Relatively ‘cool’ with chances of showers this weekend; ‘substantial’ heatwave next week

HUNTSVILLE — After highs in the upper 80s to lower 90s today and Saturday, a more substantial heatwave is forecast to develop during the early to middle part of next week (Sunday through Wednesday).

According to the National Weather Service Huntsville office:

• Highs are expected to reach the mid- to upper 90s each day, potentially reaching 100
  degrees in some locations Tuesday and Wednesday.
• Heat index values are expected to reach the 105-110 degree range each day, potentially
  reaching 110-115 degrees in some locations Tuesday and Wednesday.
• Additional heat advisories or extreme heat warnings may be issued during this
  time.

Meanwhile, there is a medium (30-40%) chance for general thunderstorms today and Saturday, and low (10-30%) chances for general thunderstorms Sunday-Wednesday. Rain chances will increase once again by next Thursday.

Locally heavy downpours and frequent lightning will be the main storm impacts, the weather office said.