Tionesta 2 SE Lake Weather Records (USC00368873)
Record envelope, standing records and threshold days for Tionesta 2 SE Lake (USC00368873), Pennsylvania, United States, with 106 years of record.
Key Facts for Tionesta 2 SE Lake
- Tionesta 2 SE Lake (USC00368873) is a weather station in Pennsylvania, United States at 41.48 latitude and -79.44 longitude, 366 m (1,200 ft) above sea level.
- The station reports from 1921 to 2026, 106 years of record.
- 1,464 records set at Tionesta 2 SE Lake still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Tionesta 2 SE Lake tied a daily record high minimum temperature of 20.6 C (69.1 F) on 3 July 2026.
About the Station
- Location: Pennsylvania, United States, 41.48 latitude, -79.44 longitude.
- Elevation: 366 m (1,200 ft).
- Period of record: 1921 to 2026, 106 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
7 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) | -33.3 C (-27.9 F) | 17.2 C (63.0 F) | -22.2 C (-8.0 F) |
| Feb | 23.9 C (75.0 F) | -32.8 C (-27.0 F) | 15.6 C (60.1 F) | -23.9 C (-11.0 F) |
| Mar | 28.9 C (84.0 F) | -25.6 C (-14.1 F) | 25.6 C (78.1 F) | -10.0 C (14.0 F) |
| Apr | 31.7 C (89.1 F) | -19.4 C (-2.9 F) | 28.3 C (82.9 F) | -6.1 C (21.0 F) |
| May | 34.4 C (93.9 F) | -6.1 C (21.0 F) | 31.7 C (89.1 F) | -1.1 C (30.0 F) |
| Jun | 36.1 C (97.0 F) | -1.7 C (28.9 F) | 31.1 C (88.0 F) | 4.4 C (39.9 F) |
| Jul | 38.9 C (102.0 F) | 3.9 C (39.0 F) | 33.9 C (93.0 F) | 8.9 C (48.0 F) |
| Aug | 37.2 C (99.0 F) | 1.1 C (34.0 F) | 31.1 C (88.0 F) | 10.6 C (51.1 F) |
| Sep | 36.1 C (97.0 F) | -4.4 C (24.1 F) | 31.1 C (88.0 F) | 5.0 C (41.0 F) |
| Oct | 31.1 C (88.0 F) | -11.7 C (10.9 F) | 27.8 C (82.0 F) | 2.2 C (36.0 F) |
| Nov | 26.7 C (80.1 F) | -17.8 C (0.0 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 |
|---|---|
| 1921 | 10 |
| 1922 | 19 |
| 1923 | 30 |
| 1927 | 4 |
| 1928 | 3 |
| 1943 | 2 |
| 1944 | 18 |
| 1945 | 18 |
| 1946 | 15 |
| 1947 | 25 |
| 1948 | 21 |
| 1949 | 17 |
| 1950 | 38 |
| 1951 | 18 |
| 1952 | 19 |
| 1953 | 12 |
| 1954 | 22 |
| 1955 | 13 |
| 1956 | 16 |
| 1957 | 16 |
| 1958 | 21 |
| 1959 | 17 |
| 1960 | 18 |
| 1961 | 16 |
| 1962 | 16 |
| 1963 | 30 |
| 1964 | 20 |
| 1965 | 20 |
| 1966 | 19 |
| 1967 | 25 |
| 1968 | 15 |
| 1969 | 12 |
| 1970 | 24 |
| 1971 | 10 |
| 1972 | 19 |
| 1973 | 17 |
| 1974 | 12 |
| 1975 | 9 |
| 1976 | 28 |
| 1977 | 20 |
| 1978 | 10 |
| 1979 | 22 |
| 1980 | 7 |
| 1981 | 13 |
| 1982 | 21 |
| 1983 | 9 |
| 1984 | 18 |
| 1985 | 9 |
| 1986 | 12 |
| 1987 | 2 |
| 1988 | 16 |
| 1989 | 22 |
| 1990 | 22 |
| 1991 | 20 |
| 1992 | 13 |
| 1993 | 10 |
| 1994 | 13 |
| 1995 | 12 |
| 1996 | 17 |
| 1997 | 9 |
| 1998 | 23 |
| 1999 | 13 |
| 2000 | 16 |
| 2001 | 20 |
| 2002 | 17 |
| 2003 | 6 |
| 2004 | 8 |
| 2005 | 9 |
| 2006 | 15 |
| 2007 | 14 |
| 2008 | 11 |
| 2009 | 10 |
| 2010 | 15 |
| 2011 | 23 |
| 2012 | 41 |
| 2013 | 25 |
| 2014 | 15 |
| 2015 | 27 |
| 2016 | 22 |
| 2017 | 26 |
| 2018 | 29 |
| 2019 | 14 |
| 2020 | 16 |
| 2021 | 14 |
| 2022 | 9 |
| 2023 | 13 |
| 2024 | 11 |
| 2025 | 7 |
| 2026 | 14 |
All-Time Record Progression
5 new records| Date | Kind | Detail |
|---|---|---|
| 1977-01-18 | Record low maximum temperature | Record low maximum temperature -19.4 C (-2.9 F) |
| 1989-07-27 | Record high maximum temperature | Record high maximum temperature 37.2 C (99.0 F) |
