This weather has a price Keeping the median Ottawa County home comfortable runs roughly $432 a year in heating and cooling alone. See where it lands in the monthly bill

30-year climate normals

Ottawa County Climate and Weather Averages

Hottest month: August

89.1°

average daily high. The coldest month is January, averaging a low of 23.2°F.

Ottawa County gets 45.8" of precipitation a year, and 38% of it falls in Apr, May, Jun.

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	44.2°	23.2°	1.90"
February	48.9°	26.9°	2.07"
March	59.2°	36.4°	2.96"
April	68.5°	45.5°	5.25"
May	75.9°	54.9°	6.77"
June	84.5°	63.8°	5.40"
July	88.9°	67.4°	4.00"
August	89.1°	64.7°	3.77"
September	81.3°	55.9°	5.15"
October	70.5°	45.2°	3.58"
November	57.8°	35.0°	2.89"
December	46.7°	26.2°	2.06"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 38% falling in the wettest three months (Apr, May, Jun).

January 1.90"

February 2.07"

March 2.96"

April 5.25"

May 6.77"

June 5.40"

July 4.00"

August 3.77"

September 5.15"

October 3.58"

November 2.89"

December 2.06"

Annual total 45.8"

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 1,381

Heating degree days How much heating the climate demands 4,376

Approximate annual cooling cost At 14.82¢/kWh, Oklahoma average $205

Approximate annual electric heating cost Lower where heating is gas rather than electric $227

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 Ottawa County, where electricity is one line of eight.

Common questions

What is the weather like in Ottawa County?

Ottawa County averages a high of 89.1°F in August and a low of 23.2°F in January. Annual precipitation is 45.8 inches, with essentially no snow.

When is the rainy season in Ottawa County?

The wettest stretch is Apr, May, Jun, which accounts for 38% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Ottawa County?

The average daily high in August, the hottest month, is 89.1°F. That drives 1,381 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Ottawa County?

The weather station used for Ottawa County, JOPLIN 24 N, MO 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 45.8 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 JOPLIN 24 N, MO US (USW00023908), 42.7 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, Oklahoma residential average.
Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.