Scorching Heat Could Break MD Record, Feel Like It's 110 Degrees

MARYLAND — Temperatures may be just under 100 degrees Saturday and Sunday in Maryland, flirting with the record high on both days. The Saturday heat index may reach 110 degrees, drawing an excessive heat watch for much of the state.

The National Weather Service called them "dangerously hot conditions" and warned of high risk for heat-related illness.

"Oppressive heat and humidity will overspread the area Saturday and last into Sunday," the NWS said. "Little relief from the heat is expected Saturday night with low temperatures in mid 70s to near 80 for most, which will compound heat stress on those without air conditioning."

The high is 99 degrees Saturday, June 22 and Sunday, June 23 at Baltimore/Washington International Thurgood Marshall Airport.

That threatens the airport's June 22 record of 100 degrees (set in 1988) and June 23 record of 97 degrees (last hit in 2010).

The excessive heat watch lasts from Saturday afternoon through Saturday evening and covers:

• Frederick
• Carroll
• Northern Baltimore
• Cecil
• Southern Baltimore
• Prince George's
• Anne Arundel
• Charles
• Northwest, central and southeast Montgomery
• Northwest, central and southeast Howard
• Northwest and southeast Harford

"Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors," the NWS said. "Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes."

Here is the NWS's seven-day forecast at BWI Airport:

Friday: Sunny, with a high near 96. South wind 3 to 8 mph.

Friday Night: Mostly clear, with a low around 73. South wind 5 to 9 mph becoming light after midnight.

Saturday: A slight chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 99. Heat index values as high as 103. Southwest wind 5 to 9 mph. Chance of precipitation is 20%.

Saturday Night: A slight chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 78. South wind around 8 mph. Chance of precipitation is 20%.

Sunday: A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 99. Southwest wind 7 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.

Sunday Night: Showers and thunderstorms likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 75. Chance of precipitation is 60%.

Monday: A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 94. Chance of precipitation is 40%.

Monday Night: A chance of thunderstorms before 8pm. Mostly clear, with a low around 70. Chance of precipitation is 30%.

Tuesday: Sunny, with a high near 93.

Tuesday Night: Partly cloudy, with a low around 71.

Wednesday: A chance of showers and thunderstorms. Mostly sunny and hot, with a high near 98. Chance of precipitation is 30%.

Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Chance of precipitation is 40%.

Thursday: A chance of showers and thunderstorms. Partly sunny, with a high near 89. Chance of precipitation is 30%.