Old Res Weather

Current Conditions [‒] Current Conditions [+]

35.1°F Colder than last hour.

1.7°C

Cold

Few Clouds

Today: Hi 84 °F

Tonight: Lo 64 °F

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

Humidity: 90%

UV Index: 0.0 None

Air Quality Index: 48

Good

(Fine Particles)

Barometer: 29.00 in Falling 0.05 inHg/hr

982 mb

Rain Rate: 0.00 in/hr

Rain Today: 0.01 in

Rain Sunday: 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 - Extreme Heat Watch
- SEE ALL NEARBY ALERTS -

NWS Weather Forecast -
Today, Tonight, & Tuesday through Sunday Night

Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Mon Jun 29, 2026 4:38am EDT

Overview:

- Warming trend takes hold. Confidence continues to increase in dangerous heat Wednesday through Friday.

- Showers and thunderstorms possible mid to late week.

Extreme Heat Watch

Today:

Sunny

Hi 84 °F

Sunny, with a high near 84. Northeast wind 5 to 8 mph.

Tonight:

Mostly Clear

Lo 64 °F

Mostly clear, with a low around 64. South wind 3 to 7 mph.

Tuesday:

Mostly Sunny

Hi 90 °F

Mostly sunny, with a high near 90. Southwest wind 5 to 9 mph.

Tuesday Night:

Chance Rain Showers

Lo 69 °F

A chance of rain showers after 7pm. Mostly cloudy, with a low around 69. Southwest wind around 9 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.

Wednesday:

Chance Rain Showers then Mostly Sunny

Hi 97 °F

A chance of rain showers before 9am. Mostly sunny, with a high near 97. Southwest wind around 9 mph. Chance of precipitation is 40%.

Wednesday Night:

Slight Chance Rain Showers

Lo 75 °F

A slight chance of rain showers before 1am. Partly cloudy, with a low around 75. Southwest wind around 7 mph. Chance of precipitation is 20%.

Thursday:

Sunny

Hi 102 °F

Sunny, with a high near 102. West wind 6 to 9 mph.

Thursday Night:

Mostly Clear

Lo 79 °F

Mostly clear, with a low around 79. West wind 5 to 8 mph.

Friday:

Mostly Sunny then Chance Showers And T-Storms

Hi 100 °F

Friday: Mostly Sunny then Chance Showers And Thunderstorms

A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 100. West wind 6 to 10 mph. Chance of precipitation is 30%.

Friday Night:

Chance Showers And T-Storms

Lo 73 °F

Friday Night: Chance Showers And Thunderstorms

A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 73. West wind 3 to 8 mph. Chance of precipitation is 30%.

Independence Day:

Mostly Sunny then Chance Showers And T-Storms

Hi 93 °F

Independence Day: Mostly Sunny then Chance Showers And Thunderstorms

A slight chance of rain showers between noon and 2pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 93. West wind 3 to 8 mph. Chance of precipitation is 40%.

Saturday Night:

Chance Showers And T-Storms

Lo 69 °F

Saturday Night: Chance Showers And Thunderstorms

A chance of showers and thunderstorms before 8pm, then a chance of showers and thunderstorms between 8pm and 10pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Southwest wind around 6 mph. Chance of precipitation is 40%.

Sunday:

Chance Showers And T-Storms

Hi 88 °F

Sunday: Chance Showers And Thunderstorms

A slight chance of rain showers before 8am, then a chance of showers and thunderstorms. Mostly sunny, with a high near 88. Southwest wind 3 to 8 mph. Chance of precipitation is 30%.

Sunday Night:

Chance Showers And T-Storms

Lo 66 °F

Sunday Night: Chance Showers And Thunderstorms

A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Northeast wind 3 to 7 mph.

