30-year climate normals

Allen Parish Climate and Weather Averages

Hottest month — August

91.1°

average daily high. The coldest month is January, averaging a low of 39.2°F.

Allen Parish gets 61.75" of precipitation a year, and 27% of it falls in Nov, Dec, Jan.

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	59.2°	39.2°	6.42"
February	63.4°	43.3°	4.66"
March	70.2°	49.7°	4.09"
April	76.7°	56.0°	5.10"
May	83.3°	63.7°	5.12"
June	88.5°	69.8°	5.75"
July	90.3°	71.9°	5.57"
August	91.1°	71.5°	5.08"
September	86.9°	66.9°	5.06"
October	78.6°	56.5°	4.58"
November	68.6°	47.1°	4.81"
December	61.3°	41.5°	5.51"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 27% falling in the wettest three months (Nov, Dec, Jan).

January 6.42"

February 4.66"

March 4.09"

April 5.10"

May 5.12"

June 5.75"

July 5.57"

August 5.08"

September 5.06"

October 4.58"

November 4.81"

December 5.51"

Annual total 61.75"

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 2,411

Heating degree days How much heating the climate demands 1,851

Approximate annual cooling cost At 14.15¢/kWh, Louisiana average $341

Approximate annual electric heating cost Lower where heating is gas rather than electric $92

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 Allen Parish, where electricity is one line of eight.

Common questions

What is the weather like in Allen Parish?

Allen Parish averages a high of 91.1°F in August and a low of 39.2°F in January. Annual precipitation is 61.75 inches, with essentially no snow.

When is the rainy season in Allen Parish?

The wettest stretch is Nov, Dec, Jan, which accounts for 27% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Allen Parish?

The average daily high in August, the hottest month, is 91.1°F. That drives 2,411 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Allen Parish?

Effectively no. Measurable snowfall is rare in Allen Parish.

Sources

Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station OBERLIN FIRE TWR, LA US (USC00166938), 4.3 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, Louisiana residential average.
Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.