| 2011-07-22 | Record high maximum temperature | Record high maximum temperature 37.8 C (100.0 F) |
| 2011-07-22 | Record high minimum temperature | Record high minimum temperature 23.3 C (73.9 F) |
| 2011-07-23 | Record high maximum temperature | Record high maximum temperature 38.9 C (102.0 F) |
Wettest Day of Each Month
Aug: 119.9 mm (4.7 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 48.5 mm (1.9 in) | 8 January 1998 |
| Feb | 48.3 mm (1.9 in) | 22 February 2021 |
| Mar | 57.4 mm (2.3 in) | 24 March 1953 |
| Apr | 70.6 mm (2.8 in) | 12 April 2024 |
| May | 76.7 mm (3.0 in) | 21 May 2004 |
| Jun | 74.2 mm (2.9 in) | 9 June 1981 |
| Jul | 98.0 mm (3.9 in) | 22 July 2003 |
| Aug | 119.9 mm (4.7 in) | 14 August 1994 |
| Sep | 110.2 mm (4.3 in) | 9 September 2004 |
| Oct | 119.9 mm (4.7 in) | 16 October 1954 |
| Nov | 67.1 mm (2.6 in) | 12 November 2022 |
| Dec | 70.9 mm (2.8 in) | 1 December 2010 |
Period of Record Coverage
1921 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1921 | 238 | 65% | No |
| 1922 | 232 | 64% | No |
| 1923 | 239 | 65% | No |
| 1927 | 31 | 8% | No |
| 1928 | 59 | 16% | No |
| 1943 | 79 | 22% | No |
| 1944 | 348 | 95% | Yes |
| 1945 | 325 | 89% | No |
| 1946 | 330 | 90% | Yes |
| 1947 | 311 | 85% | No |
| 1948 | 332 | 91% | Yes |
| 1949 | 363 | 99% | Yes |
| 1950 | 364 | 100% | Yes |
| 1951 | 364 | 100% | Yes |
| 1952 | 360 | 98% | Yes |
| 1953 | 362 | 99% | Yes |
| 1954 | 362 | 99% | Yes |
| 1955 | 363 | 99% | Yes |
| 1956 | 366 | 100% | Yes |
| 1957 | 364 | 100% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 364 | 100% | Yes |
| 1960 | 365 | 100% | Yes |
| 1961 | 365 | 100% | Yes |
| 1962 | 365 | 100% | Yes |
| 1963 | 365 | 100% | Yes |
| 1964 | 366 | 100% | Yes |
| 1965 | 365 | 100% | Yes |
| 1966 | 335 | 92% | Yes |
| 1967 | 332 | 91% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 334 | 92% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 365 | 100% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 365 | 100% | Yes |
| 1976 | 365 | 100% | Yes |
| 1977 | 363 | 99% | Yes |
| 1978 | 363 | 99% | Yes |
| 1979 | 365 | 100% | Yes |
| 1980 | 362 | 99% | Yes |
| 1981 | 365 | 100% | Yes |
| 1982 | 361 | 99% | Yes |
| 1983 | 361 | 99% | Yes |
| 1984 | 364 | 99% | Yes |
| 1985 | 363 | 99% | Yes |
| 1986 | 245 | 67% | No |
| 1987 | 121 | 33% | No |
| 1988 | 241 | 66% | No |
| 1989 | 300 | 82% | No |
| 1990 | 240 | 66% | No |
| 1991 | 268 | 73% | No |
| 1992 | 331 | 90% | Yes |
| 1993 | 354 | 97% | Yes |
| 1994 | 362 | 99% | Yes |
| 1995 | 353 | 97% | Yes |
| 1996 | 362 | 99% | Yes |
| 1997 | 364 | 100% | Yes |
| 1998 | 361 | 99% | Yes |
| 1999 | 359 | 98% | Yes |
| 2000 | 333 | 91% | Yes |
| 2001 | 330 | 90% | Yes |
| 2002 | 359 | 98% | Yes |
| 2003 | 359 | 98% | Yes |
| 2004 | 361 | 99% | Yes |
| 2005 | 359 | 98% | Yes |
| 2006 | 364 | 100% | Yes |
| 2007 | 363 | 99% | Yes |
| 2008 | 360 | 98% | Yes |
| 2009 | 361 | 99% | Yes |
| 2010 | 363 | 99% | Yes |
| 2011 | 359 | 98% | Yes |
| 2012 | 360 | 98% | Yes |
| 2013 | 365 | 100% | Yes |
| 2014 | 356 | 98% | Yes |
| 2015 | 352 | 96% | Yes |
| 2016 | 355 | 97% | Yes |
| 2017 | 357 | 98% | Yes |
| 2018 | 347 | 95% | Yes |
| 2019 | 347 | 95% | Yes |
| 2020 | 337 | 92% | Yes |
| 2021 | 357 | 98% | Yes |
| 2022 | 354 | 97% | Yes |
| 2023 | 361 | 99% | Yes |
| 2024 | 365 | 100% | Yes |
| 2025 | 358 | 98% | Yes |
