This weather has a price Keeping the median St. Louis County home comfortable runs roughly $633 a year in heating and cooling alone. See where it lands in the monthly bill

30-year climate normals

St. Louis County Climate and Weather Averages

Hottest month: July

77.2°

average daily high. The coldest month is January, averaging a low of -1.5°F.

St. Louis County gets 27.58" of precipitation a year, and 42% of it falls in Jun, Jul, Aug.

Temperature through the year

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

Month	Avg high	Avg low	Precip
January	16.5°	-1.5°	0.77"
February	22.1°	1.7°	0.70"
March	35.3°	14.3°	1.16"
April	49.0°	27.6°	1.95"
May	63.1°	40.7°	3.00"
June	72.3°	51.1°	4.25"
July	77.2°	55.6°	3.92"
August	75.5°	53.8°	3.49"
September	66.0°	45.3°	3.44"
October	50.9°	33.4°	2.55"
November	34.5°	19.9°	1.35"
December	21.8°	6.4°	1.00"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 42% falling in the wettest three months (Jun, Jul, Aug).

January 0.77"

February 0.70"

March 1.16"

April 1.95"

May 3.00"

June 4.25"

July 3.92"

August 3.49"

September 3.44"

October 2.55"

November 1.35"

December 1.00"

Annual total 27.58"

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 228

Heating degree days How much heating the climate demands 9,718

Approximate annual cooling cost At 17.45¢/kWh, Minnesota average $40

Approximate annual electric heating cost Lower where heating is gas rather than electric $594

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 St. Louis County, where electricity is one line of eight.

Common questions

What is the weather like in St. Louis County?

St. Louis County averages a high of 77.2°F in July and a low of -1.5°F in January. Annual precipitation is 27.58 inches, with essentially no snow.

When is the rainy season in St. Louis County?

The wettest stretch is Jun, Jul, Aug, which accounts for 42% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in St. Louis County?

The average daily high in July, the hottest month, is 77.2°F. That drives 228 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in St. Louis County?

The weather station used for St. Louis County, EVELETH WWTP, MN US, reports temperature and precipitation but not snowfall, so there is no snow normal to quote here. Precipitation that falls as snow is still counted in the 27.58 inches above, measured as melted water.

Sources

Temperature, precipitation and snowfall normals: NOAA National Centers for Environmental Information, 1991 to 2020 Monthly Climate Normals, station EVELETH WWTP, MN US (USC00212645), 8.4 miles from the county centroid.
Heating and cooling degree days: NOAA, same station and period.
Annual figures on this page are the sum of that station's twelve monthly normals. NOAA also publishes a separately-computed annual normal, which can differ from the monthly sum by a few percent; we use the monthly series because the month-by-month breakdown above has to come from it.
Electricity price: US Energy Information Administration, Electric Power Monthly Table 5.6.A, Minnesota residential average.
Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.