Unseasonably Warm Temperatures Expected Across Delmarva Through Midweek

A stretch of unusually warm weather is expected across the Delmarva Peninsula through Wednesday, with temperatures running well above average for early March and potentially approaching record levels in some locations. The warm pattern is being driven by a stable upper-level weather pattern combined with high pressure positioned over the western Atlantic Ocean. This setup […]

A stretch of unusually warm weather is expected across the Delmarva Peninsula through Wednesday, with temperatures running well above average for early March and potentially approaching record levels in some locations.

The warm pattern is being driven by a stable upper-level weather pattern combined with high pressure positioned over the western Atlantic Ocean. This setup acts almost like a heat pump, allowing very mild air to surge northward into the Mid-Atlantic region.

As a result, daytime temperatures across much of Delmarva are forecast to climb into the low to mid 70s through midweek. That is roughly 20 to 25 degrees warmer than normal for this time of year. Overnight temperatures will also remain mild, with lows generally falling into the 40s and 50s.

The warm temperatures will be most noticeable inland across Delaware and Maryland’s Eastern Shore. However, communities along the Atlantic coast will stay noticeably cooler due to the influence of the chilly ocean waters. High temperatures near the beaches are expected to remain mostly in the 50s as a daily sea breeze develops during the afternoon hours.

While record temperatures appear unlikely on Tuesday, some locations could challenge or even break daily record highs by Wednesday if the warm air remains firmly in place.

Another feature of this mild pattern will be the development of fog, especially during the nighttime and early morning hours. Increasing moisture in the atmosphere combined with cool ocean temperatures will create favorable conditions for fog formation. Coastal areas will be most prone to fog, but it may spread farther inland overnight before dissipating each morning.

Despite the fog potential, the overall pattern remains quiet and stable through midweek, bringing a prolonged period of spring-like warmth to the Delmarva region.