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TMC Weather, LLC, Baltimore, MD (2025)

08/30/2025

08.30.2025 7AM
COPY & REPEAT DAY

Saturday is shaping up to be another perfect day across Central Maryland and South-Central Pennsylvania. High pressure will be firmly in control, keeping skies sunny and humidity low. Afternoon highs will stay very comfortable, ranging from the low to mid 70s across much of the region, with Baltimore reaching closer to 80°.

From Gettysburg down to Germantown and from Bel Air to Chestertown, it’s the kind of weather that’s ideal for outdoor plans. Whether you’re heading to a festival, a backyard cookout, or just enjoying a walk outside, you’ll have no weather worries. Rain chances sit at 0%, and the clear skies will make it feel almost like a preview of fall.

Cooler air will settle back in once the sun sets, so keep a light jacket handy for the evening. Overall, it’s another beautiful, dry, and refreshing day ahead!

08/30/2025

This week marks 20 years since Hurricane Katrina one of the most devastating natural disasters in U.S. history. On August 29, 2005, Katrina made landfall along the Gulf Coast, leaving behind catastrophic destruction, especially in New Orleans where levee failures led to widespread flooding. More than 1,800 lives were lost, and hundreds of thousands of families were displaced.

Two decades later, the scars remain but so does the resilience. Communities that were once underwater have rebuilt, strengthened levees and flood systems have been put into place, and the stories of survival and loss still shape conversations about disaster preparedness and climate change today.

Katrina changed not just the Gulf Coast, but the way our nation views hurricanes, infrastructure, and emergency response. It serves as a solemn reminder of the power of nature—and the importance of readiness, compassion, and community in the face of tragedy.

08/29/2025

08.29.2025 12PM
STAYING LIKE THIS FOREVER?

As we wrap up August and head into early September, a big shift is coming. Cooler Canadian air will be settling in, knocking temperatures down by 5–10° below normal. Highs will stay in the 70s with crisp mornings in the 50s, and some mountain valleys even dipping into the 40s.

The air will also be less humid, making it feel fresh and comfortable perfect for early morning coffee, evening walks, and even breaking out the hoodies.

08/29/2025

08.29.2025 10AM
BEAUTIFUL LABOR DAY WEEKEND

The first taste of fall will be here just in time for the holiday weekend! A cold front will sweep across the region Friday, bringing in cooler, drier air that will settle in and stick around through the start of September.

On Friday, afternoon highs will still reach the lower 80s under plenty of sunshine, but by evening, the front will push through, dropping temperatures quickly. Overnight lows will fall into the upper 50s across Central Maryland, with some upper 30s possible in the mountains as the crisp autumn air really takes hold.

Both Saturday and Sunday will bring picture-perfect weather. Highs will stay in the mid to upper 70s with low humidity and lots of sunshine. Nights will be comfortably cool, dipping into the 50s, and even cooler in higher elevations. The reinforcing shot of cool, dry air behind the front ensures that humidity won’t be returning anytime soon.

08/29/2025

08.29.2025 7AM
BREEZY DAY
A noticeable uptick in the breeze across Central Maryland as a reinforcing shot of cooler, drier air slides in behind the front. Wind speeds during the morning commute (7–10 AM) will stay fairly light, around 10 mph gusts, so early activities, bus stops, and morning errands won’t be impacted much.

By midday into the early afternoon (1–4 PM), winds begin to strengthen, with gusts reaching 15 mph. While not damaging, this will be enough to make it feel a touch cooler, especially in shaded areas, and you’ll notice tree branches moving a little more steadily. If you have any outdoor work, light decorations, or items on porches and patios, this is when they may start to get knocked around a bit.

Late afternoon into the evening is when winds peak, with gusts reaching 20 mph between 7–10 PM. This will add a crisp feel to the air as temperatures settle into the 60s and eventually the 50s overnight. While 20 mph gusts are not severe, they are strong enough to make it feel brisk, especially with cooler air filtering in. If you’re attending evening sports, heading to the Bay, or grilling outside, you’ll definitely notice that extra breeze.

