Cool and Generally Calm Today

Hello everyone!

Expect cool temperatures and generally calm weather today as high pressure slides by just to our south. That means that yesterday’s northwesterly breezes will continue today, but won’t be quite as strong. As a result, we’ll look for similar patterns regarding temps and cloud cover. For warmest temps and sunniest skies, head to the coastline where the influence of downsloping will be strongest. The mountains will remain a bit cooler, though we’ll run out of low-level moisture for upslope clouds/showers today which means that even though temps will be cooler in the north/mountains, skies should be partly/mostly sunny at least for a few hours this morning.

One small “fly in the ointment” today will be the passage of a pocket of very cold air aloft. This feature means that temperatures, even though cool at the surface, will decrease rapidly with height in the lower atmosphere. When this happens, we tend to see increased chances for shower activity in the afternoon. Around lunchtime (or perhaps a bit before), you’ll notice clouds start to develop as this vertical temperature contrast approaches a critical threshold. These clouds will grow taller and more widespread in the early afternoon, which is when they’ll begin to drop some rain showers. Not everyone will see rain this afternoon, and those that do won’t see it for long (15-30 minutes at most). Just be aware if you have outdoor plans that this morning might be a better time to get those in if you have the option. At the moment, it doesn’t appear that these showers will become tall and strong enough to produce thunder, though an isolated rumble can’t be totally ruled out in southern NH. Clouds and showers will fade as we approach sunset and the vertical temperature contrast subsides.

As mentioned before, temps today will be on the chillier side of normal and will range from the upper 40s in the mountains to upper 50s/low 60s along the coastal plain.

-Jack

Gorgeous Cool Weather Today

Hello everyone!

Spring weather in New England doesn’t get any better than what’s in store for today. A secondary cold front dropped through the region last night which means we’re left with breezy northwest winds across the region today. Unfortunately for those in the mountains, that means upslope clouds will be present this morning and will keep temps on the chillier side of comfortable. Jackman is reporting a temperature of 39 degrees as of 8 AM!

For the rest of us, downsloping will keep most clouds at bay (a few cumulus will pop up this afternoon) and will boost temps into the low/mid 60s. Dew points will plunge into the upper 20s which signals delightfully low humidity levels.

Enjoy today’s spectacular weather! Tomorrow will be similarly nice, though most will probably find it to be a bit chilly (50s).

-Jack

Pleasant Air Returns Today

Hello everyone!

For the past several days, we’ve been dealing with hot temperatures and increased humidity, especially away from the coastline. Thankfully, a cold front is on our doorstep this morning and is ready to bring a more pleasant airmass into the region from Canada. Along the front itself, a few showers are possible in the next couple hours up in the mountains, and a little closer to noon along the coast. The best chance for showers will be in eastern parts of the area. Not everyone will see rain, and for those that do, it won’t last long.

Satellite imagery this morning shows breaks of sun beginning to develop in southern NH and adjacent parts of SW ME. Areas downwind of the mountains will clear first, followed by the higher summits later this afternoon.

Temps today will still be on the warmer side, especially in southern NH which will remain ahead of the front until around noon. There, expect high temps in the lower 80s. Most of the Maine coast should top out between 75 and 80 while the mountains stay cooler around 65-70.

Drier air will also be moving into the region today with dew points falling from the 60s this morning into the 30s by this afternoon.

-Jack

Another Warm and Muggy Day Today

Hello everyone!

Today will featured continued warm temperatures and seasonably-uncomfortable humidity as southwesterly flow continues to plague the region ahead of a cold frontal boundary over the Great Lakes. Conditions today will be pretty similar to those we saw yesterday, with the hottest temperatures focused in the foothills and the coastal plain west of I-95. In this region, temps will top out in the upper 80s to low 90s this afternoon. Up in the mountains, temps will be ever so slightly cooler (mid 80s) with the nicest conditions found in higher elevations. Onshore flow will keep the coast even cooler, with highs ranging from around 70 in Rockland to around 80 closer to Portland.

Skies won’t be nearly as sunny today as the cold front moves closer. In fact, most of the area appears to be overcast this morning. Some breaks in the clouds are likely, especially across northern and eastern regions. These clouds are the only reason we won’t be headed for another day of widespread 90+ temps.

