What is the long range weather forecast for Mandeville, LA?

The Old Farmer's Almanac provides a 60-day extended weather forecast for Mandeville, LA. This includes temperature trends, precipitation predictions, and seasonal weather patterns based on our traditional forecasting methods combined with modern meteorological science.

How accurate is the Almanac long range weather forecast?

The Old Farmer's Almanac claims an 80% accuracy rate for its long range forecasts. Our forecasting method uses a secret formula that considers sunspot activity, tidal action, and other factors along with current meteorological conditions.

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Long-Range Weather Forecast for Mandeville, LA

Location Mandeville, LA

60-Day Weather Forecast

August 2026 Long Range Weather Forecast for Deep South
Dates	Weather Conditions
Aug 1-13	Scattered t-storms; warm, then cooler
Aug 14-21	Sunny north, t-storms south; mild
Aug 22-24	Scattered t-storms east, tropical storm threat west; warm
Aug 25-31	T-storms, then sunny; mild
August	temperature 81° (avg.) precipitation 6" (avg. north, 2" above south)

September 2026 Long Range Weather Forecast for Deep South
Dates	Weather Conditions
Sep 1-8	Sunny, then showers; cool, then warmer
Sep 9-14	Sunny, cool
Sep 15-23	Sunny, warm
Sep 24-30	Isolated showers; cool north, mild south
September	temperature 76° (1° below avg.) precipitation 2.5" (2" below avg.)

Map showing Old Farmer's Almanac long range weather region number 8

12-Month Long-Range Weather Outlook

November 2025 to October 2026

Winter will be warmer than normal, with the coldest periods in mid-December, early and late January, and early February. Precipitation and snowfall will be below normal, with the best chances for snow in the north in mid-November, late January, and early February. April and May will wind up warmer than normal, while precipitation will be above normal in the north and below south. Summer will be warmer than normal, with the hottest periods in mid-June and mid-July. Rainfall will be below normal in the north and above south. Watch for tropical storms in early June and late August. September and October temperatures will average above normal, with rainfall below normal.

See the complete 12-month weather forecast in The Old Farmer’s Almanac..

Weather Trend Graph

November 2025 to October 2026