These winds are part of the transition into a more fall-like pattern that continues into the weekend, keeping humidity low and skies clear. The upside: great air quality and refreshing evenings. The downside: it’ll feel a little chilly for late August, especially with that breeze.

08/28/2025

As we head into the fall months, the evenings are getting shorter and sunsets will keep coming earlier each week. On September 1st, the sun will set at 7:36 PM in Baltimore. By October 1st, we’ll already be down to 6:48 PM, and by November 1st, the sun sets just after 6 PM. By the time December 1st arrives, the sun will set as early as 4:43 PM!

This steady loss of daylight is a clear sign of the seasonal shift ahead. We’ll still enjoy warm afternoons at times, but these earlier sunsets are a reminder that fall is just around the corner. 🍂

08/28/2025

We’ve checked the charts, analyzed the models, and the diagnosis is clear: you may need an “excuse” today, but after your lunch break… not for illness, not for injury… but for BEAUTIFUL WEATHER!

Temperatures will stay comfortable, humidity remains low, and sunshine will be in full supply across Central Maryland and South-Central PA. If you’re looking for a reason to sneak out of work or school for a little extra fresh air, we’ve got your “official” note covered. 😉

Tag someone who deserves an excuse slip tomorrow!

08/28/2025

08.28.2025 7AM
ANOTHER ONE... ANOTHER BEAUTIFUL DAY

High pressure will remain firmly in control on Thursday, which means another day of quiet, dry, and comfortable conditions across Central Maryland and South-Central Pennsylvania. Skies will be mostly sunny from sunrise through sunset, with only a few thin high clouds possible later in the day as the next front begins to approach from the northwest.

Temperatures will run cooler than average for late August. Most locations will start Thursday morning in the 50s, with a few cooler valleys dipping into the upper 40s, while urban and bayfront areas hold closer to 60°. By the afternoon, highs will climb into the middle 70s across the region, with a few upper 70s to near 80° in metro Baltimore and along the I-95 corridor. Out toward the higher elevations in western Maryland and south-central Pennsylvania, highs will remain cooler, holding in the upper 60s to lower 70s.

Humidity levels will stay low thanks to the influence of high pressure, so the air will feel crisp and refreshing despite the late August sun angle. Winds will generally remain light out of the northwest at 5 to 10 mph, helping to keep conditions stable and pleasant. No rain is expected during the day across Maryland or Pennsylvania, and the atmosphere will remain too dry for any pop-up showers.

Thursday night, conditions will begin to change as a reinforcing cold front approaches from the Great Lakes. Skies will gradually increase in cloud cover overnight, especially for the western counties and higher terrain. Most of the region will stay dry, but isolated sprinkles or a light shower cannot be ruled out in the mountains west of the Blue Ridge. Temperatures will drop quickly after sunset, with lows falling into the upper 40s in the higher terrain, lower to mid-50s in most rural and valley locations, and upper 50s to near 60° in the metro and coastal areas.

The pattern ahead points to a reinforcing shot of cool, dry air moving in by Friday and Saturday, with another cold front passing through late Friday. This will keep highs below average heading into the weekend, while overnight lows could dip into the 30s in some of the higher mountain valleys, signaling an early taste of autumn.

08/27/2025

Fall is making its move! A refreshing shot of cooler, drier air has settled in, bringing us crisp mornings, sunny afternoons, and that first real taste of autumn. Temperatures are running 10–15° cooler than last week, and the comfortable weather looks to stick around through the end of the week.

☕ Perfect for morning coffee on the porch, evening walks, and yes… maybe even breaking out the flannel a little early.

✅ The best part? No major storms are on the horizon. Just smooth, fall-like weather ahead.

08/27/2025

08.27.2025 12PM
COLD BLAST IS HERE TO STAY

This upcoming pattern shift is about to lock in some true fall-like weather across Central Maryland and South-Central PA, and Friday looks like one of the most noticeable days yet. The image you see here highlights a reinforcing blast of cool Canadian air dropping into the Mid-Atlantic behind a strong upper-level low spinning across the Northeast. Think of this as a “second punch” of cooler air following the cold front earlier in the week the first front opened the door, and this surge slams it wide open.

