Record Hottest Month in Baltimore July 2020August 1, 2020

We just finished the hottest July on record in Baltimore. This is typically the hottest month of the year, but we went over the top this time according to the weather station at BWI. Ironically, there were no individual days setting a record, and we ended this July with the coolest day of the month at 81ºF. But with 25 days at or above 90ºF, averaging the high and low temperatures of all 31 days, this was took the top spot.

In fact it was almost a full degree warmer than the previous hottest month.

For contrast, July 2014 brought Baltimore 5 record low temperatures. We quite often see in the history books extreme swings from one end to the other in a short period of time. So this has brought up a common question again: Can this mean a snowy winter?

July 2020 temperatures in Baltimore BWI


Ranking The Top 10 Hottest Months On Record In Baltimore 

The interesting things on this chart:

  • The op 5 years were since 1995. The Past 25 years.
  • 4 of the 5 previous ‘Hottest’ months were in between 1931 and 1955. A 15 year stretch of high heat.

July 2020 Hottest On Record Baltimore

Disclaimer: There have been many local meteorologists documenting that this weather station was running warmer than surrounding locations and The National Weather Service has acknowledged that. But there is a lot of red tape to get it moved to a better representative location, so this is what we have to work with for now.


Can a hot July indicate if we get a snowy winter?

This chart compares the top 10 hot years above to the following winter snowfall measured in Baltimore.  The data is all over the place.

  • 3 following winters were above normal.
  • 5 following winters were below normal.
  • 1 following winter was near normal within a margin of error.

Winter Snow After Hot July


Take Away

This does not give us a clear answer. At least we can say that. But this does not tell the whole story. In my winter outlook I will compare years with El Nino/La Nina, Solar Minimum, and a little more date from the current tropical season.

This was an interesting exercise but if you have Faith in the Flakes and just can’t wait for cooler weather, I was able to distract you for a fee minutes.  Hang in there. We’ve passed the worst of the summer heat and it will gradually get cooler.



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.

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