Terra Alta #1 Weather Records (USC00468777)
Record envelope, standing records and threshold days for Terra Alta #1 (USC00468777), West Virginia, United States, with 73 years of record.
Key Facts for Terra Alta #1
- Terra Alta #1 (USC00468777) is a weather station in West Virginia, United States at 39.45 latitude and -79.55 longitude, 802 m (2,630 ft) above sea level.
- The station reports from 1948 to 2020, 73 years of record.
- 1,464 records set at Terra Alta #1 still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Terra Alta #1 set a daily record low minimum temperature of -12.8 C (9.0 F) on 15 November 2019.
About the Station
- Location: West Virginia, United States, 39.45 latitude, -79.55 longitude.
- Elevation: 802 m (2,630 ft).
- Period of record: 1948 to 2020, 73 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 | 22.2 C (72.0 F) | -31.7 C (-25.1 F) | n/a | n/a |
| Feb | 23.3 C (73.9 F) | -24.4 C (-11.9 F) | n/a | n/a |
| Mar | 27.2 C (81.0 F) | -22.8 C (-9.0 F) | n/a | n/a |
| Apr | 31.1 C (88.0 F) | -13.3 C (8.1 F) | n/a | n/a |
| May | 31.1 C (88.0 F) | -8.3 C (17.1 F) | n/a | n/a |
| Jun | 32.8 C (91.0 F) | -2.8 C (27.0 F) | n/a | n/a |
| Jul | 35.0 C (95.0 F) | 3.9 C (39.0 F) | n/a | n/a |
| Aug | 34.4 C (93.9 F) | 1.1 C (34.0 F) | n/a | n/a |
| Sep | 31.7 C (89.1 F) | -2.2 C (28.0 F) | n/a | n/a |
| Oct | 28.9 C (84.0 F) | -13.3 C (8.1 F) | n/a | n/a |
| Nov | 25.6 C (78.1 F) | -18.3 C (-0.9 F) | n/a | n/a |
| Dec | 22.2 C (72.0 F) | -30.0 C (-22.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1948 | 2 |
| 1949 | 34 |
| 1950 | 44 |
| 1951 | 14 |
| 1965 | 31 |
| 1966 | 60 |
| 1967 | 52 |
| 1968 | 35 |
| 1969 | 31 |
| 1970 | 29 |
| 1971 | 33 |
| 1972 | 30 |
| 1973 | 18 |
| 1974 | 23 |
| 1975 | 19 |
| 1976 | 44 |
| 1977 | 28 |
| 1978 | 16 |
| 1979 | 32 |
| 1980 | 15 |
| 1981 | 17 |
| 1982 | 24 |
| 1983 | 22 |
| 1984 | 27 |
| 1985 | 29 |
| 1986 | 22 |
| 1987 | 12 |
| 1988 | 57 |
| 1989 | 24 |
| 1990 | 28 |
| 1991 | 20 |
| 1992 | 25 |
| 1993 | 17 |
| 1994 | 20 |
| 1995 | 11 |
| 1996 | 31 |
| 1997 | 8 |
| 1998 | 26 |
| 1999 | 26 |
| 2000 | 22 |
| 2001 | 20 |
| 2002 | 23 |
| 2003 | 13 |
| 2004 | 14 |
| 2005 | 18 |
| 2006 | 23 |
| 2007 | 19 |
| 2008 | 16 |
| 2009 | 26 |
| 2010 | 25 |
| 2011 | 14 |
| 2012 | 22 |
| 2013 | 19 |
| 2014 | 27 |
| 2015 | 31 |
| 2016 | 21 |
| 2017 | 26 |
| 2018 | 29 |
| 2019 | 20 |
All-Time Record Progression
9 new records| Date | Kind | Detail |
|---|---|---|
| 1993-03-14 | Record daily snowfall | Record daily snowfall 55.9 cm (22.0 in) |
| 1995-11-15 | Record daily snowfall | Record daily snowfall 68.6 cm (27.0 in) |
