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Monthly climate in Summerville, Georgia, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Summerville features a humid subtropical climate (Cfa).Temperatures typically range between 7 °C (44 °F) and 26 °C (80 °F) through the year, but rarely can drop to -12 °C (10 °F) or can rise to as high as 37 °C (99 °F).The average annual precipitation amounts to about 1615 mm (63.6 inches) and receives 139 rainy days on the 1 mm (0.04 inches) threshold annually.Summerville enjoys an average of 3015 hours of sunshine throughout the year, and daylight varies from 9 hours 52 minutes to 14 hours 25 minutes per day.

Monthly average temperatures in Summerville, Georgia, United States §

The warmest months in Summerville are June, July and August, with daily mean temperatures ranging from 25 to 26 °C (76 - 80 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 7 to 10 °C (44 - 50 °F) throughout the day. On average each year, Summerville experiences 145 days above 25 °C (77.0 °F) and 32 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Summerville, Georgia, 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 24°C
(76°F)		 26°C
(80°F)		 29°C
(85°F)		 31°C
(87°F)		 35°C
(95°F)		 35°C
(95°F)		 36°C
(96°F)		 36°C
(96°F)		 35°C
(96°F)		 37°C
(99°F)		 25°C
(77°F)		 24°C
(75°F)
Mean maximum 21°C
(71°F)		 24°C
(76°F)		 27°C
(80°F)		 29°C
(84°F)		 33°C
(92°F)		 33°C
(91°F)		 35°C
(95°F)		 34°C
(94°F)		 33°C
(92°F)		 31°C
(89°F)		 24°C
(76°F)		 21°C
(71°F)
Average high 12°C
(53°F)		 15°C
(59°F)		 19°C
(66°F)		 23°C
(73°F)		 27°C
(81°F)		 30°C
(86°F)		 31°C
(89°F)		 31°C
(88°F)		 29°C
(85°F)		 24°C
(75°F)		 17°C
(62°F)		 13°C
(56°F)
Daily mean 7°C
(44°F)		 10°C
(50°F)		 13°C
(56°F)		 16°C
(62°F)		 22°C
(71°F)		 25°C
(76°F)		 26°C
(80°F)		 26°C
(79°F)		 24°C
(75°F)		 18°C
(65°F)		 11°C
(51°F)		 8°C
(47°F)
Average low 2°C
(36°F)		 5°C
(41°F)		 8°C
(46°F)		 10°C
(51°F)		 16°C
(62°F)		 20°C
(69°F)		 22°C
(72°F)		 22°C
(71°F)		 19°C
(66°F)		 14°C
(57°F)		 5°C
(42°F)		 4°C
(39°F)
Mean minimum -7°C
(20°F)		 -4°C
(25°F)		 -2°C
(28°F)		 1°C
(34°F)		 8°C
(46°F)		 16°C
(60°F)		 19°C
(66°F)		 18°C
(65°F)		 13°C
(55°F)		 3°C
(38°F)		 -3°C
(27°F)		 -4°C
(25°F)
Minimum -12°C
(10°F)		 -6°C
(21°F)		 -4°C
(25°F)		 -0°C
(32°F)		 3°C
(39°F)		 12°C
(53°F)		 17°C
(63°F)		 16°C
(61°F)		 10°C
(50°F)		 -1°C
(31°F)		 -6°C
(22°F)		 -7°C
(20°F)

Compare climate in Summerville with other places

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

Monthly average precipitation in Summerville, Georgia, United States §

Summerville usually has the most precipitation in February, March and December, with an average of 13 rainy days and 176 mm (6.9 inches) of precipitation per month.The driest months in Summerville are May, September and November. On average, 98 mm (3.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Summerville, Georgia, 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) 123 (4.8) 198 (7.8) 169 (6.7) 153 (6.0) 95 (3.7) 129 (5.1) 113 (4.4) 138 (5.4) 111 (4.4) 136 (5.4) 89 (3.5) 161 (6.3)
Average precipitation days (≥ 1 mm) 10 14 13 9 11 14 15 15 8 9 9 12

Monthly sunshine hours in Summerville, Georgia, United States §

The sunniest months in Summerville are May, July and August, when the sun shines an average of 10 hours 8 minutes a day.Least sunny months in Summerville: January, February and December receive an average of 5 hours 24 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Summerville, Georgia, 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 156 158 224 271 305 303 329 308 288 259 233 175
Mean daily daylight hours 10h 7m 10h 56m 11h 59m 13h 4m 13h 58m 14h 25m 14h 10m 13h 22m 12h 20m 11h 16m 10h 20m 9h 52m

Solar UV radiation in Summerville, Georgia, United States §

Summerville experiences the highest level of ultraviolet (UV) radiation in May, July and August, when the maximum UV index can reach values of 11 - 11, which corresponds to the Extreme category of sun exposure.January, February and December are in the Moderate / High exposure category. In these months, the maximum values of the UV index do not exceed 6. For more detailed information, check out our hourly Summerville UV Index data.

Average daily maximum UV levels by month for Summerville, Georgia, 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) 4 6 8 10 11 11 11 11 9 7 6 4