Allentown Lehigh Vly Intl AP Threshold Days by Year (USW00014737)
19 fixed thresholds counted per year at Allentown Lehigh Vly Intl AP (USW00014737): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Allentown Lehigh Vly Intl AP Thresholds
- Allentown Lehigh Vly Intl AP: days with a maximum temperature at or above 30 C (86 F) in 79 years, most in 2016 with 73.
- Allentown Lehigh Vly Intl AP: days with a maximum temperature at or above 90 F (32.2 C) in 79 years, most in 1966 with 41.
- Allentown Lehigh Vly Intl AP: days with a maximum temperature at or below 0 C (32 F) in 79 years, most in 1978 with 55.
- Allentown Lehigh Vly Intl AP: nights with a minimum temperature at or below 0 C (32 F) in 79 years, most in 1997 with 143.
- 19 fixed thresholds have at least one qualifying day at Allentown Lehigh Vly Intl AP.
Days at or above 30 C (86 F)
79 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1948 | 40 | 50.5 |
| 1949 | 61 | 50.5 |
| 1950 | 39 | 39.9 |
| 1951 | 31 | 39.9 |
| 1952 | 42 | 39.9 |
| 1953 | 44 | 39.9 |
| 1954 | 32 | 39.9 |
| 1955 | 50 | 39.9 |
| 1956 | 26 | 39.9 |
| 1957 | 48 | 39.9 |
| 1958 | 31 | 39.9 |
| 1959 | 56 | 39.9 |
| 1960 | 18 | 35.8 |
| 1961 | 40 | 35.8 |
| 1962 | 35 | 35.8 |
| 1963 | 24 | 35.8 |
| 1964 | 43 | 35.8 |
| 1965 | 40 | 35.8 |
| 1966 | 62 | 35.8 |
| 1967 | 22 | 35.8 |
| 1968 | 44 | 35.8 |
| 1969 | 30 | 35.8 |
| 1970 | 36 | 31.8 |
| 1971 | 27 | 31.8 |
| 1972 | 28 | 31.8 |
| 1973 | 40 | 31.8 |
| 1974 | 20 | 31.8 |
| 1975 | 25 | 31.8 |
| 1976 | 37 | 31.8 |
| 1977 | 39 | 31.8 |
| 1978 | 39 | 31.8 |
| 1979 | 27 | 31.8 |
| 1980 | 63 | 36.5 |
| 1981 | 24 | 36.5 |
| 1982 | 17 | 36.5 |
| 1983 | 56 | 36.5 |
| 1984 | 31 | 36.5 |
| 1985 | 22 | 36.5 |
| 1986 | 28 | 36.5 |
| 1987 | 41 | 36.5 |
| 1988 | 53 | 36.5 |
| 1989 | 30 | 36.5 |
| 1990 | 37 | 41.9 |
| 1991 | 61 | 41.9 |
| 1992 | 21 | 41.9 |
| 1993 | 50 | 41.9 |
| 1994 | 49 | 41.9 |
| 1995 | 46 | 41.9 |
| 1996 | 26 | 41.9 |
| 1997 | 32 | 41.9 |
| 1998 | 44 | 41.9 |
| 1999 | 53 | 41.9 |
| 2000 | 23 | 36.3 |
| 2001 | 29 | 36.3 |
| 2002 | 55 | 36.3 |
| 2003 | 31 | 36.3 |
| 2004 | 27 | 36.3 |
| 2005 | 54 | 36.3 |
| 2006 | 38 | 36.3 |
| 2007 | 50 | 36.3 |
| 2008 | 38 | 36.3 |
| 2009 | 18 | 36.3 |
| 2010 | 61 | 53 |
| 2011 | 44 | 53 |
| 2012 | 50 | 53 |
| 2013 | 38 | 53 |
| 2014 | 32 | 53 |
| 2015 | 59 | 53 |
| 2016 | 73 | 53 |
| 2017 | 52 | 53 |
| 2018 | 61 | 53 |
| 2019 | 60 | 53 |
| 2020 | 48 | 46 |
| 2021 | 52 | 46 |
| 2022 | 56 | 46 |
| 2023 | 34 | 46 |
| 2024 | 44 | 46 |
| 2025 | 47 | 46 |
| 2026 | 41 | 46 |
| Year | First date | Last date |
|---|---|---|
| 1948 | 1948-05-10 | 1948-09-18 |
| 1949 | 1949-05-04 | 1949-10-11 |
| 1950 | 1950-06-06 | 1950-10-02 |
| 1951 | 1951-05-16 | 1951-10-05 |
| 1952 | 1952-06-09 | 1952-09-13 |
| 1953 | 1953-05-11 | 1953-09-30 |
| 1954 | 1954-06-01 | 1954-09-07 |
| 1955 | 1955-05-05 | 1955-08-22 |
| 1956 | 1956-05-13 | 1956-08-28 |
| 1957 | 1957-04-27 | 1957-09-22 |
| 1958 | 1958-06-30 | 1958-09-26 |
| 1959 | 1959-05-07 | 1959-10-06 |
| 1960 | 1960-04-23 | 1960-09-01 |
| 1961 | 1961-06-02 | 1961-09-24 |
| 1962 | 1962-04-26 | 1962-09-01 |
| 1963 | 1963-06-10 | 1963-08-23 |
| 1964 | 1964-05-09 | 1964-09-23 |
| 1965 | 1965-05-04 | 1965-09-22 |
| 1966 | 1966-06-04 | 1966-09-03 |
| 1967 | 1967-06-05 | 1967-08-18 |
| 1968 | 1968-06-06 | 1968-09-25 |
| 1969 | 1969-04-27 | 1969-09-17 |
