Lexington, Massachusetts, USA
35.1°F
1.7°C
Cold
Mostly cloudy
This Afternoon: Hi 77 °F
Tonight: Lo 61 °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 Thursday: 0.00 in
Visibility: 10 miles
Wind:
Now: Calm
Avg: Calm
Gusts: 0 mph
Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Fri Jun 26, 2026 11:22am EDT
- Showers this morning dissipate heading into midday, then isolated thunderstorms possible in the afternoon/evening hours.
- Showers Saturday followed by a warming and drying trend that carries into next week.
- Warm and humid midweek, along with a risk of showers towards the second half of next week.
Slight Chance Showers And T-Storms
Hi 77 °F
A slight chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 77. South wind around 7 mph. Chance of precipitation is 20%.
Chance Showers And T-Storms then Mostly Cloudy
Lo 61 °F
A chance of showers and thunderstorms before 8pm, then a chance of showers and thunderstorms between 8pm and 10pm, then a slight chance of showers and thunderstorms between 10pm and 11pm. Mostly cloudy, with a low around 61. Southwest wind 1 to 5 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Mostly Sunny then Slight Chance Rain Showers
Hi 78 °F
A slight chance of rain showers after 1pm. Mostly sunny, with a high near 78. West wind 1 to 8 mph. Chance of precipitation is 20%.
Slight Chance Rain Showers then Mostly Cloudy
Lo 59 °F
A slight chance of rain showers before 10pm. Mostly cloudy, with a low around 59. East wind 1 to 7 mph. Chance of precipitation is 20%.
Mostly Sunny
Hi 83 °F
Mostly sunny, with a high near 83. Northeast wind 2 to 6 mph.
Partly Cloudy
Lo 62 °F
Partly cloudy, with a low around 62. Southwest wind around 5 mph.
Sunny
Hi 86 °F
Sunny, with a high near 86. Northeast wind 2 to 7 mph.
Partly Cloudy
Lo 66 °F
Partly cloudy, with a low around 66. South wind around 6 mph.
Chance Rain Showers
Hi 89 °F
A chance of rain showers after 9am. Mostly sunny, with a high near 89. Southwest wind 3 to 7 mph. Chance of precipitation is 30%.
Chance Rain Showers
Lo 68 °F
A chance of rain showers. Mostly cloudy, with a low around 68. Southwest wind around 7 mph. Chance of precipitation is 40%.
Chance Rain Showers then Slight Chance Showers And T-Storms
Hi 90 °F
A chance of rain showers before 2pm, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 90. North wind 5 to 8 mph. Chance of precipitation is 30%.
Slight Chance Showers And T-Storms then Partly Cloudy
Lo 70 °F
A slight chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 70. South wind around 7 mph.
Mostly Sunny then Slight Chance Showers And T-Storms
Hi 94 °F
A slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 94. West wind 5 to 8 mph.
Slight Chance Showers And T-Storms then Partly Cloudy
Lo 71 °F
A slight chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 71. West wind around 7 mph.
Issued by:
National Weather Service Boston / Norton, MA
Updated Fri Jun 26, 2026 11:22am EDT

S 7 mph
S 7 mph
S 7 mph
S 6 mph
S 6 mph
S 5 mph
SW 3 mph
SW 1 mph
SW 1 mph
SW 1 mph
SW 1 mph
SW 1 mph
SW 2 mph
W 2 mph
W 2 mph
W 2 mph
NW 2 mph
NW 2 mph
NW 3 mph
NW 3 mph
NW 3 mph
NW 3 mph
NW 3 mph
NW 3 mph
W 2 mph
W 1 mph
SW 3 mph
SE 6 mph
E 8 mph
E 7 mph
E 7 mph
E 6 mph
SE 5 mph
SE 3 mph
S 2 mph
S 2 mph
000
FXUS61 KBOX 261657
AFDBOX
Area Forecast Discussion
National Weather Service Boston/Norton MA
1257 PM EDT Fri Jun 26 2026
.WHAT HAS CHANGED...
No major changes to the forecast.
&&
.KEY MESSAGES...
- Showers this morning dissipate heading into midday, then isolated
thunderstorms possible in the afternoon/evening hours.
- Showers Saturday followed by a warming and drying trend that
carries into next week.
- Warm and humid midweek, along with a risk of showers towards
the second half of next week.
&&
.DISCUSSION...
KEY MESSAGE 1...Dry weather for much of today before the risk for
scattered showers and a few thunderstorms returns tonight into
Friday.
Showers are crossing southern New England this morning as a warm
front lifted north into southern NH and VT. There has not been much
in the way of lightning flashes with these showers this morning,
though some areas could see some locally heavy rainfall. Winds have
shifted more southerly as a result of the warm front and dewpoints
will continue to climb into the 60s heading through today. As a
result, it may feel more humid outside today outside of
showers/storms. The main concern remains focused on the possible
storms this afternoon/evening.
A stronger surface low secondary to the primary one shifting into
Quebec will have its cold front approach southern New England today.
