Old Res Weather

Current Conditions [‒] Current Conditions [+]

35.1°F Colder than last hour.

1.7°C

Cold

Clear

Tonight: Lo 73 °F

Friday: Hi 92 °F

Dew Point: 32.4°F Decreased 0.1°F since last hour.

Humidity: 90%

UV Index: 0.0 None

Barometer: 29.00 in Falling 0.05 inHg/hr

982 mb

Rain Rate: 0.00 in/hr

Rain Today: 0.01 in

Rain Thursday: 0.00 in

Visibility: 10 miles

Wind:

Now: Calm

Avg: Calm

Gusts: 0 mph

OTHER PERSONAL WEATHER STATIONS

Alerts / Advisories [‒] Alerts / Advisories [+]

Southeast Middlesex County, MA - Heat Advisory
- SEE ALL NEARBY ALERTS -

NWS Weather Forecast -
Tonight, Friday, & Friday Night through Thursday

Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Thu Aug 6, 2026 2:19pm EDT

Overview:

- Heat and humidity continues into Friday, with only a few afternoon showers or thunderstorms.

- Cool front brings scattered storms Saturday. Less humidity levels and dry weather Sunday but daily shower/storm chances resume early to midweek.

Heat Advisory

Tonight:

Mostly Clear

Lo 73 °F

Mostly clear, with a low around 73. Heat index values as high as 96. Southwest wind around 6 mph.

Friday:

Sunny then Slight Chance Showers And T-Storms

Hi 92 °F

Friday: Sunny then Slight Chance Showers And Thunderstorms

A slight chance of showers and thunderstorms after 5pm. Sunny, with a high near 92. Heat index values as high as 98. West wind around 6 mph. Chance of precipitation is 20%.

Friday Night:

Slight Chance Showers And T-Storms then Partly Cloudy

Lo 72 °F

Friday Night: Slight Chance Showers And Thunderstorms then Partly Cloudy

A slight chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 72. Heat index values as high as 96. Southwest wind around 5 mph. Chance of precipitation is 20%.

Saturday:

Partly Sunny then Chance Showers And T-Storms

Hi 89 °F

Saturday: Partly Sunny then Chance Showers And Thunderstorms

A slight chance of rain showers between 1pm and 2pm, then a chance of showers and thunderstorms between 2pm and 5pm, then showers and thunderstorms likely. Partly sunny, with a high near 89. Heat index values as high as 96. Southwest wind 3 to 9 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.

Saturday Night:

Chance Showers And T-Storms then Partly Cloudy

Lo 71 °F

Saturday Night: Chance Showers And Thunderstorms then Partly Cloudy

A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 71. Southwest wind 5 to 8 mph. Chance of precipitation is 50%.

Sunday:

Sunny

Hi 88 °F

Sunny, with a high near 88. West wind 5 to 10 mph, with gusts as high as 21 mph.

Sunday Night:

Clear

Lo 66 °F

Clear, with a low around 66. West wind 3 to 9 mph.

Monday:

Sunny

Hi 88 °F

Sunny, with a high near 88. West wind 3 to 9 mph.

Monday Night:

Slight Chance Rain Showers

Lo 69 °F

A slight chance of rain showers after 9pm. Partly cloudy, with a low around 69. Southwest wind 5 to 8 mph.

Tuesday:

Chance Rain Showers

Hi 87 °F

A chance of rain showers before 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 87. West wind 5 to 9 mph. Chance of precipitation is 50%.

Tuesday Night:

Chance Showers And T-Storms

Lo 68 °F

Tuesday Night: Chance Showers And Thunderstorms

A chance of showers and thunderstorms before 4am. Mostly cloudy, with a low around 68. West wind around 7 mph. Chance of precipitation is 40%.

Wednesday:

Chance Rain Showers

Hi 84 °F

A chance of rain showers after 8am. Mostly sunny, with a high near 84. West wind around 7 mph. Chance of precipitation is 30%.

Wednesday Night:

Slight Chance Rain Showers then Partly Cloudy

Lo 65 °F

A slight chance of rain showers before 8pm. Partly cloudy, with a low around 65. West wind around 6 mph.

