Troy Weather Records (USC00248390)
Record envelope, standing records and threshold days for Troy (USC00248390), Montana, United States, with 67 years of record.
Key Facts for Troy
- Troy (USC00248390) is a weather station in Montana, United States at 48.48 latitude and -115.91 longitude, 608 m (1,994 ft) above sea level.
- The station reports from 1960 to 2026, 67 years of record.
- 1,464 records set at Troy still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Troy tied a daily record low maximum temperature of 14.4 C (57.9 F) on 8 September 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: Montana, United States, 48.48 latitude, -115.91 longitude.
- Elevation: 608 m (1,994 ft).
- Period of record: 1960 to 2026, 67 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
3 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 13.9 C (57.0 F) | -33.3 C (-27.9 F) | n/a | n/a |
| Feb | 17.8 C (64.0 F) | -28.9 C (-20.0 F) | n/a | n/a |
| Mar | 27.8 C (82.0 F) | -21.1 C (-6.0 F) | n/a | n/a |
| Apr | 30.6 C (87.1 F) | -13.3 C (8.1 F) | 28.9 C (84.0 F) | -3.3 C (26.1 F) |
| May | 36.1 C (97.0 F) | -5.6 C (21.9 F) | 34.4 C (93.9 F) | 0.6 C (33.1 F) |
| Jun | 42.8 C (109.0 F) | -2.8 C (27.0 F) | 33.3 C (91.9 F) | 1.1 C (34.0 F) |
| Jul | 43.3 C (109.9 F) | -3.3 C (26.1 F) | 37.8 C (100.0 F) | 6.1 C (43.0 F) |
| Aug | 43.3 C (109.9 F) | -0.6 C (30.9 F) | 35.6 C (96.1 F) | 7.2 C (45.0 F) |
| Sep | 38.9 C (102.0 F) | -8.3 C (17.1 F) | 25.0 C (77.0 F) | 7.2 C (45.0 F) |
| Oct | 28.9 C (84.0 F) | -19.4 C (-2.9 F) | n/a | n/a |
| Nov | 20.6 C (69.1 F) | -25.6 C (-14.1 F) | n/a | n/a |
| Dec | 15.6 C (60.1 F) | -37.2 C (-35.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1960 | 3 |
| 1961 | 33 |
| 1962 | 45 |
| 1963 | 21 |
| 1964 | 29 |
| 1965 | 28 |
| 1966 | 30 |
| 1967 | 33 |
| 1968 | 25 |
| 1969 | 27 |
| 1970 | 26 |
| 1971 | 27 |
| 1972 | 38 |
| 1973 | 22 |
| 1974 | 12 |
| 1975 | 29 |
| 1976 | 14 |
| 1977 | 14 |
| 1978 | 15 |
| 1979 | 18 |
| 1980 | 26 |
| 1981 | 17 |
| 1982 | 9 |
| 1983 | 27 |
| 1984 | 24 |
| 1985 | 45 |
| 1986 | 34 |
| 1987 | 18 |
| 1988 | 16 |
| 1989 | 24 |
| 1990 | 26 |
| 1991 | 13 |
| 1992 | 23 |
| 1993 | 21 |
| 1994 | 33 |
| 1995 | 20 |
| 1996 | 27 |
| 1997 | 13 |
| 1998 | 23 |
| 1999 | 26 |
| 2000 | 9 |
| 2001 | 28 |
| 2002 | 34 |
| 2003 | 42 |
| 2004 | 23 |
| 2005 | 26 |
| 2006 | 27 |
| 2007 | 16 |
| 2008 | 18 |
| 2009 | 27 |
| 2010 | 14 |
| 2011 | 7 |
| 2012 | 27 |
| 2013 | 19 |
| 2014 | 19 |
| 2015 | 29 |
| 2016 | 20 |
| 2017 | 3 |
| 2018 | 14 |
| 2019 | 17 |
| 2020 | 26 |
