Old Res Weather
Lexington, Massachusetts, USA
- Clear
-
35.1°F / 1.7°C
-
32.4°F
- 90%
- Calm, 10-min avg: Calm, gust: None
-
- 10 miles
- 0.01 in
- $VPuv None
Current Conditions [‒] Current Conditions [+]
35.1°F
1.7°C
Cold
Clear
Overnight: Lo 62 °F
Saturday: Hi 72 °F
Dew Point:
32.4°F
Humidity: 90%
UV Index: 0.0 None
Barometer:
mb
Rain Rate: 0.00 in/hr
Rain Today: 0.01 in
Rain Friday: 0.00 in
Visibility: 10 miles
Wind:
Now: Calm
Avg: Calm
Gusts: 0 mph
Alerts / Advisories [‒] Alerts / Advisories [+]
Forecast [‒] Forecast [+]
NWS Weather Forecast -
Overnight,
Saturday,
&
Saturday Night
through
Friday
Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Sat Sep 5, 2026 2:13am EDT
Overview:
- A mainly dry day on tap except along and east of the I- 495 corridor where there is a chance for afternoon showers and perhaps a thunderstorm or two.
- Fall-like feel for Sunday, then more seasonable for Labor Day. A gradual warm-up throughout the week with continued dry weather through at least Wednesday or Thursday.
- Elevated risk for dangerous rip currents through the Holiday Weekend, especially Sunday into Labor Day.
Overnight:
Mostly Clear
Lo 62 °F
Mostly clear, with a low around 62. Northwest wind around 6 mph.
Saturday:
Mostly Sunny then Chance Rain Showers
Hi 72 °F
A chance of rain showers after 2pm. Mostly sunny, with a high near 72. North wind around 8 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Saturday Night:
Chance Rain Showers then Partly Cloudy
Lo 56 °F
A chance of rain showers before 9pm. Partly cloudy, with a low around 56. Northeast wind around 5 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Sunday:
Sunny
Hi 71 °F
Sunny, with a high near 71. North wind around 7 mph.
Sunday Night:
Mostly Clear
Lo 50 °F
Mostly clear, with a low around 50. Northwest wind 2 to 6 mph.
Labor Day:
Sunny
Hi 77 °F
Sunny, with a high near 77. Northwest wind 5 to 8 mph.
Monday Night:
Mostly Clear
Lo 59 °F
Mostly clear, with a low around 59. West wind around 5 mph.
Tuesday:
Mostly Sunny
Hi 78 °F
Mostly sunny, with a high near 78. West wind around 6 mph.
Tuesday Night:
Mostly Cloudy
Lo 60 °F
Mostly cloudy, with a low around 60. West wind around 5 mph.
Wednesday:
Partly Sunny then Slight Chance Rain Showers
Hi 77 °F
A slight chance of rain showers after 5pm. Partly sunny, with a high near 77. South wind 3 to 10 mph, with gusts as high as 23 mph.
Wednesday Night:
Chance Rain Showers
Lo 67 °F
A chance of rain showers. Mostly cloudy, with a low around 67. Southwest wind around 12 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
Thursday:
Chance Rain Showers then Partly Sunny
Hi 80 °F
A chance of rain showers before 11am. Partly sunny, with a high near 80. West wind around 13 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.
Thursday Night:
Partly Cloudy
Lo 59 °F
Partly cloudy, with a low around 59. Northwest wind 7 to 12 mph, with gusts as high as 25 mph.
Friday:
Mostly Sunny
Hi 72 °F
Mostly sunny, with a high near 72. Northwest wind around 8 mph.