| 2006-08-03 | Record high minimum temperature | Record high minimum temperature 22.2 C (72.0 F) |
| 2010-02-26 | Record snow depth | Record snow depth 121.9 cm (48.0 in) |
| 2010-02-27 | Record snow depth | Record snow depth 134.6 cm (53.0 in) |
| 2010-02-28 | Record snow depth | Record snow depth 137.2 cm (54.0 in) |
| 2010-07-24 | Record high minimum temperature | Record high minimum temperature 22.8 C (73.0 F) |
| 2011-07-22 | Record high minimum temperature | Record high minimum temperature 23.3 C (73.9 F) |
| 2016-01-23 | Record daily snowfall | Record daily snowfall 71.1 cm (28.0 in) |
Wettest Day of Each Month
Jul: 97.8 mm (3.9 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 45.2 mm (1.8 in) | 20 January 2019 |
| Feb | 85.1 mm (3.4 in) | 9 February 1994 |
| Mar | 82.5 mm (3.2 in) | 1 March 2012 |
| Apr | 50.8 mm (2.0 in) | 5 April 1984 |
| May | 71.4 mm (2.8 in) | 24 May 1968 |
| Jun | 71.1 mm (2.8 in) | 23 June 1972 |
| Jul | 97.8 mm (3.9 in) | 4 July 1982 |
| Aug | 86.4 mm (3.4 in) | 21 August 2007 |
| Sep | 79.5 mm (3.1 in) | 7 September 1996 |
| Oct | 57.9 mm (2.3 in) | 21 October 1985 |
| Nov | 74.9 mm (2.9 in) | 5 November 1985 |
| Dec | 49.8 mm (2.0 in) | 9 December 1978 |
Period of Record Coverage
1948 to 2020| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1948 | 92 | 25% | No |
| 1949 | 335 | 92% | Yes |
| 1950 | 286 | 78% | No |
| 1951 | 141 | 39% | No |
| 1965 | 183 | 50% | No |
| 1966 | 365 | 100% | Yes |
| 1967 | 364 | 100% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 363 | 99% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 307 | 84% | No |
| 1972 | 271 | 74% | No |
| 1973 | 247 | 68% | No |
| 1974 | 359 | 98% | Yes |
| 1975 | 363 | 99% | Yes |
| 1976 | 363 | 99% | Yes |
| 1977 | 363 | 99% | Yes |
| 1978 | 360 | 99% | Yes |
| 1979 | 361 | 99% | Yes |
| 1980 | 365 | 100% | Yes |
| 1981 | 355 | 97% | Yes |
| 1982 | 306 | 84% | No |
| 1983 | 309 | 85% | No |
| 1984 | 283 | 77% | No |
| 1985 | 303 | 83% | No |
| 1986 | 283 | 78% | No |
| 1987 | 320 | 88% | No |
| 1988 | 317 | 87% | No |
| 1989 | 306 | 84% | No |
| 1990 | 334 | 92% | Yes |
| 1991 | 364 | 100% | Yes |
| 1992 | 365 | 100% | Yes |
| 1993 | 364 | 100% | Yes |
| 1994 | 365 | 100% | Yes |
| 1995 | 363 | 99% | Yes |
| 1996 | 362 | 99% | Yes |
| 1997 | 192 | 53% | No |
| 1998 | 363 | 99% | Yes |
| 1999 | 364 | 100% | Yes |
| 2000 | 363 | 99% | Yes |
| 2001 | 365 | 100% | Yes |
| 2002 | 359 | 98% | Yes |
| 2003 | 333 | 91% | Yes |
| 2004 | 328 | 90% | No |
| 2005 | 324 | 89% | No |
| 2006 | 327 | 90% | No |