| 2021 | 36 |
| 2022 | 11 |
| 2024 | 9 |
| 2025 | 4 |
| 2026 | 5 |
All-Time Record Progression
6 new records| Date | Kind | Detail |
|---|---|---|
| 1994-08-15 | Record high maximum temperature | Record high maximum temperature 43.3 C (109.9 F) |
| 1998-05-27 | Record daily precipitation | Record daily precipitation 84.8 mm (3.3 in) |
| 2002-07-13 | Record high minimum temperature | Record high minimum temperature 22.2 C (72.0 F) |
| 2007-12-03 | Record daily snowfall | Record daily snowfall 43.2 cm (17.0 in) |
| 2017-02-09 | Record snow depth | Record snow depth 91.4 cm (36.0 in) |
| 2019-02-12 | Record daily snowfall | Record daily snowfall 46.0 cm (18.1 in) |
Wettest Day of Each Month
May: 84.8 mm (3.3 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 53.1 mm (2.1 in) | 13 January 1969 |
| Feb | 33.3 mm (1.3 in) | 8 February 1996 |
| Mar | 63.2 mm (2.5 in) | 16 March 2015 |
| Apr | 31.8 mm (1.3 in) | 5 April 1991 |
| May | 84.8 mm (3.3 in) | 27 May 1998 |
| Jun | 40.6 mm (1.6 in) | 19 June 2013 |
| Jul | 50.0 mm (2.0 in) | 30 July 1997 |
| Aug | 46.7 mm (1.8 in) | 30 August 1986 |
| Sep | 30.7 mm (1.2 in) | 16 September 2004 |
| Oct | 36.8 mm (1.4 in) | 29 October 2021 |
| Nov | 46.0 mm (1.8 in) | 25 November 1990 |
| Dec | 53.1 mm (2.1 in) | 22 December 1964 |
Period of Record Coverage
1960 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1960 | 121 | 33% | No |
| 1961 | 364 | 100% | Yes |
| 1962 | 356 | 98% | Yes |
| 1963 | 362 | 99% | Yes |
| 1964 | 357 | 98% | Yes |
| 1965 | 345 | 95% | Yes |
| 1966 | 332 | 91% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 357 | 98% | Yes |
| 1969 | 362 | 99% | Yes |
| 1970 | 361 | 99% | Yes |
| 1971 | 362 | 99% | Yes |
| 1972 | 343 | 94% | Yes |
| 1973 | 303 | 83% | No |
| 1974 | 289 | 79% | No |
| 1975 | 285 | 78% | No |
| 1976 | 278 | 76% | No |
| 1977 | 260 | 71% | No |
| 1978 | 279 | 76% | No |
| 1979 | 205 | 56% | No |
| 1980 | 359 | 98% | Yes |
| 1981 | 360 | 99% | Yes |
| 1982 | 353 | 97% | Yes |
| 1983 | 336 | 92% | Yes |
| 1984 | 346 | 95% | Yes |
| 1985 | 318 | 87% | No |
| 1986 | 299 | 82% | No |
| 1987 | 313 | 86% | No |
| 1988 | 285 | 78% | No |
| 1989 | 358 | 98% | Yes |
| 1990 | 348 | 95% | Yes |
| 1991 | 266 | 73% | No |
| 1992 | 201 | 55% | No |
| 1993 | 199 | 55% | No |
| 1994 | 260 | 71% | No |
| 1995 | 300 | 82% | No |
| 1996 | 282 | 77% | No |
| 1997 | 273 | 75% | No |
| 1998 | 261 | 72% | No |
| 1999 | 310 | 85% | No |
| 2000 | 330 | 90% | Yes |
| 2001 | 348 | 95% | Yes |
| 2002 | 303 | 83% | No |
| 2003 | 294 | 81% | No |
