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Monthly climate in Petersburg, Indiana, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Petersburg features a humid subtropical climate (Cfa). Temperatures typically range between 1 °C (34 °F) and 26 °C (80 °F) through the year, but rarely can drop to -19 °C (-2 °F) or can rise to as high as 37 °C (99 °F). The average annual precipitation amounts to about 1292 mm (50.9 inches) and receives 122 rainy days on the 1 mm (0.04 inches) threshold annually. Petersburg enjoys an average of 2958 hours of sunshine throughout the year, and daylight varies from 9 hours 30 minutes to 14 hours 48 minutes per day.

Monthly average temperatures in Petersburg, Indiana, United States §

The warmest months in Petersburg 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 1 to 4 °C (34 - 40 °F) throughout the day. On average each year, Petersburg experiences 122 days above 25 °C (77.0 °F) and 67 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Petersburg, 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 20°C
(68°F)		 25°C
(77°F)		 25°C
(77°F)		 29°C
(85°F)		 34°C
(93°F)		 35°C
(95°F)		 37°C
(99°F)		 35°C
(95°F)		 34°C
(94°F)		 34°C
(94°F)		 27°C
(81°F)		 21°C
(71°F)
Mean maximum 17°C
(63°F)		 20°C
(68°F)		 23°C
(73°F)		 28°C
(83°F)		 32°C
(90°F)		 34°C
(93°F)		 35°C
(95°F)		 34°C
(93°F)		 33°C
(91°F)		 31°C
(88°F)		 22°C
(72°F)		 19°C
(66°F)
Average high 5°C
(41°F)		 8°C
(47°F)		 14°C
(57°F)		 19°C
(66°F)		 25°C
(77°F)		 29°C
(85°F)		 31°C
(88°F)		 30°C
(85°F)		 28°C
(82°F)		 21°C
(70°F)		 12°C
(54°F)		 9°C
(49°F)
Daily mean 1°C
(34°F)		 3°C
(38°F)		 8°C
(48°F)		 13°C
(56°F)		 20°C
(68°F)		 25°C
(76°F)		 26°C
(80°F)		 25°C
(77°F)		 22°C
(73°F)		 16°C
(61°F)		 7°C
(45°F)		 4°C
(40°F)
Average low -3°C
(28°F)		 -1°C
(30°F)		 4°C
(39°F)		 8°C
(47°F)		 15°C
(60°F)		 20°C
(68°F)		 22°C
(72°F)		 20°C
(69°F)		 17°C
(63°F)		 11°C
(52°F)		 2°C
(36°F)		 0°C
(33°F)
Mean minimum -14°C
(6°F)		 -14°C
(7°F)		 -7°C
(19°F)		 -2°C
(29°F)		 5°C
(42°F)		 14°C
(58°F)		 16°C
(62°F)		 14°C
(58°F)		 9°C
(48°F)		 2°C
(35°F)		 -6°C
(21°F)		 -9°C
(15°F)
Minimum -19°C
(-2°F)		 -17°C
(3°F)		 -13°C
(8°F)		 -4°C
(25°F)		 2°C
(35°F)		 10°C
(50°F)		 15°C
(59°F)		 13°C
(56°F)		 8°C
(46°F)		 -2°C
(29°F)		 -12°C
(11°F)		 -16°C
(3°F)

Compare climate in Petersburg with other places

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

Monthly average precipitation in Petersburg, Indiana, United States §

Petersburg usually has the most precipitation in March, May and June, with an average of 12 rainy days and 137 mm (5.4 inches) of precipitation per month. The driest months in Petersburg are July, August and September. On average, 81 mm (3.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Petersburg, 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) 91 (3.6) 117 (4.6) 147 (5.8) 124 (4.9) 137 (5.4) 125 (4.9) 77 (3.0) 89 (3.5) 77 (3.0) 105 (4.1) 98 (3.8) 104 (4.1)
Average precipitation days (≥ 1 mm) 8 11 12 11 14 11 10 9 7 10 9 10

Monthly sunshine hours in Petersburg, Indiana, United States §

The sunniest months in Petersburg are June, July and August, when the sun shines an average of 10 hours 56 minutes a day. Least sunny months in Petersburg: January, February and December receive an average of 5 hours 6 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Petersburg, 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 126 156 212 251 279 329 354 322 292 246 204 181
Mean daily daylight hours 9h 48m 10h 45m 11h 58m 13h 13m 14h 17m 14h 48m 14h 31m 13h 35m 12h 23m 11h 8m 10h 3m 9h 30m

Solar UV radiation in Petersburg, Indiana, United States §

Petersburg experiences the highest level of ultraviolet (UV) radiation in April, May and June, 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 Petersburg UV Index data.

Average daily maximum UV levels by month for Petersburg, 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 10 10 11 10 9 9 6 4 3

Detailed Monthly Weather Insights for Petersburg, Indiana, United States

Discover in-depth weather details for every month in Petersburg. Click through the links below for comprehensive overviews of temperature trends, precipitation levels, sunshine hours, and solar UV radiation specifics. Whether planning a visit or simply curious about Petersburg's climate nuances, these monthly breakdowns provide the information you need for an informed understanding of what to expect throughout the year.

Each link leads to a detailed account of the typical weather conditions for that month, providing both locals and tourists with vital information to plan their daily activities, wardrobe, and travel itineraries accordingly.