| 2026 | 278 | 76% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 3 July 2026 | Tionesta 2 SE Lake, US | daily high min (Tie) | 20.6 C (69.1 F) | tie | 8 years | 3 of 100 (Routine) |
| 2 July 2026 | Tionesta 2 SE Lake, US | daily high min | 21.1 C (70.0 F) | 0.5 C (0.9 F) | 12 years | 14 of 100 (Routine) |
| 1 July 2026 | Tionesta 2 SE Lake, US | daily high max | 33.3 C (91.9 F) | 0.5 C (0.9 F) | 61 years | 29 of 100 (Routine) |
| 12 June 2026 | Tionesta 2 SE Lake, US | daily high min (Tie) | 19.4 C (66.9 F) | tie | 20 years | 4 of 100 (Routine) |
| 24 May 2026 | Tionesta 2 SE Lake, US | daily low max (Tie) | 11.1 C (52.0 F) | tie | 0 years | 2 of 100 (Routine) |
| 15 May 2026 | Tionesta 2 SE Lake, US | daily low max | 8.9 C (48.0 F) | 1.1 C (2.0 F) | 67 years | 31 of 100 (Routine) |
| 17 April 2026 | Tionesta 2 SE Lake, US | daily high min | 12.8 C (55.0 F) | 2.8 C (5.0 F) | 80 years | 39 of 100 (Notable) |
| 16 April 2026 | Tionesta 2 SE Lake, US | monthly high min | 15.6 C (60.1 F) | 1.2 C (2.2 F) | 104 years | 52 of 100 (Notable) |
| 5 April 2026 | Tionesta 2 SE Lake, US | daily high max | 28.3 C (82.9 F) | 3.3 C (5.9 F) | 3 years | 14 of 100 (Routine) |
| 4 April 2026 | Tionesta 2 SE Lake, US | daily high min | 11.7 C (53.1 F) | 2.8 C (5.0 F) | 76 years | 37 of 100 (Notable) |
| 1 April 2026 | Tionesta 2 SE Lake, US | daily high min | 12.8 C (55.0 F) | 0.6 C (1.1 F) | 9 years | 13 of 100 (Routine) |
| 27 March 2026 | Tionesta 2 SE Lake, US | daily high max | 25.0 C (77.0 F) | 0.6 C (1.1 F) | 19 years | 15 of 100 (Routine) |
| 12 March 2026 | Tionesta 2 SE Lake, US | daily high max (Tie) | 23.3 C (73.9 F) | tie | 16 years | 3 of 100 (Routine) |
| 11 March 2026 | Tionesta 2 SE Lake, US | daily high max | 23.3 C (73.9 F) | 2.2 C (4.0 F) | 12 years | 16 of 100 (Routine) |
| 8 March 2026 | Tionesta 2 SE Lake, US | daily high min | 8.9 C (48.0 F) | 2.8 C (5.0 F) | 43 years | 26 of 100 (Routine) |
| 8 March 2026 | Tionesta 2 SE Lake, US | daily high max | 25.6 C (78.1 F) | 2.8 C (5.0 F) | 43 years | 25 of 100 (Routine) |
| 7 March 2026 | Tionesta 2 SE Lake, US | daily high min | 7.2 C (45.0 F) | 0.5 C (0.9 F) | 43 years | 22 of 100 (Routine) |
| 26 January 2026 | Tionesta 2 SE Lake, US | daily snowfall | 23.4 cm (9.2 in) | 10.7 cm (4.2 in) | 51 years | 51 of 100 (Notable) |
| 26 January 2026 | Tionesta 2 SE Lake, US | daily rain | 22.4 mm (0.9 in) | 4.1 mm (0.16 in) | 74 years | 20 of 100 (Routine) |
| 10 January 2026 | Tionesta 2 SE Lake, US | daily high max | 17.2 C (63.0 F) | 2.8 C (5.0 F) | 76 years | 37 of 100 (Notable) |
Climate Trend
65 complete years, 1944 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1944 | 8.9 C | +0.12 C |
| 1945 | 8.4 C | -0.35 C |
| 1946 | 9.2 C | +0.45 C |
| 1947 | 8.4 C | -0.35 C |
| 1949 | 9.2 C | +0.42 C |
| 1950 | 7.5 C | -1.29 C |
| 1951 | 8.2 C | -0.56 C |
| 1952 | 8.7 C | -0.07 C |
| 1953 | 9.4 C | +0.60 C |
| 1954 | 8.8 C | -0.01 C |
| 1955 | 8.8 C | -0.01 C |
| 1956 | 8.2 C | -0.62 C |
| 1957 | 8.5 C | -0.31 C |
| 1958 | 6.9 C | -1.85 C |
| 1959 | 8.8 C | -0.01 C |
| 1960 | 7.6 C | -1.15 C |
| 1961 | 8.1 C | -0.69 C |
| 1962 | 7.5 C | -1.26 C |
| 1963 | 7.0 C | -1.80 C |
| 1964 | 7.9 C | -0.84 C |
| 1965 | 7.9 C | -0.92 C |
| 1968 | 7.2 C | -1.56 C |
| 1969 | 7.0 C | -1.83 C |
| 1970 | 7.7 C | -1.06 C |
| 1972 | 7.7 C | -1.10 C |
