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United States › Michigan › Monroe County › Climate Station DETROIT METRO AP, MI US Distance 23.2 mi Normals 1991–2020

30-year climate normals

Monroe County Climate and Weather Averages

Hottest month — July

83.7°

average daily high. The coldest month is January, averaging a low of 19.2°F.

Monroe County gets 34.32" of precipitation a year and 45" of snow, and 31% of it falls in May, Jun, Jul.

Temperature through the year

Each bar spans the average daily low to the average daily high for that month.

20° 40° 60° 80° JanFebMarAprMayJunJulAugSepOctNovDec
MonthAvg highAvg low PrecipSnow
January 32.3° 19.2° 2.23" 14.0"
February 35.2° 20.8° 2.08" 12.5"
March 45.9° 28.6° 2.43" 6.2"
April 58.7° 39.1° 3.26" 1.5"
May 70.3° 50.2° 3.72" 0.0"
June 79.7° 60.2° 3.26" 0.0"
July 83.7° 64.4° 3.51" 0.0"
August 81.4° 63.2° 3.26" 0.0"
September 74.4° 55.5° 3.22" 0.0"
October 62.0° 44.0° 2.53" 0.0"
November 48.6° 33.9° 2.57" 1.9"
December 37.2° 25.3° 2.25" 8.9"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 31% falling in the wettest three months (May, Jun, Jul).

January 2.23"
February 2.08"
March 2.43"
April 3.26"
May 3.72"
June 3.26"
July 3.51"
August 3.26"
September 3.22"
October 2.53"
November 2.57"
December 2.25"
Annual total 34.32"

What this climate costs you

Degree days measure how hard a building has to work to stay comfortable. They are the reason two identical houses have very different power bills, and they are the link between the weather here and what you pay every month.

Cooling degree days How much air conditioning the climate demands 847
Heating degree days How much heating the climate demands 6,067
Approximate annual cooling cost At 22.01¢/kWh, Michigan average $186
Approximate annual electric heating cost Lower where heating is gas rather than electric $467

These are rough planning figures from degree days and the state electricity price, not a bill estimate. House size, insulation and fuel type move them a lot. See the full cost of owning a home in Monroe County, where electricity is one line of eight.

Common questions

What is the weather like in Monroe County?

Monroe County averages a high of 83.7°F in July and a low of 19.2°F in January. Annual precipitation is 34.32 inches, including 45 inches of snow.

When is the rainy season in Monroe County?

The wettest stretch is May, Jun, Jul, which accounts for 31% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Monroe County?

The average daily high in July, the hottest month, is 83.7°F. That drives 847 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Monroe County?

Yes. Monroe County averages 45 inches of snow a year.

Sources

  • Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station DETROIT METRO AP, MI US (USW00094847), 23.2 miles from the county centroid.
  • Heating and cooling degree days — NOAA, same station and period.
  • Electricity price — US Energy Information Administration, Electric Power Monthly Table 5.6.A, Michigan residential average.
  • Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.