Wednesday October 21 2020

The trade off for mild temperatures this time of year, is more moisture. The result after these longer nights, are large areas of thick fog.

A Dense Fog Advisory is in place for much of the region, with many areas in central Maryland and across the Bay on Delmarva with near Zero visibility. It is so thick in some places, it’s more like a heavy mist and you will need your windshield wipers.

This will slowly burn off, and bring yet another warm afternoon.

Here is first look weather forecast, and NEW GFS Interactive simulation slider.  Also see the journal of Maryland Weather conditions observed in Baltimore yesterday, climate report today, sunrise/sunset, moon phase, and daily weather map.

Dense Fog Advisory 

The Dense Fog Advisory includes all of Maryland between Frederick and Ocean City. The fog is most thick across the Bay and Delmarva.

There is fog as well in southern PA, even though those counties are not included here.  See the visibility report below.

October 21 dense fog advisory Wednesday




The thicker fog is where the numbers are in red and purple. Many areas under 1 mile!


October 21 weather Wednesday morning visibility



A very mild start to the day!

October 21 weather Wednesday morning temperatures


Morning Weather Map

A large area along the east coast with dense fog.  The light easterly winds has brought persistent rain into Florida. We will get the warmer winds for the afternoon, then repeat the rest of this week.

An early season storm across the Great Lakes has brought record snow to Minnesota and into Michigan. Another snow event is on the way across the Dakotas into Minnesota tomorrow with up to 12 inches of new snow.

October 21 weather Wednesday morning



Quick Weather Forecast:

Based on metro Baltimore


Quick Forecast For Central Maryland:

Fog will be slow to burn off later this morning. Afternoon sun should peak out of the clouds, and warm us back to the 70s.  The pattern will repeat for two more days. 

October 21 weather forecast Baltimore




NEW: Interactive Temperatures, Rain, and Wind

Try this:

  • Use the Orange Button to slide the timeline on your own. Or hit the Play Button at the lower left.
  • You can also pinch to zoom or move the map.



Climate Data Update

Observations Yesterday:

Tuesday October 20 2020

High = 75ºF  at 2:53 PM 

Low = 54ºF  at 1:48 AM 

Rainfall: 0.00″


Winds  from the Northwest

  • Top Speed (1 minute average) = 10 mph
  • Top Gust (3 to 10 seconds) = 14 mph
  • Average Wind Speed: 2.9 mph

Please note that humidity and dew point often change each hour like the temperature. These are not recorded as high or low, and can be arbitrary depending on the time you check.


Current Data and Past 72 Hourly Reports

You can get the hourly weather reports for the prior 72 hours at this link:

Baltimore Weather at BWI Past 72 Hours



Today’s Weather

Wednesday Climate Stats:

October 21, 2020 in Baltimore

Average High:  65ºF

Record High: 90ºF in 1969

Average  Low: 44ºF

Record Low:  26ºF 1952

Sunrise: 7:233 AM 

Sunset 6:19 PM 

*Daylight = 2:25 shorter than yesterday. 

Moon Phase

October 21 moon phase




Also See:

NWS Brings 2 Counties Under Local Office


Fall Foliage Report October 17



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. Many of these match up with the spots on our route.  Please use this list below are reference. I will include them daily with my articles on the kids.

Local Hourly Forecasts and Local Radar
Central Maryland
Southern Maryland



Maryland Weather Page

Maryland Weather 

I wanted to keep it simple. Just the basics for a quick view at any time.

Maryland Weather Just In Weather


Please share your thoughts, best weather pics/video, or just keep in touch via social media



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Winter Outlook Series


Early Winter October

Winter Outlook Series Weather Folklore


Winter Outlook 2021 La Nina Advisory

Winter Outlooks Farmers Almanacs


Also See

5 fireballs in 5 days

Also See:

July 2020 The hottest on record. Will it hint at snow this winter?


Record Hottest Month in Baltimore July 2020


Comet NEOWISE Viewing All July (photos/video)

Comet NEOWISE Bob Gelety




Related Posts

2020 Tropical Storm and Hurricane Names and Naming History

Tropical Storm Hurricane History


Atlantic Tropical History: Maps of Origin Regions Every 10 Days

13_Tropical Storm Formation Sep11_20



Other  Links:


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.


Also See:

Double Solar Halo

Double solar halo June 8


Just In Power Kids:

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