| 1973 | 9.3 C | +0.49 C |
| 1974 | 8.1 C | -0.72 C |
| 1975 | 8.6 C | -0.14 C |
| 1976 | 7.4 C | -1.38 C |
| 1977 | 8.1 C | -0.72 C |
| 1978 | 7.4 C | -1.43 C |
| 1979 | 7.9 C | -0.89 C |
| 1981 | 7.6 C | -1.15 C |
| 1983 | 8.4 C | -0.35 C |
| 1984 | 8.0 C | -0.79 C |
| 1985 | 8.0 C | -0.75 C |
| 1995 | 8.8 C | +0.04 C |
| 1996 | 8.0 C | -0.75 C |
| 1997 | 8.1 C | -0.68 C |
| 1998 | 10.6 C | +1.83 C |
| 1999 | 9.5 C | +0.73 C |
| 2002 | 8.6 C | -0.18 C |
| 2003 | 7.9 C | -0.86 C |
| 2004 | 8.3 C | -0.49 C |
| 2005 | 8.7 C | -0.12 C |
| 2006 | 9.2 C | +0.39 C |
| 2007 | 8.5 C | -0.27 C |
| 2008 | 8.0 C | -0.79 C |
| 2009 | 8.0 C | -0.74 C |
| 2010 | 9.8 C | +0.97 C |
| 2011 | 11.1 C | +2.33 C |
| 2012 | 12.5 C | +3.74 C |
| 2013 | 10.7 C | +1.92 C |
| 2014 | 9.2 C | +0.40 C |
| 2015 | 9.5 C | +0.72 C |
| 2016 | 10.6 C | +1.83 C |
| 2017 | 10.8 C | +2.05 C |
| 2018 | 10.6 C | +1.82 C |
| 2019 | 10.5 C | +1.69 C |
| 2020 | 10.6 C | +1.81 C |
| 2021 | 10.4 C | +1.66 C |
| 2022 | 9.3 C | +0.55 C |
| 2023 | 10.3 C | +1.53 C |
| 2024 | 10.9 C | +2.14 C |
| 2025 | 9.2 C | +0.45 C |
The annual mean temperature here has risen by 0.3 C (0.2 to 0.4) per decade over 1944 to 2025. In Fahrenheit: 0.5 F (0.3 to 0.7) per decade. The slope is a straight line fitted to 65 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 (0.2 to 0.4) per decade | 0.5 F (0.3 to 0.7) per decade | 1944 to 2025 | 65 | Rise |
| Mean daily maximum | 0.2 C (0.1 to 0.2) per decade | 0.3 F (0.1 to 0.4) per decade | 1944 to 2025 | 65 | Rise |
| Mean daily minimum | 0.4 C (0.3 to 0.5) per decade | 0.7 F (0.5 to 0.9) per decade | 1944 to 2025 | 65 | 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
1921 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 38.9 C (102.0 F) | 2011 | 33.3 C (91.9 F) | 89 |
| Coldest night (TNn) | -33.3 C (-27.9 F) | 1948 | -23.9 C (-11.0 F) | 89 |
| Wettest day (Rx1day) | 119.9 mm (4.7 in) | 1954 | 52.1 mm (2.1 in) | 91 |
| Wettest five days (Rx5day) | 172.4 mm (6.8 in) | 2003 | 81.3 mm (3.2 in) | 91 |
| Longest dry spell (CDD) | 26 days | 1922 | 13 days | 91 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1921 | 35.0 C (95.0 F) |
| 1922 | 33.9 C (93.0 F) |
| 1923 | 35.6 C (96.1 F) |
| 1927 | 16.1 C (61.0 F) |
| 1928 | 14.4 C (57.9 F) |
| 1941 | n/a |
| 1942 | n/a |
| 1943 | 25.0 C (77.0 F) |
| 1944 | 35.6 C (96.1 F) |
| 1945 | 32.2 C (90.0 F) |
| 1946 | 34.4 C (93.9 F) |
| 1947 | 33.9 C (93.0 F) |
| 1948 | 34.4 C (93.9 F) |
| 1949 | 33.9 C (93.0 F) |
| 1950 | 31.7 C (89.1 F) |
| 1951 | 33.9 C (93.0 F) |
| 1952 | 36.1 C (97.0 F) |
| 1953 | 36.1 C (97.0 F) |
| 1954 | 35.0 C (95.0 F) |
| 1955 | 33.3 C (91.9 F) |
| 1956 | 35.0 C (95.0 F) |
| 1957 | 32.8 C (91.0 F) |
| 1958 | 30.0 C (86.0 F) |
| 1959 | 33.9 C (93.0 F) |
| 1960 | 31.1 C (88.0 F) |
| 1961 | 31.1 C (88.0 F) |
| 1962 | 32.8 C (91.0 F) |
| 1963 | 32.8 C (91.0 F) |
| 1964 | 32.8 C (91.0 F) |
| 1965 | 33.9 C (93.0 F) |
| 1966 | 36.1 C (97.0 F) |
| 1967 | 32.2 C (90.0 F) |
| 1968 | 32.8 C (91.0 F) |
| 1969 | 32.2 C (90.0 F) |
| 1970 | 31.1 C (88.0 F) |
| 1971 | 33.3 C (91.9 F) |
| 1972 | 32.2 C (90.0 F) |
| 1973 | 32.8 C (91.0 F) |
| 1974 | 32.2 C (90.0 F) |
| 1975 | 33.9 C (93.0 F) |
| 1976 | 30.6 C (87.1 F) |
| 1977 | 32.8 C (91.0 F) |
| 1978 | 32.2 C (90.0 F) |
| 1979 | 31.1 C (88.0 F) |
| 1980 | 35.6 C (96.1 F) |
| 1981 | 31.7 C (89.1 F) |
