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Monthly climate in Bluffton, Indiana, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Bluffton features a humid continental climate (Dfa).Temperatures typically range between -2 °C (29 °F) and 25 °C (76 °F) through the year, but rarely can drop to -26 °C (-14 °F) or can rise to as high as 36 °C (97 °F).The average annual precipitation amounts to about 1105 mm (43.5 inches) and receives 133 rainy days on the 1 mm (0.04 inches) threshold annually.Bluffton enjoys an average of 2806 hours of sunshine throughout the year, and daylight varies from 9 hours 17 minutes to 15 hours 2 minutes per day.

Monthly average temperatures in Bluffton, Indiana, United States §

The warmest months in Bluffton are June, July and August, with daily mean temperatures ranging from 22 to 25 °C (73 - 76 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -2 to 2 °C (29 - 35 °F) throughout the day. On average each year, Bluffton experiences 95 days above 25 °C (77.0 °F) and 96 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Bluffton, 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
(72°F)		 25°C
(76°F)		 29°C
(84°F)		 34°C
(94°F)		 34°C
(94°F)		 36°C
(97°F)		 35°C
(95°F)		 33°C
(92°F)		 33°C
(91°F)		 26°C
(80°F)		 17°C
(63°F)
Mean maximum 14°C
(58°F)		 17°C
(63°F)		 21°C
(69°F)		 27°C
(80°F)		 31°C
(88°F)		 33°C
(92°F)		 33°C
(92°F)		 32°C
(90°F)		 32°C
(90°F)		 30°C
(85°F)		 19°C
(67°F)		 16°C
(61°F)
Average high 2°C
(36°F)		 4°C
(39°F)		 10°C
(51°F)		 15°C
(60°F)		 22°C
(72°F)		 27°C
(81°F)		 29°C
(85°F)		 28°C
(83°F)		 26°C
(79°F)		 19°C
(66°F)		 9°C
(49°F)		 6°C
(43°F)
Daily mean -2°C
(29°F)		 -0°C
(31°F)		 5°C
(41°F)		 10°C
(51°F)		 17°C
(63°F)		 22°C
(73°F)		 25°C
(76°F)		 23°C
(74°F)		 20°C
(69°F)		 14°C
(57°F)		 5°C
(41°F)		 2°C
(35°F)
Average low -5°C
(23°F)		 -5°C
(24°F)		 0°C
(33°F)		 5°C
(41°F)		 12°C
(54°F)		 18°C
(64°F)		 20°C
(68°F)		 18°C
(65°F)		 15°C
(60°F)		 9°C
(49°F)		 1°C
(34°F)		 -2°C
(28°F)
Mean minimum -19°C
(-2°F)		 -17°C
(1°F)		 -9°C
(16°F)		 -5°C
(24°F)		 2°C
(37°F)		 12°C
(54°F)		 14°C
(57°F)		 12°C
(54°F)		 8°C
(46°F)		 -0°C
(32°F)		 -8°C
(18°F)		 -13°C
(10°F)
Minimum -26°C
(-14°F)		 -23°C
(-9°F)		 -13°C
(8°F)		 -7°C
(20°F)		 -1°C
(30°F)		 9°C
(48°F)		 11°C
(52°F)		 10°C
(49°F)		 4°C
(39°F)		 -2°C
(29°F)		 -16°C
(4°F)		 -22°C
(-7°F)

Compare climate in Bluffton with other places

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

Monthly average precipitation in Bluffton, Indiana, United States §

Bluffton usually has the most precipitation in May, June and July, with an average of 13 rainy days and 114 mm (4.5 inches) of precipitation per month.The driest months in Bluffton are January, September and December. On average, 69 mm (2.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Bluffton, 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) 75 (2.9) 84 (3.3) 102 (4.0) 93 (3.7) 126 (4.9) 110 (4.3) 105 (4.1) 97 (3.8) 67 (2.6) 101 (4.0) 82 (3.2) 64 (2.5)
Average precipitation days (≥ 1 mm) 8 12 12 12 15 13 12 11 8 12 9 9

Monthly sunshine hours in Bluffton, Indiana, United States §

The sunniest months in Bluffton are June, July and August, when the sun shines an average of 10 hours 43 minutes a day.Least sunny months in Bluffton: January, February and December receive an average of 4 hours 42 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Bluffton, 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 109 160 219 226 266 318 344 322 278 225 174 159
Mean daily daylight hours 9h 36m 10h 39m 11h 58m 13h 19m 14h 28m 15h 2m 14h 43m 13h 42m 12h 24m 11h 3m 9h 53m 9h 17m

Solar UV radiation in Bluffton, Indiana, United States §

Bluffton experiences the highest level of ultraviolet (UV) radiation in April, June and July, when the maximum UV index can reach values of 9 - 10, which corresponds to the Very High category of sun exposure.January, November and December are in the Low / 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 Bluffton UV Index data.

Average daily maximum UV levels by month for Bluffton, 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 9 10 10 9 8 6 4 2