NWS Hourly Forecast -
Today 5am through Sun 4pm
Issued by:
National Weather Service Boston / Norton, MA
Updated Sat Sep 5, 2026 2:13am EDT
5:00am
Dew Pt 59°F
NW 6 mphPrecip: 0%
6:00am
Dew Pt 58°F
NW 6 mphPrecip: 0%
7:00am
Dew Pt 59°F
NW 6 mphPrecip: 0%
8:00am
Dew Pt 60°F
N 6 mphPrecip: 1%
9:00am
Dew Pt 61°F
N 7 mphPrecip: 2%
10:00am
Dew Pt 62°F
N 7 mphPrecip: 4%
11:00am
Dew Pt 62°F
NE 8 mphPrecip: 6%
12:00pm
Dew Pt 62°F
NE 8 mphPrecip: 9%
1:00pm
Dew Pt 62°F
NE 8 mphPrecip: 12%
2:00pm
Dew Pt 61°F
NE 8 mphPrecip: 27%
Rain: 0.01 in
3:00pm
Dew Pt 61°F
NE 7 mphPrecip: 33%
Rain: 0.01 in
4:00pm
Dew Pt 61°F
NE 7 mphPrecip: 34%
Rain: 0.02 in
5:00pm
Dew Pt 60°F
E 7 mphPrecip: 35%
Rain: 0.02 in
6:00pm
Dew Pt 60°F
NE 5 mphPrecip: 36%
Rain: 0.02 in
7:00pm
Dew Pt 59°F
NE 3 mphPrecip: 29%
Rain: 0.01 in
8:00pm
Dew Pt 59°F
NE 2 mphPrecip: 17%
9:00pm
Dew Pt 59°F
N 2 mphPrecip: 12%
10:00pm
Dew Pt 59°F
N 2 mphPrecip: 9%
11:00pm
Dew Pt 58°F
N 3 mphPrecip: 8%
12:00am
Dew Pt 58°F
N 3 mphPrecip: 8%
1:00am
Dew Pt 58°F
N 3 mphPrecip: 9%
2:00am
Dew Pt 57°F
N 5 mphPrecip: 6%
3:00am
Dew Pt 57°F
N 5 mphPrecip: 7%
4:00am
Dew Pt 56°F
N 5 mphPrecip: 6%
5:00am
Dew Pt 56°F
N 5 mphPrecip: 4%
6:00am
Dew Pt 55°F
N 5 mphPrecip: 5%
7:00am
Dew Pt 55°F
N 5 mphPrecip: 4%
8:00am
Dew Pt 56°F
N 6 mphPrecip: 2%
9:00am
Dew Pt 56°F
N 6 mphPrecip: 2%
10:00am
Dew Pt 56°F
N 6 mphPrecip: 2%
11:00am
Dew Pt 56°F
N 7 mphPrecip: 3%
12:00pm
Dew Pt 55°F
N 7 mphPrecip: 4%
1:00pm
Dew Pt 54°F
N 7 mphPrecip: 3%
2:00pm
Dew Pt 54°F
N 6 mphPrecip: 3%
3:00pm
Dew Pt 54°F
N 6 mphPrecip: 2%
4:00pm
Dew Pt 54°F
NW 5 mphPrecip: 1%
FORECAST DISCUSSION
Area Forecast Discussion
for Boston / Norton, MA
000
FXUS61 KBOX 050629
AFDBOX
Area Forecast Discussion
National Weather Service Boston/Norton MA
229 AM EDT Sat Sep 5 2026
.WHAT HAS CHANGED...
Issued a couple of marine and coastal headlines for the holiday
weekend. For boaters, a Small Craft Advisory has been issued and is
in effect from 2 am to 8 pm Sunday. For beachgoers, a Rip Current
Statement is in effect for east-facing beaches and the islands from
7 am to 8 pm through much of the day on Sunday.
&&
.KEY MESSAGES...
- A mainly dry day on tap except along and east of the I- 495 corridor
where there is a chance for afternoon showers and perhaps a
thunderstorm or two.
- Fall-like feel for Sunday, then more seasonable for Labor
Day. A gradual warm-up throughout the week with continued dry
weather through at least Wednesday or Thursday.
- Elevated risk for dangerous rip currents through the Holiday
Weekend, especially Sunday into Labor Day.
&&
.DISCUSSION...
KEY MESSAGE 1... A mainly dry day on tap except along and east of
the I-495 corridor where there is a chance for afternoon showers and
perhaps a thunderstorm or two.
