Saturday, June 21 2025

The summer solstice was last night, and today is the first full day of the new season. It is also the first weekend in nearly two months without the risk of rain! The script has been completely flipped, from cool and wet weather to extreme heat that will become dangerous.

I get it! It is summer and it gets hot! True! We anticipate many days where the afternoon Heat Index may exceed 105F, the morning lows will be stuffy in the upper 70s, and cities remain near 80F. That takes its toll on air conditioning as the buildings will retain more heat.

Many records may be broken across our region, both with afternoon highs and morning (warm) lows.

Please Consider:

Children: CHECK THE BACKSEAT OF YOUR CAR! DO NOT LEAVE A KID IN THE CAR!

Pets: The pavement will be HOT as well, and paws can burn. Limit the outside time for our furry friends to early morning or evening.

DO NOT leave pets in cars. Even with the window open, the interior can be 40 degrees hotter. Leaving a vehicle unattended with the AC on can cause it to stall or be driven away by someone else…

Summer Solstice

Simply put: The tilt of Earth in this part of our orbit around the sun is towards the sun.

The highest sun angle of the year.

The longest daylight of the year.

Yes, each day of summer will become shorter…only by a few seconds each day for the next week. It becomes more noticeable after July 4.

Aphelion Day: July 3rd: Ironically, Earth is FARTHEST from the sun. Earth will be about 3 million miles farther from the sun compared to perihelion day in January.

TODAY’S Weather

Morning Surface Weather

This morning, a cluster of clouds is passing through Central Maryland. The clouds will give way to sun and a hot afternoon, but the humidity is still comfortable.

The heat wave will build in starting tomorrow and take full hold Monday.

There has been a severe Mesoscale Convective Complex passing across the Northern US. This is common on the top or north side of a heat dome, like we are expecting. It will remain well north of us.

Live Satellite Widget

Wind Forecast 8 AM to 8 PM

A light breeze will help keep the air flowing and feeling comfortable one more day.

High Temperatures

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CLIMATE DATA: Baltimore

TODAY June 21

Sunrise at 5:41 AM

Sunset at 8:36 PM

Normal Low in Baltimore: 64ºF

Record 50ºF in 1968

Normal High in Baltimore: 86ºF

Record 100ºF 1923; 2012

Rainfall Deficit at BWI

Ending 2024 = -8.00”

-8.00” Since Jan 1 = -1.47”

-1.47” We are STILL DOWN -9.47” INCLUDING LAST YEAR

SUNDAY

Morning Low Temperatures

Afternoon High Temperatures

LOOKING AHEAD

Jet Stream: 500mb Geopotential Heights

Sunday THROUGH Friday

The heat dome will be strongest over our region for the first half of the week. It will break down a little on Thursday and Friday.

Monday Snapshot: Heat Dome Takes Hold

NWS Heat Risk: Monday to Friday

Forecast Temps

Monday Morning

Afternoon

Tuesday Morning

Afternoon

Heat Index

BROKEN RECORD TEMPERATURES?

Below is the focus on Baltimore’s BWI

Potential Records To Be Tied or Broken In Baltimore

Sunday WARMEST Low: 77℉ in 1933

Monday High 98℉ in 2024

Tuesday Low 76℉ in 2010

Tuesday High 100℉ in 2010

Wednesday Low 77℉ in 1948

7 Day Forecast

Weekend: 90s

Next Week: Dangerous Heat Mon to Wed

Thu and Fri: Scattered Afternoon T’Storms; Less Intense Heat

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THANK YOU:

Baltimore Sun Magazine Readers Choice Best Of Baltimore

Maryland Trek 11 Day 7 Completed Sat August 10

We raised OVER $111,000 for Just In Power Kids – AND Still Collecting More

The annual event: Hiking and biking 329 miles in 7 days between The Summit of Wisp to Ocean City.

Each day, we honor a kid and their family’s cancer journey.

Fundraising is for Just In Power Kids: Funding Free Holistic Programs. I never have and never will take a penny. It is all for our nonprofit to operate.

Click here or the image to donate:

RESTATING MY MESSAGE ABOUT DYSLEXIA

I am aware there are some spelling and grammar typos and occasional other glitches. I take responsibility for my mistakes and even the computer glitches I may miss. I have made a few public statements over the years, but if you are new here, you may have missed it: I have dyslexia and found out during my second year at Cornell University. It didn’t stop me from getting my meteorology degree and being the first to get the AMS CBM in the Baltimore/Washington region. One of my professors told me that I had made it that far without knowing and to not let it be a crutch going forward. That was Mark Wysocki, and he was absolutely correct! I do miss my mistakes in my own proofreading. The autocorrect spell check on my computer sometimes does an injustice to make it worse. I also can make mistakes in forecasting. No one is perfect at predicting the future. All of the maps and information are accurate. The ‘wordy’ stuff can get sticky. There has been no editor who can check my work while writing and to have it ready to send out in a newsworthy timeline. Barbara Werner is a member of the web team that helps me maintain this site. She has taken it upon herself to edit typos when she is available. That could be AFTER you read this. I accept this and perhaps proves what you read is really from me… It’s part of my charm. #FITF