Dayton 2SE Weather Records (USC00402360)
Record envelope, standing records and threshold days for Dayton 2SE (USC00402360), Tennessee, United States, with 71 years of record.
Key Facts for Dayton 2SE
- Dayton 2SE (USC00402360) is a weather station in Tennessee, United States at 35.47 latitude and -85.00 longitude, 251 m (822 ft) above sea level.
- The station reports from 1956 to 2026, 71 years of record.
- 1,464 records set at Dayton 2SE still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Dayton 2SE set a daily record high maximum temperature of 28.9 C (84.0 F) on 14 October 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: Tennessee, United States, 35.47 latitude, -85.00 longitude.
- Elevation: 251 m (822 ft).
- Period of record: 1956 to 2026, 71 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
8 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 23.9 C (75.0 F) | -26.1 C (-15.0 F) | 18.9 C (66.0 F) | -15.0 C (5.0 F) |
| Feb | 26.7 C (80.1 F) | -20.0 C (-4.0 F) | 22.8 C (73.0 F) | -10.0 C (14.0 F) |
| Mar | 29.4 C (84.9 F) | -16.1 C (3.0 F) | 29.4 C (84.9 F) | -4.4 C (24.1 F) |
| Apr | 33.3 C (91.9 F) | -5.6 C (21.9 F) | 29.4 C (84.9 F) | 1.7 C (35.1 F) |
| May | 34.4 C (93.9 F) | -1.1 C (30.0 F) | 30.6 C (87.1 F) | 3.9 C (39.0 F) |
| Jun | 39.4 C (102.9 F) | 4.4 C (39.9 F) | 33.9 C (93.0 F) | 11.1 C (52.0 F) |
| Jul | 41.7 C (107.1 F) | 9.4 C (48.9 F) | 36.7 C (98.1 F) | 17.2 C (63.0 F) |
| Aug | 40.0 C (104.0 F) | 9.4 C (48.9 F) | 35.6 C (96.1 F) | 15.6 C (60.1 F) |
| Sep | 37.8 C (100.0 F) | -1.1 C (30.0 F) | 36.7 C (98.1 F) | 9.4 C (48.9 F) |
| Oct | 36.1 C (97.0 F) | -5.0 C (23.0 F) | 30.6 C (87.1 F) | 11.1 C (52.0 F) |
| Nov | 28.9 C (84.0 F) | -12.8 C (9.0 F) | n/a | n/a |
| Dec | 24.4 C (75.9 F) | -20.6 C (-5.1 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1956 | 8 |
| 1957 | 29 |
| 1958 | 23 |
| 1959 | 20 |
| 1960 | 21 |
| 1961 | 21 |
| 1962 | 47 |
| 1963 | 41 |
| 1964 | 29 |
| 1965 | 24 |
| 1966 | 23 |
| 1967 | 47 |
| 1968 | 23 |
| 1969 | 18 |
| 1970 | 23 |
| 1971 | 14 |
| 1972 | 19 |
| 1973 | 17 |
| 1974 | 30 |
| 1975 | 12 |
| 1976 | 21 |
| 1977 | 29 |
| 1978 | 17 |
| 1979 | 20 |
| 1980 | 40 |
| 1981 | 17 |
| 1982 | 21 |
| 1983 | 23 |
| 1984 | 30 |
| 1985 | 27 |
| 1986 | 27 |
| 1987 | 12 |
| 1988 | 21 |
| 1989 | 30 |
| 1990 | 12 |
| 1991 | 20 |
| 1992 | 17 |
| 1993 | 19 |
| 1994 | 11 |
| 1995 | 14 |
| 1996 | 21 |
| 1997 | 3 |
| 1998 | 7 |
| 1999 | 16 |
| 2000 | 27 |
| 2001 | 12 |
| 2002 | 25 |
| 2003 | 9 |
| 2004 | 14 |
| 2005 | 13 |
| 2006 | 13 |
| 2007 | 20 |
| 2008 | 11 |
| 2009 | 14 |
| 2010 | 35 |
| 2011 | 25 |
| 2012 | 24 |
| 2013 | 22 |
| 2014 | 7 |
| 2015 | 13 |
| 2016 | 18 |
| 2017 | 25 |
| 2018 | 38 |
| 2019 | 29 |
| 2020 | 22 |
| 2021 | 10 |
| 2022 | 17 |
| 2023 | 12 |
| 2024 | 12 |
| 2025 | 19 |
| 2026 | 14 |
All-Time Record Progression
3 new records| Date | Kind | Detail |