| 2007 | 325 | 89% | No |
| 2008 | 316 | 86% | No |
| 2009 | 320 | 88% | No |
| 2010 | 335 | 92% | Yes |
| 2011 | 320 | 88% | No |
| 2012 | 364 | 99% | Yes |
| 2013 | 360 | 99% | Yes |
| 2014 | 346 | 95% | Yes |
| 2015 | 361 | 99% | Yes |
| 2016 | 355 | 97% | Yes |
| 2017 | 354 | 97% | Yes |
| 2018 | 352 | 96% | Yes |
| 2019 | 362 | 99% | Yes |
| 2020 | 6 | 2% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 15 November 2019 | Terra Alta #1, US | daily low min | -12.8 C (9.0 F) | 1.1 C (2.0 F) | 49 years | 22 of 100 (Routine) |
| 14 November 2019 | Terra Alta #1, US | daily low min (Tie) | -15.6 C (3.9 F) | tie | 32 years | 4 of 100 (Routine) |
| 14 November 2019 | Terra Alta #1, US | daily low max (Tie) | -3.9 C (25.0 F) | tie | 5 years | 2 of 100 (Routine) |
| 13 November 2019 | Terra Alta #1, US | daily low min | -14.4 C (6.1 F) | 4.4 C (7.9 F) | 68 years | 34 of 100 (Routine) |
| 13 November 2019 | Terra Alta #1, US | daily low max | -3.9 C (25.0 F) | 0.6 C (1.1 F) | 5 years | 8 of 100 (Routine) |
| 10 November 2019 | Terra Alta #1, US | daily low min | -11.7 C (10.9 F) | 3.4 C (6.1 F) | 45 years | 25 of 100 (Routine) |
| 9 November 2019 | Terra Alta #1, US | daily low min | -11.7 C (10.9 F) | 0.6 C (1.1 F) | 42 years | 20 of 100 (Routine) |
| 9 November 2019 | Terra Alta #1, US | daily low max | -2.2 C (28.0 F) | 0.5 C (0.9 F) | 24 years | 14 of 100 (Routine) |
| 3 November 2019 | Terra Alta #1, US | daily low min (Tie) | -6.7 C (19.9 F) | tie | 12 years | 2 of 100 (Routine) |
| 2 November 2019 | Terra Alta #1, US | daily low min | -7.2 C (19.0 F) | 0.5 C (0.9 F) | 25 years | 14 of 100 (Routine) |
| 1 November 2019 | Terra Alta #1, US | daily rain | 22.6 mm (0.9 in) | 1.8 mm (0.07 in) | 24 years | 16 of 100 (Routine) |
| 16 October 2019 | Terra Alta #1, US | daily low min (Tie) | -1.7 C (28.9 F) | tie | 49 years | 5 of 100 (Routine) |
| 4 October 2019 | Terra Alta #1, US | monthly high max (Tie) | 28.9 C (84.0 F) | tie | 0 years | 4 of 100 (Routine) |
| 3 October 2019 | Terra Alta #1, US | daily high max | 27.8 C (82.0 F) | 2.2 C (4.0 F) | 13 years | 14 of 100 (Routine) |
| 2 October 2019 | Terra Alta #1, US | monthly high max | 28.9 C (84.0 F) | 1.1 C (2.0 F) | 69 years | 38 of 100 (Notable) |
| 30 September 2019 | Terra Alta #1, US | daily high max | 27.8 C (82.0 F) | 1.7 C (3.1 F) | 48 years | 24 of 100 (Routine) |
| 20 September 2019 | Terra Alta #1, US | daily low min (Tie) | 4.4 C (39.9 F) | tie | 24 years | 3 of 100 (Routine) |
| 12 September 2019 | Terra Alta #1, US | daily high max (Tie) | 29.4 C (84.9 F) | tie | 36 years | 4 of 100 (Routine) |
