30-year climate normals

Ray County Climate and Weather Averages

Hottest month — July

87.2°

average daily high. The coldest month is January, averaging a low of 14.9°F.

Ray County gets 42.06" of precipitation a year, and 39% 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.

Month	Avg high	Avg low	Precip
January	37.5°	14.9°	1.28"
February	42.4°	19.9°	1.64"
March	53.9°	29.9°	2.73"
April	64.8°	39.8°	4.12"
May	74.4°	51.2°	6.31"
June	83.2°	61.3°	5.38"
July	87.2°	66.1°	4.92"
August	85.7°	62.5°	4.18"
September	78.6°	54.4°	4.04"
October	67.2°	41.4°	3.35"
November	53.1°	29.9°	2.41"
December	41.6°	20.6°	1.70"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 39% falling in the wettest three months (May, Jun, Jul).

January 1.28"

February 1.64"

March 2.73"

April 4.12"

May 6.31"

June 5.38"

July 4.92"

August 4.18"

September 4.04"

October 3.35"

November 2.41"

December 1.70"

Annual total 42.06"

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 1,099

Heating degree days How much heating the climate demands 5,597

Approximate annual cooling cost At 13.68¢/kWh, Missouri average $150

Approximate annual electric heating cost Lower where heating is gas rather than electric $268

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 Ray County, where electricity is one line of eight.

Common questions

What is the weather like in Ray County?

Ray County averages a high of 87.2°F in July and a low of 14.9°F in January. Annual precipitation is 42.06 inches, with essentially no snow.

When is the rainy season in Ray County?

The wettest stretch is May, Jun, Jul, which accounts for 39% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Ray County?

The average daily high in July, the hottest month, is 87.2°F. That drives 1,099 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Ray County?

Effectively no. Measurable snowfall is rare in Ray County.

Sources

Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station RICHMOND 3S, MO US (USC00237116), 4.8 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, Missouri residential average.
Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.