|---|---|---|
| 2003-05-06 | Record daily precipitation | Record daily precipitation 183.1 mm (7.2 in) |
| 2004-09-17 | Record daily precipitation | Record daily precipitation 192.3 mm (7.6 in) |
| 2022-12-24 | Record low maximum temperature | Record low maximum temperature -12.8 C (9.0 F) |
Wettest Day of Each Month
Sep: 192.3 mm (7.6 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 78.7 mm (3.1 in) | 9 January 2024 |
| Feb | 120.7 mm (4.8 in) | 6 February 2020 |
| Mar | 150.9 mm (5.9 in) | 12 March 1963 |
| Apr | 132.1 mm (5.2 in) | 13 April 2020 |
| May | 183.1 mm (7.2 in) | 6 May 2003 |
| Jun | 94.7 mm (3.7 in) | 30 June 2014 |
| Jul | 130.6 mm (5.1 in) | 7 July 2013 |
| Aug | 112.3 mm (4.4 in) | 17 August 1982 |
| Sep | 192.3 mm (7.6 in) | 17 September 2004 |
| Oct | 106.9 mm (4.2 in) | 17 October 1975 |
| Nov | 95.2 mm (3.7 in) | 28 November 2011 |
| Dec | 150.9 mm (5.9 in) | 30 December 1969 |
Period of Record Coverage
1956 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1956 | 113 | 31% | No |
| 1957 | 360 | 99% | Yes |
| 1958 | 349 | 96% | Yes |
| 1959 | 340 | 93% | Yes |
| 1960 | 358 | 98% | Yes |
| 1961 | 297 | 81% | No |
| 1962 | 357 | 98% | Yes |
| 1963 | 365 | 100% | Yes |
| 1964 | 365 | 100% | Yes |
| 1965 | 365 | 100% | Yes |
| 1966 | 364 | 100% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 364 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 364 | 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 | 363 | 99% | Yes |
| 1983 | 365 | 100% | Yes |
| 1984 | 366 | 100% | Yes |
| 1985 | 365 | 100% | Yes |
| 1986 | 364 | 100% | Yes |
| 1987 | 361 | 99% | Yes |
| 1988 | 364 | 99% | Yes |
| 1989 | 364 | 100% | Yes |
| 1990 | 365 | 100% | Yes |
| 1991 | 363 | 99% | Yes |
| 1992 | 364 | 99% | Yes |
| 1993 | 360 | 99% | Yes |
| 1994 | 356 | 98% | Yes |
| 1995 | 350 | 96% | Yes |
| 1996 | 344 | 94% | Yes |
| 1997 | 27 | 7% | No |
| 1998 | 30 | 8% | No |
| 1999 | 358 | 98% | Yes |
| 2000 | 360 | 98% | Yes |
| 2001 | 365 | 100% | Yes |
| 2002 | 363 | 99% | Yes |
| 2003 | 361 | 99% | Yes |
| 2004 | 356 | 97% | Yes |
| 2005 | 360 | 99% | Yes |
| 2006 | 359 | 98% | Yes |
| 2007 | 359 | 98% | Yes |
| 2008 | 357 | 98% | Yes |
| 2009 | 356 | 98% | Yes |
| 2010 | 359 | 98% | Yes |
| 2011 | 361 | 99% | Yes |
| 2012 | 359 | 98% | Yes |
| 2013 | 354 | 97% | Yes |
| 2014 | 98 | 27% | No |
| 2015 | 196 | 54% | No |
| 2016 | 347 | 95% | Yes |
| 2017 | 362 | 99% | Yes |
| 2018 | 364 | 100% | Yes |
| 2019 | 360 | 99% | Yes |
| 2020 | 365 | 100% | Yes |
| 2021 | 363 | 99% | Yes |
| 2022 | 365 | 100% | Yes |
| 2023 | 365 | 100% | Yes |
| 2024 | 366 | 100% | Yes |
| 2025 | 365 | 100% | Yes |
| 2026 | 286 | 78% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 14 October 2026 | Dayton 2SE, US | daily high max (Provisional) | 28.9 C (84.0 F) | 0.6 C (1.1 F) | 51 years | 23 of 100 (Routine) |
