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Monthly climate in Hillsboro, Ohio, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Hillsboro features a humid subtropical climate (Cfa).Temperatures typically range between 0 °C (33 °F) and 24 °C (76 °F) through the year, but rarely can drop to -25 °C (-12 °F) or can rise to as high as 35 °C (94 °F).The average annual precipitation amounts to about 1352 mm (53.2 inches) and receives 141 rainy days on the 1 mm (0.04 inches) threshold annually.Hillsboro enjoys an average of 2874 hours of sunshine throughout the year, and daylight varies from 9 hours 26 minutes to 14 hours 52 minutes per day.

Monthly average temperatures in Hillsboro, Ohio, United States §

The warmest months in Hillsboro are June, July and August, with daily mean temperatures ranging from 22 to 24 °C (72 - 76 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 0 to 3 °C (33 - 38 °F) throughout the day. On average each year, Hillsboro experiences 104 days above 25 °C (77.0 °F) and 83 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Hillsboro, Ohio, 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 21°C
(69°F)		 25°C
(77°F)		 26°C
(79°F)		 29°C
(85°F)		 32°C
(89°F)		 33°C
(91°F)		 34°C
(93°F)		 33°C
(92°F)		 35°C
(94°F)		 34°C
(93°F)		 25°C
(78°F)		 18°C
(65°F)
Mean maximum 17°C
(62°F)		 20°C
(68°F)		 23°C
(74°F)		 27°C
(81°F)		 30°C
(87°F)		 32°C
(90°F)		 32°C
(91°F)		 32°C
(91°F)		 32°C
(90°F)		 29°C
(85°F)		 21°C
(70°F)		 17°C
(64°F)
Average high 4°C
(40°F)		 7°C
(45°F)		 12°C
(54°F)		 17°C
(63°F)		 23°C
(73°F)		 27°C
(81°F)		 29°C
(85°F)		 28°C
(83°F)		 26°C
(79°F)		 20°C
(68°F)		 11°C
(52°F)		 7°C
(45°F)
Daily mean 0°C
(33°F)		 2°C
(36°F)		 7°C
(44°F)		 12°C
(53°F)		 18°C
(65°F)		 22°C
(72°F)		 24°C
(76°F)		 23°C
(74°F)		 21°C
(69°F)		 15°C
(58°F)		 6°C
(43°F)		 3°C
(38°F)
Average low -3°C
(26°F)		 -2°C
(29°F)		 2°C
(35°F)		 7°C
(44°F)		 13°C
(56°F)		 18°C
(64°F)		 20°C
(68°F)		 19°C
(66°F)		 16°C
(61°F)		 10°C
(50°F)		 1°C
(35°F)		 -1°C
(31°F)
Mean minimum -16°C
(4°F)		 -13°C
(8°F)		 -9°C
(17°F)		 -4°C
(26°F)		 3°C
(39°F)		 12°C
(53°F)		 15°C
(59°F)		 13°C
(56°F)		 9°C
(48°F)		 1°C
(34°F)		 -7°C
(20°F)		 -10°C
(14°F)
Minimum -25°C
(-12°F)		 -19°C
(-2°F)		 -14°C
(8°F)		 -5°C
(23°F)		 -0°C
(32°F)		 7°C
(45°F)		 14°C
(57°F)		 12°C
(55°F)		 6°C
(42°F)		 -1°C
(30°F)		 -13°C
(8°F)		 -16°C
(3°F)

Compare climate in Hillsboro with other places

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

Monthly average precipitation in Hillsboro, Ohio, United States §

Hillsboro usually has the most precipitation in March, May and June, with an average of 13 rainy days and 136 mm (5.3 inches) of precipitation per month.The driest months in Hillsboro are January, August and September. On average, 89 mm (3.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Hillsboro, Ohio, 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) 111 (4.4) 134 (5.3) 129 (5.1) 134 (5.3) 140 (5.5) 126 (5.0) 89 (3.5) 96 (3.8) 103 (4.1) 97 (3.8) 111 (4.4)
Average precipitation days (≥ 1 mm) 9 13 13 12 14 14 12 13 8 13 9 11

Monthly sunshine hours in Hillsboro, Ohio, United States §

The sunniest months in Hillsboro are June, July and August, when the sun shines an average of 10 hours 38 minutes a day.Least sunny months in Hillsboro: January, February and December receive an average of 4 hours 37 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Hillsboro, Ohio, 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 119 147 229 239 284 314 346 318 283 239 196 154
Mean daily daylight hours 9h 45m 10h 43m 11h 58m 13h 15m 14h 19m 14h 52m 14h 34m 13h 37m 12h 23m 11h 7m 10h 0m 9h 26m

Solar UV radiation in Hillsboro, Ohio, United States §

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

Average daily maximum UV levels by month for Hillsboro, Ohio, 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 10 10 9 8 6 4 3