| Month | Average (°F) | Record (°F) | Average (inches) | |||
|---|---|---|---|---|---|---|
| High ☀️ | Low 🌙 | High ☀️ | Low 🌙 | Precipitation 💧 | Snow ❄️ | |
| January | 37.5 | 21.1 | 72 | -16 | 3.3 | 9.8 |
| February | 40.7 | 22.5 | 81 | -13 | 2.8 | 10.4 |
| March | 49.9 | 29.9 | 87 | -1 | 3.6 | 6.3 |
| April | 62.5 | 39.7 | 94 | 16 | 3.7 | 0.5 |
| May | 72.6 | 49.9 | 97 | 29 | 3.6 | 0.0 |
| June | 81.0 | 59.3 | 100 | 39 | 4.4 | 0.0 |
| July | 85.5 | 64.1 | 105 | 46 | 5.3 | 0.0 |
| August | 83.4 | 62.2 | 105 | 41 | 4.6 | 0.0 |
| September | 76.5 | 54.6 | 101 | 31 | 4.8 | 0.0 |
| October | 64.6 | 43.2 | 94 | 19 | 4.1 | 0.2 |
| November | 52.9 | 33.4 | 81 | 10 | 3.2 | 0.9 |
| December | 42.2 | 26.1 | 72 | -9 | 3.9 | 5.3 |
| Entire year | 62.5 | 42.3 | 105 | -16 | 47.3 | 33.4 |
|
More Allentown Weather Records
1894–2024
|
||
|---|---|---|
| Highest daily low | 83 °F | August 10, 1913 |
| Lowest daily high | 2 °F | January 19, 1994 |
| Greatest daily range (Difference of high and low) |
53 °F | December 23, 2022 |
| Greatest difference in daily high over two conscutive days |
47 °F | Jan 6–7, 2014 |
| Most daily precipitation | 8.7 inches | October 8, 2005 |
| Most monthly precipitation | 13.5 inches | August 2011 |
| Most yearly precipitation | 71.7 inches | 2011 |
| Most yearly days with precipitation | 154 | 1996 |
| Earliest snow in season | October 10 | 1979 |
| Latest snow in season | April 27 | 1967 |
| Most daily snow | 30.2 inches | January 23, 2016 |
| Most monthly snow | 43.0 inches | January 1925 |
| Most yearly snow | 74.4 inches | 1994 |
| Most snow in a winter | 75.4 inches | 1995–1996 |
| Greatest snow accumulation | 28.0 inches | January 24, 2016 |
| Earliest freeze | September 11 | 1924 |
| Earliest day ≥ 80 °F | February 21 | 2018 |
| Earliest day ≥ 90 °F | April 7 | 2010 |
| Latest freeze | May 14 | 2013 |
| Latest day ≥ 80 °F | November 2 | 1950 |
| Latest day ≥ 90 °F | October 18 | 1938 |
| Most days in a year < 0 °F | 9 | 1948 |
| Most days in a year < 32 °F | 135 | 1969 |
| Most days in a year ≥ 80 °F | 127 | 1939 |
| Most days in a year ≥ 90 °F | 49 | 1941 |
| Most days in a year ≥ 100 °F | 4 | 1966 |
|
Allentown Weather Streaks
Most consecutive days...
|
||
|---|---|---|
| With precipitation | 10 days | May 16–25, 1988 |
| Without precipitation | 44 days | Oct 1 – Nov 13, 1924 |
| With snow | 6 days | Feb 20–25, 2005 |
| High temperature at or below freezing |
18 days | Jan 27 – Feb 13, 1978 |
| High temperature ≥ 80 °F | 47 days | Jun 13 – Jul 29, 1966 |
| High temperature ≥ 90 °F | 19 days | Jun 27 – Jul 15, 1966 |
| High temperature ≥ 100 °F | 3 days | Jul 2–4, 1966 |