Lexington, Massachusetts, USA
35.1°F
1.7°C
Cold
Clear
This Afternoon: Hi 38 °F
Tonight: Lo 22 °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 Tuesday: 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 Wed Mar 18, 2026 1:22pm EDT
Partly Sunny
Hi 38 °F
Partly sunny, with a high near 38. Northwest wind around 5 mph.
Partly Cloudy
Lo 22 °F
Partly cloudy, with a low around 22. South wind 2 to 6 mph.
Mostly Sunny
Hi 44 °F
Mostly sunny, with a high near 44. South wind 2 to 7 mph.
Partly Cloudy
Lo 31 °F
Partly cloudy, with a low around 31. Southwest wind around 6 mph.
Mostly Sunny
Hi 53 °F
Mostly sunny, with a high near 53. Southwest wind around 7 mph.
Light Rain Likely
Lo 39 °F
Rain likely after 8pm. Mostly cloudy, with a low around 39. South wind around 7 mph. Chance of precipitation is 70%.
Light Rain Likely
Hi 53 °F
Rain likely before 2pm. Mostly cloudy, with a high near 53. Southwest wind 7 to 10 mph. Chance of precipitation is 60%.
Mostly Cloudy then Slight Chance Light Rain
Lo 39 °F
A slight chance of rain after 4am. Mostly cloudy, with a low around 39. Southwest wind around 8 mph.
Chance Light Rain
Hi 57 °F
A chance of rain. Mostly cloudy, with a high near 57. West wind 7 to 12 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.
Chance Light Rain then Slight Chance Light Snow
Lo 32 °F
A chance of rain before 4am, then a slight chance of snow. Partly cloudy, with a low around 32. Northwest wind around 10 mph. Chance of precipitation is 30%.
Slight Chance Light Snow then Mostly Sunny
Hi 41 °F
A slight chance of snow before 7am. Mostly sunny, with a high near 41. North wind around 12 mph, with gusts as high as 22 mph.
Mostly Clear
Lo 26 °F
Mostly clear, with a low around 26. North wind 6 to 9 mph.
Partly Sunny
Hi 41 °F
Partly sunny, with a high near 41. West wind 6 to 10 mph.
Mostly Cloudy
Lo 28 °F
Mostly cloudy, with a low around 28. Southwest wind around 9 mph.
Issued by:
National Weather Service Boston / Norton, MA
Updated Wed Mar 18, 2026 1:22pm EDT

NW 3 mph
W 3 mph
S 5 mph
S 5 mph
S 5 mph
SE 6 mph
SE 6 mph
S 6 mph
S 6 mph
S 5 mph
S 5 mph
S 3 mph
S 3 mph
S 2 mph
S 2 mph
S 2 mph
S 2 mph
S 2 mph
S 2 mph
S 3 mph
S 5 mph
S 6 mph
S 6 mph
S 6 mph
S 7 mph
S 7 mph
S 7 mph
S 7 mph
S 6 mph
S 6 mph
S 6 mph
S 6 mph
S 6 mph
S 6 mph
S 6 mph
SW 6 mph
000
FXUS61 KBOX 181728
AFDBOX
Area Forecast Discussion
National Weather Service Boston/Norton MA
128 PM EDT Wed Mar 18 2026
.WHAT HAS CHANGED...
Flood Warning canceled for the Taunton River at Bridgewater, MA.
Otherwise no significant changes.
&&
.KEY MESSAGES...
- River and streams recede through Friday with dry weather and
slowly moderating temperatures.
- Milder with scattered showers at times this weekend.
&&
.DISCUSSION...
KEY MESSAGE 1...River and streams recede through Friday with dry
weather and slowly moderating temperatures.
Latest forecast shows the Taunton River at Bridgewater cresting just
below its 8 foot flood stage through tonight, so the Flood Warning
has been canceled. Along the mainstem Connecticut River, we expect
to see slow rises with crests below flood stage Thursday or Friday.
Otherwise, high pressure will remain in control of our weather
through Friday as it slowly heads offshore. This stretch of dry
weather will allow river and stream levels to recede slowly for the
next few days.
Despite high clouds tonight, very dry airmass in place along with
light winds should allow for another cold night. The usual cold
spots, including river valleys and even parts of the upper Cape and
interior of Martha's Vineyard should see lows in teens tonight with
20s elsewhere.