| 4 October 2026 | Dayton 2SE, US | daily high min (Provisional) | 18.9 C (66.0 F) | 0.6 C (1.1 F) | 31 years | 17 of 100 (Routine) |
| 13 September 2026 | Dayton 2SE, US | daily high min (Tie, Provisional) | 20.6 C (69.1 F) | tie | 5 years | 2 of 100 (Routine) |
| 7 September 2026 | Dayton 2SE, US | daily high min (Provisional) | 21.7 C (71.1 F) | 1.7 C (3.1 F) | 67 years | 31 of 100 (Routine) |
| 5 September 2026 | Dayton 2SE, US | daily high max (Provisional) | 36.1 C (97.0 F) | 0.5 C (0.9 F) | 51 years | 23 of 100 (Routine) |
| 4 September 2026 | Dayton 2SE, US | daily high max (Provisional) | 36.7 C (98.1 F) | 0.6 C (1.1 F) | 15 years | 12 of 100 (Routine) |
| 4 September 2026 | Dayton 2SE, US | daily high min (Tie, Provisional) | 21.7 C (71.1 F) | tie | 5 years | 2 of 100 (Routine) |
| 15 August 2026 | Dayton 2SE, US | daily high min | 22.8 C (73.0 F) | 0.6 C (1.1 F) | 16 years | 13 of 100 (Routine) |
| 24 July 2026 | Dayton 2SE, US | daily low max | 25.0 C (77.0 F) | 1.1 C (2.0 F) | 40 years | 23 of 100 (Routine) |
| 4 July 2026 | Dayton 2SE, US | daily high max | 36.7 C (98.1 F) | 0.6 C (1.1 F) | 56 years | 26 of 100 (Routine) |
| 28 June 2026 | Dayton 2SE, US | daily high min (Tie) | 22.8 C (73.0 F) | tie | 16 years | 2 of 100 (Routine) |
| 30 May 2026 | Dayton 2SE, US | daily high min (Tie) | 20.6 C (69.1 F) | tie | 8 years | 2 of 100 (Routine) |
| 24 May 2026 | Dayton 2SE, US | daily high min (Tie) | 18.9 C (66.0 F) | tie | 25 years | 3 of 100 (Routine) |
| 22 May 2026 | Dayton 2SE, US | daily rain | 38.1 mm (1.5 in) | 2.0 mm (0.08 in) | 12 years | 11 of 100 (Routine) |
| 22 May 2026 | Dayton 2SE, US | daily high min (Tie) | 18.9 C (66.0 F) | tie | 8 years | 2 of 100 (Routine) |
| 23 March 2026 | Dayton 2SE, US | monthly high max (Tie) | 29.4 C (84.9 F) | tie | 62 years | 8 of 100 (Routine) |
| 22 March 2026 | Dayton 2SE, US | monthly high max (Tie) | 29.4 C (84.9 F) | tie | 62 years | 8 of 100 (Routine) |
| 18 March 2026 | Dayton 2SE, US | daily low max | 4.4 C (39.9 F) | 1.2 C (2.2 F) | 20 years | 15 of 100 (Routine) |
| 8 March 2026 | Dayton 2SE, US | daily high min | 13.3 C (55.9 F) | 1.1 C (2.0 F) | 45 years | 22 of 100 (Routine) |
| 7 March 2026 | Dayton 2SE, US | daily high max (Tie) | 27.2 C (81.0 F) | tie | 52 years | 5 of 100 (Routine) |
Climate Trend
61 complete years, 1957 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1957 | 15.9 C | +1.19 C |
| 1960 | 14.1 C | -0.68 C |
| 1962 | 14.4 C | -0.36 C |
| 1963 | 13.8 C | -0.95 C |
| 1964 | 14.5 C | -0.27 C |
| 1965 | 14.9 C | +0.11 C |
| 1966 | 14.1 C | -0.68 C |
| 1967 | 14.3 C | -0.48 C |
| 1968 | 14.2 C | -0.58 C |
| 1969 | 14.0 C | -0.78 C |
| 1970 | 14.7 C | -0.09 C |
| 1971 | 14.9 C | +0.18 C |
| 1972 | 14.7 C | -0.09 C |
| 1973 | 15.0 C | +0.24 C |
| 1974 | 15.0 C | +0.28 C |
| 1975 | 15.1 C | +0.32 C |
| 1976 | 13.8 C | -0.98 C |
