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Monthly climate in Newnan, Georgia, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Newnan features a humid subtropical climate (Cfa).Temperatures typically range between 8 °C (46 °F) and 26 °C (80 °F) through the year, but rarely can drop to -11 °C (12 °F) or can rise to as high as 37 °C (99 °F).The average annual precipitation amounts to about 1386 mm (54.6 inches) and receives 138 rainy days on the 1 mm (0.04 inches) threshold annually.Newnan enjoys an average of 3114 hours of sunshine throughout the year, and daylight varies from 9 hours 58 minutes to 14 hours 18 minutes per day.

Monthly average temperatures in Newnan, Georgia, United States §

The warmest months in Newnan are June, July and August, with daily mean temperatures ranging from 25 to 26 °C (77 - 80 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 8 to 11 °C (46 - 52 °F) throughout the day. On average each year, Newnan experiences 146 days above 25 °C (77.0 °F) and 25 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Newnan, 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 25°C
(77°F)		 26°C
(79°F)		 30°C
(86°F)		 29°C
(85°F)		 34°C
(93°F)		 34°C
(93°F)		 35°C
(95°F)		 35°C
(95°F)		 36°C
(97°F)		 37°C
(99°F)		 26°C
(78°F)		 24°C
(76°F)
Mean maximum 22°C
(72°F)		 25°C
(77°F)		 27°C
(81°F)		 28°C
(83°F)		 32°C
(90°F)		 32°C
(90°F)		 34°C
(94°F)		 34°C
(93°F)		 33°C
(92°F)		 31°C
(89°F)		 25°C
(77°F)		 22°C
(72°F)
Average high 13°C
(55°F)		 16°C
(62°F)		 19°C
(67°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
(76°F)		 17°C
(64°F)		 14°C
(58°F)
Daily mean 8°C
(46°F)		 11°C
(52°F)		 14°C
(57°F)		 17°C
(63°F)		 22°C
(71°F)		 25°C
(77°F)		 26°C
(80°F)		 26°C
(79°F)		 24°C
(75°F)		 19°C
(66°F)		 11°C
(53°F)		 9°C
(49°F)
Average low 3°C
(38°F)		 6°C
(43°F)		 8°C
(47°F)		 11°C
(52°F)		 17°C
(62°F)		 20°C
(69°F)		 22°C
(72°F)		 22°C
(72°F)		 19°C
(67°F)		 14°C
(58°F)		 6°C
(43°F)		 5°C
(41°F)
Mean minimum -6°C
(21°F)		 -3°C
(26°F)		 -3°C
(27°F)		 2°C
(35°F)		 8°C
(47°F)		 16°C
(60°F)		 19°C
(66°F)		 18°C
(65°F)		 13°C
(56°F)		 4°C
(40°F)		 -2°C
(28°F)		 -4°C
(25°F)
Minimum -11°C
(12°F)		 -5°C
(23°F)		 -5°C
(22°F)		 -1°C
(30°F)		 5°C
(41°F)		 12°C
(54°F)		 16°C
(61°F)		 16°C
(61°F)		 10°C
(51°F)		 -1°C
(31°F)		 -6°C
(22°F)		 -6°C
(21°F)

Compare climate in Newnan with other places

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

Monthly average precipitation in Newnan, Georgia, United States §

Newnan usually has the most precipitation in February, August and December, with an average of 13 rainy days and 139 mm (5.5 inches) of precipitation per month.The driest months in Newnan are January, May and November. On average, 92 mm (3.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Newnan, 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) 106 (4.2) 142 (5.6) 119 (4.7) 122 (4.8) 90 (3.5) 118 (4.6) 113 (4.4) 132 (5.2) 106 (4.2) 115 (4.5) 80 (3.2) 142 (5.6)
Average precipitation days (≥ 1 mm) 9 13 13 8 10 15 18 16 8 8 8 12

Monthly sunshine hours in Newnan, Georgia, United States §

The sunniest months in Newnan are May, July and August, when the sun shines an average of 10 hours 21 minutes a day.Least sunny months in Newnan: January, February and December receive an average of 5 hours 46 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Newnan, 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 165 170 238 279 314 307 336 313 295 265 239 188
Mean daily daylight hours 10h 12m 10h 59m 11h 59m 13h 1m 13h 53m 14h 18m 14h 4m 13h 19m 12h 19m 11h 18m 10h 24m 9h 58m

Solar UV radiation in Newnan, Georgia, United States §

Newnan experiences the highest level of ultraviolet (UV) radiation in May, June and July, when the maximum UV index can reach values of 11 - 11, which corresponds to the Extreme category of sun exposure.January, November 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 Newnan UV Index data.

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