The Old Farmer’s Almanac has issued its long-range weather forecast for August. Predictions indicate thunderstorms for many U.S. regions, with potential tropical storm or hurricane threats for coastal and southern areas. The forecast provides broad patterns, not specific daily conditions. The Almanac uses regional zones to show expected temperature and precipitation trends, indicating whether these will deviate from historical averages.

Accuracy of the Old Farmer’s Almanac

The Almanac claims about 80 percent accuracy for its forecasts. However, predicting weather with complete accuracy remains impossible. The publication relies on solar science, climatology, and meteorology, using solar patterns and historical weather conditions.

Regional Forecast Overview

Northeast

Scattered thunderstorms and warm temperatures start August. Heavier rain is expected in the north from August 7 to 10, with the south experiencing isolated showers and cooler weather. Sunny spells precede mid-month thunderstorms, with mild temperatures from August 19 onward. An average temperature of 67.5 degrees and around four inches of precipitation are forecast.

Atlantic Corridor

The month begins with scattered thunderstorms, followed by sunshine and warmth through August 14. A tropical storm threat exists in the southern region on August 15 and 16. The remainder of the month trends sunny, with cooler conditions later. Precipitation is expected at 2 inches, which is 2 inches below average.

Appalachians

Isolated thunderstorms and warm weather from August 1 to 12 give way to sunnier conditions from August 13 to 20. Scattered thunderstorms return toward the end of the month. The area is forecasted a 71-degree temperature, 1 degree below average, with about 2.5 inches of precipitation.

Southeast

Scattered thunderstorms and warm conditions start the month. The west faces isolated storms from August 12 to 14, while the east contends with a hurricane threat. Showers dominate from August 15 to 23, with thunderstorms in the west and sunshine in the east as the month ends. Mild conditions are expected, with some scattered thunderstorms.

Florida

Isolated thunderstorms and warmth mark the start. A hurricane threat looms from August 10 to 12, followed by thunderstorms and milder weather to August 24. The north will see sunshine at the end of the month, with thunderstorms continuing in the south. Precipitation is predicted at 8 inches, with the north and south differing from average by 2 inches.

Lower Great Lakes

The region starts with scattered thunderstorms and sunshine as temperatures shift from warm to cooler by August 16. Scattered thunderstorms follow from August 17 to 25, with heavy rain from August 26 to 28. The east expects rain, while the west remains sunny. Mild conditions wrap up the month.

Ohio Valley

The area enjoys sunny weather before thunderstorms and warm conditions until August 9. A sunny, mild period from August 10 to 19 follows, then scattered thunderstorms return from August 20 to 28. The month concludes sunny and mild, with an August temperature of 72.5 degrees, 1.5 degrees below average. Precipitation is about 1 inch below average.

Deep South

Scattered thunderstorms start August, with a cool trend through August 13. The north sees sunshine from August 14 to 21, while thunderstorms affect the south. A tropical storm threat occurs from August 23 to 25. The month ends with sunshine following thunderstorms.

Upper Midwest

August begins with isolated thunderstorms and warmth, then sunny and warm conditions prevail from August 8 to 12. The east stays sunny while the west experiences thunderstorms from August 13 to 18. Sunshine follows, with a return of thunderstorms, before ending with showers and cooler weather.

Heartland

The Heartland opens with northern thunderstorms and southern sunshine. Sunny and warm periods from August 8 to 15 precede thunderstorms from August 16 to 20. Isolated thunderstorms continue later. A temperature of 73 degrees, 2 degrees below average, and 4.5 inches of precipitation are forecast.

Texas-Oklahoma

Sunny conditions initiate August. Thunderstorms develop, leading to warm northern and hot southern weather. Heavy thunderstorms are expected August 10 to 12, followed by sunshine through August 22. A tropical storm threat exists from August 23 to 25.

High Plains

The northern High Plains begin sunny and hot, while the south starts with thunderstorms and cooler weather. Sunshine returns before isolated thunderstorms appear from August 11 to 19. Scattered thunderstorms and heat follow until August 23. The month concludes with sunshine and occasional storms.

Intermountain Region

August opens with sunshine in the north and storms in the south. From August 12 to 15, sunny conditions prevail. From August 16 to 22, the north remains sunny, with southern storms and heat. The month ends with isolated thunderstorms and warmth.

Desert Southwest

The month begins with scattered thunderstorms. Thunderstorms dominate in the east from August 6 to 11 while the west stays sunny. Sunny conditions follow from August 12 to 23. Eastern warmth and western heat precede isolated thunderstorms from August 24 to 31.

Pacific Northwest

After a sunny and hot start, the region experiences isolated thunderstorms. Sunshine returns August 6 to 21. From August 22 to 25, scattered showers bring cooler weather. The month ends sunny and hot, with a temperature of 69 degrees, 2 degrees above average.

Pacific Southwest

Mostly sunny conditions persist throughout August. Inland areas start hot, with warmer coastal weather. Isolated sprinkles may occur from August 10 to 17. Sunny and hot conditions then return, concluding with inland heat and cooler coastlines. Average precipitation is zero inches.

Alaska

Showers affect the north and central regions, with southern rains through August 15. The Panhandle expects rain from August 16 to 21, while isolated showers hit the east and west. Late August sees northern rain and snow showers, central sunshine, and periods of rain in the south.

Hawaii

Scattered showers and sunshine dominate until August 16. From August 17 to 31, showers continue, especially isolated in central and western areas. Expected precipitation is 0.2 inches, 0.4 inches below average, with an average temperature of 80.5 degrees—1 degree below normal.