| 1977 | 14.7 C | -0.06 C |
| 1978 | 14.3 C | -0.46 C |
| 1979 | 14.2 C | -0.60 C |
| 1980 | 15.0 C | +0.26 C |
| 1981 | 14.5 C | -0.28 C |
| 1982 | 15.0 C | +0.25 C |
| 1983 | 14.4 C | -0.39 C |
| 1984 | 14.7 C | -0.02 C |
| 1985 | 14.8 C | +0.04 C |
| 1986 | 15.7 C | +0.98 C |
| 1987 | 15.3 C | +0.53 C |
| 1988 | 14.2 C | -0.53 C |
| 1989 | 14.2 C | -0.58 C |
| 1990 | 15.6 C | +0.83 C |
| 1991 | 15.4 C | +0.66 C |
| 1992 | 14.1 C | -0.63 C |
| 1993 | 14.5 C | -0.22 C |
| 1994 | 14.5 C | -0.27 C |
| 1995 | 14.3 C | -0.45 C |
| 1996 | 13.6 C | -1.15 C |
| 1999 | 15.4 C | +0.66 C |
| 2000 | 14.9 C | +0.10 C |
| 2001 | 14.9 C | +0.14 C |
| 2002 | 15.2 C | +0.44 C |
| 2003 | 14.3 C | -0.47 C |
| 2004 | 14.9 C | +0.13 C |
| 2005 | 14.8 C | +0.03 C |
| 2006 | 14.9 C | +0.11 C |
| 2007 | 15.4 C | +0.64 C |
| 2008 | 14.7 C | -0.10 C |
| 2009 | 14.5 C | -0.27 C |
| 2010 | 14.7 C | -0.08 C |
| 2011 | 15.3 C | +0.54 C |
| 2012 | 15.7 C | +0.99 C |
| 2013 | 13.9 C | -0.86 C |
| 2017 | 15.5 C | +0.75 C |
| 2018 | 15.0 C | +0.29 C |
| 2019 | 15.7 C | +0.96 C |
| 2020 | 15.1 C | +0.37 C |
| 2021 | 14.7 C | -0.04 C |
| 2022 | 14.5 C | -0.22 C |
| 2023 | 15.2 C | +0.42 C |
| 2024 | 15.5 C | +0.78 C |
| 2025 | 14.9 C | +0.16 C |
The annual mean temperature here has risen by 0.09 C (0.02 to 0.16) per decade over 1957 to 2025. In Fahrenheit: 0.17 F (0.04 to 0.29) per decade. The slope is a straight line fitted to 61 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.09 C (0.02 to 0.16) per decade | 0.17 F (0.04 to 0.29) per decade | 1957 to 2025 | 61 | Rise |
| Mean daily maximum | -0.08 C (-0.16 to 0.01) per decade | -0.14 F (-0.29 to 0.01) per decade | 1957 to 2025 | 61 | Not clearly different from zero |
| Mean daily minimum | 0.3 C (0.2 to 0.3) per decade | 0.5 F (0.3 to 0.6) per decade | 1957 to 2025 | 61 | 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
1956 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 41.7 C (107.1 F) | 1980 | 35.6 C (96.1 F) | 71 |
| Coldest night (TNn) | -26.1 C (-15.0 F) | 1985 | -14.4 C (6.1 F) | 71 |
| Wettest day (Rx1day) | 192.3 mm (7.6 in) | 2004 | 80.8 mm (3.2 in) | 71 |
| Wettest five days (Rx5day) | 280.6 mm (11.0 in) | 2003 | 135.5 mm (5.3 in) | 71 |
| Longest dry spell (CDD) | 52 days | 2016 | 16 days | 71 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1956 | 34.4 C (93.9 F) |
| 1957 | 37.8 C (100.0 F) |
| 1958 | 35.6 C (96.1 F) |
| 1959 | 35.0 C (95.0 F) |
| 1960 | 35.6 C (96.1 F) |
| 1961 | 33.3 C (91.9 F) |
| 1962 | 35.6 C (96.1 F) |
| 1963 | 34.4 C (93.9 F) |
| 1964 | 36.1 C (97.0 F) |
| 1965 | 36.7 C (98.1 F) |
| 1966 | 38.3 C (100.9 F) |
| 1967 | 33.9 C (93.0 F) |
| 1968 | 38.9 C (102.0 F) |
| 1969 | 37.2 C (99.0 F) |
| 1970 | 36.1 C (97.0 F) |
| 1971 | 36.1 C (97.0 F) |
| 1972 | 35.6 C (96.1 F) |
| 1973 | 34.4 C (93.9 F) |
| 1974 | 34.4 C (93.9 F) |
