Extreme Heat, Humidity To Target MD: Latest Weekend Forecast

MARYLAND — Summer will get off to a boiling start in Maryland this weekend with high temperatures expected to reach the mid- to upper 90s and a few spots likely to hit 100 degrees, according to the latest forecast.

Thursday marks the first official day of summer. Conditions will remain dry throughout the day with temperatures forecast to reach the upper 80s to lower 90s, the National Weather Service said in its latest forecast.

Temperatures and heat index values are expected to climb throughout the Baltimore-DC region by Friday, forecasters said.

According to the NWS, highs could reach 98 degrees on Friday and 100 degrees Saturday. Heat index values will likely exceed 100 degrees, according to models.

An excessive heat watch will be in effect Sunday for northeast Maryland, the NWS said, with heat index values up to 110 degrees possible. It includes: Kent, Queen Annes, Talbot, and Caroline counties.

While humidity remains moderate on Thursday and Friday, that will change on Saturday, forecasters said.

"Humidity creeps up to add to the pain (dew points around 70), producing heat indexes over 105," the Capital Weather Gang said in its latest forecast. "Plenty of sun and a lack of wind will have many seeking cooling relief."

The heat should reach its peak on Sunday. Some spots could see temperatures reach 100 degrees, forecasters said.

"Again, highs in the mid- to upper 90s will be most common, but some spots could hit or even exceed 100, breaking records," the Capital Weather Gang said. "At least there should be more clouds popping up to offer a bit of shade."

Here's the latest detailed forecast for the Baltimore area, according to the National Weather Service:

Thursday: Mostly sunny, with a high near 93. Southeast wind 6 to 9 mph.

Thursday Night: Mostly clear, with a low around 75. South wind around 6 mph becoming calm after midnight.

Friday: Sunny and hot, with a high near 98. Light southwest wind becoming south 5 to 9 mph in the morning.

Friday Night: Mostly clear, with a low around 79. South wind 5 to 7 mph becoming calm after midnight.

Saturday: A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 100. South wind 3 to 7 mph. Chance of precipitation is 30%.

Saturday Night: A chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 83. Chance of precipitation is 30%.

Sunday: Partly sunny and hot, with a high near 100.

Sunday Night: Showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 80. Chance of precipitation is 60%.