| Month | Average (°F) | Record (°F) | Average (inches) | |||
|---|---|---|---|---|---|---|
| High ☀️ | Low 🌙 | High ☀️ | Low 🌙 | Precipitation 💧 | Snow ❄️ | |
| January | 38.1 | 22.8 | 77 | -21 | 3.2 | 9.6 |
| February | 41.8 | 24.4 | 79 | -16 | 2.6 | 8.2 |
| March | 51.6 | 31.8 | 88 | -8 | 3.5 | 6.0 |
| April | 63.9 | 41.5 | 94 | 8 | 4.0 | 0.3 |
| May | 73.3 | 51.4 | 98 | 25 | 4.1 | 0.0 |
| June | 81.5 | 60.5 | 102 | 32 | 4.1 | 0.0 |
| July | 85.6 | 64.7 | 107 | 41 | 3.8 | 0.0 |
| August | 83.6 | 62.9 | 105 | 37 | 3.8 | 0.0 |
| September | 76.4 | 55.7 | 101 | 28 | 4.0 | 0.0 |
| October | 64.7 | 44.5 | 95 | 18 | 3.7 | 0.0 |
| November | 53.2 | 34.9 | 82 | 4 | 2.9 | 1.0 |
| December | 42.1 | 27.3 | 75 | -13 | 3.4 | 5.7 |
| Entire year | 63.1 | 43.7 | 107 | -21 | 42.0 | 29.7 |
|
More Chambersburg Weather Records
1894–2024
|
||
|---|---|---|
| Highest daily low | 82 °F | July 24, 2010 |
| Lowest daily high | 1 °F | February 10, 1899 |
| Greatest daily range (Difference of high and low) |
57 °F | May 19, 1941 |
| Greatest difference in daily high over two conscutive days |
39 °F | Jan 13–14, 2018 |
| Most daily precipitation | 5.1 inches | July 30, 1923 |
| Most monthly precipitation | 11.3 inches | June 1972 |
| Most yearly precipitation | 62.1 inches | 1996 |
| Most yearly days with precipitation | 154 | 1984 |
| Earliest snow in season | October 19 | 1972 |
| Latest snow in season | May 31 | 1897 |
| Most daily snow | 26.2 inches | January 23, 2016 |
| Most monthly snow | 37.3 inches | January 1918 |
| Most yearly snow | 71.1 inches | 2003 |
| Most snow in a winter | 72.5 inches | 1960–1961 |
| Greatest snow accumulation | 30.0 inches | January 12, 1996 |
| Earliest freeze | September 16 | 1946 |
| Earliest day ≥ 80 °F | March 8 | 2000 |
| Earliest day ≥ 90 °F | April 7 | 2010 |
| Earliest day ≥ 100 °F | June 9 | 1933 |
| Latest freeze | May 27 | 1930 |
| Latest day ≥ 80 °F | November 3 | 1982 |
| Latest day ≥ 90 °F | October 8 | 2007 |
| Latest day ≥ 100 °F | September 11 | 1931 |
| Most days in a year < 0 °F | 10 | 1918 |
| Most days in a year < 32 °F | 138 | 1962 |
| Most days in a year ≥ 80 °F | 126 | 1941 |
| Most days in a year ≥ 90 °F | 56 | 1931 |
| Most days in a year ≥ 100 °F | 12 | 1930 |
|
Chambersburg Weather Streaks
Most consecutive days...
|
||
|---|---|---|
| With precipitation | 14 days | Aug 12–25, 1926 |
| Without precipitation | 34 days | Jul 11 – Aug 13, 1930 |
| With snow | 6 days | Feb 3–8, 1899 |
| High temperature at or below freezing |
17 days | Dec 26, 1917 – Jan 11, 1918 |
| High temperature ≥ 80 °F | 62 days | Jul 2 – Sep 1, 1938 |
| High temperature ≥ 90 °F | 14 days | Jul 18–31, 1930 |
| High temperature ≥ 100 °F | 4 days | Jul 19–22, 1930 |
| Years | Station | Coordinates |
|---|---|---|
| 1894–2024 | Chambersburg 1 ESE | location |