| 1975 | 35.6 C (96.1 F) |
| 1976 | 35.0 C (95.0 F) |
| 1977 | 37.8 C (100.0 F) |
| 1978 | 36.7 C (98.1 F) |
| 1979 | 34.4 C (93.9 F) |
| 1980 | 41.7 C (107.1 F) |
| 1981 | 35.6 C (96.1 F) |
| 1982 | 34.4 C (93.9 F) |
| 1983 | 38.3 C (100.9 F) |
| 1984 | 35.6 C (96.1 F) |
| 1985 | 35.0 C (95.0 F) |
| 1986 | 38.3 C (100.9 F) |
| 1987 | 36.1 C (97.0 F) |
| 1988 | 37.8 C (100.0 F) |
| 1989 | 32.8 C (91.0 F) |
| 1990 | 36.7 C (98.1 F) |
| 1991 | 35.0 C (95.0 F) |
| 1992 | 32.8 C (91.0 F) |
| 1993 | 37.2 C (99.0 F) |
| 1994 | 31.7 C (89.1 F) |
| 1995 | 34.4 C (93.9 F) |
| 1996 | 33.3 C (91.9 F) |
| 1997 | 21.1 C (70.0 F) |
| 1998 | 23.9 C (75.0 F) |
| 1999 | 36.7 C (98.1 F) |
| 2000 | 37.8 C (100.0 F) |
| 2001 | 34.4 C (93.9 F) |
| 2002 | 36.1 C (97.0 F) |
| 2003 | 33.3 C (91.9 F) |
| 2004 | 33.9 C (93.0 F) |
| 2005 | 35.0 C (95.0 F) |
| 2006 | 37.2 C (99.0 F) |
| 2007 | 38.9 C (102.0 F) |
| 2008 | 36.7 C (98.1 F) |
| 2009 | 35.0 C (95.0 F) |
| 2010 | 36.7 C (98.1 F) |
| 2011 | 37.8 C (100.0 F) |
| 2012 | 40.0 C (104.0 F) |
| 2013 | 33.3 C (91.9 F) |
| 2014 | 32.2 C (90.0 F) |
| 2015 | 35.6 C (96.1 F) |
| 2016 | 36.1 C (97.0 F) |
| 2017 | 36.1 C (97.0 F) |
| 2018 | 33.3 C (91.9 F) |
| 2019 | 36.7 C (98.1 F) |
| 2020 | 35.6 C (96.1 F) |
| 2021 | 33.3 C (91.9 F) |
| 2022 | 35.0 C (95.0 F) |
| 2023 | 34.4 C (93.9 F) |
| 2024 | 36.7 C (98.1 F) |
| 2025 | 35.0 C (95.0 F) |
| 2026 | 36.7 C (98.1 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1956 | -7.2 C (19.0 F) |
| 1957 | -16.1 C (3.0 F) |
| 1958 | -18.3 C (-0.9 F) |
| 1959 | -16.7 C (1.9 F) |
| 1960 | -15.0 C (5.0 F) |
| 1961 | -14.4 C (6.1 F) |
| 1962 | -20.6 C (-5.1 F) |
| 1963 | -22.8 C (-9.0 F) |
| 1964 | -14.4 C (6.1 F) |
| 1965 | -16.1 C (3.0 F) |
| 1966 | -22.8 C (-9.0 F) |
| 1967 | -16.7 C (1.9 F) |
| 1968 | -13.3 C (8.1 F) |
| 1969 | -16.7 C (1.9 F) |
| 1970 | -20.0 C (-4.0 F) |
| 1971 | -16.1 C (3.0 F) |
| 1972 | -18.3 C (-0.9 F) |
| 1973 | -12.8 C (9.0 F) |
| 1974 | -11.1 C (12.0 F) |
| 1975 | -13.9 C (7.0 F) |
| 1976 | -16.7 C (1.9 F) |
| 1977 | -21.7 C (-7.1 F) |
| 1978 | -14.4 C (6.1 F) |
| 1979 | -15.6 C (3.9 F) |
| 1980 | -16.1 C (3.0 F) |
| 1981 | -15.6 C (3.9 F) |
| 1982 | -22.2 C (-8.0 F) |
| 1983 | -20.6 C (-5.1 F) |
| 1984 | -16.7 C (1.9 F) |
| 1985 | -26.1 C (-15.0 F) |
| 1986 | -18.3 C (-0.9 F) |
| 1987 | -12.2 C (10.0 F) |
| 1988 | -14.4 C (6.1 F) |
| 1989 | -18.3 C (-0.9 F) |
| 1990 | -10.6 C (12.9 F) |
| 1991 | -14.4 C (6.1 F) |
| 1992 | -13.3 C (8.1 F) |
| 1993 | -13.9 C (7.0 F) |
| 1994 | -19.4 C (-2.9 F) |
| 1995 | -15.6 C (3.9 F) |
| 1996 | -20.0 C (-4.0 F) |
| 1997 | -14.4 C (6.1 F) |
| 1998 | -4.4 C (24.1 F) |
| 1999 | -10.6 C (12.9 F) |
| 2000 | -11.1 C (12.0 F) |
| 2001 | -10.6 C (12.9 F) |
| 2002 | -10.6 C (12.9 F) |
| 2003 | -15.6 C (3.9 F) |
| 2004 | -11.7 C (10.9 F) |
| 2005 | -11.1 C (12.0 F) |
| 2006 | -12.2 C (10.0 F) |
