Sept. 26. There are two tropical systems in the Atlantic. The first, Humberto, formed into a hurricane this morning and was located about 465 miles northeast of the northern Leeward Islands. No watches or warnings have been issued for the United States, according to the National Hurricane Center.

The second system is expected to strengthen and bring heavy rainfall to the Caribbean through early next week.

Today: Showers and thunderstorms likely, mainly between 2pm and 4pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 81. Calm wind. Chance of precipitation is 60%. Tonight chance of showers and thunderstorms, then showers likely after 1am. Patchy fog after 1am. Otherwise, cloudy, with a low around 66. Calm wind. Chance of precipitation is 60%.

Saturday: Showers likely, then showers and possibly a thunderstorm after 11am. Patchy fog before 11am. High near 76. Light and variable wind. Chance of precipitation is 80%. Saturday night showers and thunderstorms. Mostly cloudy, with a low around 65. Calm wind. Chance of precipitation is 60%.

Sunday: Slight chance of showers, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 78. Northeast wind 5 to 8 mph. Chance of precipitation is 30%. Sunday night 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65.

Next week: Highs in the 70s and lows in the 60s with a chance of showers each day.

The forecast is courtesy of the National Weather Service.