FULL FORECAST

NWS Hourly Forecast -
Today 1pm through Wed 12am

Issued by:
National Weather Service Boston / Norton, MA
Updated Mon Jun 29, 2026 4:38am EDT

1:00pm

Sunny

81°F
Dew Pt 62°F
Heat Index: 82°F
Wind from NE

NE 5 mph
Precip: 0%

2:00pm

Sunny

81°F
Dew Pt 62°F
Heat Index: 82°F
Wind from E

E 6 mph
Precip: 0%

3:00pm

Sunny

80°F
Dew Pt 62°F
Heat Index: 81°F
Wind from E

E 7 mph
Precip: 1%

4:00pm

Sunny

80°F
Dew Pt 61°F
Heat Index: 81°F
Wind from E

E 8 mph
Precip: 1%

5:00pm

Sunny

80°F
Dew Pt 61°F
Heat Index: 81°F
Wind from E

E 7 mph
Precip: 1%

6:00pm

Mostly Clear

78°F
Dew Pt 60°F
Wind from E

E 7 mph
Precip: 1%

7:00pm

Mostly Clear

76°F
Dew Pt 60°F
Wind from E

E 6 mph
Precip: 0%

8:00pm

Mostly Clear

74°F
Dew Pt 60°F
Wind from SE

SE 5 mph
Precip: 0%

9:00pm

Mostly Clear

72°F
Dew Pt 60°F
Wind from SE

SE 5 mph
Precip: 0%

10:00pm

Clear

70°F
Dew Pt 60°F
Wind from S

S 3 mph
Precip: 0%

11:00pm

Clear

70°F
Dew Pt 61°F
Wind from S

S 5 mph
Precip: 0%

Tue
12:00am

Clear

69°F
Dew Pt 61°F
Wind from S

S 6 mph
Precip: 0%

Tue
1:00am

Clear

68°F
Dew Pt 60°F
Wind from S

S 5 mph
Precip: 0%

Tue
2:00am

Clear

66°F
Dew Pt 60°F
Wind from SW

SW 6 mph
Precip: 0%

Tue
3:00am

Mostly Clear

66°F
Dew Pt 59°F
Wind from SW

SW 5 mph
Precip: 0%

Tue
4:00am

Mostly Clear

65°F
Dew Pt 59°F
Wind from SW

SW 5 mph
Precip: 0%

Tue
5:00am

Mostly Clear

64°F
Dew Pt 59°F
Wind from SW

SW 6 mph
Precip: 0%

Tue
6:00am

Sunny

65°F
Dew Pt 59°F
Wind from SW

SW 6 mph
Precip: 0%

Tue
7:00am

Sunny

68°F
Dew Pt 61°F
Wind from SW

SW 6 mph
Precip: 1%

Tue
8:00am

Sunny

72°F
Dew Pt 62°F
Wind from SW

SW 5 mph
Precip: 1%

Tue
9:00am

Mostly Sunny

76°F
Dew Pt 63°F
Wind from SW

SW 5 mph
Precip: 1%

Tue
10:00am

Mostly Sunny

81°F
Dew Pt 65°F
Heat Index: 83°F
Wind from SW

SW 5 mph
Precip: 0%

Tue
11:00am

Mostly Sunny

84°F
Dew Pt 66°F
Heat Index: 86°F
Wind from SW

SW 6 mph
Precip: 0%

Tue
12:00pm

Partly Sunny

86°F
Dew Pt 65°F
Heat Index: 88°F
Wind from SW

SW 7 mph
Precip: 1%

Tue
1:00pm

Partly Sunny

87°F
Dew Pt 65°F
Heat Index: 89°F
Wind from SW

SW 7 mph
Precip: 1%

Tue
2:00pm

Partly Sunny

88°F
Dew Pt 65°F
Heat Index: 90°F
Wind from SW

SW 8 mph
Precip: 5%

Tue
3:00pm

Partly Sunny

88°F
Dew Pt 65°F
Heat Index: 90°F
Wind from SW

SW 8 mph
Precip: 2%

Tue
4:00pm

Mostly Sunny

88°F
Dew Pt 66°F
Heat Index: 90°F
Wind from SW

SW 9 mph
Precip: 2%

Tue
5:00pm

Partly Sunny

87°F
Dew Pt 67°F
Heat Index: 90°F
Wind from SW

SW 9 mph
Precip: 5%

Tue
6:00pm

Mostly Cloudy

85°F
Dew Pt 67°F
Heat Index: 88°F
Wind from SW

SW 9 mph
Precip: 12%

Tue
7:00pm

Slight Chance Rain Showers

83°F
Dew Pt 66°F
Heat Index: 85°F
Wind from SW

SW 9 mph
Precip: 16%
Rain: 0.01 in

Tue
8:00pm

Slight Chance Rain Showers

80°F
Dew Pt 66°F
Heat Index: 82°F
Wind from SW

SW 8 mph
Precip: 19%

Tue
9:00pm

Slight Chance Rain Showers

77°F
Dew Pt 65°F
Wind from SW

SW 9 mph
Precip: 24%

Tue
10:00pm

Chance Rain Showers

76°F
Dew Pt 64°F