| 1982 | 31.7 C (89.1 F) |
| 1983 | 32.8 C (91.0 F) |
| 1984 | 31.7 C (89.1 F) |
| 1985 | 31.7 C (89.1 F) |
| 1986 | 31.7 C (89.1 F) |
| 1987 | 27.8 C (82.0 F) |
| 1988 | 36.1 C (97.0 F) |
| 1989 | 37.2 C (99.0 F) |
| 1990 | 32.2 C (90.0 F) |
| 1991 | 35.6 C (96.1 F) |
| 1992 | 31.7 C (89.1 F) |
| 1993 | 37.2 C (99.0 F) |
| 1994 | 35.0 C (95.0 F) |
| 1995 | 37.2 C (99.0 F) |
| 1996 | 34.4 C (93.9 F) |
| 1997 | 33.3 C (91.9 F) |
| 1998 | 34.4 C (93.9 F) |
| 1999 | 36.1 C (97.0 F) |
| 2000 | 32.2 C (90.0 F) |
| 2001 | 36.7 C (98.1 F) |
| 2002 | 34.4 C (93.9 F) |
| 2003 | 31.1 C (88.0 F) |
| 2004 | 31.1 C (88.0 F) |
| 2005 | 33.3 C (91.9 F) |
| 2006 | 32.8 C (91.0 F) |
| 2007 | 33.3 C (91.9 F) |
| 2008 | 32.2 C (90.0 F) |
| 2009 | 31.7 C (89.1 F) |
| 2010 | 34.4 C (93.9 F) |
| 2011 | 38.9 C (102.0 F) |
| 2012 | 35.6 C (96.1 F) |
| 2013 | 33.9 C (93.0 F) |
| 2014 | 31.7 C (89.1 F) |
| 2015 | 32.2 C (90.0 F) |
| 2016 | 32.8 C (91.0 F) |
| 2017 | 33.3 C (91.9 F) |
| 2018 | 35.0 C (95.0 F) |
| 2019 | 34.4 C (93.9 F) |
| 2020 | 35.0 C (95.0 F) |
| 2021 | 35.0 C (95.0 F) |
| 2022 | 33.3 C (91.9 F) |
| 2023 | 32.2 C (90.0 F) |
| 2024 | 33.9 C (93.0 F) |
| 2025 | 33.9 C (93.0 F) |
| 2026 | 33.9 C (93.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1921 | -7.8 C (18.0 F) |
| 1922 | -28.3 C (-18.9 F) |
| 1923 | -27.2 C (-17.0 F) |
| 1927 | -17.2 C (1.0 F) |
| 1928 | -23.9 C (-11.0 F) |
| 1941 | n/a |
| 1942 | n/a |
| 1943 | -26.1 C (-15.0 F) |
| 1944 | -30.0 C (-22.0 F) |
| 1945 | -28.3 C (-18.9 F) |
| 1946 | -24.4 C (-11.9 F) |
| 1947 | -23.3 C (-9.9 F) |
| 1948 | -33.3 C (-27.9 F) |
| 1949 | -21.1 C (-6.0 F) |
| 1950 | -28.9 C (-20.0 F) |
| 1951 | -27.8 C (-18.0 F) |
| 1952 | -21.1 C (-6.0 F) |
| 1953 | -17.2 C (1.0 F) |
| 1954 | -21.7 C (-7.1 F) |
| 1955 | -28.3 C (-18.9 F) |
| 1956 | -20.0 C (-4.0 F) |
| 1957 | -27.2 C (-17.0 F) |
| 1958 | -25.6 C (-14.1 F) |
| 1959 | -22.2 C (-8.0 F) |
| 1960 | -26.7 C (-16.1 F) |
| 1961 | -32.2 C (-26.0 F) |
| 1962 | -23.3 C (-9.9 F) |
| 1963 | -32.8 C (-27.0 F) |
| 1964 | -28.3 C (-18.9 F) |
| 1965 | -30.0 C (-22.0 F) |
| 1966 | -29.4 C (-20.9 F) |
| 1967 | -25.6 C (-14.1 F) |
| 1968 | -27.2 C (-17.0 F) |
| 1969 | -24.4 C (-11.9 F) |
| 1970 | -27.8 C (-18.0 F) |
| 1971 | -23.3 C (-9.9 F) |
| 1972 | -25.6 C (-14.1 F) |
| 1973 | -24.4 C (-11.9 F) |
| 1974 | -20.6 C (-5.1 F) |
| 1975 | -25.6 C (-14.1 F) |
| 1976 | -26.1 C (-15.0 F) |
| 1977 | -27.8 C (-18.0 F) |
| 1978 | -27.2 C (-17.0 F) |
| 1979 | -30.6 C (-23.1 F) |
| 1980 | -25.0 C (-13.0 F) |
| 1981 | -30.0 C (-22.0 F) |
| 1982 | -28.9 C (-20.0 F) |
| 1983 | -24.4 C (-11.9 F) |
| 1984 | -29.4 C (-20.9 F) |
| 1985 | -28.9 C (-20.0 F) |
| 1986 | -22.8 C (-9.0 F) |
| 1987 | -26.1 C (-15.0 F) |
| 1988 | -26.7 C (-16.1 F) |
| 1989 | -27.2 C (-17.0 F) |
| 1990 | -19.4 C (-2.9 F) |
| 1991 | -23.9 C (-11.0 F) |
| 1992 | -22.8 C (-9.0 F) |
| 1993 | -22.2 C (-8.0 F) |
| 1994 | -23.3 C (-9.9 F) |
| 1995 | -20.0 C (-4.0 F) |
| 1996 | -23.3 C (-9.9 F) |
| 1997 | -27.2 C (-17.0 F) |
| 1998 | -16.1 C (3.0 F) |
| 1999 | -23.3 C (-9.9 F) |
| 2000 | -20.6 C (-5.1 F) |
| 2001 | -17.8 C (0.0 F) |
| 2002 | -19.4 C (-2.9 F) |
| 2003 | -24.4 C (-11.9 F) |
| 2004 | -24.4 C (-11.9 F) |
| 2005 | -25.0 C (-13.0 F) |
| 2006 | -16.7 C (1.9 F) |
| 2007 | -21.7 C (-7.1 F) |
| 2008 | -20.6 C (-5.1 F) |
| 2009 | -26.7 C (-16.1 F) |