| 2004 | 343 | 94% | Yes |
| 2005 | 361 | 99% | Yes |
| 2006 | 361 | 99% | Yes |
| 2007 | 351 | 96% | Yes |
| 2008 | 362 | 99% | Yes |
| 2009 | 364 | 100% | Yes |
| 2010 | 248 | 68% | No |
| 2011 | 218 | 60% | No |
| 2012 | 357 | 98% | Yes |
| 2013 | 349 | 96% | Yes |
| 2014 | 365 | 100% | Yes |
| 2015 | 337 | 92% | Yes |
| 2016 | 366 | 100% | Yes |
| 2017 | 261 | 72% | No |
| 2018 | 364 | 100% | Yes |
| 2019 | 365 | 100% | Yes |
| 2020 | 366 | 100% | Yes |
| 2021 | 365 | 100% | Yes |
| 2022 | 108 | 30% | No |
| 2023 | 2 | 1% | No |
| 2024 | 213 | 58% | No |
| 2025 | 59 | 16% | No |
| 2026 | 133 | 36% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 8 September 2026 | Troy, US | daily low max (Tie, Provisional) | 14.4 C (57.9 F) | tie | 40 years | 4 of 100 (Routine) |
| 24 July 2026 | Troy, US | daily high max (Tie) | 37.8 C (100.0 F) | tie | 20 years | 3 of 100 (Routine) |
| 21 July 2026 | Troy, US | daily high min | 17.8 C (64.0 F) | 3.4 C (6.1 F) | 28 years | 24 of 100 (Routine) |
| 17 July 2026 | Troy, US | daily high min | 17.2 C (63.0 F) | 0.5 C (0.9 F) | 24 years | 14 of 100 (Routine) |
| 3 July 2026 | Troy, US | daily high min (Tie) | 13.3 C (55.9 F) | tie | 29 years | 3 of 100 (Routine) |
| 28 May 2026 | Troy, US | daily high max (Tie) | 34.4 C (93.9 F) | tie | 24 years | 3 of 100 (Routine) |
| 26 May 2026 | Troy, US | daily high min | 13.9 C (57.0 F) | 1.1 C (2.0 F) | 40 years | 20 of 100 (Routine) |
| 25 May 2026 | Troy, US | daily high min | 12.8 C (55.0 F) | 0.6 C (1.1 F) | 8 years | 9 of 100 (Routine) |
| 22 April 2026 | Troy, US | daily high max | 28.9 C (84.0 F) | 1.1 C (2.0 F) | 56 years | 25 of 100 (Routine) |
| 12 April 2026 | Troy, US | daily high min (Tie) | 7.8 C (46.0 F) | tie | 13 years | 2 of 100 (Routine) |
| 27 February 2025 | Troy, US | daily high max (Tie) | 15.6 C (60.1 F) | tie | 5 years | 1 of 100 (Routine) |
| 24 February 2025 | Troy, US | daily high max | 12.8 C (55.0 F) | 1.1 C (2.0 F) | 62 years | 26 of 100 (Routine) |
| 23 February 2025 | Troy, US | daily rain | 26.7 mm (1.1 in) | 13.5 mm (0.5 in) | 4 years | 30 of 100 (Routine) |
| 23 February 2025 | Troy, US | daily high min | 3.3 C (37.9 F) | 0.5 C (0.9 F) | 42 years | 18 of 100 (Routine) |
| 13 February 2025 | Troy, US | daily low min | -19.4 C (-2.9 F) | 3.8 C (6.8 F) | 47 years | 26 of 100 (Routine) |
| 12 February 2025 | Troy, US | daily low min | -20.6 C (-5.1 F) | 3.4 C (6.1 F) | 4 years | 13 of 100 (Routine) |
| 11 February 2025 | Troy, US | daily low min (Tie) | -21.7 C (-7.1 F) | tie | 4 years | 1 of 100 (Routine) |