Wind from SW

SW 9 mph
Precip: 29%

Tue
11:00pm

Chance Rain Showers

75°F
Dew Pt 63°F
Wind from SW

SW 8 mph
Precip: 35%

Wed
12:00am

Chance Rain Showers

74°F
Dew Pt 62°F
Wind from SW

SW 8 mph
Precip: 40%

VIEW ON NWS WEB SITE

FORECAST DISCUSSION

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 291117
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
717 AM EDT Mon Jun 29 2026

.WHAT HAS CHANGED...
No significant changes.

&&

.KEY MESSAGES...

- Warming trend takes hold. Confidence continues to increase in
  dangerous heat Wednesday through Friday.

- Showers and thunderstorms possible mid to late week.

&&

.DISCUSSION...
KEY MESSAGE 1...Warming trend takes hold. Confidence continues to 
increase in dangerous heat Wednesday through Friday.

Morning fog that developed along the south coast and parts of the 
Cape (plus Martha's Vineyard) should erode away after sunrise this 
morning. High pressure continues to exert its influence over the 
region ahead of a strengthening upper level ridge to our west. Highs 
today climb into the mid to upper 80s for most, staying a bit cooler 
towards the coasts and over the Cape and Islands.

Not much has changed in the overall trends of the forecast 
overnight. A strong upper level ridge continues building in from the 
west, shifting over the northeast CONUS late this week. Ensembles 
remain in strong agreement that we will see temperatures over 90-95 
starting Wednesday and continuing through the rest of the week. The 
highest probabilities of temperatures reaching and/or exceeding 100F 
over urban areas and the river valleys, especially on Thursday, also 
continue to increase. GEFS probabilities of 100F+ for Thursday 
afternoon range now reach up to 60-70 percent with Canadian ensemble 
probabilities peaking slightly higher at up to 80 percent. All 
ensembles are in pretty good agreement having the highest 
probabilities in the CT Valley and towards the Boston metro up into 
the Merrimack Valley. The continued overall consensus across the 
different guidance suite aids in increasing confidence in the risk 
for this dangerous heat overall. Mean 850 mb temperatures across the 
ensembles continue to reach 20-24C during this stretch, and 925 mb 
temperatures in the deterministic guidance continue to key in on 25C 
temperatures and higher, even to 30C. Notably, the GFS has the 
highest 925 mb temperatures centered over CT and eastern MA. This is 
all before dew points and overall moisture are being taken into 
account. Considering dew points are expected to be in the upper 60s 
and even into the low 70s, heat indices to 110F are not out of the 
question for some areas. An Extreme Heat Watch will be in effect 
from Wednesday morning through Friday evening for this reason, along 
with limited overnight temperature recovery. Major (3/4) to Extreme 
(4/4) HeatRisk impacts are very possible, with the Extreme impacts 
more likely over urban areas and in river valleys.