This latest shot of cold air will gradually retreat, with highs
getting back into the 40s Thursday and into the 50s Friday thanks to
S/SW flow. We should see sea breezes both days as the pressure
gradient remains weak, so coastal areas will remain a bit cooler
since water temperatures are still in the upper 30s to lower 40s.
KEY MESSAGE 2...Mild with scattered showers at times this weekend.
Zonal flow aloft this weekend gives way to broad trough developing
over Northeast early next week as upper ridging builds over western
third of country. This will bring a series of weak short waves
through New England over weekend with two rounds of scattered
showers, first being later Friday night into Saturday and the second
in the Sunday-Monday timeframe. Not seeing any signals for heavy
rainfall at this point and ensemble probabilities only have low
chances (20-30%) of seeing more than 0.50".
Certainly looks mild over weekend with highs in 50s both days,
perhaps a few locations touch 60 Sunday, then temperatures
return closer to normal early next week with highs in 40s. Some
of the guidance shows potential for some wet snow at tail end
Sunday night as colder air arrives but even if it does occur it
does not look to be impactful.
&&
.AVIATION /18Z WEDNESDAY THROUGH MONDAY/...
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
18z TAF Update: High confidence.
VFR. Light N winds give way to onshore winds along coast, before
southerly winds prevail tonight and Thursday, with another round of
sea breezes along coast.
KBOS Terminal...High confidence in TAF.
KBDL Terminal...High confidence in TAF.
Outlook /Friday through Monday/...
Friday: VFR.
Friday Night: MVFR/IFR conditions possible. Breezy. RA likely.
Saturday: Mainly VFR, with local IFR possible. Breezy. Chance
RA.
Saturday Night: Mainly VFR, with local MVFR possible. Breezy.
Slight chance RA.
Sunday: Mainly VFR, with local MVFR possible. Breezy. Chance
RA.
Sunday Night: VFR. Breezy. Chance RA, slight chance SN.
Monday: VFR. Breezy.
&&
.MARINE...
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
High confidence through the end of the week.
SCAs remain posted on outer waters for slowly diminishing seas,
which should fall below 5 ft offshore Thursday morning.
Otherwise high pressure remains in control of our weather
through the end of the week with light S/SW winds and local sea
breezes near shore.
Outlook /Friday through Monday/...
Friday: Winds less than 25 kt. Seas locally approaching 5 ft.
Friday Night: Winds less than 25 kt. Areas of seas approaching
5 ft. Chance of rain.
Saturday: Winds less than 25 kt. Seas up to 5 ft. Chance of
rain.
Saturday Night: Winds less than 25 kt. Seas up to 5 ft.
Sunday: Winds less than 25 kt. Seas up to 5 ft. Chance of rain.
Sunday Night: Low risk for Small Craft Advisory winds with
gusts up to 25 kt. Seas up to 5 ft. Chance of rain.
Monday: Low risk for Small Craft Advisory winds with gusts up
to 25 kt. Areas of rough seas.
&&
.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory until 8 PM EDT this evening for ANZ235-
237.
Small Craft Advisory until 2 PM EDT Thursday for ANZ250-
254>256.
&&
$$
DISCUSSION...JWD
AVIATION...JWD
MARINE...JWD
Radar images courtesy Weather Underground / Intellicast.
UV Index forecast high for today: 3 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
Tuesday:
0.01 in
March:
1.26 in
2026
1:17pm
36.1°F
High today:
12:00am
25.2°F
Low today:
2:28pm
30.4°F
High Tuesday:
7:11am
16.2°F
Low Tuesday:
12:00am
25.2°F
Low wind chill today:
7:11am
16.2°F
Low wind chill Tuesday:
1:17pm
33.3°F
High dew pt today:
11:56pm
20.7°F
High dew pt Tuesday:
None
Wind gust today:
None
Wind gust Tuesday:
No alerts/warnings active for Southeast Middlesex County.
No snow expected in Lexington.
First Light:
6:11am
Sunrise:
6:39am
Sunset:
5:19pm
Twilight ends:
5:47pm
Daylight length:
10 hours 39 minutes
Phase:
New Moon (82%)
Moon set:
8:18am
Moon rise:
9:38pm