| 11 August 2019 | Terra Alta #1, US | daily low min (Tie) | 7.8 C (46.0 F) | tie | 46 years | 5 of 100 (Routine) |
| 25 July 2019 | Terra Alta #1, US | daily low min | 8.9 C (48.0 F) | 0.5 C (0.9 F) | 4 years | 9 of 100 (Routine) |
Climate Trend
48 complete years, 1949 to 2019| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1949 | 9.6 C | +0.42 C |
| 1966 | 6.8 C | -2.30 C |
| 1967 | 7.3 C | -1.82 C |
| 1968 | 7.4 C | -1.74 C |
| 1969 | 7.3 C | -1.87 C |
| 1970 | 8.4 C | -0.71 C |
| 1974 | 9.0 C | -0.14 C |
| 1975 | 9.9 C | +0.75 C |
| 1976 | 8.6 C | -0.50 C |
| 1977 | 9.0 C | -0.13 C |
| 1978 | 8.5 C | -0.69 C |
| 1979 | 8.8 C | -0.33 C |
| 1980 | 8.8 C | -0.33 C |
| 1981 | 8.7 C | -0.40 C |
| 1983 | 8.7 C | -0.44 C |
| 1985 | 9.5 C | +0.40 C |
| 1987 | 9.8 C | +0.64 C |
| 1988 | 9.2 C | +0.01 C |
| 1989 | 8.4 C | -0.79 C |
| 1990 | 10.4 C | +1.27 C |
| 1991 | 10.5 C | +1.33 C |
| 1992 | 8.8 C | -0.32 C |
| 1993 | 9.2 C | +0.03 C |
| 1994 | 9.4 C | +0.23 C |
| 1995 | 8.9 C | -0.25 C |
| 1996 | 8.5 C | -0.69 C |
| 1998 | 10.7 C | +1.54 C |
| 1999 | 10.1 C | +0.94 C |
| 2000 | 9.2 C | +0.08 C |
| 2001 | 9.9 C | +0.76 C |
| 2002 | 10.1 C | +0.91 C |
| 2003 | 8.9 C | -0.25 C |
| 2004 | 9.7 C | +0.60 C |
| 2005 | 9.8 C | +0.65 C |
| 2006 | 10.2 C | +1.02 C |
| 2007 | 10.0 C | +0.82 C |
| 2008 | 9.7 C | +0.53 C |
| 2009 | 9.4 C | +0.30 C |
| 2010 | 9.5 C | +0.39 C |
| 2011 | 10.6 C | +1.42 C |
| 2012 | 10.4 C | +1.21 C |
| 2013 | 8.4 C | -0.75 C |
| 2014 | 7.7 C | -1.44 C |
| 2015 | 8.9 C | -0.29 C |
| 2016 | 9.5 C | +0.40 C |
| 2017 | 9.4 C | +0.29 C |
| 2018 | 8.7 C | -0.48 C |
| 2019 | 8.9 C | -0.28 C |
The annual mean temperature here has risen by 0.2 C (0.1 to 0.4) per decade over 1949 to 2019. In Fahrenheit: 0.4 F (0.1 to 0.6) per decade. The slope is a straight line fitted to 48 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 0.4) per decade | 0.4 F (0.1 to 0.6) per decade | 1949 to 2019 | 48 | Rise |
| Mean daily maximum | 0.09 C (-0.05 to 0.22) per decade | 0.2 F (-0.1 to 0.4) per decade | 1949 to 2019 | 48 | Not clearly different from zero |
| Mean daily minimum | 0.3 C (0.2 to 0.5) per decade | 0.6 F (0.3 to 0.9) per decade | 1949 to 2019 | 48 | 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
1948 to 2020| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 35.0 C (95.0 F) | 1988 | 30.6 C (87.1 F) | 60 |
| Coldest night (TNn) | -31.7 C (-25.1 F) | 1985 | -21.1 C (-6.0 F) | 60 |
| Wettest day (Rx1day) | 97.8 mm (3.9 in) | 1982 | 52.6 mm (2.1 in) | 59 |
| Wettest five days (Rx5day) | 186.1 mm (7.3 in) | 1996 | 91.5 mm (3.6 in) | 59 |
