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Monthly climate in Rockville, Indiana, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Rockville features a humid subtropical climate (Cfa).Temperatures typically range between -1 °C (30 °F) and 25 °C (78 °F) through the year, but rarely can drop to -28 °C (-19 °F) or can rise to as high as 36 °C (97 °F).The average annual precipitation amounts to about 1202 mm (47.3 inches) and receives 126 rainy days on the 1 mm (0.04 inches) threshold annually.Rockville enjoys an average of 2913 hours of sunshine throughout the year, and daylight varies from 9 hours 23 minutes to 14 hours 55 minutes per day.

Monthly average temperatures in Rockville, Indiana, United States §

The warmest months in Rockville are June, July and August, with daily mean temperatures ranging from 24 to 25 °C (75 - 78 °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, Rockville experiences 109 days above 25 °C (77.0 °F) and 88 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Rockville, 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
(65°F)		 22°C
(71°F)		 23°C
(74°F)		 28°C
(83°F)		 34°C
(94°F)		 36°C
(97°F)		 35°C
(95°F)		 35°C
(95°F)		 34°C
(93°F)		 33°C
(92°F)		 26°C
(78°F)		 18°C
(64°F)
Mean maximum 14°C
(58°F)		 17°C
(63°F)		 21°C
(70°F)		 27°C
(80°F)		 31°C
(88°F)		 34°C
(93°F)		 34°C
(93°F)		 33°C
(91°F)		 33°C
(91°F)		 30°C
(86°F)		 20°C
(68°F)		 17°C
(62°F)
Average high 3°C
(37°F)		 5°C
(42°F)		 11°C
(52°F)		 17°C
(62°F)		 23°C
(74°F)		 29°C
(84°F)		 30°C
(86°F)		 29°C
(84°F)		 27°C
(81°F)		 20°C
(68°F)		 10°C
(50°F)		 7°C
(44°F)
Daily mean -1°C
(30°F)		 1°C
(33°F)		 6°C
(43°F)		 11°C
(53°F)		 18°C
(65°F)		 24°C
(75°F)		 25°C
(78°F)		 24°C
(75°F)		 21°C
(71°F)		 14°C
(58°F)		 5°C
(42°F)		 2°C
(36°F)
Average low -5°C
(23°F)		 -4°C
(26°F)		 2°C
(35°F)		 6°C
(44°F)		 13°C
(56°F)		 19°C
(66°F)		 20°C
(69°F)		 19°C
(66°F)		 16°C
(61°F)		 10°C
(50°F)		 1°C
(34°F)		 -2°C
(29°F)
Mean minimum -19°C
(-2°F)		 -17°C
(1°F)		 -9°C
(16°F)		 -3°C
(27°F)		 4°C
(39°F)		 13°C
(56°F)		 15°C
(59°F)		 12°C
(55°F)		 8°C
(47°F)		 0°C
(33°F)		 -7°C
(19°F)		 -13°C
(9°F)
Minimum -28°C
(-19°F)		 -22°C
(-7°F)		 -17°C
(2°F)		 -5°C
(23°F)		 0°C
(32°F)		 10°C
(49°F)		 13°C
(55°F)		 12°C
(53°F)		 6°C
(43°F)		 -4°C
(25°F)		 -13°C
(9°F)		 -19°C
(-2°F)

Compare climate in Rockville with other places

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

Monthly average precipitation in Rockville, Indiana, United States §

Rockville usually has the most precipitation in March, May and October, with an average of 13 rainy days and 127 mm (5.0 inches) of precipitation per month.The driest months in Rockville are January, September and December. On average, 75 mm (2.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Rockville, 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) 84 (3.3) 88 (3.5) 122 (4.8) 106 (4.2) 140 (5.5) 113 (4.5) 103 (4.1) 100 (3.9) 64 (2.5) 118 (4.6) 87 (3.4) 75 (3.0)
Average precipitation days (≥ 1 mm) 9 12 13 10 14 11 11 10 6 12 8 10

Monthly sunshine hours in Rockville, Indiana, United States §

The sunniest months in Rockville are June, July and August, when the sun shines an average of 10 hours 57 minutes a day.Least sunny months in Rockville: January, February and December receive an average of 4 hours 59 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Rockville, 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 115 158 214 242 278 331 347 328 288 236 191 180
Mean daily daylight hours 9h 42m 10h 42m 11h 58m 13h 17m 14h 23m 14h 55m 14h 37m 13h 39m 12h 23m 11h 5m 9h 57m 9h 23m

Solar UV radiation in Rockville, Indiana, United States §

Rockville 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 Rockville UV Index data.

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