Sunday March 21 2021

A quick glance at the weather map and all looks quiet. High Pressure is in control and we will have a mostly clear sky throughout the day.  That alone would make for a quiet and boring weather report. I agree.

But something truly special and unique to spring will happen today.  Let’s take a look, and also when we might see some rain again.


Morning Surface Weather

Strong winds will be with us this morning and yeah the peak after sunrise.  

March 21 weather Sunday morning 



Satellite Loop

This is the water vapor with moist and dry air enhanced coloring. Our region has very dry air, which is what 

March 21 weather satellite loop



Weather Almanac

  • Normal Low in Baltimore: 35ºF
  • Normal High in Baltimore: 55ºF
  • Record High in Baltimore: 89ºF in  1948


Under normal conditions, we would have a 20 degree temperature swing from morning to afternoon. 

Today: The air and ground is quite dry. This allows a wider temperature swing of over 30 degrees from morning low to afternoon high.



Morning Low Temperatures 

These occurred around 7 AM, just before sunrise. 

BWI dropped to 28ºF, with some in the mid 20s just west in Howard County. 


March 21 weather low temperatures Sunday

Afternoon Temperature Forecast 

BWI is forecast to reach 59ºF. That would be a 31 degree temperature swing. The longer days and dry conditions allow the quick jump.   If you head outside, you might need a hoodie or light jacket, but at times in the sun could feel warm. Especially with full sun exposure in a sport where the wind is light. 


March 21 weather temperatures Sunday afternoon


*Big Daily Temperature Swing

A jump of 30 degrees or more is our special event today. It is more common in the early spring, when we come out of the chill of winter and start feeling the affects of a higher sun angle and longer daylight time.

On rare occasions we can get a jump over 40 degrees, but that often comes with a frontal boundary or strong warning winds after a chilly morning. 



Forecast Snapshot

We remain quiet until Wednesday with the next chance of rain showers.

March 21 weather forecast central Maryland



Forecast Animation

The next chance for rain will begin Wednesday and last into Friday morning. This looks like we will be on the edge of a fading system and only experience showers.

The next real event may arrive at the end of next weekend (Sunday).


March 21 weather forecast rain storm




Temperature Outlook 

It’s time to put the shovel and snowblower away.  The next warm up will arrive with a good chance of 70s by next weekend. It will not ‘stay’, but there is growing support for warming weather. Any chilly surges that follow will be spread farther out and less impactful. 

March 21 weather temperature outlook


Explore More:

March Gains and Losses: Sun, Temps, Time, and Moon Phases This month.





14 Local Maryland Pages (and York PA)

We have made a page for Maryland Weather which gives you the current conditions for 14 present area locations.

Local Hourly Forecasts and Local Radar
Central Maryland



Bel Air

Carroll County/Westminster




Ocean City

Dover DE

Southern Maryland

Patuxent River 

Washington DC





National Weather Service Adds Maryland Cecil And Garrett Counties




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