Butler 2 SW Weather Records (USC00361139)
Record envelope, standing records and threshold days for Butler 2 SW (USC00361139), Pennsylvania, United States, with 54 years of record.
Key Facts for Butler 2 SW
- Butler 2 SW (USC00361139) is a weather station in Pennsylvania, United States at 40.84 latitude and -79.92 longitude, 305 m (1,000 ft) above sea level.
- The station reports from 1967 to 2020, 54 years of record.
- 1,464 records set at Butler 2 SW still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Butler 2 SW set a daily record high maximum temperature of 33.9 C (93.0 F) on 10 July 2020.
About the Station
- Location: Pennsylvania, United States, 40.84 latitude, -79.92 longitude.
- Elevation: 305 m (1,000 ft).
- Period of record: 1967 to 2020, 54 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
0 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 20.6 C (69.1 F) | -28.9 C (-20.0 F) | n/a | n/a |
| Feb | 23.9 C (75.0 F) | -28.3 C (-18.9 F) | n/a | n/a |
| Mar | 28.9 C (84.0 F) | -23.3 C (-9.9 F) | n/a | n/a |
| Apr | 32.2 C (90.0 F) | -12.8 C (9.0 F) | n/a | n/a |
| May | 32.8 C (91.0 F) | -5.6 C (21.9 F) | n/a | n/a |
| Jun | 36.1 C (97.0 F) | -0.6 C (30.9 F) | n/a | n/a |
| Jul | 38.9 C (102.0 F) | 1.1 C (34.0 F) | n/a | n/a |
| Aug | 37.8 C (100.0 F) | 0.0 C (32.0 F) | n/a | n/a |
| Sep | 34.4 C (93.9 F) | -2.2 C (28.0 F) | n/a | n/a |
| Oct | 31.1 C (88.0 F) | -8.3 C (17.1 F) | n/a | n/a |
| Nov | 26.1 C (79.0 F) | -17.8 C (0.0 F) | n/a | n/a |
| Dec | 23.3 C (73.9 F) | -25.6 C (-14.1 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1967 | 7 |
| 1968 | 41 |
| 1969 | 30 |
| 1970 | 24 |
| 1971 | 42 |
| 1972 | 30 |
| 1973 | 35 |
| 1974 | 28 |
| 1975 | 28 |
| 1976 | 57 |
| 1977 | 45 |
| 1978 | 35 |
| 1979 | 48 |
| 1980 | 20 |
| 1981 | 17 |
| 1982 | 39 |
| 1983 | 26 |
| 1984 | 33 |
| 1985 | 24 |
| 1986 | 34 |
| 1987 | 21 |
| 1988 | 53 |
| 1989 | 44 |
| 1990 | 29 |
| 1991 | 35 |
| 1992 | 12 |
| 1993 | 26 |
| 1994 | 21 |
| 1995 | 18 |
| 1996 | 25 |
| 1997 | 25 |
| 1998 | 24 |
| 1999 | 16 |
| 2000 | 23 |
| 2001 | 24 |
| 2002 | 40 |
| 2003 | 11 |
| 2004 | 21 |
| 2005 | 23 |
| 2006 | 24 |
| 2007 | 22 |
| 2008 | 19 |
| 2009 | 18 |
| 2010 | 15 |
| 2011 | 16 |
| 2012 | 35 |
| 2013 | 21 |
| 2014 | 26 |
| 2015 | 34 |
| 2016 | 25 |
| 2017 | 28 |
| 2018 | 26 |
| 2019 | 11 |
| 2020 | 10 |
All-Time Record Progression
3 new records| Date | Kind | Detail |
|---|---|---|
| 2004-09-09 | Record daily precipitation | Record daily precipitation 99.1 mm (3.9 in) |
| 2004-09-18 | Record daily precipitation | Record daily precipitation 119.9 mm (4.7 in) |
| 2010-02-06 | Record daily snowfall | Record daily snowfall 43.4 cm (17.1 in) |
Wettest Day of Each Month
