RICHMOND, Va. -- A large expanse of heat has gripped the United States, with about two dozen states under heat advisories or excessive heat warnings. On Saturday, Virginia's worst heat index values were more consistent across northern Virginia, where a heat advisory was in effect. This heat advisory has expanded to include southeastern Virginia for Sunday, and will likely encompass more of the Commonwealth on Monday.
High temperatures will be in the mid to upper 90s, but the heat index (or "feels like" temperatures) will exceed 100° in many locations for multiple hours of the day. Some areas will see a heat index of 105°-110°+ Sunday and Monday. Muggy dew points in the upper 60s and lower 70s hamper the body's ability to cool itself.
While this will definitely be very uncomfortable, these high temperatures will not tie or break any records, which are above 100°.
A cold front will bring very slight relief towards mid and late week. Even so, highs will still be in the lower 90s.