| 20 October 2024 | Troy, US | daily high max | 23.9 C (75.0 F) | 5.6 C (10.1 F) | 24 years | 24 of 100 (Routine) |
| 16 October 2024 | Troy, US | daily rain | 5.8 mm (0.23 in) | 2.5 mm (0.10 in) | 34 years | 20 of 100 (Routine) |
| 8 October 2024 | Troy, US | daily high max (Tie) | 25.6 C (78.1 F) | tie | 45 years | 4 of 100 (Routine) |
Climate Trend
34 complete years, 1961 to 2021| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1961 | 7.8 C | -0.18 C |
| 1962 | 7.6 C | -0.33 C |
| 1963 | 8.0 C | +0.03 C |
| 1964 | 6.9 C | -1.04 C |
| 1965 | 7.6 C | -0.33 C |
| 1967 | 8.5 C | +0.51 C |
| 1968 | 7.5 C | -0.48 C |
| 1969 | 7.4 C | -0.51 C |
| 1970 | 7.3 C | -0.62 C |
| 1971 | 7.1 C | -0.90 C |
| 1972 | 7.0 C | -0.91 C |
| 1980 | 7.4 C | -0.56 C |
| 1981 | 7.9 C | -0.03 C |
| 1982 | 7.2 C | -0.78 C |
| 1983 | 7.8 C | -0.15 C |
| 1984 | 7.2 C | -0.76 C |
| 1985 | 6.0 C | -1.91 C |
| 1986 | 8.0 C | +0.06 C |
| 1987 | 8.3 C | +0.35 C |
| 1989 | 7.0 C | -0.94 C |
| 1990 | 9.1 C | +1.15 C |
| 2000 | 8.2 C | +0.26 C |
| 2002 | 8.7 C | +0.75 C |
| 2005 | 8.5 C | +0.59 C |
| 2006 | 8.8 C | +0.85 C |
| 2008 | 6.9 C | -1.06 C |
| 2009 | 7.0 C | -0.99 C |
| 2012 | 9.4 C | +1.45 C |
| 2014 | 9.1 C | +1.10 C |
| 2016 | 9.6 C | +1.61 C |
| 2018 | 8.6 C | +0.69 C |
| 2019 | 8.2 C | +0.24 C |
| 2020 | 9.3 C | +1.30 C |
| 2021 | 9.5 C | +1.59 C |
The annual mean temperature here has risen by 0.3 C (0.1 to 0.4) per decade over 1961 to 2021. In Fahrenheit: 0.5 F (0.2 to 0.7) per decade. The slope is a straight line fitted to 34 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.3 C (0.1 to 0.4) per decade | 0.5 F (0.2 to 0.7) per decade | 1961 to 2021 | 34 | Rise |
| Mean daily maximum | 0.2 C (0.1 to 0.4) per decade | 0.4 F (0.1 to 0.7) per decade | 1961 to 2021 | 34 | Rise |
| Mean daily minimum | 0.3 C (0.2 to 0.4) per decade | 0.5 F (0.3 to 0.8) per decade | 1961 to 2021 | 34 | 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
1960 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 43.3 C (109.9 F) | 1994 | 37.8 C (100.0 F) | 67 |
| Coldest night (TNn) | -37.2 C (-35.0 F) | 1968 | -21.7 C (-7.1 F) | 67 |
| Wettest day (Rx1day) | 84.8 mm (3.3 in) | 1998 | 30.5 mm (1.2 in) | 67 |
| Wettest five days (Rx5day) | 107.2 mm (4.2 in) | 1998 | 57.6 mm (2.3 in) | 66 |
| Longest dry spell (CDD) | 74 days | 1969 | 24 days | 67 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1960 | 31.1 C (88.0 F) |
| 1961 | 41.1 C (106.0 F) |
| 1962 | 35.6 C (96.1 F) |
| 1963 | 37.8 C (100.0 F) |
| 1964 | 40.6 C (105.1 F) |
