nomadseason

Monthly climate in Lemont, Pennsylvania, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Lemont features a humid continental climate (Dfb).Temperatures typically range between -2 °C (29 °F) and 24 °C (75 °F) through the year, but rarely can drop to -25 °C (-13 °F) or can rise to as high as 35 °C (95 °F).The average annual precipitation amounts to about 1190 mm (46.8 inches) and receives 141 rainy days on the 1 mm (0.04 inches) threshold annually.Lemont enjoys an average of 2709 hours of sunshine throughout the year, and daylight varies from 9 hours 17 minutes to 15 hours 2 minutes per day.

Monthly average temperatures in Lemont, Pennsylvania, United States §

The warmest months in Lemont are June, July and August, with daily mean temperatures ranging from 20 to 24 °C (69 - 75 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -2 to 1 °C (29 - 34 °F) throughout the day. On average each year, Lemont experiences 79 days above 25 °C (77.0 °F) and 102 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Lemont, 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 18°C
(64°F)		 23°C
(74°F)		 21°C
(70°F)		 28°C
(82°F)		 31°C
(88°F)		 35°C
(95°F)		 35°C
(95°F)		 35°C
(95°F)		 33°C
(92°F)		 31°C
(87°F)		 23°C
(74°F)		 19°C
(66°F)
Mean maximum 13°C
(55°F)		 17°C
(63°F)		 20°C
(68°F)		 25°C
(78°F)		 30°C
(86°F)		 32°C
(90°F)		 33°C
(92°F)		 33°C
(92°F)		 31°C
(88°F)		 27°C
(81°F)		 20°C
(68°F)		 13°C
(56°F)
Average high 2°C
(36°F)		 5°C
(41°F)		 9°C
(48°F)		 15°C
(59°F)		 21°C
(70°F)		 26°C
(78°F)		 29°C
(84°F)		 28°C
(83°F)		 24°C
(76°F)		 18°C
(64°F)		 9°C
(48°F)		 5°C
(41°F)
Daily mean -2°C
(29°F)		 0°C
(33°F)		 4°C
(39°F)		 10°C
(50°F)		 16°C
(61°F)		 20°C
(69°F)		 24°C
(75°F)		 23°C
(73°F)		 19°C
(66°F)		 13°C
(56°F)		 5°C
(41°F)		 1°C
(34°F)
Average low -5°C
(23°F)		 -4°C
(25°F)		 -1°C
(31°F)		 5°C
(41°F)		 11°C
(52°F)		 15°C
(60°F)		 19°C
(66°F)		 18°C
(64°F)		 14°C
(57°F)		 9°C
(48°F)		 0°C
(33°F)		 -2°C
(28°F)
Mean minimum -16°C
(3°F)		 -16°C
(3°F)		 -11°C
(13°F)		 -3°C
(27°F)		 1°C
(34°F)		 8°C
(47°F)		 13°C
(55°F)		 12°C
(53°F)		 6°C
(44°F)		 -0°C
(32°F)		 -8°C
(17°F)		 -10°C
(14°F)
Minimum -24°C
(-11°F)		 -25°C
(-13°F)		 -20°C
(-3°F)		 -4°C
(24°F)		 -2°C
(29°F)		 4°C
(40°F)		 10°C
(51°F)		 11°C
(52°F)		 2°C
(35°F)		 -2°C
(28°F)		 -15°C
(5°F)		 -14°C
(7°F)

Compare climate in Lemont with other places

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

Monthly average precipitation in Lemont, Pennsylvania, United States §

Lemont usually has the most precipitation in May, September and October, with an average of 12 rainy days and 118 mm (4.7 inches) of precipitation per month.The driest months in Lemont are January, August and November. On average, 79 mm (3.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Lemont, 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) 106 (4.2) 90 (3.5) 106 (4.2) 122 (4.8) 94 (3.7) 110 (4.3) 87 (3.4) 122 (4.8) 112 (4.4) 83 (3.3) 91 (3.6)
Average precipitation days (≥ 1 mm) 9 13 12 14 14 13 13 11 10 12 9 11

Monthly sunshine hours in Lemont, Pennsylvania, United States §

The sunniest months in Lemont are June, July and August, when the sun shines an average of 10 hours 6 minutes a day.Least sunny months in Lemont: January, February and December receive an average of 4 hours 36 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Lemont, 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 118 150 223 228 248 301 325 302 262 212 184 150
Mean daily daylight hours 9h 36m 10h 39m 11h 58m 13h 19m 14h 28m 15h 2m 14h 43m 13h 42m 12h 24m 11h 3m 9h 53m 9h 17m

Solar UV radiation in Lemont, Pennsylvania, United States §

Lemont 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 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 Lemont UV Index data.

Average daily maximum UV levels by month for Lemont, 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 3