| Longest dry spell (CDD) | 29 days | 1995 | 12 days | 59 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1948 | 27.8 C (82.0 F) |
| 1949 | 32.2 C (90.0 F) |
| 1950 | 30.0 C (86.0 F) |
| 1951 | 31.1 C (88.0 F) |
| 1965 | 32.8 C (91.0 F) |
| 1966 | 34.4 C (93.9 F) |
| 1967 | 31.1 C (88.0 F) |
| 1968 | 30.6 C (87.1 F) |
| 1969 | 31.1 C (88.0 F) |
| 1970 | 29.4 C (84.9 F) |
| 1971 | 31.1 C (88.0 F) |
| 1972 | 31.7 C (89.1 F) |
| 1973 | 33.3 C (91.9 F) |
| 1974 | 31.1 C (88.0 F) |
| 1975 | 31.7 C (89.1 F) |
| 1976 | 31.1 C (88.0 F) |
| 1977 | 31.1 C (88.0 F) |
| 1978 | 30.0 C (86.0 F) |
| 1979 | 30.6 C (87.1 F) |
| 1980 | 31.7 C (89.1 F) |
| 1981 | 30.6 C (87.1 F) |
| 1982 | 28.9 C (84.0 F) |
| 1983 | 31.7 C (89.1 F) |
| 1984 | 28.3 C (82.9 F) |
| 1985 | 29.4 C (84.9 F) |
| 1986 | 29.4 C (84.9 F) |
| 1987 | 32.2 C (90.0 F) |
| 1988 | 35.0 C (95.0 F) |
| 1989 | 28.3 C (82.9 F) |
| 1990 | 28.3 C (82.9 F) |
| 1991 | 31.1 C (88.0 F) |
| 1992 | 28.3 C (82.9 F) |
| 1993 | 31.7 C (89.1 F) |
| 1994 | 31.1 C (88.0 F) |
| 1995 | 32.8 C (91.0 F) |
| 1996 | 29.4 C (84.9 F) |
| 1997 | 28.3 C (82.9 F) |
| 1998 | 30.6 C (87.1 F) |
| 1999 | 31.7 C (89.1 F) |
| 2000 | 29.4 C (84.9 F) |
| 2001 | 28.9 C (84.0 F) |
| 2002 | 30.0 C (86.0 F) |
| 2003 | 27.8 C (82.0 F) |
| 2004 | 27.8 C (82.0 F) |
| 2005 | 30.0 C (86.0 F) |
| 2006 | 30.0 C (86.0 F) |
| 2007 | 30.6 C (87.1 F) |
| 2008 | 30.6 C (87.1 F) |
| 2009 | 29.4 C (84.9 F) |
| 2010 | 31.7 C (89.1 F) |
| 2011 | 32.8 C (91.0 F) |
| 2012 | 33.3 C (91.9 F) |
| 2013 | 30.0 C (86.0 F) |
| 2014 | 28.3 C (82.9 F) |
| 2015 | 29.4 C (84.9 F) |
| 2016 | 31.1 C (88.0 F) |
| 2017 | 28.9 C (84.0 F) |
| 2018 | 30.6 C (87.1 F) |
| 2019 | 29.4 C (84.9 F) |
| 2020 | 11.1 C (52.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1948 | -18.3 C (-0.9 F) |
| 1949 | -20.0 C (-4.0 F) |
| 1950 | -25.0 C (-13.0 F) |
| 1951 | -20.6 C (-5.1 F) |
| 1965 | -16.7 C (1.9 F) |
| 1966 | -30.6 C (-23.1 F) |
| 1967 | -23.3 C (-9.9 F) |
| 1968 | -23.9 C (-11.0 F) |
| 1969 | -23.3 C (-9.9 F) |
| 1970 | -26.1 C (-15.0 F) |
| 1971 | -21.7 C (-7.1 F) |
| 1972 | -26.7 C (-16.1 F) |
| 1973 | -17.8 C (0.0 F) |
| 1974 | -16.1 C (3.0 F) |
| 1975 | -18.3 C (-0.9 F) |
| 1976 | -23.9 C (-11.0 F) |
| 1977 | -28.3 C (-18.9 F) |
| 1978 | -23.3 C (-9.9 F) |
| 1979 | -23.3 C (-9.9 F) |
| 1980 | -20.6 C (-5.1 F) |
| 1981 | -23.3 C (-9.9 F) |
| 1982 | -30.6 C (-23.1 F) |
| 1983 | -30.0 C (-22.0 F) |
| 1984 | -25.6 C (-14.1 F) |
| 1985 | -31.7 C (-25.1 F) |
| 1986 | -20.6 C (-5.1 F) |
| 1987 | -20.0 C (-4.0 F) |
| 1988 | -21.7 C (-7.1 F) |
