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Monthly climate in Caln, Pennsylvania, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Caln features a humid subtropical climate (Cfa).Temperatures typically range between 1 °C (35 °F) and 25 °C (78 °F) through the year, but rarely can drop to -17 °C (1 °F) or can rise to as high as 36 °C (98 °F).The average annual precipitation amounts to about 1358 mm (53.4 inches) and receives 137 rainy days on the 1 mm (0.04 inches) threshold annually.Caln enjoys an average of 2950 hours of sunshine throughout the year, and daylight varies from 9 hours 22 minutes to 14 hours 57 minutes per day.

Monthly average temperatures in Caln, Pennsylvania, United States §

The warmest months in Caln are June, July and August, with daily mean temperatures ranging from 22 to 25 °C (73 - 78 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 1 to 3 °C (35 - 39 °F) throughout the day. On average each year, Caln experiences 95 days above 25 °C (77.0 °F) and 70 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Caln, 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)		 25°C
(78°F)		 27°C
(81°F)		 30°C
(87°F)		 34°C
(93°F)		 36°C
(97°F)		 36°C
(98°F)		 35°C
(94°F)		 34°C
(93°F)		 34°C
(93°F)		 24°C
(75°F)		 18°C
(65°F)
Mean maximum 16°C
(61°F)		 19°C
(67°F)		 23°C
(74°F)		 27°C
(82°F)		 32°C
(90°F)		 34°C
(93°F)		 35°C
(96°F)		 34°C
(93°F)		 32°C
(90°F)		 28°C
(83°F)		 22°C
(73°F)		 16°C
(61°F)
Average high 5°C
(41°F)		 7°C
(46°F)		 11°C
(52°F)		 17°C
(63°F)		 22°C
(72°F)		 27°C
(81°F)		 30°C
(87°F)		 29°C
(84°F)		 25°C
(78°F)		 20°C
(68°F)		 12°C
(54°F)		 7°C
(45°F)
Daily mean 1°C
(35°F)		 3°C
(38°F)		 6°C
(43°F)		 12°C
(54°F)		 17°C
(64°F)		 22°C
(73°F)		 25°C
(78°F)		 24°C
(75°F)		 21°C
(70°F)		 15°C
(60°F)		 7°C
(45°F)		 3°C
(39°F)
Average low -2°C
(28°F)		 -1°C
(31°F)		 2°C
(35°F)		 7°C
(45°F)		 13°C
(55°F)		 18°C
(64°F)		 21°C
(70°F)		 20°C
(68°F)		 17°C
(62°F)		 11°C
(52°F)		 3°C
(37°F)		 -0°C
(32°F)
Mean minimum -12°C
(11°F)		 -10°C
(14°F)		 -7°C
(19°F)		 -0°C
(32°F)		 5°C
(41°F)		 12°C
(53°F)		 16°C
(60°F)		 15°C
(59°F)		 9°C
(49°F)		 3°C
(38°F)		 -5°C
(23°F)		 -8°C
(17°F)
Minimum -17°C
(2°F)		 -16°C
(3°F)		 -17°C
(1°F)		 -2°C
(28°F)		 1°C
(34°F)		 9°C
(49°F)		 13°C
(56°F)		 13°C
(56°F)		 5°C
(42°F)		 1°C
(35°F)		 -7°C
(19°F)		 -12°C
(11°F)

Compare climate in Caln with other places

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

Monthly average precipitation in Caln, Pennsylvania, United States §

Caln usually has the most precipitation in May, July and August, with an average of 15 rainy days and 150 mm (5.9 inches) of precipitation per month.The driest months in Caln are January, October and November. On average, 85 mm (3.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Caln, 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) 67 (2.6) 108 (4.3) 107 (4.2) 108 (4.2) 141 (5.5) 118 (4.7) 151 (5.9) 157 (6.2) 109 (4.3) 103 (4.0) 87 (3.4) 103 (4.1)
Average precipitation days (≥ 1 mm) 8 12 11 11 14 12 15 16 10 10 8 10

Monthly sunshine hours in Caln, Pennsylvania, United States §

The sunniest months in Caln are June, July and August, when the sun shines an average of 10 hours 33 minutes a day.Least sunny months in Caln: January, February and December receive an average of 5 hours 27 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Caln, 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 141 173 244 249 272 313 347 310 267 225 221 182
Mean daily daylight hours 9h 41m 10h 41m 11h 58m 13h 17m 14h 24m 14h 57m 14h 38m 13h 39m 12h 24m 11h 5m 9h 56m 9h 22m

Solar UV radiation in Caln, Pennsylvania, United States §

Caln 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 Caln UV Index data.

Average daily maximum UV levels by month for Caln, 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 6 9 10 10 10 9 8 6 4 2