| 1965 | 37.2 C (99.0 F) |
| 1966 | 37.2 C (99.0 F) |
| 1967 | 40.0 C (104.0 F) |
| 1968 | 38.9 C (102.0 F) |
| 1969 | 36.1 C (97.0 F) |
| 1970 | 37.8 C (100.0 F) |
| 1971 | 39.4 C (102.9 F) |
| 1972 | 38.3 C (100.9 F) |
| 1973 | 37.8 C (100.0 F) |
| 1974 | 36.7 C (98.1 F) |
| 1975 | 38.9 C (102.0 F) |
| 1976 | 34.4 C (93.9 F) |
| 1977 | 39.4 C (102.9 F) |
| 1978 | 37.8 C (100.0 F) |
| 1979 | 27.8 C (82.0 F) |
| 1980 | 35.6 C (96.1 F) |
| 1981 | 36.7 C (98.1 F) |
| 1982 | 36.1 C (97.0 F) |
| 1983 | 35.6 C (96.1 F) |
| 1984 | 37.2 C (99.0 F) |
| 1985 | 38.9 C (102.0 F) |
| 1986 | 36.7 C (98.1 F) |
| 1987 | 36.7 C (98.1 F) |
| 1988 | 37.2 C (99.0 F) |
| 1989 | 36.7 C (98.1 F) |
| 1990 | 39.4 C (102.9 F) |
| 1991 | 37.2 C (99.0 F) |
| 1992 | 40.0 C (104.0 F) |
| 1993 | 32.2 C (90.0 F) |
| 1994 | 43.3 C (109.9 F) |
| 1995 | 35.0 C (95.0 F) |
| 1996 | 38.9 C (102.0 F) |
| 1997 | 37.8 C (100.0 F) |
| 1998 | 38.9 C (102.0 F) |
| 1999 | 39.4 C (102.9 F) |
| 2000 | 39.4 C (102.9 F) |
| 2001 | 40.0 C (104.0 F) |
| 2002 | 42.2 C (108.0 F) |
| 2003 | 43.3 C (109.9 F) |
| 2004 | 38.9 C (102.0 F) |
| 2005 | 37.8 C (100.0 F) |
| 2006 | 38.3 C (100.9 F) |
| 2007 | 39.4 C (102.9 F) |
| 2008 | 38.9 C (102.0 F) |
| 2009 | 36.1 C (97.0 F) |
| 2010 | 35.6 C (96.1 F) |
| 2011 | 36.1 C (97.0 F) |
| 2012 | 36.1 C (97.0 F) |
| 2013 | 38.3 C (100.9 F) |
| 2014 | 38.3 C (100.9 F) |
| 2015 | 41.7 C (107.1 F) |
| 2016 | 36.1 C (97.0 F) |
| 2017 | 35.6 C (96.1 F) |
| 2018 | 41.1 C (106.0 F) |
| 2019 | 38.9 C (102.0 F) |
| 2020 | 40.0 C (104.0 F) |
| 2021 | 42.8 C (109.0 F) |
| 2022 | 19.4 C (66.9 F) |
| 2023 | 14.4 C (57.9 F) |
| 2024 | 40.6 C (105.1 F) |
| 2025 | 15.6 C (60.1 F) |
| 2026 | 37.8 C (100.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1960 | -14.4 C (6.1 F) |
| 1961 | -24.4 C (-11.9 F) |
| 1962 | -31.1 C (-24.0 F) |
| 1963 | -29.4 C (-20.9 F) |
| 1964 | -32.2 C (-26.0 F) |
| 1965 | -18.9 C (-2.0 F) |
| 1966 | -21.7 C (-7.1 F) |
| 1967 | -16.7 C (1.9 F) |
| 1968 | -37.2 C (-35.0 F) |
| 1969 | -26.1 C (-15.0 F) |
| 1970 | -22.8 C (-9.0 F) |
| 1971 | -21.7 C (-7.1 F) |
| 1972 | -26.7 C (-16.1 F) |
| 1973 | -25.0 C (-13.0 F) |
| 1974 | -25.0 C (-13.0 F) |
| 1975 | -20.6 C (-5.1 F) |
| 1976 | -22.2 C (-8.0 F) |
| 1977 | -17.8 C (0.0 F) |
| 1978 | -27.8 C (-18.0 F) |
| 1979 | -30.6 C (-23.1 F) |
| 1980 | -27.2 C (-17.0 F) |
| 1981 | -23.9 C (-11.0 F) |
| 1982 | -24.4 C (-11.9 F) |
| 1983 | -26.7 C (-16.1 F) |
| 1984 | -19.4 C (-2.9 F) |
| 1985 | -27.8 C (-18.0 F) |
| 1986 | -20.6 C (-5.1 F) |
| 1987 | -17.8 C (0.0 F) |
