 1962 | 117.3 mm (4.6 in) |
| 1963 | 67.3 mm (2.6 in) |
| 1964 | 79.8 mm (3.1 in) |
| 1965 | 138.9 mm (5.5 in) |
| 1966 | 75.2 mm (3.0 in) |
| 1967 | 147.1 mm (5.8 in) |
| 1968 | 84.6 mm (3.3 in) |
| 1969 | 55.4 mm (2.2 in) |
| 1970 | 109.5 mm (4.3 in) |
| 1971 | 82.4 mm (3.2 in) |
| 1972 | 68.4 mm (2.7 in) |
| 1973 | 103.7 mm (4.1 in) |
| 1974 | 59.2 mm (2.3 in) |
| 1975 | 72.1 mm (2.8 in) |
| 1976 | 62.7 mm (2.5 in) |
| 1977 | 67.8 mm (2.7 in) |
| 1978 | 85.6 mm (3.4 in) |
| 1979 | 70.1 mm (2.8 in) |
| 1980 | 65.8 mm (2.6 in) |
| 1981 | 158.8 mm (6.3 in) |
| 1982 | 86.9 mm (3.4 in) |
| 1983 | 148.3 mm (5.8 in) |
| 1984 | 82.5 mm (3.2 in) |
| 1985 | 73.4 mm (2.9 in) |
| 1986 | 131.8 mm (5.2 in) |
| 1987 | 59.2 mm (2.3 in) |
| 1988 | 76.9 mm (3.0 in) |
| 1989 | 99.1 mm (3.9 in) |
| 1990 | 91.4 mm (3.6 in) |
| 1991 | 132.0 mm (5.2 in) |
| 1992 | 106.5 mm (4.2 in) |
| 1993 | 126.1 mm (5.0 in) |
| 1994 | 112.3 mm (4.4 in) |
| 1995 | 47.7 mm (1.9 in) |
| 1996 | 79.2 mm (3.1 in) |
| 1997 | 91.5 mm (3.6 in) |
| 1998 | 79.0 mm (3.1 in) |
| 1999 | 105.2 mm (4.1 in) |
| 2000 | 124.5 mm (4.9 in) |
| 2001 | 136.9 mm (5.4 in) |
| 2002 | 85.8 mm (3.4 in) |
| 2003 | 70.1 mm (2.8 in) |
| 2004 | 159.0 mm (6.3 in) |
| 2005 | 108.3 mm (4.3 in) |
| 2006 | 128.5 mm (5.1 in) |
| 2007 | 198.3 mm (7.8 in) |
| 2008 | 75.7 mm (3.0 in) |
| 2009 | 82.3 mm (3.2 in) |
| 2010 | 217.4 mm (8.6 in) |
| 2011 | 89.1 mm (3.5 in) |
| 2012 | 112.5 mm (4.4 in) |
| 2013 | 83.8 mm (3.3 in) |
| 2014 | 164.8 mm (6.5 in) |
| 2015 | 77.0 mm (3.0 in) |
| 2016 | 150.4 mm (5.9 in) |
| 2017 | 98.3 mm (3.9 in) |
| 2018 | 126.0 mm (5.0 in) |
| 2019 | 131.8 mm (5.2 in) |
| 2020 | 81.7 mm (3.2 in) |
| 2021 | 102.3 mm (4.0 in) |
| 2022 | 85.4 mm (3.4 in) |
| 2023 | 87.9 mm (3.5 in) |
| 2024 | 118.4 mm (4.7 in) |
| 2025 | 101.5 mm (4.0 in) |
| 2026 | 103.6 mm (4.1 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1961 | 16 days |
| 1962 | 50 days |
| 1963 | 25 days |
| 1964 | 38 days |
| 1965 | 22 days |
| 1966 | 26 days |
| 1967 | 38 days |
| 1968 | 25 days |
| 1969 | 26 days |
| 1970 | 20 days |
| 1971 | 13 days |
| 1972 | 25 days |
| 1973 | 17 days |
| 1974 | 23 days |
| 1975 | 18 days |
| 1976 | 26 days |
| 1977 | 18 days |
| 1978 | 33 days |
| 1979 | 17 days |
| 1980 | 30 days |
| 1981 | 25 days |
| 1982 | 33 days |
| 1983 | 19 days |
| 1984 | 17 days |
| 1985 | 13 days |
| 1986 | 23 days |
| 1987 | 30 days |
| 1988 | 27 days |
| 1989 | 18 days |
| 1990 | 24 days |
| 1991 | 33 days |
| 1992 | 23 days |
| 1993 | 18 days |
| 1994 | 33 days |
| 1995 | 41 days |
| 1996 | 38 days |
| 1997 | 20 days |
| 1998 | 22 days |
| 1999 | 21 days |
| 2000 | 21 days |
| 2001 | 20 days |
| 2002 | 36 days |
| 2003 | 23 days |
| 2004 | 25 days |
| 2005 | 16 days |
| 2006 | 21 days |
| 2007 | 30 days |
| 2008 | 23 days |
| 2009 | 26 days |
| 2010 | 29 days |
| 2011 | 34 days |
| 2012 | 24 days |
| 2013 | 21 days |
| 2014 | 18 days |
| 2015 | 18 days |
| 2016 | 19 days |
| 2017 | 17 days |
| 2018 | 24 days |
| 2019 | 21 days |
| 2020 | 38 days |
| 2021 | 20 days |
| 2022 | 19 days |
| 2023 | 26 days |
| 2024 | 35 days |
| 2025 | 39 days |
| 2026 | 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
59 years with a frostAcross 59 years with a frost, the median last spring frost at Owatonna falls on 5 May and the median first autumn frost on 3 October, which leaves a median of 152 days between them.
Fitted over all years, the growing season changes by +2.3 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1992 to 2023) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 5 May | n/a | 3 May | n/a | -1.2 days per decade |
| First autumn frost | 3 October | n/a | 4 October | n/a | +1.1 days per decade |
| Growing days | 152 days | n/a | 154 days | n/a | +2.3 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
64 years, 1962 to 2025A day with at least 63.6 mm (2.5 in) of rain is expected about once in 2 years. A day with at least 172.1 mm (6.8 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 63.6 mm (2.5 in) | |
| 5 years | 87.6 mm (3.4 in) | |
| 10 years | 105.4 mm (4.1 in) | |
| 25 years | 130.1 mm (5.1 in) | |
| 50 years | 150.3 mm (5.9 in) | |
| 100 years | 172.1 mm (6.8 in) | Longer than the 64 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, 64 years of values from 1962 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: 164.3 mm (6.5 in) in 2007; 161.0 mm (6.3 in) in 2010; 123.4 mm (4.9 in) in 1983.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Climate Twins
2009 to 2023 against 1961 to 1990Over 2009 to 2023, Owatonna had a mean temperature of 7.3 C (45.2 F) and 906.5 mm (35.7 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Winona (United States, 128 km away), Independence (United States, 207 km away) and Mason City Muni AP (United States, 105 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Winona | United States | 128 km (80 mi) | 7.3 C (45.1 F) | 853.9 mm (33.6 in) | 0.84 |
| Independence | United States | 207 km (129 mi) | 7.5 C (45.5 F) | 829.8 mm (32.7 in) | 0.98 |
| Mason City Muni AP | United States | 105 km (65 mi) | 7.3 C (45.1 F) | 831.9 mm (32.8 in) | 0.99 |
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 (2026-10-14).