May 21 2020

The weather pattern is still dominated by the cut off Low and reverse wind flow for us off of the Atlantic Ocean. The cool winds will continue for a few more days, but some changes on the way. The slow moving system will finally bring in the rain Friday, with showers lingering into Saturday. Then a little warm up as we dry out locally for Memorial Day.

Water Vapor Satellite Cut Off Low

They water vapor satellite shows the large circulation centered over Kentucky and Tennessee. This has pumped in flooding rain across North Carolina and Virginia. But a block in the atmosphere with dry air across northeastern Maryland, New Jersey, and central Pennsylvania.

May 21 maryland weather water vapor satellite


Water Vapor Satellite Loop

3 hours



Flooding Update: Midland Michigan

Historic flooding in Midland, MI after two dams broke on Tuesday. At 35 Feet, this was 11 Feet above flood stage.


Local Weather This Morning

The dry air in PA helped temps drop into the 30s, with widespread 40s across central Maryland. No records but these were 10 to 15 degrees below normal.

May 21 maryland weather temperatures Thursday morning

Climate Report

To date, this is the second coldest May on record in Baltimore. See the Weather Collection Lab from this morning for more info about that.May 21 maryland weather Thursday morning

📋 Observations yesterday

🌡 Climate Today

🗺 Weather Map

☀️ Sunrise and Sunset Times

🌙 Moon Phase




Weather Today

With High Pressure off of the coast, we continue with the cool east wind, but it is also blocking the rain from moving in one last day. Some sprinkles may reach west and south of Washington later today. But the main rain will be in the mountains and across Virginia and the Carolinas. We will get it tomorrow.

May 21 maryland weather rain Thursday afternoon


High Temperatures 

May 21 maryland weather temperatures Thursday afternoon



Rain will be with us in the morning. It may be heavy at sunrise through noon as the block breaks.  Then we will be stuck in a pattern with scattered showers through Saturday.

May 21 maryland weather rain Friday



May 21 maryland weather temperatures Friday morning


May 21 maryland weather temperatures Friday afternoon


Forecast Animation

The rain finally arrives Friday, and then developing Low Pressure will keep the risk of rain with us through Saturday. By Sunday, dry weather will return, but daily rain showers may continue through next week in the mountains of western Maryland and The Ohio Valley.



Temperature Outlook

The good news is that we will finally warm up. Just a little for Memorial Day. But next week we should switch the wind flow and push temps back into the 80s.

May 21 maryland weather temperature outlook


New Video Series: What is this cloud?

Episode 2: Dark Line In The Sky Over Delaware


Tropical Weather Related Posts

2020 Tropical Storm and Hurricane Names and Naming History

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Water Spout OR Scud Cloud on videos and photos near Middle River Maryland

Other  Links:

When is the typical last freeze or frost?

See more here


Baltimore Weather At BWI May Not Be As Hot As Reported

Construction at the airport close to the weather station may be added artificial heat. Click here or the image for the details.



Was Your County Not Included?

Click this map for more on the regional forecast zones


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