Wednesday 26 August, 12 UTC T+96 Valid: Sunday 30 August, 12 UTC
Ensemble forecasts explained
One ‘ensemble forecast’ consists of 51 separate forecasts made by the same computer model, all activated from the same starting time. The starting conditions for each member of the ensemble are slightly different, and physical parameter values used also differ slightly. The differences between these ensemble members tend to grow as the forecasts progress, that is as the forecast lead time increases.
A chance of showers and thunderstorms, mainly after 3pm. Some of the storms could produce heavy rain. Mostly sunny, with a high near 92. West wind 5 to 15 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Day: 30% | Night: 30%
Learn how to read maps containing weather observation information for the surface.
In the sections that follow, we examine features to look for on weather maps to make a forecasts, general methods of preparing a forecast, and more specific tips for specific scenarios.
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See long range weather forecasts for the next 60 days from The Old Farmer’s Almanac! Our long range forecasts can be used to make more informed decisions about future plans that depend on the weather, from vacations and weddings to sporting events and outdoor activities.