30-year climate normals

New Madrid County Climate and Weather Averages

Hottest month — July

90.3°

average daily high. The coldest month is January, averaging a low of 27.5°F.

New Madrid County gets 49.29" of precipitation a year, and 30% of it falls in Mar, Apr, May.

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	43.8°	27.5°	3.83"
February	48.6°	30.5°	3.60"
March	58.2°	38.6°	4.35"
April	69.1°	49.3°	5.08"
May	78.8°	58.8°	5.49"
June	87.2°	67.3°	4.17"
July	90.3°	70.7°	3.70"
August	89.2°	68.2°	2.58"
September	82.4°	60.4°	3.94"
October	71.8°	48.6°	3.95"
November	57.8°	38.1°	4.23"
December	47.1°	30.9°	4.37"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 30% falling in the wettest three months (Mar, Apr, May).

January 3.83"

February 3.60"

March 4.35"

April 5.08"

May 5.49"

June 4.17"

July 3.70"

August 2.58"

September 3.94"

October 3.95"

November 4.23"

December 4.37"

Annual total 49.29"

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 1,755

Heating degree days How much heating the climate demands 3,949

Approximate annual cooling cost At 13.68¢/kWh, Missouri average $240

Approximate annual electric heating cost Lower where heating is gas rather than electric $189

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 New Madrid County, where electricity is one line of eight.

Common questions

What is the weather like in New Madrid County?

New Madrid County averages a high of 90.3°F in July and a low of 27.5°F in January. Annual precipitation is 49.29 inches, with essentially no snow.

When is the rainy season in New Madrid County?

The wettest stretch is Mar, Apr, May, which accounts for 30% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in New Madrid County?

The average daily high in July, the hottest month, is 90.3°F. That drives 1,755 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in New Madrid County?

Effectively no. Measurable snowfall is rare in New Madrid County.

Sources

Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station NEW MADRID, MO US (USC00236045), 6.9 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.