30-year climate normals

Winston County Climate and Weather Averages

Hottest month — July

91.5°

average daily high. The coldest month is January, averaging a low of 33.9°F.

Winston County gets 57.51" of precipitation a year, and 29% of it falls in Feb, Mar, Apr.

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	55.0°	33.9°	5.05"
February	58.9°	37.1°	5.68"
March	67.8°	43.6°	5.47"
April	75.0°	50.9°	5.31"
May	82.5°	60.4°	4.96"
June	89.0°	67.4°	3.95"
July	91.5°	70.6°	4.62"
August	91.0°	70.0°	4.76"
September	86.2°	64.1°	4.05"
October	76.5°	52.6°	4.21"
November	64.8°	42.2°	4.21"
December	56.8°	36.2°	5.24"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 29% falling in the wettest three months (Feb, Mar, Apr).

January 5.05"

February 5.68"

March 5.47"

April 5.31"

May 4.96"

June 3.95"

July 4.62"

August 4.76"

September 4.05"

October 4.21"

November 4.21"

December 5.24"

Annual total 57.51"

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 2,114

Heating degree days How much heating the climate demands 2,631

Approximate annual cooling cost At 16.16¢/kWh, Mississippi average $342

Approximate annual electric heating cost Lower where heating is gas rather than electric $149

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 Winston County, where electricity is one line of eight.

Common questions

What is the weather like in Winston County?

Winston County averages a high of 91.5°F in July and a low of 33.9°F in January. Annual precipitation is 57.51 inches, with essentially no snow.

When is the rainy season in Winston County?

The wettest stretch is Feb, Mar, Apr, which accounts for 29% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Winston County?

The average daily high in July, the hottest month, is 91.5°F. That drives 2,114 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Winston County?

Effectively no. Measurable snowfall is rare in Winston County.

Sources

Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station LOUISVILLE, MS US (USC00225247), 4.4 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, Mississippi residential average.
Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.