| 2010 | -22.8 C (-9.0 F) |
| 2011 | -20.0 C (-4.0 F) |
| 2012 | -13.3 C (8.1 F) |
| 2013 | -15.0 C (5.0 F) |
| 2014 | -22.8 C (-9.0 F) |
| 2015 | -25.6 C (-14.1 F) |
| 2016 | -18.3 C (-0.9 F) |
| 2017 | -18.3 C (-0.9 F) |
| 2018 | -20.6 C (-5.1 F) |
| 2019 | -22.8 C (-9.0 F) |
| 2020 | -16.1 C (3.0 F) |
| 2021 | -16.7 C (1.9 F) |
| 2022 | -22.8 C (-9.0 F) |
| 2023 | -16.1 C (3.0 F) |
| 2024 | -17.8 C (0.0 F) |
| 2025 | -22.8 C (-9.0 F) |
| 2026 | -23.9 C (-11.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1921 | 45.7 mm (1.8 in) |
| 1922 | 45.7 mm (1.8 in) |
| 1923 | 48.3 mm (1.9 in) |
| 1927 | 25.4 mm (1.0 in) |
| 1928 | 10.2 mm (0.4 in) |
| 1941 | 65.3 mm (2.6 in) |
| 1942 | 55.1 mm (2.2 in) |
| 1943 | 54.1 mm (2.1 in) |
| 1944 | 37.1 mm (1.5 in) |
| 1945 | 53.3 mm (2.1 in) |
| 1946 | 58.2 mm (2.3 in) |
| 1947 | 41.4 mm (1.6 in) |
| 1948 | 56.1 mm (2.2 in) |
| 1949 | 58.2 mm (2.3 in) |
| 1950 | 46.0 mm (1.8 in) |
| 1951 | 42.7 mm (1.7 in) |
| 1952 | 47.5 mm (1.9 in) |
| 1953 | 68.3 mm (2.7 in) |
| 1954 | 119.9 mm (4.7 in) |
| 1955 | 43.9 mm (1.7 in) |
| 1956 | 77.0 mm (3.0 in) |
| 1957 | 64.8 mm (2.6 in) |
| 1958 | 66.8 mm (2.6 in) |
| 1959 | 53.6 mm (2.1 in) |
| 1960 | 41.1 mm (1.6 in) |
| 1961 | 54.1 mm (2.1 in) |
| 1962 | 52.3 mm (2.1 in) |
| 1963 | 37.8 mm (1.5 in) |
| 1964 | 75.2 mm (3.0 in) |
| 1965 | 43.9 mm (1.7 in) |
| 1966 | 43.2 mm (1.7 in) |
| 1967 | 57.2 mm (2.3 in) |
| 1968 | 54.1 mm (2.1 in) |
| 1969 | 52.6 mm (2.1 in) |
| 1970 | 38.9 mm (1.5 in) |
| 1971 | 32.0 mm (1.3 in) |
| 1972 | 68.3 mm (2.7 in) |
| 1973 | 91.9 mm (3.6 in) |
| 1974 | 69.6 mm (2.7 in) |
| 1975 | 78.0 mm (3.1 in) |
| 1976 | 42.7 mm (1.7 in) |
| 1977 | 73.9 mm (2.9 in) |
| 1978 | 43.7 mm (1.7 in) |
| 1979 | 33.8 mm (1.3 in) |
| 1980 | 52.1 mm (2.1 in) |
| 1981 | 74.2 mm (2.9 in) |
| 1982 | 35.6 mm (1.4 in) |
| 1983 | 32.0 mm (1.3 in) |
| 1984 | 41.1 mm (1.6 in) |
| 1985 | 41.7 mm (1.6 in) |
| 1986 | 39.4 mm (1.6 in) |
| 1987 | 44.2 mm (1.7 in) |
| 1988 | 36.3 mm (1.4 in) |
| 1989 | 51.3 mm (2.0 in) |
| 1990 | 41.1 mm (1.6 in) |
| 1991 | 50.8 mm (2.0 in) |
| 1992 | 75.2 mm (3.0 in) |
| 1993 | 45.7 mm (1.8 in) |
| 1994 | 119.9 mm (4.7 in) |
| 1995 | 41.9 mm (1.6 in) |
| 1996 | 66.0 mm (2.6 in) |
| 1997 | 39.1 mm (1.5 in) |
| 1998 | 55.9 mm (2.2 in) |
| 1999 | 61.5 mm (2.4 in) |
| 2000 | 56.1 mm (2.2 in) |
| 2001 | 47.2 mm (1.9 in) |
| 2002 | 44.7 mm (1.8 in) |
| 2003 | 98.0 mm (3.9 in) |
| 2004 | 110.2 mm (4.3 in) |
| 2005 | 51.3 mm (2.0 in) |
| 2006 | 61.7 mm (2.4 in) |
| 2007 | 38.1 mm (1.5 in) |
| 2008 | 34.5 mm (1.4 in) |
| 2009 | 54.6 mm (2.1 in) |
| 2010 | 70.9 mm (2.8 in) |
| 2011 | 49.5 mm (1.9 in) |
| 2012 | 48.5 mm (1.9 in) |
| 2013 | 67.3 mm (2.6 in) |
| 2014 | 58.2 mm (2.3 in) |
| 2015 | 58.4 mm (2.3 in) |
| 2016 | 58.9 mm (2.3 in) |
| 2017 | 61.0 mm (2.4 in) |
| 2018 | 59.2 mm (2.3 in) |
| 2019 | 40.6 mm (1.6 in) |
| 2020 | 37.8 mm (1.5 in) |
| 2021 | 53.6 mm (2.1 in) |
| 2022 | 67.1 mm (2.6 in) |
| 2023 | 43.7 mm (1.7 in) |
| 2024 | 70.6 mm (2.8 in) |
| 2025 | 42.4 mm (1.7 in) |
| 2026 | 47.0 mm (1.9 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1921 | 98.2 mm (3.9 in) |
| 1922 | 58.4 mm (2.3 in) |
| 1923 | 68.4 mm (2.7 in) |
| 1927 | 61.0 mm (2.4 in) |
| 1928 | 17.8 mm (0.7 in) |
| 1941 | 82.8 mm (3.3 in) |
| 1942 | 98.0 mm (3.9 in) |
| 1943 | 98.5 mm (3.9 in) |