| 1970 | 1970-05-10 | 1970-09-26 |
| 1971 | 1971-05-19 | 1971-09-09 |
| 1972 | 1972-05-24 | 1972-09-17 |
| 1973 | 1973-06-04 | 1973-09-05 |
| 1974 | 1974-04-29 | 1974-08-14 |
| 1975 | 1975-05-20 | 1975-10-14 |
| 1976 | 1976-04-17 | 1976-09-14 |
| 1977 | 1977-04-12 | 1977-09-03 |
| 1978 | 1978-05-20 | 1978-09-12 |
| 1979 | 1979-05-09 | 1979-09-04 |
| 1980 | 1980-05-05 | 1980-09-22 |
| 1981 | 1981-05-25 | 1981-09-14 |
| 1982 | 1982-07-08 | 1982-09-12 |
| 1983 | 1983-04-28 | 1983-09-20 |
| 1984 | 1984-05-22 | 1984-08-16 |
| 1985 | 1985-04-19 | 1985-09-07 |
| 1986 | 1986-05-06 | 1986-09-30 |
| 1987 | 1987-05-10 | 1987-08-19 |
| 1988 | 1988-05-29 | 1988-08-27 |
| 1989 | 1989-05-19 | 1989-09-11 |
| 1990 | 1990-04-26 | 1990-09-02 |
| 1991 | 1991-05-12 | 1991-09-17 |
| 1992 | 1992-05-21 | 1992-08-28 |
| 1993 | 1993-05-10 | 1993-09-15 |
| 1994 | 1994-04-15 | 1994-09-13 |
| 1995 | 1995-05-24 | 1995-09-14 |
| 1996 | 1996-05-19 | 1996-09-08 |
| 1997 | 1997-06-10 | 1997-08-17 |
| 1998 | 1998-03-30 | 1998-09-27 |
| 1999 | 1999-05-30 | 1999-09-06 |
| 2000 | 2000-05-05 | 2000-09-09 |
| 2001 | 2001-04-23 | 2001-08-31 |
| 2002 | 2002-04-16 | 2002-09-10 |
| 2003 | 2003-04-16 | 2003-08-25 |
| 2004 | 2004-04-19 | 2004-08-29 |
| 2005 | 2005-06-05 | 2005-09-22 |
| 2006 | 2006-05-29 | 2006-08-20 |
| 2007 | 2007-05-15 | 2007-10-09 |
| 2008 | 2008-06-07 | 2008-09-14 |
| 2009 | 2009-04-25 | 2009-08-21 |
| 2010 | 2010-04-07 | 2010-09-24 |
| 2011 | 2011-05-26 | 2011-10-09 |
| 2012 | 2012-04-16 | 2012-09-08 |
| 2013 | 2013-04-10 | 2013-09-11 |
| 2014 | 2014-06-03 | 2014-09-06 |
| 2015 | 2015-05-08 | 2015-09-18 |
| 2016 | 2016-05-25 | 2016-09-23 |
| 2017 | 2017-05-17 | 2017-09-27 |
| 2018 | 2018-04-14 | 2018-09-16 |
| 2019 | 2019-05-19 | 2019-10-02 |
| 2020 | 2020-05-29 | 2020-08-27 |
| 2021 | 2021-04-28 | 2021-09-15 |
| 2022 | 2022-05-21 | 2022-09-04 |
| 2023 | 2023-04-13 | 2023-09-08 |
| 2024 | 2024-04-29 | 2024-08-28 |
| 2025 | 2025-06-04 | 2025-09-28 |
| 2026 | 2026-04-15 | 2026-09-10 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 79 | 73 | 2016 | 41 |
| 35 C (95 F): Days | 59 | 15 | 1999 | 5 |
| 40 C (104 F): Days | 2 | 1 | 1966 | 1 |
| 90 F (32.2 C): Days | 79 | 41 | 1966 | 17 |
| 100 F (37.8 C): Days | 11 | 4 | 1966 | 1 |
| 0 C (32 F): Ice days (max | 79 | 55 | 1978 | 26 |
| 0 C (32 F): Frost days (min | 79 | 143 | 1997 | 75 |
| -10 C (14 F): Days with min | 79 | 48 | 1963 | 20 |
| -20 C (-4 F): Days with min | 25 | 5 | 1948 | 2 |
| 20 C (68 F): Tropical nights (min | 79 | 48 | 2018 | 24 |
| 25 C (77 F): Days with min | 7 | 1 | 1978 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 79 | 59 | 2018 | 28 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 79 | 21 | 2011 | 6 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 63 | 8 | 2011 | 2 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 10 | 2 | 1952 | 1 |
| 200 mm (7.87 in): Days with 200 mm or more rain | 1 | 1 | 2005 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 72 | 8 | 1994 | 3 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 27 | 2 | 1958 | 1 |
| 50 cm (19.7 in): Days with 50 cm or more snowfall | 3 | 1 | 1983 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1948.
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). Threshold counts are computed by this site.
Data as of . Last revised (2026-10-12).