| 1989 | -26.7 C (-16.1 F) |
| 1990 | -21.1 C (-6.0 F) |
| 1991 | -18.3 C (-0.9 F) |
| 1992 | -18.9 C (-2.0 F) |
| 1993 | -20.0 C (-4.0 F) |
| 1994 | -31.1 C (-24.0 F) |
| 1995 | -22.2 C (-8.0 F) |
| 1996 | -24.4 C (-11.9 F) |
| 1997 | -22.2 C (-8.0 F) |
| 1998 | -15.6 C (3.9 F) |
| 1999 | -17.8 C (0.0 F) |
| 2000 | -18.3 C (-0.9 F) |
| 2001 | -13.9 C (7.0 F) |
| 2002 | -16.7 C (1.9 F) |
| 2003 | -18.9 C (-2.0 F) |
| 2004 | -20.0 C (-4.0 F) |
| 2005 | -18.9 C (-2.0 F) |
| 2006 | -20.6 C (-5.1 F) |
| 2007 | -22.2 C (-8.0 F) |
| 2008 | -18.9 C (-2.0 F) |
| 2009 | -24.4 C (-11.9 F) |
| 2010 | -18.3 C (-0.9 F) |
| 2011 | -19.4 C (-2.9 F) |
| 2012 | -15.0 C (5.0 F) |
| 2013 | -17.8 C (0.0 F) |
| 2014 | -26.1 C (-15.0 F) |
| 2015 | -24.4 C (-11.9 F) |
| 2016 | -20.0 C (-4.0 F) |
| 2017 | -21.1 C (-6.0 F) |
| 2018 | -22.8 C (-9.0 F) |
| 2019 | -25.6 C (-14.1 F) |
| 2020 | -7.8 C (18.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1948 | 20.8 mm (0.8 in) |
| 1949 | 80.0 mm (3.1 in) |
| 1950 | 40.1 mm (1.6 in) |
| 1951 | 45.7 mm (1.8 in) |
| 1965 | 25.9 mm (1.0 in) |
| 1966 | 29.0 mm (1.1 in) |
| 1967 | 47.2 mm (1.9 in) |
| 1968 | 71.4 mm (2.8 in) |
| 1969 | 46.7 mm (1.8 in) |
| 1970 | 59.7 mm (2.4 in) |
| 1971 | 62.2 mm (2.4 in) |
| 1972 | 71.1 mm (2.8 in) |
| 1973 | 38.4 mm (1.5 in) |
| 1974 | 46.0 mm (1.8 in) |
| 1975 | 45.7 mm (1.8 in) |
| 1976 | 40.1 mm (1.6 in) |
| 1977 | 53.3 mm (2.1 in) |
| 1978 | 52.6 mm (2.1 in) |
| 1979 | 41.1 mm (1.6 in) |
| 1980 | 55.9 mm (2.2 in) |
| 1981 | 37.3 mm (1.5 in) |
| 1982 | 97.8 mm (3.9 in) |
| 1983 | 37.6 mm (1.5 in) |
| 1984 | 64.8 mm (2.6 in) |
| 1985 | 74.9 mm (2.9 in) |
| 1986 | 44.5 mm (1.8 in) |
| 1987 | 79.2 mm (3.1 in) |
| 1988 | 35.6 mm (1.4 in) |
| 1989 | 49.5 mm (1.9 in) |
| 1990 | 91.4 mm (3.6 in) |
| 1991 | 41.1 mm (1.6 in) |
| 1992 | 48.3 mm (1.9 in) |
| 1993 | 58.4 mm (2.3 in) |
| 1994 | 85.1 mm (3.4 in) |
| 1995 | 76.2 mm (3.0 in) |
| 1996 | 83.8 mm (3.3 in) |
| 1997 | 63.8 mm (2.5 in) |
| 1998 | 44.2 mm (1.7 in) |
| 1999 | 51.8 mm (2.0 in) |
| 2000 | 68.6 mm (2.7 in) |
| 2001 | 45.0 mm (1.8 in) |
| 2002 | 49.0 mm (1.9 in) |
| 2003 | 67.6 mm (2.7 in) |
| 2004 | 66.0 mm (2.6 in) |
| 2005 | 54.9 mm (2.2 in) |
| 2006 | 47.0 mm (1.9 in) |
| 2007 | 86.4 mm (3.4 in) |
| 2008 | 58.9 mm (2.3 in) |
| 2009 | 37.3 mm (1.5 in) |
| 2010 | 47.5 mm (1.9 in) |
| 2011 | 51.3 mm (2.0 in) |
| 2012 | 82.5 mm (3.2 in) |
| 2013 | 67.1 mm (2.6 in) |
| 2014 | 62.7 mm (2.5 in) |
| 2015 | 34.0 mm (1.3 in) |
| 2016 | 54.6 mm (2.1 in) |
| 2017 | 70.6 mm (2.8 in) |
| 2018 | 61.2 mm (2.4 in) |