That said, we will still have enough warmth and moisture for some instability this afternoon. While the main cold front will remain too far west to be useful for triggering thunderstorms in our area, the large-scale lifting associated with the upper-level features associated with the front will give the mountains an assist in producing scattered thunderstorms, much like we saw a couple days ago. With that in mind, keep an eye to the sky if you’re headed for the hills later today. Stronger winds both near the surface and aloft will support a more robust severe weather threat this afternoon/evening especially in western NH and points north/west of Farmington ME. The primary threats will include damaging winds, heavy rain, and lightning.

-Jack

Warm and Humid Weather Continues Today

Hello everyone!

Today will feature more warm temps and muggy conditions as an unpleasant subtropical airmass drifts into our region from the south. Satellite imagery this morning shows plenty of mid/high clouds streaming through the area ahead of the remnants of Tropical Storm Bertha which are currently cruising through eastern Ohio. The rain associated with Bertha’s remnants will remain well to our west today, though we’ll once again be watching for a few pop-up showers and storms up in the mountains this afternoon/evening. Similar to yesterday, the biggest threats will be heavy rain and lightning.

Cloud cover will be a bit more widespread today compared to yesterday, but most spots should see at least a few glimpses of sunshine. The best chance for sun will be in southern parts of the area, especially southern NH.

High temps today will once again be warm, but thankfully won’t be quite as bad as yesterday. Expect temps to top out around 80 in the mountains and along the I-95 corridor, 90 in interior inland areas, and 75 along the coast.

-Jack

Midsummer Heat and Humidity Arrives Away From The Coast Today

Hello everyone!

Today will feature the arrival of midsummer-grade heat and humidity away from the immediate shorelines as southerly winds continue along the western side of an area of high pressure over the Atlantic. A few spots are reporting some low clouds and fog this morning, but this should burn off quickly over the next couple hours, similar to yesterday. After we finish getting rid of the low clouds this morning, expect mostly sunny skies region-wide.

Full sunshine and very warm air aloft will push temps inland well above normal this afternoon. Expect highs ranging from 90 in the mountains to as high as 95 in the warmest parts of southern/central New Hampshire. Dew points in the mid 60s will send heat index values into the absolutely wretched mid/upper 90s.

The combination of heat and humidity support some instability in the atmosphere by this afternoon. While no clear mechanism exists to get air moving upward (where it might be able to develop into a thunderstorm), sometimes the turbulent eddies that form from differential heating in the mountains can be enough to touch off a few isolated showers and storms. With that in mind, don’t be shocked if you end up with some raindrops this afternoon/evening up in the mountains. Any storms should be brief and relatively weak. The primary threats will include gusty winds and lightning.

Any showers or storms that do pop up will fade quickly around/after sunset with the loss of daytime heating.

Farther southeast, onshore flow will keep the coastline delightfully cool. High temps east of the Turnpike will range from 70 around Rockland to 75 along the Route 1 corridor to 80-85 as you get closer to I-95.

-Jack

Early-Summer Heat Wave Arrives Away From the Coast Today

Hello everyone!

A stretch of early-summer heat will begin today across western parts of the area as our beautiful maritime airmass slowly begins retreating offshore. Satellite imagery and surface observations suggest that most of the area is still socked in with low clouds and patchy fog as of 6:30 this morning. Expect these low clouds to slowly burn off from west to east through the course of the day today. With that in mind, western parts of the area should see sunshine develop in the next couple of hours which will allow temps to soar into the mid/upper 80s (possibly near 90 in southern NH). Eastern parts of the area (especially the Maine coast) will see clouds hold on (at least on and off) through much of the day today. As a result, temps will be much cooler. Expect highs ranging from 60 right along the immediate coast to 75 along much of the coastal plain to 80 in the northern mountains.

No precipitation is expected today as any forcing mechanism to trigger thunderstorm development remains locked hundreds of miles to our northwest.

-Jack

Reliably hype-free weather info for Western Maine and New Hampshire from amateur forecaster Jack Sillin

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