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Monthly climate in Chambersburg, Pennsylvania, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Chambersburg features a humid subtropical climate (Cfa).Temperatures typically range between 0 °C (32 °F) and 25 °C (77 °F) through the year, but rarely can drop to -18 °C (0 °F) or can rise to as high as 36 °C (97 °F).The average annual precipitation amounts to about 1194 mm (47.0 inches) and receives 128 rainy days on the 1 mm (0.04 inches) threshold annually.Chambersburg enjoys an average of 2861 hours of sunshine throughout the year, and daylight varies from 9 hours 22 minutes to 14 hours 56 minutes per day.

Monthly average temperatures in Chambersburg, Pennsylvania, United States §

The warmest months in Chambersburg are June, July and August, with daily mean temperatures ranging from 22 to 25 °C (71 - 77 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 0 to 2 °C (32 - 37 °F) throughout the day. On average each year, Chambersburg experiences 95 days above 25 °C (77.0 °F) and 85 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Chambersburg, Pennsylvania, United States.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 19°C
(66°F)		 26°C
(79°F)		 24°C
(75°F)		 30°C
(86°F)		 32°C
(90°F)		 34°C
(93°F)		 36°C
(97°F)		 36°C
(96°F)		 34°C
(93°F)		 33°C
(91°F)		 24°C
(75°F)		 18°C
(65°F)
Mean maximum 15°C
(58°F)		 20°C
(67°F)		 22°C
(72°F)		 27°C
(81°F)		 31°C
(88°F)		 33°C
(91°F)		 35°C
(95°F)		 34°C
(93°F)		 32°C
(89°F)		 29°C
(84°F)		 22°C
(71°F)		 15°C
(59°F)
Average high 4°C
(39°F)		 7°C
(44°F)		 11°C
(51°F)		 17°C
(62°F)		 22°C
(72°F)		 27°C
(80°F)		 30°C
(87°F)		 29°C
(84°F)		 25°C
(78°F)		 19°C
(67°F)		 11°C
(52°F)		 6°C
(43°F)
Daily mean 0°C
(32°F)		 2°C
(36°F)		 5°C
(42°F)		 11°C
(53°F)		 17°C
(63°F)		 22°C
(71°F)		 25°C
(77°F)		 24°C
(75°F)		 20°C
(68°F)		 14°C
(58°F)		 6°C
(43°F)		 2°C
(37°F)
Average low -3°C
(26°F)		 -2°C
(28°F)		 1°C
(34°F)		 6°C
(44°F)		 12°C
(54°F)		 17°C
(62°F)		 20°C
(68°F)		 19°C
(67°F)		 16°C
(60°F)		 10°C
(50°F)		 2°C
(35°F)		 -1°C
(30°F)
Mean minimum -14°C
(8°F)		 -13°C
(8°F)		 -9°C
(16°F)		 -2°C
(28°F)		 2°C
(37°F)		 10°C
(51°F)		 15°C
(60°F)		 14°C
(57°F)		 8°C
(47°F)		 2°C
(35°F)		 -6°C
(22°F)		 -9°C
(16°F)
Minimum -18°C
(0°F)		 -18°C
(-0°F)		 -16°C
(4°F)		 -4°C
(26°F)		 -1°C
(31°F)		 7°C
(44°F)		 14°C
(57°F)		 12°C
(54°F)		 3°C
(38°F)		 -0°C
(32°F)		 -7°C
(20°F)		 -13°C
(9°F)

Compare climate in Chambersburg with other places

Compare temperature, precipitation, sunshine, UV index in Chambersburg, Pennsylvania, United States with other places around the world.

Monthly average precipitation in Chambersburg, Pennsylvania, United States §

Chambersburg usually has the most precipitation in May, July and September, with an average of 11 rainy days and 123 mm (4.8 inches) of precipitation per month.The driest months in Chambersburg are January, March and November. On average, 78 mm (3.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Chambersburg, Pennsylvania, United States.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 61 (2.4) 99 (3.9) 90 (3.5) 106 (4.2) 117 (4.6) 92 (3.6) 128 (5.0) 93 (3.7) 124 (4.9) 108 (4.3) 82 (3.2) 93 (3.7)
Average precipitation days (≥ 1 mm) 8 11 11 13 14 11 11 13 9 10 8 9

Monthly sunshine hours in Chambersburg, Pennsylvania, United States §

The sunniest months in Chambersburg are June, July and August, when the sun shines an average of 10 hours 25 minutes a day.Least sunny months in Chambersburg: January, February and December receive an average of 5 hours 5 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Chambersburg, Pennsylvania, United States.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 128 164 241 239 255 309 340 308 268 226 207 170
Mean daily daylight hours 9h 41m 10h 41m 11h 58m 13h 17m 14h 23m 14h 56m 14h 38m 13h 39m 12h 24m 11h 5m 9h 57m 9h 22m

Solar UV radiation in Chambersburg, Pennsylvania, United States §

Chambersburg experiences the highest level of ultraviolet (UV) radiation in May, June and July, when the maximum UV index can reach values of 10 - 10, which corresponds to the Very High category of sun exposure.January, November and December are in the Low / Moderate exposure category. In these months, the maximum values of the UV index do not exceed 4. For more detailed information, check out our hourly Chambersburg UV Index data.

Average daily maximum UV levels by month for Chambersburg, Pennsylvania, United States.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 3 5 7 9 10 10 10 9 8 6 4 2