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Early autumn · week 40

Maryland Weather Forecast for Wednesday, July 22: Storm Risk Shifts South and East

Maryland will see a noticeable divide in the weather today. Much of Western, Central and Northern Maryland will turn drier following Tuesday’s storms, while Southern Maryland and the Eastern Shore remain at risk for additional thunderstorms, damaging wind gusts and heavy rainfall.

A cold front is slowly moving south through the region. Behind it, cooler and much less humid air will begin arriving tonight and become firmly established on Thursday. (Weather.gov⁠)

Wednesday Morning

Most of Central and Northern Maryland is starting the morning with leftover clouds, areas of sunshine and only a limited chance of an additional shower. Some roads may remain wet following Tuesday evening’s storms, but widespread hazardous weather is not expected around Baltimore, Frederick or the northern Washington suburbs during the morning commute.

Western Maryland will remain considerably cooler, particularly around Garrett County, where temperatures may struggle to move beyond the lower 70s. Farther east around Washington County, afternoon temperatures should reach the lower to middle 80s.

Conditions are more concerning across the Lower Eastern Shore. Showers and thunderstorms have continued to produce very heavy rainfall around portions of Wicomico, Somerset and Worcester counties. Additional flooding remains possible where repeated storms move over areas that received heavy rain overnight. (Weather.gov⁠)

Flood Watch Continues on the Lower Eastern Shore

A Flood Watch remains in effect through 6 p.m. for:

  • Wicomico County
  • Somerset County
  • Inland Worcester County
  • Maryland’s Atlantic beaches, including Ocean City

Flash flooding caused by excessive rainfall remains possible. Water may quickly collect on roads, in low-lying communities and in areas with poor drainage. Never attempt to drive across a flooded roadway. (Weather.gov⁠)

Wednesday Afternoon

Western Maryland

Western Maryland should experience improving conditions through the day. Garrett County will remain cooler, with highs mainly in the lower to middle 70s. Washington and Allegany counties should generally reach the lower to middle 80s.

A brief shower cannot be completely ruled out, but most of the afternoon should be considerably quieter than Tuesday.

Central and Northern Maryland

Baltimore, Carroll, Harford, Howard and Frederick counties should see a mixture of sunshine and clouds with highs generally in the middle to upper 80s.

Baltimore is expected to remain mostly sunny, with only a small chance of an afternoon shower or thunderstorm. Areas closer to Washington, D.C., and Southern Maryland will have a somewhat greater chance of seeing storms as the front moves south. (Weather.gov⁠)

Washington Suburbs

Montgomery and Prince George’s counties should reach the middle to upper 80s. Scattered showers and thunderstorms may redevelop during the middle or late afternoon, particularly in areas closer to Southern Maryland.

Storm coverage will not be uniform, meaning some communities may stay completely dry while nearby locations receive a downpour.

Southern Maryland

Southern Maryland has one of the greater thunderstorm chances today. Scattered to numerous storms may develop along the slow-moving front during the afternoon.

The primary severe-weather concern will be localized damaging wind gusts. Storms may also produce frequent lightning and torrential rain. The National Weather Service notes that a few strong or severe thunderstorms are possible from central Virginia into Southern Maryland. (Weather.gov⁠)

Eastern Shore

The Eastern Shore will remain humid and unsettled. Highs should reach the middle to upper 80s inland, with temperatures closer to the middle 80s along the immediate coast.

Additional thunderstorms are expected, particularly across the Lower Shore. Some storms could produce:

  • Torrential rainfall
  • Localized flash flooding
  • Damaging wind gusts
  • Frequent lightning
  • Rapidly reduced visibility

The greatest flooding concern remains across Wicomico, Somerset and Worcester counties, where several inches of rain have already fallen in some locations. (Weather.gov⁠)

Chesapeake Bay and Ocean City

Boaters should remain alert for rapidly changing conditions. Strong thunderstorms may produce sudden wind shifts, dangerous gusts, lightning and sharply reduced visibility over the Chesapeake Bay and nearby waterways.

At Ocean City, periods of rain and thunderstorms remain possible throughout the day. There is also a moderate risk of dangerous rip currents along the beaches. Swim only near a lifeguard and follow all beach patrol instructions. (Weather.gov⁠)

Wednesday Evening and Overnight

Conditions should become increasingly dry across Western, Central and Northern Maryland this evening as the cold front moves farther south.

Southern Maryland and the Lower Eastern Shore may continue to experience showers and thunderstorms into the evening or overnight. Additional heavy rain could worsen flooding where storms repeatedly cross the same locations.

Overnight temperatures will fall into:

  • Upper 40s and 50s in the coolest mountain valleys
  • Upper 50s to middle 60s across Western and Northern Maryland
  • Middle to upper 60s around Baltimore, Washington and Southern Maryland
  • Upper 60s to near 70 along the Eastern Shore and coast

Humidity will begin falling behind the front, creating a noticeably more comfortable night for much of the state. (Weather.gov⁠)

Cooler and Less Humid Thursday

Thursday will bring one of the more comfortable late-July days Maryland has experienced recently.

Most locations should see plenty of sunshine, noticeably lower humidity and temperatures in the upper 70s to lower 80s. Ocean City and the immediate coast may remain in the middle to upper 70s.

The pleasant weather should continue into Friday, with mainly dry conditions expected across most of Maryland. (Weather.gov⁠)

Maryland Forecast Summary

Most of Western, Central and Northern Maryland can expect improving weather today, although an isolated afternoon storm remains possible.

The greatest concern will be across Southern Maryland and the Eastern Shore, where additional thunderstorms may produce damaging winds and heavy rainfall. Flooding remains an active concern across the Lower Eastern Shore through this afternoon.

Cooler, drier and much less humid weather arrives statewide on Thursday.

Forecast sources: National Weather Service Baltimore/Washington, Mount Holly, Pittsburgh and Wakefield.
Last updated: Wednesday morning, July 22, 2026.

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