| 1988 | -18.9 C (-2.0 F) |
| 1989 | -28.9 C (-20.0 F) |
| 1990 | -26.1 C (-15.0 F) |
| 1991 | -24.4 C (-11.9 F) |
| 1992 | -17.8 C (0.0 F) |
| 1993 | -27.2 C (-17.0 F) |
| 1994 | -20.6 C (-5.1 F) |
| 1995 | -18.9 C (-2.0 F) |
| 1996 | -29.4 C (-20.9 F) |
| 1997 | -22.8 C (-9.0 F) |
| 1998 | -25.0 C (-13.0 F) |
| 1999 | -12.2 C (10.0 F) |
| 2000 | -16.7 C (1.9 F) |
| 2001 | -17.8 C (0.0 F) |
| 2002 | -20.6 C (-5.1 F) |
| 2003 | -20.6 C (-5.1 F) |
| 2004 | -33.3 C (-27.9 F) |
| 2005 | -25.0 C (-13.0 F) |
| 2006 | -20.0 C (-4.0 F) |
| 2007 | -21.7 C (-7.1 F) |
| 2008 | -26.1 C (-15.0 F) |
| 2009 | -23.9 C (-11.0 F) |
| 2010 | -15.0 C (5.0 F) |
| 2011 | -8.9 C (16.0 F) |
| 2012 | -11.1 C (12.0 F) |
| 2013 | -16.7 C (1.9 F) |
| 2014 | -21.1 C (-6.0 F) |
| 2015 | -12.8 C (9.0 F) |
| 2016 | -18.9 C (-2.0 F) |
| 2017 | -20.6 C (-5.1 F) |
| 2018 | -19.4 C (-2.9 F) |
| 2019 | -20.0 C (-4.0 F) |
| 2020 | -15.6 C (3.9 F) |
| 2021 | -25.0 C (-13.0 F) |
| 2022 | -21.7 C (-7.1 F) |
| 2023 | -7.2 C (19.0 F) |
| 2024 | -3.3 C (26.1 F) |
| 2025 | -21.7 C (-7.1 F) |
| 2026 | -3.3 C (26.1 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1960 | 43.2 mm (1.7 in) |
| 1961 | 33.0 mm (1.3 in) |
| 1962 | 43.2 mm (1.7 in) |
| 1963 | 22.4 mm (0.9 in) |
| 1964 | 53.1 mm (2.1 in) |
| 1965 | 31.0 mm (1.2 in) |
| 1966 | 31.8 mm (1.3 in) |
| 1967 | 37.3 mm (1.5 in) |
| 1968 | 24.1 mm (0.9 in) |
| 1969 | 53.1 mm (2.1 in) |
| 1970 | 44.7 mm (1.8 in) |
| 1971 | 25.4 mm (1.0 in) |
| 1972 | 24.1 mm (0.9 in) |
| 1973 | 29.5 mm (1.2 in) |
| 1974 | 38.1 mm (1.5 in) |
| 1975 | 47.5 mm (1.9 in) |
| 1976 | 30.2 mm (1.2 in) |
| 1977 | 34.3 mm (1.4 in) |
| 1978 | 27.2 mm (1.1 in) |
| 1979 | 27.2 mm (1.1 in) |
| 1980 | 50.0 mm (2.0 in) |
| 1981 | 27.2 mm (1.1 in) |
| 1982 | 23.6 mm (0.9 in) |
| 1983 | 33.3 mm (1.3 in) |
| 1984 | 33.0 mm (1.3 in) |
| 1985 | 26.9 mm (1.1 in) |
| 1986 | 46.7 mm (1.8 in) |
| 1987 | 23.6 mm (0.9 in) |
| 1988 | 27.2 mm (1.1 in) |
| 1989 | 22.9 mm (0.9 in) |
| 1990 | 46.0 mm (1.8 in) |
| 1991 | 31.8 mm (1.3 in) |
| 1992 | 24.1 mm (0.9 in) |
| 1993 | 18.0 mm (0.7 in) |
| 1994 | 27.2 mm (1.1 in) |
| 1995 | 34.8 mm (1.4 in) |
| 1996 | 38.9 mm (1.5 in) |
| 1997 | 50.0 mm (2.0 in) |
| 1998 | 84.8 mm (3.3 in) |
| 1999 | 44.5 mm (1.8 in) |
| 2000 | 26.2 mm (1.0 in) |
| 2001 | 21.6 mm (0.9 in) |
| 2002 | 28.4 mm (1.1 in) |
| 2003 | 30.0 mm (1.2 in) |
| 2004 | 30.7 mm (1.2 in) |
| 2005 | 32.8 mm (1.3 in) |
| 2006 | 40.4 mm (1.6 in) |
| 2007 | 20.8 mm (0.8 in) |
| 2008 | 20.3 mm (0.8 in) |
| 2009 | 37.3 mm (1.5 in) |