| 2007 | -12.2 C (10.0 F) |
| 2008 | -12.2 C (10.0 F) |
| 2009 | -14.4 C (6.1 F) |
| 2010 | -12.2 C (10.0 F) |
| 2011 | -12.2 C (10.0 F) |
| 2012 | -8.3 C (17.1 F) |
| 2013 | -7.2 C (19.0 F) |
| 2014 | -17.8 C (0.0 F) |
| 2015 | -5.0 C (23.0 F) |
| 2016 | -12.2 C (10.0 F) |
| 2017 | -12.8 C (9.0 F) |
| 2018 | -15.6 C (3.9 F) |
| 2019 | -10.0 C (14.0 F) |
| 2020 | -11.1 C (12.0 F) |
| 2021 | -8.9 C (16.0 F) |
| 2022 | -16.7 C (1.9 F) |
| 2023 | -7.2 C (19.0 F) |
| 2024 | -17.2 C (1.0 F) |
| 2025 | -15.0 C (5.0 F) |
| 2026 | -15.0 C (5.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1956 | 65.5 mm (2.6 in) |
| 1957 | 69.9 mm (2.8 in) |
| 1958 | 88.1 mm (3.5 in) |
| 1959 | 71.4 mm (2.8 in) |
| 1960 | 56.4 mm (2.2 in) |
| 1961 | 73.9 mm (2.9 in) |
| 1962 | 78.5 mm (3.1 in) |
| 1963 | 150.9 mm (5.9 in) |
| 1964 | 65.8 mm (2.6 in) |
| 1965 | 70.4 mm (2.8 in) |
| 1966 | 50.8 mm (2.0 in) |
| 1967 | 82.0 mm (3.2 in) |
| 1968 | 44.7 mm (1.8 in) |
| 1969 | 150.9 mm (5.9 in) |
| 1970 | 79.0 mm (3.1 in) |
| 1971 | 83.3 mm (3.3 in) |
| 1972 | 65.5 mm (2.6 in) |
| 1973 | 138.4 mm (5.4 in) |
| 1974 | 58.7 mm (2.3 in) |
| 1975 | 106.9 mm (4.2 in) |
| 1976 | 54.1 mm (2.1 in) |
| 1977 | 137.2 mm (5.4 in) |
| 1978 | 76.2 mm (3.0 in) |
| 1979 | 71.6 mm (2.8 in) |
| 1980 | 72.4 mm (2.9 in) |
| 1981 | 43.2 mm (1.7 in) |
| 1982 | 112.3 mm (4.4 in) |
| 1983 | 98.0 mm (3.9 in) |
| 1984 | 50.3 mm (2.0 in) |
| 1985 | 87.9 mm (3.5 in) |
| 1986 | 103.9 mm (4.1 in) |
| 1987 | 50.8 mm (2.0 in) |
| 1988 | 59.9 mm (2.4 in) |
| 1989 | 80.8 mm (3.2 in) |
| 1990 | 94.7 mm (3.7 in) |
| 1991 | 110.0 mm (4.3 in) |
| 1992 | 78.5 mm (3.1 in) |
| 1993 | 83.1 mm (3.3 in) |
| 1994 | 95.3 mm (3.8 in) |
| 1995 | 82.6 mm (3.3 in) |
| 1996 | 76.2 mm (3.0 in) |
| 1997 | 42.2 mm (1.7 in) |
| 1998 | 43.4 mm (1.7 in) |
| 1999 | 91.4 mm (3.6 in) |
| 2000 | 90.2 mm (3.6 in) |
| 2001 | 70.6 mm (2.8 in) |
| 2002 | 89.2 mm (3.5 in) |
| 2003 | 183.1 mm (7.2 in) |
| 2004 | 192.3 mm (7.6 in) |
| 2005 | 60.7 mm (2.4 in) |
| 2006 | 65.8 mm (2.6 in) |
| 2007 | 56.1 mm (2.2 in) |
| 2008 | 90.9 mm (3.6 in) |
| 2009 | 92.5 mm (3.6 in) |
| 2010 | 82.3 mm (3.2 in) |
| 2011 | 148.1 mm (5.8 in) |
| 2012 | 144.0 mm (5.7 in) |
| 2013 | 130.6 mm (5.1 in) |
| 2014 | 94.7 mm (3.7 in) |
| 2015 | 95.0 mm (3.7 in) |
| 2016 | 84.8 mm (3.3 in) |
| 2017 | 86.4 mm (3.4 in) |
| 2018 | 111.5 mm (4.4 in) |
| 2019 | 74.9 mm (2.9 in) |
| 2020 | 132.1 mm (5.2 in) |
| 2021 | 71.1 mm (2.8 in) |
| 2022 | 92.7 mm (3.6 in) |
| 2023 | 63.0 mm (2.5 in) |
| 2024 | 78.7 mm (3.1 in) |
| 2025 | 78.7 mm (3.1 in) |
| 2026 | 76.2 mm (3.0 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1956 | 140.1 mm (5.5 in) |
| 1957 | 194.0 mm (7.6 in) |
| 1958 | 134.6 mm (5.3 in) |
| 1959 | 87.6 mm (3.4 in) |
| 1960 | 78.0 mm (3.1 in) |
| 1961 | 140.2 mm (5.5 in) |
| 1962 | 147.1 mm (5.8 in) |
| 1963 | 190.5 mm (7.5 in) |