Sep: 119.9 mm (4.7 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 62.2 mm (2.4 in) | 12 January 2018 |
| Feb | 51.8 mm (2.0 in) | 24 February 1975 |
| Mar | 50.3 mm (2.0 in) | 29 March 1985 |
| Apr | 53.3 mm (2.1 in) | 11 April 2013 |
| May | 84.3 mm (3.3 in) | 28 May 1985 |
| Jun | 61.0 mm (2.4 in) | 15 June 2015 |
| Jul | 74.7 mm (2.9 in) | 9 July 1985 |
| Aug | 100.3 mm (3.9 in) | 21 August 2007 |
| Sep | 119.9 mm (4.7 in) | 18 September 2004 |
| Oct | 69.3 mm (2.7 in) | 4 October 1986 |
| Nov | 55.4 mm (2.2 in) | 6 November 2017 |
| Dec | 80.0 mm (3.1 in) | 1 December 2010 |
Period of Record Coverage
1967 to 2020| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1967 | 87 | 24% | No |
| 1968 | 363 | 99% | Yes |
| 1969 | 359 | 98% | Yes |
| 1970 | 364 | 100% | Yes |
| 1971 | 364 | 100% | Yes |
| 1972 | 363 | 99% | Yes |
| 1973 | 364 | 100% | Yes |
| 1974 | 363 | 99% | Yes |
| 1975 | 363 | 99% | Yes |
| 1976 | 365 | 100% | Yes |
| 1977 | 364 | 100% | Yes |
| 1978 | 365 | 100% | Yes |
| 1979 | 363 | 99% | Yes |
| 1980 | 364 | 99% | Yes |
| 1981 | 364 | 100% | Yes |
| 1982 | 362 | 99% | Yes |
| 1983 | 365 | 100% | Yes |
| 1984 | 365 | 100% | Yes |
| 1985 | 364 | 100% | Yes |
| 1986 | 364 | 100% | Yes |
| 1987 | 365 | 100% | Yes |
| 1988 | 366 | 100% | Yes |
| 1989 | 364 | 100% | Yes |
| 1990 | 330 | 90% | Yes |
| 1991 | 359 | 98% | Yes |
| 1992 | 364 | 99% | Yes |
| 1993 | 363 | 99% | Yes |
| 1994 | 365 | 100% | Yes |
| 1995 | 362 | 99% | Yes |
| 1996 | 365 | 100% | Yes |
| 1997 | 365 | 100% | Yes |
| 1998 | 365 | 100% | Yes |
| 1999 | 365 | 100% | Yes |
| 2000 | 366 | 100% | Yes |
| 2001 | 365 | 100% | Yes |
| 2002 | 364 | 100% | Yes |
| 2003 | 364 | 100% | Yes |
| 2004 | 366 | 100% | Yes |
| 2005 | 365 | 100% | Yes |
| 2006 | 365 | 100% | Yes |
| 2007 | 365 | 100% | Yes |
| 2008 | 317 | 87% | No |
| 2009 | 321 | 88% | No |
| 2010 | 347 | 95% | Yes |
| 2011 | 337 | 92% | Yes |
| 2012 | 325 | 89% | No |
| 2013 | 332 | 91% | Yes |
| 2014 | 326 | 89% | No |
| 2015 | 339 | 93% | Yes |
| 2016 | 354 | 97% | Yes |
| 2017 | 358 | 98% | Yes |
| 2018 | 357 | 98% | Yes |
| 2019 | 365 | 100% | Yes |
| 2020 | 194 | 53% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 10 July 2020 | Butler 2 SW, US | daily high max | 33.9 C (93.0 F) | 0.6 C (1.1 F) | 39 years | 17 of 100 (Routine) |
| 10 June 2020 | Butler 2 SW, US | daily high max (Tie) | 32.8 C (91.0 F) | tie | 21 years | 2 of 100 (Routine) |
| 4 June 2020 | Butler 2 SW, US | daily high max (Tie) | 28.9 C (84.0 F) | tie | 29 years | 3 of 100 (Routine) |
| 27 May 2020 | Butler 2 SW, US | daily high max | 32.2 C (90.0 F) | 1.6 C (2.9 F) | 8 years | 9 of 100 (Routine) |
| 26 May 2020 | Butler 2 SW, US | daily high max | 31.1 C (88.0 F) | 0.5 C (0.9 F) | 8 years | 7 of 100 (Routine) |