Thursday:

Chance Showers And T-Storms

Hi 83 °F

Thursday: Chance Showers And Thunderstorms

A slight chance of rain showers between 7am and 2pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 83. Southwest wind 3 to 8 mph.

FULL FORECAST

NWS Hourly Forecast -
Today 12am through Sat 11am

Issued by:
National Weather Service Boston / Norton, MA
Updated Thu Aug 6, 2026 2:19pm EDT

12:00am

Mostly Clear

76°F
Dew Pt 75°F
Wind from SW

SW 5 mph
Precip: 3%

1:00am

Mostly Clear

76°F
Dew Pt 74°F
Wind from SW

SW 5 mph
Precip: 2%

2:00am

Mostly Clear

75°F
Dew Pt 74°F
Wind from SW

SW 5 mph
Precip: 2%

3:00am

Mostly Clear

75°F
Dew Pt 73°F
Wind from W

W 3 mph
Precip: 2%

4:00am

Mostly Clear

74°F
Dew Pt 73°F
Wind from W

W 3 mph
Precip: 2%

5:00am

Mostly Clear

74°F
Dew Pt 73°F
Wind from W

W 5 mph
Precip: 3%

6:00am

Sunny

74°F
Dew Pt 72°F
Wind from W

W 3 mph
Precip: 3%

7:00am

Sunny

75°F
Dew Pt 73°F
Wind from W

W 3 mph
Precip: 3%

8:00am

Sunny

77°F
Dew Pt 73°F
Wind from W

W 5 mph
Precip: 3%

9:00am

Sunny

80°F
Dew Pt 73°F
Heat Index: 84°F
Wind from NW

NW 5 mph
Precip: 3%

10:00am

Sunny

84°F
Dew Pt 73°F
Heat Index: 90°F
Wind from W

W 5 mph
Precip: 3%

11:00am

Sunny

87°F
Dew Pt 72°F
Heat Index: 94°F
Wind from W

W 5 mph
Precip: 3%

12:00pm

Sunny

89°F
Dew Pt 71°F
Heat Index: 95°F
Wind from W

W 5 mph
Precip: 3%

1:00pm

Mostly Sunny

90°F
Dew Pt 71°F
Heat Index: 97°F
Wind from W

W 5 mph
Precip: 4%

2:00pm

Sunny

91°F
Dew Pt 71°F
Heat Index: 98°F
Wind from W

W 6 mph
Precip: 11%

3:00pm

Mostly Sunny

91°F
Dew Pt 71°F
Heat Index: 98°F
Wind from W

W 6 mph
Precip: 12%

4:00pm

Mostly Sunny

91°F
Dew Pt 71°F
Heat Index: 98°F
Wind from W

W 6 mph
Precip: 14%

5:00pm

Slight Chance Showers And Thunderstorms

90°F
Dew Pt 71°F
Heat Index: 96°F
Wind from W

W 6 mph
Precip: 16%

6:00pm

Slight Chance Showers And Thunderstorms

89°F
Dew Pt 72°F
Heat Index: 96°F
Wind from SW

SW 5 mph
Precip: 16%

7:00pm

Partly Cloudy

86°F
Dew Pt 72°F
Heat Index: 93°F
Wind from SW

SW 5 mph
Precip: 14%

8:00pm

Mostly Cloudy

82°F
Dew Pt 72°F
Heat Index: 87°F
Wind from SW

SW 5 mph
Precip: 13%

9:00pm

Mostly Clear

80°F
Dew Pt 72°F
Heat Index: 84°F
Wind from SW

SW 3 mph
Precip: 11%

10:00pm

Mostly Clear

78°F
Dew Pt 72°F
Wind from SW

SW 5 mph
Precip: 7%

11:00pm

Partly Cloudy

77°F
Dew Pt 73°F
Wind from SW

SW 5 mph
Precip: 8%

Sat
12:00am

Partly Cloudy

77°F
Dew Pt 72°F
Wind from SW

SW 3 mph
Precip: 11%

Sat
1:00am

Partly Cloudy

76°F
Dew Pt 72°F
Wind from SW

SW 3 mph
Precip: 13%

Sat
2:00am

Mostly Clear

76°F
Dew Pt 72°F
Wind from SW

SW 3 mph
Precip: 13%

Sat
3:00am

Mostly Clear

74°F
Dew Pt 72°F
Wind from SW

SW 3 mph
Precip: 12%

Sat
4:00am

Partly Cloudy

74°F
Dew Pt 71°F
Wind from SW

SW 3 mph
Precip: 10%

Sat
5:00am

Partly Cloudy

74°F
Dew Pt 71°F
Wind from SW

SW 5 mph
Precip: 8%

Sat
6:00am

Mostly Sunny

73°F
Dew Pt 71°F
Wind from SW

SW 3 mph
Precip: 11%

Sat
7:00am

Mostly Sunny

74°F
Dew Pt 72°F
Wind from SW

SW 5 mph
Precip: 8%

Sat
8:00am

Mostly Sunny

75°F
Dew Pt 72°F
Wind from SW

SW 5 mph
Precip: 3%

Sat
9:00am

Partly Sunny

78°F
Dew Pt 73°F
Wind from W

W 6 mph
Precip: 5%

Sat
10:00am

Mostly Sunny

81°F
Dew Pt 73°F
Heat Index: 86°F
Wind from SW

SW 7 mph
Precip: 6%

Sat
11:00am

Mostly Sunny

84°F
Dew Pt 73°F
Heat Index: 90°F
Wind from SW

SW 7 mph
Precip: 8%

VIEW ON NWS WEB SITE

FORECAST DISCUSSION

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 062345
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
745 PM EDT Thu Aug 6 2026