As briefly highlighted above, another issue with these high daytime 
temperatures is that not much relief is expected overnight. NBM has 
low probabilities for temperatures getting below 70F overnight 
between Wednesday and Friday, generally below 10 percent across much 
of southern New England. It also has probabilities between 75-90 
percent for early Thursday morning and early Friday morning 
temperatures in eastern MA (especially Boston) remaining above 75F 
from overnight. The other ensembles are equally pessimistic with 
recovery; GEFS, ECMWF ENS, and the Canadian ensemble are all 
essentially showing maximum probabilities that the region stays at 
or above 70F overnight between Wednesday and Friday night.

KEY MESSAGE 2...Showers and thunderstorms possible mid to late week.

Shortwaves originating from a disturbance in central Canada will 
track eastward and may impact southern New England before the upper 
level ridge fully builds up over the region. These waves will track 
along the eastern periphery, with one likely arriving Tuesday night 
and another arriving once the ridge starts breaking down towards the 
end of the week. Showers and storms are a possibility Tuesday night, 
and some guidance is hinting at increased instability overnight that 
could fuel any storms that do develop. CSU ML probs and other 
guidance aren't showing much in the way of a severe signal at this 
time, but we will continue to monitor for any risk that could 
develop. With the ridge fully build up over the region Wednesday and 
Thursday, chances for any showers or storms drop significantly. 
Chances return as the ridge breaks down towards the end of the week, 
and the risk for severe weather could be higher towards Friday and 
Saturday. CIPS analogs are hinting at it particularly for western 
and central MA. More refined details will come into the picture as 
we get closer to both events.

&&

.AVIATION /12Z MONDAY THROUGH FRIDAY/...
Forecaster Confidence Levels...

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

12Z TAF Update:

Today...High confidence. 

Most areas have lifted to VFR, with some scattered areas of 
BCFG lingering thru 13z along the south coast/Cape/Island 
terminals. Light winds, with seabreezes developing at BOS by 15z
and PVD by 16-18z. Though, BOS could see onshore winds as early
as 12-13z.

Tonight...High confidence.

IFR likely to return with fog overnight across SE MA, RI, CT, 
and the Cape and Islands. Winds mostly S, remaining light and 
going calm from time to time. 

Tuesday...High confidence.

VFR. Winds pick up in the afternoon from the SSW, gusting to 20
kt across much of SE MA, RI, and CT. Showers possible towards 
the late evening hours.

KBOS Terminal...High Confidence in TAF.

KBDL Terminal...High Confidence in TAF.

Outlook /Tuesday Night through Friday/...

Tuesday Night: VFR. Breezy. Chance SHRA.

Wednesday through Wednesday Night: VFR. Breezy. Slight chance
SHRA.

Thursday through Thursday Night: VFR. Breezy. 

Friday: VFR. Breezy. Slight 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 Tuesday: High confidence. 

Winds and seas remain below small craft advisory thresholds,
with light east/southeast winds through tonight and seas 3 ft 
or less all waters. Winds near shore/port today could turn east 
around 10 kt due to sea/bay breezes. Fog that erodes through the
day today may make a return tonight. Winds Tuesday could gust to
25 kt occasionally in the afternoon over the southern coastal
and eastern outer waters.

Outlook /Tuesday Night through Friday/...

Tuesday Night: Low risk for Small Craft Advisory winds with
gusts up to 25 kt. Areas of seas approaching 5 ft. Chance of
rain showers. 

Wednesday: Moderate risk for Small Craft Advisory winds with
gusts up to 30 kt. Seas up to 5 ft. Slight chance of rain
showers. 

Wednesday Night: Moderate risk for Small Craft Advisory winds
with gusts up to 25 kt. Seas up to 5 ft. Chance of rain
showers. 

Thursday: Low risk for Small Craft Advisory winds with gusts up
to 20 kt. Areas of seas approaching 5 ft. 

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

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

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...Extreme Heat Watch from Wednesday morning through Friday 
     evening for CTZ002>004.
MA...Extreme Heat Watch from Wednesday morning through Friday 
     evening for MAZ002>021-026.
RI...Extreme Heat Watch from Wednesday morning through Friday 
     evening for RIZ001>007.
MARINE...None.

&&

$$

DISCUSSION...Hrencecin
AVIATION...McMinn
MARINE...Hrencecin

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