| 13 May 2020 | Butler 2 SW, US | daily low min (Tie) | -1.7 C (28.9 F) | tie | 44 years | 4 of 100 (Routine) |
| 12 May 2020 | Butler 2 SW, US | monthly low max (Tie) | 5.0 C (41.0 F) | tie | 47 years | 7 of 100 (Routine) |
| 10 May 2020 | Butler 2 SW, US | monthly low max (Tie) | 5.0 C (41.0 F) | tie | 47 years | 7 of 100 (Routine) |
| 9 May 2020 | Butler 2 SW, US | daily low max | 8.9 C (48.0 F) | 1.7 C (3.1 F) | 40 years | 20 of 100 (Routine) |
| 9 May 2020 | Butler 2 SW, US | daily low min (Tie) | -2.2 C (28.0 F) | tie | 44 years | 4 of 100 (Routine) |
| 30 April 2020 | Butler 2 SW, US | daily rain | 32.8 mm (1.3 in) | 7.4 mm (0.29 in) | 37 years | 25 of 100 (Routine) |
| 18 April 2020 | Butler 2 SW, US | daily low min (Tie) | -3.3 C (26.1 F) | tie | 46 years | 4 of 100 (Routine) |
| 16 April 2020 | Butler 2 SW, US | daily snowfall | 0.8 cm (0.3 in) | 0.3 cm (0.1 in) | 6 years | 7 of 100 (Routine) |
| 10 April 2020 | Butler 2 SW, US | daily snow depth (Tie) | 2.5 cm (1.0 in) | tie | 24 years | 3 of 100 (Routine) |
| 30 March 2020 | Butler 2 SW, US | daily high min (Tie) | 10.6 C (51.1 F) | tie | 31 years | 3 of 100 (Routine) |
| 20 March 2020 | Butler 2 SW, US | daily high min | 8.3 C (46.9 F) | 0.5 C (0.9 F) | 8 years | 7 of 100 (Routine) |
| 19 March 2020 | Butler 2 SW, US | daily rain | 31.8 mm (1.3 in) | 7.7 mm (0.30 in) | 37 years | 26 of 100 (Routine) |
| 10 February 2020 | Butler 2 SW, US | daily rain (Tie) | 11.9 mm (0.5 in) | tie | 29 years | 3 of 100 (Routine) |
| 4 February 2020 | Butler 2 SW, US | daily high max | 16.7 C (62.1 F) | 0.6 C (1.1 F) | 4 years | 6 of 100 (Routine) |
| 12 January 2020 | Butler 2 SW, US | daily high min | 5.0 C (41.0 F) | 1.7 C (3.1 F) | 6 years | 9 of 100 (Routine) |
Climate Trend
51 complete years, 1968 to 2019| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1968 | 8.7 C | -0.72 C |
| 1969 | 8.8 C | -0.64 C |
| 1970 | 9.4 C | +0.00 C |
| 1971 | 9.1 C | -0.31 C |
| 1972 | 8.7 C | -0.72 C |
| 1973 | 10.0 C | +0.57 C |
| 1974 | 9.0 C | -0.45 C |
| 1975 | 9.5 C | +0.13 C |
| 1976 | 8.2 C | -1.18 C |
| 1977 | 8.7 C | -0.72 C |
| 1978 | 7.9 C | -1.55 C |
| 1979 | 9.0 C | -0.40 C |
| 1980 | 8.8 C | -0.58 C |
| 1981 | 9.3 C | -0.14 C |
| 1982 | 9.6 C | +0.15 C |
| 1983 | 9.7 C | +0.31 C |
| 1984 | 9.2 C | -0.24 C |
| 1985 | 9.3 C | -0.10 C |
| 1986 | 10.0 C | +0.55 C |
| 1987 | 10.2 C | +0.75 C |
| 1988 | 9.3 C | -0.10 C |
| 1989 | 8.8 C | -0.63 C |
| 1991 | 10.6 C | +1.21 C |
| 1992 | 8.7 C | -0.75 C |
| 1993 | 9.1 C | -0.32 C |
| 1994 | 9.0 C | -0.39 C |
| 1995 | 9.2 C | -0.25 C |
| 1996 | 8.9 C | -0.51 C |
| 1997 | 8.8 C | -0.61 C |
| 1998 | 11.0 C | +1.61 C |
| 1999 | 10.1 C | +0.65 C |
| 2000 | 9.4 C | -0.04 C |
| 2001 | 10.1 C | +0.69 C |