The main weather maker for the next day or so will be a broad cutoff
low pressure over the Canadian Maritimes. As a result, some
unsettled weather is possible for the start of the Labor Day Holiday
weekend, more details ahead. Should see a rather pleasant start to
the day with mainly clear skies and temperatures in the lower to mid
60s. Temps climb into the lower to mid 70s, and when combined with
cooling aloft (925 mb temps cooling to 12-14C), will result in steep
low level lapse rates. These lapse rates will drive diurnal cumulus
which likely builds into areas of showers and a few thunderstorms as
SFC CAPE values climb to 300-500 J/kg. High-res guidance features an
inverted trough moving across the CWA from NE to SW between 18-22z.
This feature serves as a focus for convection and more organized
precipitation chances during that timeframe. Believe the latest NBM
has a good handle on these changes with hourly POPs increasing to 45-
50 percent across interior areas. Not expecting a washout by any
means, but a brief period of heavy rain is possible as these showers
move through. Any lingering showers quickly dissipate with the loss
of daytime heating this evening. Expect a cooler night as somewhat
ideal conditions for radiational cooling are expected with light
winds and mostly clear skies. Lows will generally be in the low to
mid 50s and even the upper 40s in more favorable locations such as
local river valleys.
KEY MESSAGE 2...Fall-like feel for Sunday, then more seasonable for
Labor Day. A gradual warm-up throughout the week with continued dry
weather through at least Wednesday or Thursday.
Saturday night through the middle of the upcoming week features
fairly benign conditions, with little in the way of rainfall
chances. The 500mb forecast map shows somewhat of an omega ridge
centered across the middle of the country, with a closed mid-level
low centered over Nova Scotia Sunday afternoon. The omega ridge
flattens out, with semi-zonal flow developing across the coast by
Tuesday and then shortwave troughing for late week across the
northeastern states, likely leading to the next chance for active
weather for southern New England. At the surface, high pressure
builds in from the northwest Sunday, with its origins in northern
Canada. Surface high pressure remains the dominant weather feature
throughout the majority of the forecast period, leading to a stretch
of dry weather.
Temperatures aloft are cooler Sunday, associated with that mid-level
low east of New England. 925mb temperatures are only around +8C to
+10C, which with boundary layer mixing supports highs in the upper
60s to low 70s. Thus, Sunday will feel very much like autumn, with a
blend of sun and clouds, northerly winds and dew points in the low
50s. While winds won't be overly strong, the combination of cooler
temperatures and lower dew points will make for a rather crisp day.
Sunday night should feature decent radiational cooling with high
pressure settling across the region, though this will depend on how
quickly winds diminish. Did opt for a blend of colder guidance on
Sunday night, which brought temperatures down into the upper 40s to
low 50s for most of southern New England, with urban centers like
Boston remaining in the middle 50s.
Good news if you aren't ready for pumpkin spice weather, as
temperatures will trend warmer throughout the week from WAA aloft.
925mb temperatures climb +14C to +18C, supporting near-seasonable
highs in the upper 70s for Labor Day, then upper 70s to lower 80s
Tuesday into the middle part of next week. Humidity remains
tolerable as well, with dew points generally in the upper 50s to
around 60F. Labor Day itself looks quiet and dry, though there will
be a high risk for rip currents along the ocean beaches.
KEY MESSAGE 3...Elevated risk for dangerous rip currents through the
Holiday Weekend, especially Sunday into Labor Day.
Persistent northeast flow, long-period swell, and offshore seas of 4-
7 feet will continue to support an elevated risk for dangerous rip
currents through the Holiday Weekend, especially Sunday into Labor
Day for east-facing ocean beaches. With otherwise quiet weather
expected, those heading to the beach should be mindful that ocean
conditions may still be hazardous. Be sure to check with local beach
staff or lifeguards regarding ocean conditions before entering the
water.
&&
.AVIATION /06Z SATURDAY THROUGH WEDNESDAY/...