| 2010 | 30.5 mm (1.2 in) |
| 2011 | 29.7 mm (1.2 in) |
| 2012 | 34.8 mm (1.4 in) |
| 2013 | 40.6 mm (1.6 in) |
| 2014 | 18.0 mm (0.7 in) |
| 2015 | 63.2 mm (2.5 in) |
| 2016 | 44.2 mm (1.7 in) |
| 2017 | 21.3 mm (0.8 in) |
| 2018 | 27.4 mm (1.1 in) |
| 2019 | 15.5 mm (0.6 in) |
| 2020 | 23.6 mm (0.9 in) |
| 2021 | 36.8 mm (1.4 in) |
| 2022 | 43.4 mm (1.7 in) |
| 2023 | 0.0 mm (0.00 in) |
| 2024 | 25.1 mm (1.0 in) |
| 2025 | 26.7 mm (1.1 in) |
| 2026 | 2.5 mm (0.10 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1960 | 88.9 mm (3.5 in) |
| 1961 | 61.0 mm (2.4 in) |
| 1962 | 58.7 mm (2.3 in) |
| 1963 | 52.8 mm (2.1 in) |
| 1964 | 44.0 mm (1.7 in) |
| 1965 | 55.9 mm (2.2 in) |
| 1966 | 43.5 mm (1.7 in) |
| 1967 | 46.3 mm (1.8 in) |
| 1968 | 54.1 mm (2.1 in) |
| 1969 | 63.8 mm (2.5 in) |
| 1970 | 51.5 mm (2.0 in) |
| 1971 | 57.7 mm (2.3 in) |
| 1972 | 57.9 mm (2.3 in) |
| 1973 | 55.0 mm (2.2 in) |
| 1974 | 103.6 mm (4.1 in) |
| 1975 | 84.5 mm (3.3 in) |
| 1976 | 42.9 mm (1.7 in) |
| 1977 | 39.1 mm (1.5 in) |
| 1978 | 42.1 mm (1.7 in) |
| 1979 | 66.8 mm (2.6 in) |
| 1980 | 95.0 mm (3.7 in) |
| 1981 | 57.4 mm (2.3 in) |
| 1982 | 70.2 mm (2.8 in) |
| 1983 | 58.7 mm (2.3 in) |
| 1984 | 58.2 mm (2.3 in) |
| 1985 | 64.3 mm (2.5 in) |
| 1986 | 77.5 mm (3.1 in) |
| 1987 | 41.4 mm (1.6 in) |
| 1988 | 55.7 mm (2.2 in) |
| 1989 | 63.4 mm (2.5 in) |
| 1990 | 90.2 mm (3.6 in) |
| 1991 | 59.5 mm (2.3 in) |
| 1992 | 40.1 mm (1.6 in) |
| 1993 | 32.5 mm (1.3 in) |
| 1994 | 56.4 mm (2.2 in) |
| 1995 | 71.9 mm (2.8 in) |
| 1996 | 101.3 mm (4.0 in) |
| 1997 | 70.4 mm (2.8 in) |
| 1998 | 107.2 mm (4.2 in) |
| 1999 | 63.3 mm (2.5 in) |
| 2000 | 38.2 mm (1.5 in) |
| 2001 | 42.7 mm (1.7 in) |
| 2002 | 57.8 mm (2.3 in) |
| 2003 | 42.7 mm (1.7 in) |
| 2004 | 61.1 mm (2.4 in) |
| 2005 | 53.4 mm (2.1 in) |
| 2006 | 67.7 mm (2.7 in) |
| 2007 | 29.4 mm (1.2 in) |
| 2008 | 31.2 mm (1.2 in) |
| 2009 | 70.8 mm (2.8 in) |
| 2010 | 71.1 mm (2.8 in) |
| 2011 | 73.1 mm (2.9 in) |
| 2012 | 80.0 mm (3.1 in) |
| 2013 | 62.0 mm (2.4 in) |
| 2014 | 34.3 mm (1.4 in) |
| 2015 | 64.5 mm (2.5 in) |
| 2016 | 49.8 mm (2.0 in) |
| 2017 | 35.0 mm (1.4 in) |
| 2018 | 34.2 mm (1.3 in) |
| 2019 | 32.3 mm (1.3 in) |
| 2020 | 36.1 mm (1.4 in) |
| 2021 | 45.2 mm (1.8 in) |
| 2022 | 67.0 mm (2.6 in) |
| 2023 | n/a |
| 2024 | 37.6 mm (1.5 in) |
| 2025 | 40.2 mm (1.6 in) |
| 2026 | 0.0 mm (0.00 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1960 | 14 days |
| 1961 | 24 days |
| 1962 | 18 days |
| 1963 | 29 days |
| 1964 | 13 days |
| 1965 | 20 days |