| 2002 | 10.2 C | +0.77 C |
| 2003 | 9.0 C | -0.45 C |
| 2004 | 9.5 C | +0.08 C |
| 2005 | 9.9 C | +0.47 C |
| 2006 | 10.4 C | +0.96 C |
| 2007 | 9.7 C | +0.31 C |
| 2008 | 9.0 C | -0.37 C |
| 2009 | 8.9 C | -0.48 C |
| 2010 | 9.7 C | +0.33 C |
| 2011 | 10.6 C | +1.16 C |
| 2012 | 11.0 C | +1.63 C |
| 2013 | 9.3 C | -0.09 C |
| 2014 | 8.3 C | -1.10 C |
| 2015 | 9.4 C | -0.03 C |
| 2016 | 10.1 C | +0.69 C |
| 2017 | 10.0 C | +0.58 C |
| 2018 | 9.4 C | -0.01 C |
| 2019 | 9.6 C | +0.15 C |
The annual mean temperature here has risen by 0.2 C (0.1 to 0.3) per decade over 1968 to 2019. In Fahrenheit: 0.3 F (0.1 to 0.5) per decade. The slope is a straight line fitted to 51 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.2 C (0.1 to 0.3) per decade | 0.3 F (0.1 to 0.5) per decade | 1968 to 2019 | 51 | Rise |
| Mean daily maximum | -0.02 C (-0.15 to 0.12) per decade | -0.03 F (-0.27 to 0.21) per decade | 1968 to 2019 | 51 | Not clearly different from zero |
| Mean daily minimum | 0.4 C (0.2 to 0.5) per decade | 0.7 F (0.4 to 0.9) per decade | 1968 to 2019 | 51 | 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
1967 to 2020| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 38.9 C (102.0 F) | 1988 | 33.6 C (92.5 F) | 54 |
| Coldest night (TNn) | -28.9 C (-20.0 F) | 1977 | -21.9 C (-7.5 F) | 54 |
| Wettest day (Rx1day) | 119.9 mm (4.7 in) | 2004 | 53.3 mm (2.1 in) | 54 |
| Wettest five days (Rx5day) | 165.1 mm (6.5 in) | 2018 | 79.2 mm (3.1 in) | 54 |
| Longest dry spell (CDD) | 27 days | 1983 | 14 days | 54 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1967 | 28.3 C (82.9 F) |
| 1968 | 35.0 C (95.0 F) |
| 1969 | 34.4 C (93.9 F) |
| 1970 | 32.2 C (90.0 F) |
| 1971 | 34.4 C (93.9 F) |
| 1972 | 33.3 C (91.9 F) |
| 1973 | 34.4 C (93.9 F) |
| 1974 | 32.8 C (91.0 F) |
| 1975 | 33.9 C (93.0 F) |
| 1976 | 32.2 C (90.0 F) |
| 1977 | 34.4 C (93.9 F) |
| 1978 | 33.9 C (93.0 F) |
| 1979 | 33.9 C (93.0 F) |
| 1980 | 35.0 C (95.0 F) |
| 1981 | 33.3 C (91.9 F) |
| 1982 | 33.3 C (91.9 F) |
| 1983 | 33.9 C (93.0 F) |
| 1984 | 32.8 C (91.0 F) |
| 1985 | 34.4 C (93.9 F) |
| 1986 | 33.9 C (93.0 F) |
| 1987 | 34.4 C (93.9 F) |
| 1988 | 38.9 C (102.0 F) |
| 1989 | 33.9 C (93.0 F) |
| 1990 | 32.8 C (91.0 F) |
| 1991 | 35.0 C (95.0 F) |
| 1992 | 30.0 C (86.0 F) |
| 1993 | 33.3 C (91.9 F) |
| 1994 | 35.6 C (96.1 F) |
| 1995 | 34.4 C (93.9 F) |
| 1996 | 31.7 C (89.1 F) |
| 1997 | 33.3 C (91.9 F) |
| 1998 | 32.8 C (91.0 F) |
| 1999 | 35.6 C (96.1 F) |
| 2000 | 32.2 C (90.0 F) |
| 2001 | 35.0 C (95.0 F) |
| 2002 | 35.0 C (95.0 F) |
| 2003 | 31.7 C (89.1 F) |
| 2004 | 30.6 C (87.1 F) |
| 2005 | 34.4 C (93.9 F) |
| 2006 | 33.3 C (91.9 F) |
| 2007 | 33.3 C (91.9 F) |
| 2008 | 32.2 C (90.0 F) |
