You can leave your umbrella at home through Thursday, but light rainfall is in the forecast for Philadelphia later in the week, according to the seven-day forecast from drone-powered weather service Saildrone. Friday's forecast shows the highest chance of rain at 100%, with rain likely through Saturday.

The immediate forecast also has cool temperatures in store for today. Temperatures will reach just 63 degrees today, then turn to warmer weather from Thursday to Tuesday.

Skies will be cloudy today and mostly cloudy on Thursday. Winds are forecast to reach a modest high of 15 mph today, but will get calmer starting on Thursday.

This story was created automatically using Saildrone's local weather forecast data, then reviewed by an editor. We also incorporate historic weather data from the National Oceanic and Atmospheric Administration (NOAA). Click here for more about what we're doing. Got thoughts? Go here to share your feedback.