| 1964 | 99.6 mm (3.9 in) |
| 1965 | 152.5 mm (6.0 in) |
| 1966 | 99.3 mm (3.9 in) |
| 1967 | 176.5 mm (6.9 in) |
| 1968 | 88.7 mm (3.5 in) |
| 1969 | 161.5 mm (6.4 in) |
| 1970 | 159.8 mm (6.3 in) |
| 1971 | 128.1 mm (5.0 in) |
| 1972 | 126.2 mm (5.0 in) |
| 1973 | 176.0 mm (6.9 in) |
| 1974 | 124.6 mm (4.9 in) |
| 1975 | 145.1 mm (5.7 in) |
| 1976 | 106.3 mm (4.2 in) |
| 1977 | 213.2 mm (8.4 in) |
| 1978 | 174.8 mm (6.9 in) |
| 1979 | 123.2 mm (4.9 in) |
| 1980 | 156.5 mm (6.2 in) |
| 1981 | 80.8 mm (3.2 in) |
| 1982 | 144.3 mm (5.7 in) |
| 1983 | 153.1 mm (6.0 in) |
| 1984 | 143.6 mm (5.7 in) |
| 1985 | 88.4 mm (3.5 in) |
| 1986 | 108.0 mm (4.3 in) |
| 1987 | 83.8 mm (3.3 in) |
| 1988 | 103.7 mm (4.1 in) |
| 1989 | 153.0 mm (6.0 in) |
| 1990 | 190.4 mm (7.5 in) |
| 1991 | 221.7 mm (8.7 in) |
| 1992 | 176.8 mm (7.0 in) |
| 1993 | 106.5 mm (4.2 in) |
| 1994 | 182.7 mm (7.2 in) |
| 1995 | 116.9 mm (4.6 in) |
| 1996 | 117.3 mm (4.6 in) |
| 1997 | 74.4 mm (2.9 in) |
| 1998 | 87.3 mm (3.4 in) |
| 1999 | 123.2 mm (4.9 in) |
| 2000 | 133.7 mm (5.3 in) |
| 2001 | 88.1 mm (3.5 in) |
| 2002 | 135.5 mm (5.3 in) |
| 2003 | 280.6 mm (11.0 in) |
| 2004 | 194.3 mm (7.6 in) |
| 2005 | 100.6 mm (4.0 in) |
| 2006 | 78.8 mm (3.1 in) |
| 2007 | 91.7 mm (3.6 in) |
| 2008 | 160.8 mm (6.3 in) |
| 2009 | 128.5 mm (5.1 in) |
| 2010 | 133.9 mm (5.3 in) |
| 2011 | 190.1 mm (7.5 in) |
| 2012 | 152.7 mm (6.0 in) |
| 2013 | 193.4 mm (7.6 in) |
| 2014 | 125.8 mm (5.0 in) |
| 2015 | 208.8 mm (8.2 in) |
| 2016 | 139.1 mm (5.5 in) |
| 2017 | 140.5 mm (5.5 in) |
| 2018 | 274.5 mm (10.8 in) |
| 2019 | 180.4 mm (7.1 in) |
| 2020 | 164.3 mm (6.5 in) |
| 2021 | 123.2 mm (4.9 in) |
| 2022 | 139.1 mm (5.5 in) |
| 2023 | 93.5 mm (3.7 in) |
| 2024 | 125.2 mm (4.9 in) |
| 2025 | 116.6 mm (4.6 in) |
| 2026 | 92.0 mm (3.6 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1956 | 20 days |
| 1957 | 15 days |
| 1958 | 27 days |
| 1959 | 26 days |
| 1960 | 18 days |
| 1961 | 15 days |
| 1962 | 16 days |
| 1963 | 32 days |
| 1964 | 25 days |
| 1965 | 19 days |
| 1966 | 17 days |
| 1967 | 17 days |
| 1968 | 16 days |
| 1969 | 16 days |
| 1970 | 13 days |
| 1971 | 15 days |
| 1972 | 20 days |
| 1973 | 15 days |
| 1974 | 19 days |
| 1975 | 11 days |
| 1976 | 14 days |
| 1977 | 15 days |
| 1978 | 22 days |
| 1979 | 14 days |
| 1980 | 21 days |
| 1981 | 16 days |
| 1982 | 13 days |
| 1983 | 13 days |
| 1984 | 22 days |
| 1985 | 12 days |
| 1986 | 18 days |
| 1987 | 20 days |
| 1988 | 24 days |
| 1989 | 14 days |
| 1990 | 14 days |
| 1991 | 23 days |
| 1992 | 20 days |
| 1993 | 17 days |
| 1994 | 15 days |
| 1995 | 14 days |
| 1996 | 18 days |
| 1997 | 5 days |
| 1998 | 7 days |
| 1999 | 29 days |
| 2000 | 18 days |
| 2001 | 29 days |
| 2002 | 14 days |
| 2003 | 15 days |
| 2004 | 21 days |
| 2005 | 26 days |
| 2006 | 18 days |
| 2007 | 31 days |