| 1966 | 31 days |
| 1967 | 56 days |
| 1968 | 22 days |
| 1969 | 74 days |
| 1970 | 28 days |
| 1971 | 41 days |
| 1972 | 17 days |
| 1973 | 41 days |
| 1974 | 31 days |
| 1975 | 18 days |
| 1976 | 22 days |
| 1977 | 20 days |
| 1978 | 30 days |
| 1979 | 16 days |
| 1980 | 23 days |
| 1981 | 30 days |
| 1982 | 17 days |
| 1983 | 16 days |
| 1984 | 35 days |
| 1985 | 32 days |
| 1986 | 24 days |
| 1987 | 32 days |
| 1988 | 18 days |
| 1989 | 24 days |
| 1990 | 38 days |
| 1991 | 23 days |
| 1992 | 22 days |
| 1993 | 21 days |
| 1994 | 40 days |
| 1995 | 15 days |
| 1996 | 26 days |
| 1997 | 21 days |
| 1998 | 15 days |
| 1999 | 23 days |
| 2000 | 58 days |
| 2001 | 58 days |
| 2002 | 35 days |
| 2003 | 55 days |
| 2004 | 18 days |
| 2005 | 39 days |
| 2006 | 31 days |
| 2007 | 31 days |
| 2008 | 40 days |
| 2009 | 19 days |
| 2010 | 24 days |
| 2011 | 31 days |
| 2012 | 34 days |
| 2013 | 23 days |
| 2014 | 21 days |
| 2015 | 33 days |
| 2016 | 23 days |
| 2017 | 47 days |
| 2018 | 54 days |
| 2019 | 20 days |
| 2020 | 54 days |
| 2021 | 22 days |
| 2022 | 10 days |
| 2023 | 2 days |
| 2024 | 25 days |
| 2025 | 20 days |
| 2026 | 9 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
34 years with a frostAcross 34 years with a frost, the median last spring frost at Troy falls on 20 May and the median first autumn frost on 13 September, which leaves a median of 120 days between them.
Fitted over all years, the growing season changes by +6.3 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1965 to 2021) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 20 May | n/a | 19 May | n/a | -4.0 days per decade |
| First autumn frost | 13 September | n/a | 15 September | n/a | +2.4 days per decade |
| Growing days | 120 days | n/a | 120 days | n/a | +6.3 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
32 years, 1961 to 2012A day with at least 31.8 mm (1.3 in) of rain is expected about once in 2 years. A day with at least 65.7 mm (2.6 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 31.8 mm (1.3 in) | |
| 5 years | 40.4 mm (1.6 in) | |
| 10 years | 46.2 mm (1.8 in) | |
| 25 years | 53.9 mm (2.1 in) | |
| 50 years | 59.8 mm (2.4 in) | Longer than the 32 years of record |
| 100 years | 65.7 mm (2.6 in) | Longer than the 32 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, 32 years of values from 1961 to 2012.
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: 53.1 mm (2.1 in) in 1964; 53.1 mm (2.1 in) in 1969; 50.0 mm (2.0 in) in 1980.
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).