.WHAT HAS CHANGED...
No significant changes. Although it remains very warm into the 
weekend, the level of heat does begin to drop off so the current
thought is to not extend the Heat Advisory beyond Friday.

&&

.KEY MESSAGES...

- Heat and humidity continues into Friday, with only a few
  afternoon showers or thunderstorms.

- Cool front brings scattered storms Saturday. Less humidity
  levels and dry weather Sunday but daily shower/storm chances
  resume early to midweek.

&&

.DISCUSSION...
KEY MESSAGE 1...Heat and humidity continues into Friday, with 
only a few afternoon showers or thunderstorms.

Latest model guidance does not show much need for changes to the
forecast for the remainder of today and tomorrow. As typical
with convection, even hi-res models struggle with timing,
placement and coverage. We have already seen a few showers
develop across areas further east (ie: Boston area to the North
Shore) than was previously anticipated. With the SW flow, the
south coast sea breeze is moving northward and thus expect
shower chances to remain north of this boundary as the
afternoon/evening goes on. We do have a decent amount of Mixed
Layer CAPE (MLCAPE) on the order of 2000 J/kg, but mid level
lapse rates are very meager, so not expecting any substantial
thunderstorm development. Convection will wane with sunset. With
the very moist airmass, we will again see the development of
stratus and fog later tonight, especially across the southern
half of SNE. Like today, those clouds and fog will "burn" off
tomorrow morning. No real airmass change, though if anything, it
will be a degree or two warmer. 925mb temperatures today were in
the 23-24C range, and that rises to 25-26C on Friday. When
combined with dewpoints in the 70s, heat index (feels like)
temperatures will top out well into the 90s, if not low 100s.
Thus the Heat Advisory will continue. There will be a warm layer
aloft (above roughly 850mb/5000ft) that will act as a lid to
keep convection at bay. Though an isolated afternoon shower or
thunderstorm is possible, they should be more the exception and
likely contained to far western areas where the hilly terrain
will help focus convective development. Guidance is a little
unclear for Friday night, but we might see some late evening
convection move in from the west. Just kept with NBM PoPs
showing roughly 20-40% PoPs overnight for the CT River Valley
and points east. 



KEY MESSAGE2...Cool front brings scattered storms Saturday. 
Less humidity levels and dry weather Sunday but daily 
shower/storm chances resume early to midweek.

All in all a general sameness to the weather pattern day-by-day 
through Saturday, with warm temperatures in the 80s with very high 
humidity levels, to go along with daily shower and thunderstorm 
chances following the diurnal cycle. Saturday offers a better shot a 
a bit more thunderstorm coverage with a cool front, although the 
risk for organized severe weather looks minimal, kept in check by 
weak windfields aloft leading to deep layer shear magnitudes in the 
25-30 kt range and generally slower SWly storm motions. This front 
will offer somewhat lower humidity levels, basically knocking 
dewpoints down from current "oppressive" values in the low to mid 
70s to "humid" mid/upper 60s levels. Storms would be capable of 
lightning and heavy rain, with the strongest of those storms capable 
of frequent lightning and localized downdrafts capable of sporadic 
wind damage, but those should be a very small subset of the storms.  