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
UPDATE: 06Z TAF
Rest of Tonight...Moderate confidence.
VFR for the majority of terminals through daybreak. Slight
chance of MVFR across the Cape and Islands. Light northwest
winds, with light north- northeast wind for eastern MA.
Today...Moderate confidence.
Forecast guidance suggest there may be two cloud bases today,
one being MVFR to low-end VFR (020-040)VFR, then a secondary
base between 050-080. Isolated SHRA/TSRA threat 19z-23z. North-
northeast winds 10-15 kts.
Saturday night...High confidence.
Lower-end VFR to MVFR ceilings. Winds light and variable.
KBOS Terminal...Moderate confidence in TAF.
Where confidence is moderate is with the development of MVFR
ceilings, whether the deck of clouds are SCT or BKN/OVC. Also
moderate confidence in the risk for -SHRA between 18-22z this
afternoon.
KBDL Terminal...High confidence in TAF.
Outlook /Sunday Night through Wednesday/...
Sunday Night through Tuesday Night: VFR.
Wednesday: VFR. Windy with local gusts up to 30 kt. Slight
chance SHRA.
&&
.MARINE...
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
Through Sunday...
Winds shift N and NE today sustained to 10-15 kt. Seas 2-3 ft,
increasing slightly heading into Sunday. Moderate chance of
showers later this afternoon across much of the waters. Slight
chance for isolated thunderstorms. Small Craft conditions
develop across the eastern outer waters after 06z Sunday
lingering through much of the day. Rip Current Statement is in
effect from early Sunday morning to the evening.
Outlook /Sunday Night through Wednesday/...
Sunday Night: Winds less than 25 kt. Seas up to 5 ft.
Labor Day: Winds less than 25 kt. Areas of seas approaching
5 ft.
Monday Night: Winds less than 25 kt. Seas locally approaching
5 ft.
Tuesday through Tuesday Night: Winds less than 25 kt.
Wednesday: Low risk for Small Craft Advisory winds with local
gusts up to 30 kt. Seas locally approaching 5 ft.
&&
.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...High Risk for Rip Currents from late tonight through Sunday evening
for MAZ007-014>016-019-022>024.
RI...None.
MARINE...Small Craft Advisory from 2 AM to 8 PM EDT Sunday for ANZ250-
254-255.
&&
$$
DISCUSSION...Dooley/FT
AVIATION...Dooley/FT
MARINE...Dooley/FT
Radar [‒] Radar [+]
Radar images courtesy Weather Underground / Intellicast.
Satellite [‒] Satellite [+]
Satellite images courtesy Weather Underground / Intellicast.
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UV Forecast [‒] UV Forecast [+]
UV Index forecast from the Environmental Protection Agency
UV Index forecast high for today: 2 Low
Current (Measured): 0.0 None
Precipitation [‒] Precipitation [+]
Note: Rain measured automatically by weather station. Rain totals do not necessarily include melted frozen precipitation.
For more accurate, manually measured rain data, see the Local Precip Data page.
0.00 in
Rain Rate (/hr):
0.00 in
Rain Last 60 min:
0.01 in
Rain Today:
0.00 in
Friday:
0.01 in
September:
1.26 in
2026
Daily Extremes [‒] Daily Extremes [+]
1:17pm
36.1°F
High today:
12:00am
25.2°F
Low today:
2:28pm
30.4°F
High Friday:
7:11am
16.2°F
Low Friday:
12:00am
25.2°F
Low wind chill today:
7:11am
16.2°F
Low wind chill Friday:
1:17pm
33.3°F
High dew pt today:
11:56pm
20.7°F
High dew pt Friday:
None
Wind gust today:
None
Wind gust Friday:
Sun / Moon [‒] Sun / Moon [+]
First Light:
6:11am
Sunrise:
6:39am
Sunset:
5:19pm
Twilight ends:
5:47pm
Daylight length:
10 hours 39 minutes
Phase:
Waning Crescent (82%)
Moon set:
8:18am
Moon rise:
9:38pm