| 1944 | 74.9 mm (2.9 in) |
| 1945 | 77.5 mm (3.1 in) |
| 1946 | 105.2 mm (4.1 in) |
| 1947 | 59.9 mm (2.4 in) |
| 1948 | 93.5 mm (3.7 in) |
| 1949 | 105.9 mm (4.2 in) |
| 1950 | 73.1 mm (2.9 in) |
| 1951 | 56.1 mm (2.2 in) |
| 1952 | 93.7 mm (3.7 in) |
| 1953 | 109.7 mm (4.3 in) |
| 1954 | 140.3 mm (5.5 in) |
| 1955 | 68.9 mm (2.7 in) |
| 1956 | 95.6 mm (3.8 in) |
| 1957 | 108.2 mm (4.3 in) |
| 1958 | 112.3 mm (4.4 in) |
| 1959 | 81.3 mm (3.2 in) |
| 1960 | 95.3 mm (3.8 in) |
| 1961 | 89.7 mm (3.5 in) |
| 1962 | 60.2 mm (2.4 in) |
| 1963 | 71.7 mm (2.8 in) |
| 1964 | 85.1 mm (3.4 in) |
| 1965 | 74.9 mm (2.9 in) |
| 1966 | 71.9 mm (2.8 in) |
| 1967 | 80.3 mm (3.2 in) |
| 1968 | 61.2 mm (2.4 in) |
| 1969 | 91.9 mm (3.6 in) |
| 1970 | 73.7 mm (2.9 in) |
| 1971 | 61.6 mm (2.4 in) |
| 1972 | 163.5 mm (6.4 in) |
| 1973 | 116.6 mm (4.6 in) |
| 1974 | 99.5 mm (3.9 in) |
| 1975 | 114.4 mm (4.5 in) |
| 1976 | 70.4 mm (2.8 in) |
| 1977 | 91.4 mm (3.6 in) |
| 1978 | 71.6 mm (2.8 in) |
| 1979 | 47.1 mm (1.9 in) |
| 1980 | 74.2 mm (2.9 in) |
| 1981 | 79.8 mm (3.1 in) |
| 1982 | 63.0 mm (2.5 in) |
| 1983 | 63.2 mm (2.5 in) |
| 1984 | 69.8 mm (2.7 in) |
| 1985 | 84.5 mm (3.3 in) |
| 1986 | 58.4 mm (2.3 in) |
| 1987 | 99.6 mm (3.9 in) |
| 1988 | 67.3 mm (2.6 in) |
| 1989 | 98.3 mm (3.9 in) |
| 1990 | 114.7 mm (4.5 in) |
| 1991 | 57.4 mm (2.3 in) |
| 1992 | 113.0 mm (4.4 in) |
| 1993 | 88.9 mm (3.5 in) |
| 1994 | 132.1 mm (5.2 in) |
| 1995 | 66.5 mm (2.6 in) |
| 1996 | 107.7 mm (4.2 in) |
| 1997 | 57.5 mm (2.3 in) |
| 1998 | 77.2 mm (3.0 in) |
| 1999 | 68.9 mm (2.7 in) |
| 2000 | 67.7 mm (2.7 in) |
| 2001 | 60.8 mm (2.4 in) |
| 2002 | 81.9 mm (3.2 in) |
| 2003 | 172.4 mm (6.8 in) |
| 2004 | 130.6 mm (5.1 in) |
| 2005 | 88.8 mm (3.5 in) |
| 2006 | 107.2 mm (4.2 in) |
| 2007 | 71.9 mm (2.8 in) |
| 2008 | 59.1 mm (2.3 in) |
| 2009 | 71.4 mm (2.8 in) |
| 2010 | 77.2 mm (3.0 in) |
| 2011 | 85.1 mm (3.4 in) |
| 2012 | 63.2 mm (2.5 in) |
| 2013 | 126.2 mm (5.0 in) |
| 2014 | 98.4 mm (3.9 in) |
| 2015 | 70.1 mm (2.8 in) |
| 2016 | 72.1 mm (2.8 in) |
| 2017 | 110.8 mm (4.4 in) |
| 2018 | 92.1 mm (3.6 in) |
| 2019 | 89.0 mm (3.5 in) |
| 2020 | 57.8 mm (2.3 in) |
| 2021 | 93.2 mm (3.7 in) |
| 2022 | 89.9 mm (3.5 in) |
| 2023 | 57.0 mm (2.2 in) |
| 2024 | 113.1 mm (4.5 in) |
| 2025 | 94.5 mm (3.7 in) |
| 2026 | 79.3 mm (3.1 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1921 | 13 days |
| 1922 | 26 days |
| 1923 | 12 days |
| 1927 | 5 days |
| 1928 | 6 days |
| 1941 | 19 days |
| 1942 | 11 days |
| 1943 | 14 days |
| 1944 | 15 days |
| 1945 | 10 days |
| 1946 | 14 days |
| 1947 | 18 days |
| 1948 | 16 days |
| 1949 | 19 days |
| 1950 | 14 days |
| 1951 | 16 days |
| 1952 | 12 days |
| 1953 | 20 days |
| 1954 | 14 days |
| 1955 | 15 days |
| 1956 | 14 days |
| 1957 | 13 days |
| 1958 | 11 days |
| 1959 | 24 days |
| 1960 | 13 days |
| 1961 | 11 days |
| 1962 | 14 days |
| 1963 | 23 days |
| 1964 | 24 days |
| 1965 | 13 days |
| 1966 | 19 days |
| 1967 | 11 days |
| 1968 | 11 days |
| 1969 | 18 days |
| 1970 | 10 days |
| 1971 | 15 days |
| 1972 | 9 days |
| 1973 | 15 days |
| 1974 | 10 days |
| 1975 | 12 days |
| 1976 | 15 days |
| 1977 | 18 days |
| 1978 | 12 days |
| 1979 | 10 days |
| 1980 | 23 days |
| 1981 | 13 days |
| 1982 | 13 days |
| 1983 | 12 days |
| 1984 | 13 days |
| 1985 | 12 days |