| 2019 | 50.8 mm (2.0 in) |
| 2020 | n/a |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1948 | 29.4 mm (1.2 in) |
| 1949 | 91.7 mm (3.6 in) |
| 1950 | 86.3 mm (3.4 in) |
| 1951 | 89.4 mm (3.5 in) |
| 1965 | 52.7 mm (2.1 in) |
| 1966 | 62.7 mm (2.5 in) |
| 1967 | 104.5 mm (4.1 in) |
| 1968 | 98.0 mm (3.9 in) |
| 1969 | 76.0 mm (3.0 in) |
| 1970 | 94.5 mm (3.7 in) |
| 1971 | 114.3 mm (4.5 in) |
| 1972 | 139.2 mm (5.5 in) |
| 1973 | 79.8 mm (3.1 in) |
| 1974 | 91.5 mm (3.6 in) |
| 1975 | 109.2 mm (4.3 in) |
| 1976 | 74.7 mm (2.9 in) |
| 1977 | 74.7 mm (2.9 in) |
| 1978 | 76.3 mm (3.0 in) |
| 1979 | 87.8 mm (3.5 in) |
| 1980 | 133.6 mm (5.3 in) |
| 1981 | 88.6 mm (3.5 in) |
| 1982 | 138.7 mm (5.5 in) |
| 1983 | 71.6 mm (2.8 in) |
| 1984 | 94.3 mm (3.7 in) |
| 1985 | 119.1 mm (4.7 in) |
| 1986 | 90.2 mm (3.6 in) |
| 1987 | 89.2 mm (3.5 in) |
| 1988 | 71.2 mm (2.8 in) |
| 1989 | 71.6 mm (2.8 in) |
| 1990 | 147.4 mm (5.8 in) |
| 1991 | 68.9 mm (2.7 in) |
| 1992 | 99.9 mm (3.9 in) |
| 1993 | 76.3 mm (3.0 in) |
| 1994 | 120.7 mm (4.8 in) |
| 1995 | 121.4 mm (4.8 in) |
| 1996 | 186.1 mm (7.3 in) |
| 1997 | 90.9 mm (3.6 in) |
| 1998 | 82.6 mm (3.3 in) |
| 1999 | 77.0 mm (3.0 in) |
| 2000 | 103.9 mm (4.1 in) |
| 2001 | 83.8 mm (3.3 in) |
| 2002 | 92.6 mm (3.6 in) |
| 2003 | 157.7 mm (6.2 in) |
| 2004 | 81.2 mm (3.2 in) |
| 2005 | 84.4 mm (3.3 in) |
| 2006 | 96.3 mm (3.8 in) |
| 2007 | 116.6 mm (4.6 in) |
| 2008 | 103.2 mm (4.1 in) |
| 2009 | 68.2 mm (2.7 in) |
| 2010 | 116.9 mm (4.6 in) |
| 2011 | 119.4 mm (4.7 in) |
| 2012 | 100.7 mm (4.0 in) |
| 2013 | 122.0 mm (4.8 in) |
| 2014 | 118.4 mm (4.7 in) |
| 2015 | 78.2 mm (3.1 in) |
| 2016 | 78.3 mm (3.1 in) |
| 2017 | 99.8 mm (3.9 in) |
| 2018 | 121.7 mm (4.8 in) |
| 2019 | 89.7 mm (3.5 in) |
| 2020 | n/a |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1948 | 11 days |
| 1949 | 13 days |
| 1950 | 11 days |
| 1951 | 8 days |
| 1965 | 13 days |
| 1966 | 18 days |
| 1967 | 18 days |
| 1968 | 13 days |
| 1969 | 12 days |
| 1970 | 17 days |
| 1971 | 17 days |
| 1972 | 13 days |
| 1973 | 12 days |
| 1974 | 12 days |
| 1975 | 8 days |
| 1976 | 10 days |
| 1977 | 13 days |
| 1978 | 11 days |
| 1979 | 10 days |
| 1980 | 13 days |
| 1981 | 9 days |
| 1982 | 15 days |
| 1983 | 13 days |
| 1984 | 10 days |
| 1985 | 14 days |
| 1986 | 9 days |
| 1987 | 12 days |
| 1988 | 24 days |
| 1989 | 11 days |
| 1990 | 12 days |
| 1991 | 25 days |
| 1992 | 11 days |
| 1993 | 15 days |
| 1994 | 10 days |
| 1995 | 29 days |
| 1996 | 11 days |
| 1997 | 9 days |
| 1998 | 12 days |
| 1999 | 13 days |
| 2000 | 11 days |
| 2001 | 10 days |
