What is today's weather forecast for Mermentau, LA?

Today's forecast for Mermentau shows a high of 74 degrees and a low of 59 degrees Fahrenheit. A slight chance of showers between 1pm and 4pm.

What is the 7-day weather forecast for Mermentau, LA?

The 7-day forecast for Mermentau shows highs from 47 to 74 degrees and lows from 27 to 59 degrees Fahrenheit. Expect precipitation on 4 days with chances of 20% or higher.

Will it rain in Mermentau, LA this week?

Yes, rain is possible in Mermentau this week. Precipitation chances: Friday (20% chance), Saturday (50% chance), Sunday (20% chance), Tuesday (20% chance).

How accurate is the Mermentau weather forecast?

WeatherForYou provides highly accurate Mermentau forecasts using National Weather Service data and current conditions from the nearest available weather stations, often miles closer than regional airports, for the most precise local forecasts.

Mermentau, LA Weather Forecast and Current Conditions

Current Conditions From Nearby Station

Switch to Metric Units

56°F
Feels Like 56°F

Humidity 96% Dew Point 55°F Wind SE 5 MPH Barometer 30.02 in.

Solar Rad 11 w/m² Visibility 7 mi.

Report from a NOAA weather station 6.5 mi. NW of central Mermentau
at 7:15 AM Fri, Dec 12, 2025

Point Forecast at a Glance

FriDec 12

20%

SatDec 13

20%

SunDec 14

20%

MonDec 15

TueDec 16

WedDec 17

ThuDec 18

Jump to detailed forecast ↓

7-Day Temperature Trend

Week Ahead Summary

High temperatures drop from 74°F to a low of 47°F, then recover to 74°F by week's end. Unsettled weather expected with rain likely on at least 4 days.

Climate Context

Temperatures are expected to be near normal for this time of year, with highs around 63°F and lows around 44°F.

This Date in Weather History

1967 - From December 12th through the 20th a series of snowstorms buries Flagstaff, AZ with nearly 85 inches of snow.

Mermentau, LA 7 Day Weather Forecast Details

Friday Dec 12

Day: A slight chance of showers between 1pm and 4pm. Patchy fog before 9am. Otherwise, mostly sunny, with a high near 74. South wind around 5 mph becoming calm in the afternoon. Chance of precipitation is 20%.

Night: Patchy fog after midnight. Otherwise, partly cloudy, with a low around 59. Calm wind.

Saturday Dec 13

Day: A 20 percent chance of showers after noon. Patchy fog before 9am. Otherwise, mostly sunny, with a high near 73. Calm wind becoming south around 5 mph.

Night: A slight chance of showers, then a chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 49. Light and variable wind becoming north 5 to 10 mph after midnight. Chance of precipitation is 50%.

Sunday Dec 14

Day: A 20 percent chance of showers before noon. Mostly sunny, with a high near 58. North wind 10 to 20 mph, with gusts as high as 30 mph.

Night: Mostly clear, with a low around 27. Northeast wind 10 to 15 mph, with gusts as high as 25 mph.

Monday Dec 15

Day: Sunny, with a high near 47. Northeast wind around 5 mph.

Night: Partly cloudy, with a low around 33. Calm wind.

Tuesday Dec 16

Day: Partly sunny, with a high near 60. Calm wind becoming southeast around 5 mph.

Night: A 20 percent chance of showers. Mostly cloudy, with a low around 49.

Wednesday Dec 17

Day: Partly sunny, with a high near 69.

Night: Partly cloudy, with a low around 58.

Thursday Dec 18

Day: Mostly sunny, with a high near 74.

About Mermentau, LA

Mermentau is a village in Acadia Parish, Louisiana, United States. The population was 661 at the 2010 census. It is part of the Crowley Micropolitan Statistical Area.

Content from Wikipedia, licensed under CC BY-SA 3.0.

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Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.

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