The Old Farmer’s Almanac claims that its forecasts are about 80 percent accurate, though it notes no forecaster can predict the weather with total accuracy. From August 12 to 14, the west may see isolated thunderstorms while the east faces a hurricane threat. From August 22 to 24, the Almanac says scattered thunderstorms are likely in the east while the west faces a tropical storm threat. Upper MidwestThe Upper Midwest outlook starts with isolated thunderstorms and warm weather, followed by a sunny and warm period from August 8 to 12. Isolated thunderstorms and warm weather are expected from August 23 through the end of the month.