| 2009 | 31.7 C (89.1 F) |
| 2010 | 33.9 C (93.0 F) |
| 2011 | 37.2 C (99.0 F) |
| 2012 | 36.1 C (97.0 F) |
| 2013 | 32.8 C (91.0 F) |
| 2014 | 31.1 C (88.0 F) |
| 2015 | 31.7 C (89.1 F) |
| 2016 | 33.9 C (93.0 F) |
| 2017 | 31.7 C (89.1 F) |
| 2018 | 33.3 C (91.9 F) |
| 2019 | 32.8 C (91.0 F) |
| 2020 | 34.4 C (93.9 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1967 | -13.3 C (8.1 F) |
| 1968 | -23.3 C (-9.9 F) |
| 1969 | -21.1 C (-6.0 F) |
| 1970 | -23.9 C (-11.0 F) |
| 1971 | -23.9 C (-11.0 F) |
| 1972 | -23.9 C (-11.0 F) |
| 1973 | -22.2 C (-8.0 F) |
| 1974 | -16.1 C (3.0 F) |
| 1975 | -25.0 C (-13.0 F) |
| 1976 | -24.4 C (-11.9 F) |
| 1977 | -28.9 C (-20.0 F) |
| 1978 | -25.0 C (-13.0 F) |
| 1979 | -27.8 C (-18.0 F) |
| 1980 | -22.2 C (-8.0 F) |
| 1981 | -25.6 C (-14.1 F) |
| 1982 | -26.7 C (-16.1 F) |
| 1983 | -23.9 C (-11.0 F) |
| 1984 | -28.9 C (-20.0 F) |
| 1985 | -27.8 C (-18.0 F) |
| 1986 | -21.1 C (-6.0 F) |
| 1987 | -21.7 C (-7.1 F) |
| 1988 | -21.7 C (-7.1 F) |
| 1989 | -25.6 C (-14.1 F) |
| 1990 | -20.6 C (-5.1 F) |
| 1991 | -17.2 C (1.0 F) |
| 1992 | -18.9 C (-2.0 F) |
| 1993 | -21.7 C (-7.1 F) |
| 1994 | -28.9 C (-20.0 F) |
| 1995 | -18.9 C (-2.0 F) |
| 1996 | -21.1 C (-6.0 F) |
| 1997 | -22.2 C (-8.0 F) |
| 1998 | -16.7 C (1.9 F) |
| 1999 | -18.3 C (-0.9 F) |
| 2000 | -20.0 C (-4.0 F) |
| 2001 | -15.6 C (3.9 F) |
| 2002 | -15.6 C (3.9 F) |
| 2003 | -23.3 C (-9.9 F) |
| 2004 | -22.8 C (-9.0 F) |
| 2005 | -22.2 C (-8.0 F) |
| 2006 | -15.6 C (3.9 F) |
| 2007 | -20.0 C (-4.0 F) |
| 2008 | -16.7 C (1.9 F) |
| 2009 | -26.7 C (-16.1 F) |
| 2010 | -21.7 C (-7.1 F) |
| 2011 | -22.8 C (-9.0 F) |
| 2012 | -16.1 C (3.0 F) |
| 2013 | -17.2 C (1.0 F) |
| 2014 | -25.0 C (-13.0 F) |
| 2015 | -27.8 C (-18.0 F) |
| 2016 | -21.1 C (-6.0 F) |
| 2017 | -18.9 C (-2.0 F) |
| 2018 | -24.4 C (-11.9 F) |
| 2019 | -21.1 C (-6.0 F) |
| 2020 | -15.0 C (5.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1967 | 29.0 mm (1.1 in) |
| 1968 | 43.2 mm (1.7 in) |
| 1969 | 50.8 mm (2.0 in) |
| 1970 | 47.0 mm (1.9 in) |
| 1971 | 36.1 mm (1.4 in) |
| 1972 | 53.3 mm (2.1 in) |
| 1973 | 65.8 mm (2.6 in) |
| 1974 | 66.8 mm (2.6 in) |
| 1975 | 51.8 mm (2.0 in) |
| 1976 | 32.8 mm (1.3 in) |
| 1977 | 71.6 mm (2.8 in) |
| 1978 | 60.5 mm (2.4 in) |
| 1979 | 43.7 mm (1.7 in) |
| 1980 | 59.9 mm (2.4 in) |
| 1981 | 42.7 mm (1.7 in) |
| 1982 | 41.1 mm (1.6 in) |
| 1983 | 32.3 mm (1.3 in) |
| 1984 | 41.7 mm (1.6 in) |
| 1985 | 84.3 mm (3.3 in) |
| 1986 | 69.3 mm (2.7 in) |
| 1987 | 66.0 mm (2.6 in) |
| 1988 | 37.3 mm (1.5 in) |
| 1989 | 74.4 mm (2.9 in) |
| 1990 | 55.9 mm (2.2 in) |
| 1991 | 49.0 mm (1.9 in) |
| 1992 | 85.1 mm (3.4 in) |
| 1993 | 57.2 mm (2.3 in) |
| 1994 | 50.5 mm (2.0 in) |
| 1995 | 53.3 mm (2.1 in) |