Weak subsidence and marginally lower dewpoints could limit or 
mitigate shower/storm chances on Sunday, although still with the 
usual summer warmth. The risk for daily shower and thunderstorm 
chances also increases early to mid next week as the Northeast 
states become more influenced by a somewhat stronger belt of 
westerly midlevel flow. With stronger winds aloft with that comes a 
somewhat better chance for storms becoming strong/severe but the 
timing is still uncertain. 

Stayed fairly close to NBM forecast values during this period.

&&

.AVIATION /00Z FRIDAY THROUGH TUESDAY/...
Forecaster Confidence Levels...

Low - less than 30 percent. 
Moderate - 30 to 60 percent. 
High - greater than 60 percent.

00z TAF Update: 

Tonight: Moderate confidence.

SHRA/embedded TS in interior Southern New England expected to 
weaken/dissipate by 01z. VFR should then prevail for most TAFs,
but coastal stratus/mist to advance northward from the south
coast around 02-04z to PVD and then potentially as far north as
ORH/BDL. Latest guidance seems more pessimistic on stratus
making it north of there after 09z, so left TEMPO in for BOS 
for now. SW winds 5-10 kt.

Friday though Friday Night: High confidence overall but 
moderate on SHRA/TS timing. 

Stratus dissipates/retreats to the waters between 13-16z (later
Cape and Islands), to mainly VFR conditions. Risk for TSRA again
tomorrow coming in from NY but the start timing varies from 
as soon as 18-20z to as late as 03z. This will need some
refinement but best estimate is the 18-20z timing. Will likely 
also have stratus/fog return to PVD and the Cape airports Friday
night. SW winds 5-10 kt, though seabreezes return to eastern MA
coast again before turning SW ~00z.

KBOS Terminal...Moderate confidence. VFR should generally
prevail but possible MVFR stratus 09-12z near/south of BOS 
with a better chance toward OWD. Seabreeze should return again
Fri but be later (after 17z). 

KBDL Terminal...Moderate confidence. VCSH nearby terminal
through 01z, then trending VFR tonight, with possible early-
morning fog/stratus. Risk for TSRA again tomorrow but timing is
uncertain.

Outlook /Friday Night through Tuesday/...

Saturday: VFR. Breezy. Chance SHRA, chance TSRA.

Saturday Night through Sunday: VFR. Breezy. 

Sunday Night: VFR. 

Monday: VFR. Breezy. 

Monday Night: VFR. Slight chance SHRA.

Tuesday: VFR. Breezy. Chance SHRA, slight chance TSRA.

&&

.MARINE...
Forecaster Confidence Levels...

Low - less than 30 percent. 
Moderate - 30 to 60 percent. 
High - greater than 60 percent.

Through Friday... High Confidence.

No significant changes to the forecast. Overall weather pattern
shows a large area of high pressure off the east coast. This
will continue to produce a SW flow across the entire region into
the weekend. 

Outlook /Friday Night through Tuesday/...

Saturday: Winds less than 25 kt. Areas of seas approaching
5 ft. 

Saturday Night: Winds less than 25 kt. Seas up to 5 ft. Slight
chance of rain showers. 

Sunday through Sunday Night: Winds less than 25 kt. Areas of
seas approaching 5 ft. 

Monday: Winds less than 25 kt. 

Monday Night: Winds less than 25 kt. Slight chance of rain
showers. 

Tuesday: Winds less than 25 kt. Areas of seas approaching 5 ft.
Slight chance of rain showers.

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...Heat Advisory until 8 PM EDT Friday for CTZ002>004.
MA...Heat Advisory until 8 PM EDT Friday for MAZ003>007-010>021-026.
RI...Heat Advisory until 8 PM EDT Friday for RIZ001>007.
MARINE...None.

&&

$$

DISCUSSION...Loconto/Nash
AVIATION...Loconto/Nash
MARINE...Loconto/Nash

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