| 2002 | 16 days |
| 2003 | 9 days |
| 2004 | 12 days |
| 2005 | 22 days |
| 2006 | 12 days |
| 2007 | 11 days |
| 2008 | 21 days |
| 2009 | 17 days |
| 2010 | 12 days |
| 2011 | 10 days |
| 2012 | 11 days |
| 2013 | 14 days |
| 2014 | 9 days |
| 2015 | 11 days |
| 2016 | 10 days |
| 2017 | 14 days |
| 2018 | 8 days |
| 2019 | 9 days |
| 2020 | n/a |
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
48 years with a frostAcross 48 years with a frost, the median last spring frost at Terra Alta #1 falls on 6 May and the median first autumn frost on 10 October, which leaves a median of 158 days between them.
Fitted over all years, the growing season changes by +7.0 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 | 6 May | n/a | 4 May | n/a | -2.7 days per decade |
| First autumn frost | 10 October | n/a | 14 October | n/a | +4.3 days per decade |
| Growing days | 158 days | n/a | 163 days | n/a | +7.0 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
52 years, 1966 to 2018A day with at least 55.6 mm (2.2 in) of rain is expected about once in 2 years. A day with at least 106.0 mm (4.2 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 55.6 mm (2.2 in) | |
| 5 years | 70.6 mm (2.8 in) | |
| 10 years | 79.9 mm (3.1 in) | |
| 25 years | 91.0 mm (3.6 in) | |
| 50 years | 98.7 mm (3.9 in) | |
| 100 years | 106.0 mm (4.2 in) | Longer than the 52 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, 52 years of values from 1966 to 2018.
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: 97.8 mm (3.9 in) in 1982; 91.4 mm (3.6 in) in 1990; 86.4 mm (3.4 in) in 2007.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Terra Alta #1, at 1974. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1974 ran 1.1 C (1.9 F) higher than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1974 | +1.1 | +1.9 | 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
2005 to 2019 against 1961 to 1990Over 2005 to 2019, Terra Alta #1 had a mean temperature of 9.4 C (48.9 F) and 1,429.1 mm (56.3 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Long Valley (United States, 432 km away), McRoss (United States, 193 km away) and N Foster 1 E (United States, 711 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Long Valley | United States | 432 km (268 mi) | 9.2 C (48.6 F) | 1,351.5 mm (53.2 in) | 0.78 |
| McRoss | United States | 193 km (120 mi) | 9.7 C (49.5 F) | 1,287.5 mm (50.7 in) | 0.95 |
| N Foster 1 E | United States | 711 km (442 mi) | 8.9 C (48.1 F) | 1,350.0 mm (53.1 in) | 0.97 |
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).