Transit officials said that passengers on MARC's Brunswick and Camden Lines could expect delays of 5 to 15 minutes.
That's because of speed restrictions put in place because of expected high heat Monday afternoon and evening.
Speed reductions are put in place when temperatures are expected to be consistent at 85 degrees or more or if the temperature swings 25 degrees or more in a 24-hour period.
Officials also said Virginia Railway Express trains on the Fredericksburg line would be delayed up to 11 minutes between 1 p.m. and 7 p.m. because of the heat. VRE says the farther a person is traveling the longer the delay will be.