| 2008 | 23 days |
| 2009 | 15 days |
| 2010 | 16 days |
| 2011 | 14 days |
| 2012 | 16 days |
| 2013 | 17 days |
| 2014 | 14 days |
| 2015 | 13 days |
| 2016 | 52 days |
| 2017 | 15 days |
| 2018 | 12 days |
| 2019 | 40 days |
| 2020 | 10 days |
| 2021 | 12 days |
| 2022 | 16 days |
| 2023 | 20 days |
| 2024 | 28 days |
| 2025 | 16 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
61 years with a frostAcross 61 years with a frost, the median last spring frost at Dayton 2SE falls on 9 April and the median first autumn frost on 28 October, which leaves a median of 202 days between them.
In 1991 to 2025 the median growing season was 210 days. That is 17 days more than in 1957 to 1989.
Fitted over all years, the growing season changes by +4.3 days per decade at this station.
| Measure | Median, all years | Earliest period (1957 to 1989) | Recent period (1991 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 9 April | 11 April | 3 April | 8 days earlier | -2.1 days per decade |
| First autumn frost | 28 October | 23 October | 30 October | 7 days later | +2.1 days per decade |
| Growing days | 202 days | 193 days | 210 days | 17 days more | +4.3 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
65 years, 1957 to 2025A day with at least 81.9 mm (3.2 in) of rain is expected about once in 2 years. A day with at least 205.0 mm (8.1 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 81.9 mm (3.2 in) | |
| 5 years | 109.2 mm (4.3 in) | |
| 10 years | 129.3 mm (5.1 in) | |
| 25 years | 157.4 mm (6.2 in) | |
| 50 years | 180.3 mm (7.1 in) | |
| 100 years | 205.0 mm (8.1 in) | Longer than the 65 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, 65 years of values from 1957 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: 192.3 mm (7.6 in) in 2004; 183.1 mm (7.2 in) in 2003; 150.9 mm (5.9 in) in 1963.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Dayton 2SE, at 2011. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 2011 ran 0.3 C (0.5 F) lower than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 2011 | -0.3 | -0.5 | 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
2008 to 2025 against 1961 to 1990Over 2008 to 2025, Dayton 2SE had a mean temperature of 15.0 C (59.0 F) and 1,516.1 mm (59.7 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Scottsboro (United States, 131 km away), Hamilton (United States, 311 km away) and Ashwood (United States, 194 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Scottsboro | United States | 131 km (81 mi) | 15.0 C (59.1 F) | 1,573.7 mm (62.0 in) | 0.37 |
| Hamilton | United States | 311 km (193 mi) | 14.9 C (58.8 F) | 1,507.2 mm (59.3 in) | 0.48 |
| Ashwood | United States | 194 km (121 mi) | 14.8 C (58.6 F) | 1,499.4 mm (59.0 in) | 0.51 |
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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-16).