| 1986 | 12 days |
| 1987 | 8 days |
| 1988 | 17 days |
| 1989 | 13 days |
| 1990 | 9 days |
| 1991 | 11 days |
| 1992 | 12 days |
| 1993 | 13 days |
| 1994 | 14 days |
| 1995 | 20 days |
| 1996 | 11 days |
| 1997 | 12 days |
| 1998 | 20 days |
| 1999 | 11 days |
| 2000 | 12 days |
| 2001 | 10 days |
| 2002 | 13 days |
| 2003 | 12 days |
| 2004 | 25 days |
| 2005 | 12 days |
| 2006 | 12 days |
| 2007 | 12 days |
| 2008 | 16 days |
| 2009 | 12 days |
| 2010 | 14 days |
| 2011 | 13 days |
| 2012 | 11 days |
| 2013 | 13 days |
| 2014 | 8 days |
| 2015 | 9 days |
| 2016 | 10 days |
| 2017 | 11 days |
| 2018 | 10 days |
| 2019 | 10 days |
| 2020 | 20 days |
| 2021 | 16 days |
| 2022 | 8 days |
| 2023 | 21 days |
| 2024 | 13 days |
| 2025 | 16 days |
| 2026 | 12 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
65 years with a frostAcross 65 years with a frost, the median last spring frost at Tionesta 2 SE Lake falls on 11 May and the median first autumn frost on 14 October, which leaves a median of 158 days between them.
In 1985 to 2025 the median growing season was 169 days. That is 22 days more than in 1944 to 1977.
Fitted over all years, the growing season changes by +5.1 days per decade at this station.
| Measure | Median, all years | Earliest period (1944 to 1977) | Recent period (1985 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 11 May | 12 May | 6 May | 6 days earlier | -1.9 days per decade |
| First autumn frost | 14 October | 5 October | 19 October | 14 days later | +3.2 days per decade |
| Growing days | 158 days | 147 days | 169 days | 22 days more | +5.1 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
80 years, 1922 to 2025A day with at least 52.4 mm (2.1 in) of rain is expected about once in 2 years. A day with at least 120.4 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 | 52.4 mm (2.1 in) | |
| 5 years | 67.8 mm (2.7 in) | |
| 10 years | 79.0 mm (3.1 in) | |
| 25 years | 94.5 mm (3.7 in) | |
| 50 years | 107.0 mm (4.2 in) | |
| 100 years | 120.4 mm (4.7 in) | Longer than the 80 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, 80 years of values from 1922 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: 119.9 mm (4.7 in) in 1954; 119.9 mm (4.7 in) in 1994; 110.2 mm (4.3 in) in 2004.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Tionesta 2 SE Lake, at 1972. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1972 ran 0.3 C (0.5 F) higher than in the years before (possible change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1972 | +0.3 | +0.5 | possible | 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
2011 to 2025 against 1961 to 1990Over 2011 to 2025, Tionesta 2 SE Lake had a mean temperature of 10.4 C (50.8 F) and 1,195.6 mm (47.1 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Coatesville 1 SW (United States, 348 km away), Wanaque Raymond Dam (United States, 433 km away) and Westchester Co AP (United States, 482 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Coatesville 1 SW | United States | 348 km (216 mi) | 10.6 C (51.1 F) | 1,169.6 mm (46.0 in) | 0.59 |
| Wanaque Raymond Dam | United States | 433 km (269 mi) | 10.3 C (50.6 F) | 1,192.3 mm (46.9 in) | 0.60 |
| Westchester Co AP | United States | 482 km (300 mi) | 10.4 C (50.7 F) | 1,240.5 mm (48.8 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-12).