Guidance has continued to favor strong effective bulk shear between
40-50 kt through this afternoon. For instability, generally around
1000-1500 J/kg of MLCAPE is favored among the CAMs for this
afternoon (MUCAPE reaches ~2000 J/kg in some spots over central and
western MA). This shear and marginal instability combined with the
forcing that will come with the aforementioned low's cold front
could aid in the development of isolated storms. CAMs have somewhat
favoring central into eastern MA more regarding some storms
developing, but exact areas cannot be nailed down as these are
likely to be very scattered in coverage. The risk for them turning
severe has trended down slightly over the latest updates, with the
majority of the region now no longer under a Marginal (1/5) risk.
However, given the strong wind field aloft, some storms developing
damaging winds gusts cannot be completely ruled out.
KEY MESSAGE 2...Showers Saturday followed by a warming and drying
trend that carries into next week.
Low pressure moving along a cold front is expected to track to our
south Saturday. However, guidance continues to show some
discrepancies regarding how far north any showers may reach. Some
showers associated with this wave are more likely to scrape along
the south coast into the Cape and Islands, but they are not expected
to be very significant at this time. 00z NAM guidance pulled back
and trended showers well south of the region, though Canadian and
ECMWF guidance still indicates some showers reaching well into RI
and CT to I-90. NAEFS guidance has also trended more anomalous PWATs
north to the south coast along with ample midlevel moisture. Aside
from these showers, though, dry weather is expected to return
heading into the start of next week as high pressure associated with
an amplified upper level ridge moves into southern New England. A
warming trend also kicks off for the start of the work week,
continuing into midweek. However, details on just how warm it may
get are still uncertain at this time. The outlook for hazardous
temperatures next week has shifted more of a slight (20-40 percent)
to moderate (40-60 percent) for southern New England, which will be
something we continue to monitor.
KEY MESSAGE 3...Warm and humid midweek, along with a risk of showers
towards the second half of next week.
As noted in the previous message, the risk for hazardous
temperatures over southern New England has trended up a bit for
midweek next week. Humidity ticks up as a warm and more humid
airmass moves in. A shortwave or two may "roll" along the eastern
side of the upper level ridge, which may bring some unsettled
weather for midweek. Location-specific and refined timing details
are not yet known, though latest guidance is pointing towards
sometime between Wednesday and Thursday.
&&
.AVIATION /18Z FRIDAY THROUGH WEDNESDAY/...
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
Through This Afternoon...Moderate confidence.
The risk for isolated thunderstorms, some of which may turn
severe, returns in the afternoon primarily after 21z. PROB30s
were included at most terminals to account for this risk.
Highest probs E of ORH. Periods of MVFR visibilities and
ceilings possible with any afternoon showers and storms.
Uncertainty remains in exact location/overall coverage.
Tonight...Moderate confidence.
Showers and storms should clear the region by midnight. Patchy
fog leading to areas of MVFR/IFR may develop overnight across
much of SE MA, Cape Cod, and the Islands. Low stratus also a
possibility, particularly towards the Cape and Islands. Winds
shift more W and go light to calm overnight.
Saturday...Moderate confidence.
Mostly lower end VFR with areas of MVFR. Showers mostly scraping
along the south coast are favored; lower confidence in those
going much further north than that. These may also approach
later in the day than expected. Light winds, with a sea breeze
developing by 14z.
KBOS Terminal...High confidence in TAF.
KBDL Terminal...High confidence in TAF.
Outlook /Saturday Night through Wednesday/...
Saturday Night through Monday Night: VFR.
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 Saturday...High confidence.
Southerly winds continue into this morning and shift more SW
tonight, then S to SE for Saturday. Occasional gusts to 20 kt
over the waters this afternoon are not out of the question, then
these should diminish tonight and remain low tomorrow. Seas
should remain 2 to 3 ft. Showers and thunderstorms impact the
waters today and possibly into early tonight. Showers associated
with another low passing to our south will likely impact the
southern waters Saturday.
Outlook /Saturday Night through Wednesday/...
Saturday Night: Winds less than 25 kt. Chance of rain showers.
Sunday: Winds less than 25 kt. Seas locally approaching 5 ft.
Sunday Night through Monday Night: Winds less than 25 kt.
Tuesday: Winds less than 25 kt. Slight chance of rain showers.
&&
.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...None.
&&
$$
DISCUSSION...Hrencecin
AVIATION...FT
MARINE...Hrencecin
Radar images courtesy Weather Underground / Intellicast.
UV Index forecast high for today: 4 Medium
Current (Measured): 0.0 None
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
Thursday:
0.01 in
June:
1.26 in
2026
1:17pm
36.1°F
High today:
12:00am
25.2°F
Low today:
2:28pm
30.4°F
High Thursday:
7:11am
16.2°F
Low Thursday:
12:00am
25.2°F
Low wind chill today:
7:11am
16.2°F
Low wind chill Thursday:
1:17pm
33.3°F
High dew pt today:
11:56pm
20.7°F
High dew pt Thursday:
None
Wind gust today:
None
Wind gust Thursday:
No alerts/warnings active for Southeast Middlesex County.
First Light:
6:11am
Sunrise:
6:39am
Sunset:
5:19pm
Twilight ends:
5:47pm
Daylight length:
10 hours 39 minutes
Phase:
Waxing Gibbous (82%)
Moon set:
8:18am
Moon rise:
9:38pm