| 1996 | 58.4 mm (2.3 in) |
| 1997 | 48.3 mm (1.9 in) |
| 1998 | 48.3 mm (1.9 in) |
| 1999 | 51.3 mm (2.0 in) |
| 2000 | 43.2 mm (1.7 in) |
| 2001 | 55.1 mm (2.2 in) |
| 2002 | 32.3 mm (1.3 in) |
| 2003 | 55.6 mm (2.2 in) |
| 2004 | 119.9 mm (4.7 in) |
| 2005 | 55.9 mm (2.2 in) |
| 2006 | 41.4 mm (1.6 in) |
| 2007 | 100.3 mm (3.9 in) |
| 2008 | 25.9 mm (1.0 in) |
| 2009 | 44.5 mm (1.8 in) |
| 2010 | 80.0 mm (3.1 in) |
| 2011 | 40.1 mm (1.6 in) |
| 2012 | 58.4 mm (2.3 in) |
| 2013 | 64.0 mm (2.5 in) |
| 2014 | 47.5 mm (1.9 in) |
| 2015 | 61.0 mm (2.4 in) |
| 2016 | 74.2 mm (2.9 in) |
| 2017 | 55.4 mm (2.2 in) |
| 2018 | 96.5 mm (3.8 in) |
| 2019 | 67.6 mm (2.7 in) |
| 2020 | 32.8 mm (1.3 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1967 | 36.1 mm (1.4 in) |
| 1968 | 57.2 mm (2.3 in) |
| 1969 | 70.4 mm (2.8 in) |
| 1970 | 68.5 mm (2.7 in) |
| 1971 | 60.7 mm (2.4 in) |
| 1972 | 114.3 mm (4.5 in) |
| 1973 | 82.9 mm (3.3 in) |
| 1974 | 149.6 mm (5.9 in) |
| 1975 | 77.7 mm (3.1 in) |
| 1976 | 60.7 mm (2.4 in) |
| 1977 | 112.0 mm (4.4 in) |
| 1978 | 79.5 mm (3.1 in) |
| 1979 | 73.1 mm (2.9 in) |
| 1980 | 75.4 mm (3.0 in) |
| 1981 | 85.8 mm (3.4 in) |
| 1982 | 67.1 mm (2.6 in) |
| 1983 | 78.8 mm (3.1 in) |
| 1984 | 78.5 mm (3.1 in) |
| 1985 | 130.5 mm (5.1 in) |
| 1986 | 100.8 mm (4.0 in) |
| 1987 | 92.4 mm (3.6 in) |
| 1988 | 67.5 mm (2.7 in) |
| 1989 | 97.8 mm (3.9 in) |
| 1990 | 134.8 mm (5.3 in) |
| 1991 | 63.8 mm (2.5 in) |
| 1992 | 128.8 mm (5.1 in) |
| 1993 | 74.5 mm (2.9 in) |
| 1994 | 73.9 mm (2.9 in) |
| 1995 | 64.7 mm (2.5 in) |
| 1996 | 76.2 mm (3.0 in) |
| 1997 | 105.2 mm (4.1 in) |
| 1998 | 70.4 mm (2.8 in) |
| 1999 | 70.1 mm (2.8 in) |
| 2000 | 54.9 mm (2.2 in) |
| 2001 | 68.1 mm (2.7 in) |
| 2002 | 59.0 mm (2.3 in) |
| 2003 | 86.3 mm (3.4 in) |
| 2004 | 122.7 mm (4.8 in) |
| 2005 | 96.1 mm (3.8 in) |
| 2006 | 89.2 mm (3.5 in) |
| 2007 | 133.3 mm (5.2 in) |
| 2008 | 53.4 mm (2.1 in) |
| 2009 | 80.1 mm (3.2 in) |
| 2010 | 90.7 mm (3.6 in) |
| 2011 | 67.1 mm (2.6 in) |
| 2012 | 99.0 mm (3.9 in) |
| 2013 | 93.3 mm (3.7 in) |
| 2014 | 77.5 mm (3.1 in) |
| 2015 | 114.9 mm (4.5 in) |
| 2016 | 112.8 mm (4.4 in) |
| 2017 | 87.2 mm (3.4 in) |
| 2018 | 165.1 mm (6.5 in) |
| 2019 | 102.1 mm (4.0 in) |
| 2020 | 70.4 mm (2.8 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1967 | 6 days |
| 1968 | 25 days |
| 1969 | 15 days |
| 1970 | 8 days |
| 1971 | 14 days |
| 1972 | 9 days |
| 1973 | 15 days |
| 1974 | 10 days |
| 1975 | 13 days |
| 1976 | 13 days |
| 1977 | 18 days |
| 1978 | 11 days |
| 1979 | 12 days |
| 1980 | 16 days |
| 1981 | 17 days |
| 1982 | 17 days |
| 1983 | 27 days |
| 1984 | 15 days |
| 1985 | 14 days |
| 1986 | 16 days |
| 1987 | 11 days |
| 1988 | 14 days |
| 1989 | 9 days |
