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Monthly climate in Flat Rock, Michigan, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Flat Rock features a humid continental climate (Dfa).Temperatures typically range between -2 °C (29 °F) and 24 °C (75 °F) through the year, but rarely can drop to -23 °C (-9 °F) or can rise to as high as 32 °C (89 °F).The average annual precipitation amounts to about 1099 mm (43.3 inches) and receives 134 rainy days on the 1 mm (0.04 inches) threshold annually.Flat Rock enjoys an average of 2927 hours of sunshine throughout the year, and daylight varies from 9 hours 8 minutes to 15 hours 11 minutes per day.

Monthly average temperatures in Flat Rock, Michigan, United States §

The warmest months in Flat Rock are June, July and August, with daily mean temperatures ranging from 21 to 24 °C (69 - 75 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -2 to 1 °C (29 - 34 °F) throughout the day. On average each year, Flat Rock experiences 51 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 Flat Rock, Michigan, 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 12°C
(54°F)		 14°C
(57°F)		 16°C
(61°F)		 20°C
(69°F)		 27°C
(81°F)		 30°C
(87°F)		 31°C
(89°F)		 32°C
(89°F)		 30°C
(87°F)		 27°C
(81°F)		 18°C
(64°F)		 13°C
(55°F)
Mean maximum 9°C
(48°F)		 10°C
(51°F)		 14°C
(57°F)		 18°C
(65°F)		 25°C
(77°F)		 29°C
(84°F)		 31°C
(87°F)		 30°C
(86°F)		 28°C
(84°F)		 25°C
(77°F)		 14°C
(58°F)		 11°C
(52°F)
Average high 1°C
(33°F)		 1°C
(35°F)		 5°C
(42°F)		 10°C
(51°F)		 17°C
(63°F)		 23°C
(74°F)		 27°C
(80°F)		 26°C
(79°F)		 23°C
(73°F)		 16°C
(61°F)		 7°C
(45°F)		 3°C
(38°F)
Daily mean -2°C
(29°F)		 -1°C
(30°F)		 2°C
(37°F)		 7°C
(46°F)		 14°C
(58°F)		 21°C
(69°F)		 24°C
(75°F)		 23°C
(74°F)		 20°C
(68°F)		 13°C
(57°F)		 5°C
(41°F)		 1°C
(34°F)
Average low -4°C
(25°F)		 -4°C
(25°F)		 -0°C
(32°F)		 5°C
(41°F)		 12°C
(53°F)		 18°C
(64°F)		 21°C
(70°F)		 20°C
(69°F)		 17°C
(63°F)		 11°C
(52°F)		 3°C
(37°F)		 -1°C
(31°F)
Mean minimum -14°C
(8°F)		 -13°C
(9°F)		 -7°C
(19°F)		 -1°C
(30°F)		 4°C
(40°F)		 13°C
(56°F)		 17°C
(63°F)		 16°C
(61°F)		 11°C
(53°F)		 4°C
(40°F)		 -4°C
(25°F)		 -8°C
(18°F)
Minimum -22°C
(-8°F)		 -23°C
(-9°F)		 -11°C
(12°F)		 -4°C
(26°F)		 -0°C
(32°F)		 10°C
(50°F)		 16°C
(62°F)		 14°C
(58°F)		 9°C
(48°F)		 2°C
(36°F)		 -10°C
(15°F)		 -16°C
(4°F)

Compare climate in Flat Rock with other places

Compare temperature, precipitation, sunshine, UV index in Flat Rock, Michigan, United States with other places around the world.

Monthly average precipitation in Flat Rock, Michigan, United States §

Flat Rock usually has the most precipitation in May, October and November, with an average of 12 rainy days and 114 mm (4.5 inches) of precipitation per month.The driest months in Flat Rock are August, September and December. On average, 74 mm (2.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Flat Rock, Michigan, 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) 85 (3.3) 83 (3.3) 88 (3.5) 101 (4.0) 121 (4.8) 83 (3.3) 96 (3.8) 80 (3.2) 68 (2.7) 118 (4.6) 102 (4.0) 74 (2.9)
Average precipitation days (≥ 1 mm) 9 12 10 13 14 11 11 10 9 13 10 12

Monthly sunshine hours in Flat Rock, Michigan, United States §

The sunniest months in Flat Rock are June, July and August, when the sun shines an average of 11 hours 13 minutes a day.Least sunny months in Flat Rock: 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 Flat Rock, Michigan, 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 110 164 246 243 289 337 358 335 291 230 174 144
Mean daily daylight hours 9h 29m 10h 35m 11h 58m 13h 23m 14h 35m 15h 11m 14h 51m 13h 47m 12h 25m 11h 0m 9h 46m 9h 8m

Solar UV radiation in Flat Rock, Michigan, United States §

Flat Rock 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, February 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 Flat Rock UV Index data.

Average daily maximum UV levels by month for Flat Rock, Michigan, 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) 2 4 5 9 9 10 10 9 8 6 4 2