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Monthly climate in Southport, Indiana, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Southport features a humid subtropical climate (Cfa).Temperatures typically range between -1 °C (30 °F) and 25 °C (77 °F) through the year, but rarely can drop to -29 °C (-19 °F) or can rise to as high as 34 °C (94 °F).The average annual precipitation amounts to about 1199 mm (47.2 inches) and receives 131 rainy days on the 1 mm (0.04 inches) threshold annually.Southport enjoys an average of 2879 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 Southport, Indiana, United States §

The warmest months in Southport are June, July and August, with daily mean temperatures ranging from 23 to 25 °C (74 - 77 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -1 to 2 °C (30 - 36 °F) throughout the day. On average each year, Southport experiences 104 days above 25 °C (77.0 °F) and 89 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Southport, Indiana, 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)		 24°C
(75°F)		 29°C
(84°F)		 33°C
(92°F)		 34°C
(93°F)		 34°C
(94°F)		 34°C
(93°F)		 33°C
(92°F)		 32°C
(91°F)		 26°C
(79°F)		 18°C
(64°F)
Mean maximum 15°C
(59°F)		 18°C
(65°F)		 21°C
(69°F)		 27°C
(81°F)		 31°C
(87°F)		 33°C
(92°F)		 33°C
(92°F)		 32°C
(91°F)		 32°C
(90°F)		 29°C
(85°F)		 20°C
(68°F)		 16°C
(62°F)
Average high 3°C
(37°F)		 5°C
(42°F)		 11°C
(52°F)		 16°C
(62°F)		 23°C
(73°F)		 28°C
(82°F)		 30°C
(85°F)		 28°C
(83°F)		 26°C
(80°F)		 19°C
(67°F)		 10°C
(50°F)		 7°C
(44°F)
Daily mean -1°C
(30°F)		 1°C
(34°F)		 6°C
(43°F)		 11°C
(52°F)		 18°C
(65°F)		 23°C
(74°F)		 25°C
(77°F)		 23°C
(74°F)		 21°C
(70°F)		 14°C
(58°F)		 5°C
(42°F)		 2°C
(36°F)
Average low -5°C
(24°F)		 -3°C
(26°F)		 1°C
(35°F)		 6°C
(44°F)		 13°C
(56°F)		 18°C
(65°F)		 20°C
(69°F)		 19°C
(66°F)		 16°C
(61°F)		 10°C
(49°F)		 1°C
(34°F)		 -2°C
(29°F)
Mean minimum -19°C
(-1°F)		 -16°C
(3°F)		 -9°C
(16°F)		 -3°C
(26°F)		 3°C
(38°F)		 13°C
(55°F)		 15°C
(59°F)		 13°C
(55°F)		 8°C
(47°F)		 0°C
(33°F)		 -8°C
(18°F)		 -13°C
(8°F)
Minimum -29°C
(-19°F)		 -20°C
(-4°F)		 -16°C
(4°F)		 -6°C
(22°F)		 -2°C
(29°F)		 10°C
(50°F)		 13°C
(56°F)		 11°C
(53°F)		 6°C
(43°F)		 -1°C
(30°F)		 -17°C
(2°F)		 -19°C
(-2°F)

Compare climate in Southport with other places

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

Monthly average precipitation in Southport, Indiana, United States §

Southport usually has the most precipitation in March, May and July, with an average of 13 rainy days and 122 mm (4.8 inches) of precipitation per month.The driest months in Southport are January, September and December. On average, 81 mm (3.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Southport, Indiana, 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) 82 (3.2) 93 (3.7) 127 (5.0) 94 (3.7) 132 (5.2) 107 (4.2) 108 (4.2) 101 (4.0) 80 (3.2) 103 (4.0) 93 (3.7) 80 (3.2)
Average precipitation days (≥ 1 mm) 8 12 13 11 14 12 12 12 7 11 9 10

Monthly sunshine hours in Southport, Indiana, United States §

The sunniest months in Southport are June, July and August, when the sun shines an average of 10 hours 48 minutes a day.Least sunny months in Southport: January, February and December receive an average of 4 hours 56 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Southport, Indiana, 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 116 156 213 237 274 326 343 324 285 234 189 175
Mean daily daylight hours 9h 41m 10h 42m 11h 58m 13h 17m 14h 23m 14h 56m 14h 38m 13h 39m 12h 23m 11h 5m 9h 57m 9h 22m

Solar UV radiation in Southport, Indiana, United States §

Southport experiences the highest level of ultraviolet (UV) radiation in May, June and July, when the maximum UV index can reach values of 10 - 11, which corresponds to the Very High / Extreme 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 Southport UV Index data.

Average daily maximum UV levels by month for Southport, Indiana, 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 11 10 9 8 6 4 3