Fog and low visibility Tuesday morning in Baltimore area, followed by milder temperatures by afternoon

Fog expected to affect early travel, with visibility improving late morning

Baltimore-area residents are likely to start Tuesday with reduced visibility as fog develops overnight and lingers into the early commute. The setup features moisture increasing near the surface while temperatures fall toward the dew point, a common combination for fog formation. Forecasters expect the fog to thin and lift by mid-morning as daytime warming and mixing increase, allowing visibility to improve across the metro area.

Because temperatures near daybreak may hover close to freezing in some outlying locations, transportation impacts could extend beyond visibility alone. Where fog forms alongside near-freezing air and damp road surfaces, patchy slick spots can develop, particularly on bridges, ramps, and other elevated surfaces that cool faster than surrounding pavement.

Afternoon trend: milder air, but uneven warming across Maryland

After the fog dissipates, the Baltimore region is expected to trend milder through the afternoon. High temperatures are projected to reach the 50s in many locations, reflecting a short-term warm-up following a recent stretch of colder-than-normal conditions. Cloud cover may persist for much of the day, though any breaks in the clouds would support additional warming.

The temperature increase may not be uniform across the state. Areas closer to the Chesapeake Bay and the Atlantic influence—particularly northeastern Maryland and the Eastern Shore—can remain cooler when marine air holds in place. In those zones, afternoon highs may stay in the 40s even as inland communities warm into the 50s.

Midweek: intermittent showers possible, with a wetter pattern favored late week

While Tuesday is expected to remain largely dry after the morning fog, the broader pattern points toward increasing precipitation chances later in the workweek. Spotty showers are possible Wednesday and Thursday, with a higher likelihood of rain developing Friday. A wetter day on Friday would also tend to cap daytime temperatures, keeping readings closer to the 40s where rain is more persistent.

What to watch during the morning commute

• Rapid changes in visibility, especially in low-lying areas and near waterways
• Longer stopping distances on damp roads
• Isolated slick patches where temperatures briefly dip near freezing

Timing matters: fog impacts are expected to be greatest early Tuesday, with improvement later in the morning as temperatures rise.

Forecasters will continue refining the late-week rain outlook as new data arrives, including the potential for sharper temperature swings and precipitation timing that could affect travel and outdoor plans.