As this reinforcing trough digs in, much colder air aloft will spill southeastward, and that translates directly to the surface where we’ll feel it. Temperatures that were comfortably in the upper 70s to low 80s earlier this week will likely tumble 15–20° below where we were just days ago. Many areas across Maryland, Pennsylvania, and into the Delmarva could struggle to get out of the 60s Friday afternoon, with higher ridges and western valleys stuck even cooler. Add in a brisk northwest breeze funneling around the backside of the departing low, and it’s going to have a crisp, almost early-October feel.

This isn’t just a quick hit, either this setup will reinforce a prolonged stretch of cooler-than-normal air into the weekend. Overnight lows will sink into the 50s for most, and some of the valleys west of the Blue Ridge may even flirt with upper 40s. It’s a strong signal that the seasonal transition is underway, and while we’re not talking about frosts just yet, the atmosphere is clearly shifting toward a fall regime. For those tired of the humidity and heat, this is your kind of pattern.

08/27/2025

08.27.2025 10AM
TROPICAL WEATHE IS QUIET, KNOCK ON WOOD

Over the next week or so, tropical activity across the Atlantic looks to remain fairly quiet. The only active system at this time is Tropical Storm Fernand, which is well out in the open Atlantic and tracking northward, posing no direct threat to the U.S. or the Caribbean. Beyond Fernand, the National Hurricane Center (NHC) shows no other organized systems expected to develop in the near term.

This quieter stretch is being supported by a few key factors: increasing wind shear across parts of the Atlantic basin, patches of dry Saharan air still moving off Africa, and a pattern that favors stronger troughs dipping into the U.S. East Coast, helping to steer storms away from land. While the peak of hurricane season officially runs through mid-September, there are times when the basin briefly quiets down, and this appears to be one of those windows.

That said, it’s important to remember that even when the tropics look calm, conditions can change quickly. Late August through mid-September remains the climatological peak of hurricane season, so systems can spin up with relatively little warning. For now, though, Maryland and the Mid-Atlantic will benefit from the break in tropical activity, allowing the focus to remain on the incoming stretch of cooler, fall-like weather settling in by late week.

08/27/2025

08.27.2025 7AM
HIGH PRESSURE SAYS IT ALL

High pressure will be the big story across Central Maryland and South-Central Pennsylvania on Wednesday, delivering a picture-perfect midweek setup. After some clouds and a few sprinkles fade away tonight, skies will clear out, and a refreshing, cooler-than-normal air mass will settle in. Morning lows will dip into the 50s for many west of I-95, with 60s holding near the Bay and in urban spots. By the afternoon, highs will only climb into the mid-70s to around 80, several degrees below late-August averages. With sunshine, low humidity, and a steady northerly breeze, it will feel almost like an early taste of fall.

Looking ahead, this comfortable pattern holds through Thursday thanks to reinforcing high pressure. A reinforcing cold front will drop through the region late Thursday night into Friday, bringing another shot of cooler air. While a sprinkle or brief light shower can’t be ruled out in the mountains, the front looks moisture-starved east of the Blue Ridge, meaning most of Central Maryland and South-Central Pennsylvania will stay dry. The bigger story will be temperatures dropping even further behind this front, setting the stage for an autumn-like finish to the week.

By Friday and into the weekend, broad troughing aloft will lock in over the East, keeping temperatures below normal. Most locations will hold in the 70s for highs, with overnight lows dipping into the 50s especially in outlying areas west of the urban corridor. Some valleys in higher terrain may even flirt with upper 40s by Friday night. Looking further ahead, the weekend stays dry under this cooler setup, but models hint at a low pressure system developing over the Southeast by early next week. Depending on how that evolves, rain chances could return to the forecast by Labor Day.

TMC Weather, LLC

08/30/2025

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