| 1990 | 12 days |
| 1991 | 15 days |
| 1992 | 16 days |
| 1993 | 13 days |
| 1994 | 14 days |
| 1995 | 19 days |
| 1996 | 10 days |
| 1997 | 12 days |
| 1998 | 18 days |
| 1999 | 21 days |
| 2000 | 13 days |
| 2001 | 16 days |
| 2002 | 12 days |
| 2003 | 12 days |
| 2004 | 14 days |
| 2005 | 16 days |
| 2006 | 16 days |
| 2007 | 15 days |
| 2008 | 13 days |
| 2009 | 17 days |
| 2010 | 16 days |
| 2011 | 13 days |
| 2012 | 9 days |
| 2013 | 11 days |
| 2014 | 14 days |
| 2015 | 11 days |
| 2016 | 10 days |
| 2017 | 21 days |
| 2018 | 11 days |
| 2019 | 12 days |
| 2020 | 11 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
51 years with a frostAcross 51 years with a frost, the median last spring frost at Butler 2 SW falls on 11 May and the median first autumn frost on 11 October, which leaves a median of 151 days between them.
Fitted over all years, the growing season changes by +5.9 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1989 to 2019) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 11 May | n/a | 7 May | n/a | -2.6 days per decade |
| First autumn frost | 11 October | n/a | 14 October | n/a | +3.2 days per decade |
| Growing days | 151 days | n/a | 161 days | n/a | +5.9 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
50 years, 1968 to 2019A day with at least 53.4 mm (2.1 in) of rain is expected about once in 2 years. A day with at least 118.5 mm (4.7 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 53.4 mm (2.1 in) | |
| 5 years | 69.8 mm (2.7 in) | |
| 10 years | 81.1 mm (3.2 in) | |
| 25 years | 95.8 mm (3.8 in) | |
| 50 years | 107.1 mm (4.2 in) | |
| 100 years | 118.5 mm (4.7 in) | Longer than the 50 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, 50 years of values from 1968 to 2019.
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: 119.9 mm (4.7 in) in 2004; 100.3 mm (3.9 in) in 2007; 96.5 mm (3.8 in) in 2018.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Climate Twins
2005 to 2019 against 1961 to 1990Over 2005 to 2019, Butler 2 SW had a mean temperature of 9.7 C (49.4 F) and 1,094.4 mm (43.1 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Belvidere (United States, 407 km away), Matamoras (United States, 440 km away) and Senecaville Lake (United States, 164 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Belvidere | United States | 407 km (253 mi) | 9.7 C (49.5 F) | 1,102.7 mm (43.4 in) | 0.59 |
| Matamoras | United States | 440 km (273 mi) | 9.9 C (49.8 F) | 1,089.3 mm (42.9 in) | 0.61 |
| Senecaville Lake | United States | 164 km (102 mi) | 9.9 C (49.8 F) | 1,057.2 mm (41.6 in) | 0.62 |
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 2026-10-17 (17 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2025-12-31).