Lexington, Massachusetts, USA
35.1°F
1.7°C
Cold
Few Clouds
This Afternoon: Hi 30 °F
Tonight: Lo 11 °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 Monday: 0.00 in
Visibility: 10 miles
Wind:
Now: Calm
Avg: Calm
Gusts: 0 mph
For Lexington, 2" expected.
Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Tue Feb 24, 2026 2:28pm EST
Mostly Sunny
Hi 30 °F
Mostly sunny, with a high near 30. West wind around 9 mph.
Mostly Clear
Lo 11 °F
Mostly clear, with a low around 11. Southwest wind 3 to 7 mph.
Snow
Hi 39 °F
Snow before 1pm, then a slight chance of rain between 1pm and 2pm. Mostly cloudy, with a high near 39. South wind 5 to 10 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Partly Cloudy
Lo 27 °F
Partly cloudy, with a low around 27. Southwest wind around 6 mph.
Mostly Sunny
Hi 37 °F
Mostly sunny, with a high near 37. West wind around 8 mph.
Chance Light Snow
Lo 18 °F
A chance of snow. Partly cloudy, with a low around 18. West wind around 5 mph. Chance of precipitation is 30%. New snow accumulation of less than one inch possible.
Slight Chance Light Snow then Mostly Sunny
Hi 37 °F
A slight chance of snow before 9am. Mostly sunny, with a high near 37. West wind around 6 mph.
Partly Cloudy
Lo 24 °F
Partly cloudy, with a low around 24. South wind around 6 mph.
Mostly Sunny
Hi 45 °F
Mostly sunny, with a high near 45. Southwest wind 6 to 9 mph.
Partly Cloudy
Lo 28 °F
Partly cloudy, with a low around 28. West wind around 7 mph.
Partly Sunny
Hi 39 °F
Partly sunny, with a high near 39. Northwest wind around 8 mph.
Partly Cloudy
Lo 14 °F
Partly cloudy, with a low around 14. Northwest wind around 7 mph.
Chance Light Snow
Hi 25 °F
A chance of snow after 7am. Mostly sunny, with a high near 25. North wind around 7 mph. Chance of precipitation is 30%.
Chance Light Snow
Lo 13 °F
A chance of snow. Mostly cloudy, with a low around 13. Northeast wind around 6 mph.
Issued by:
National Weather Service Boston / Norton, MA
Updated Tue Feb 24, 2026 2:28pm EST

W 8 mph
W 7 mph
W 7 mph
W 6 mph
W 6 mph
W 6 mph
W 6 mph
W 6 mph
SW 5 mph
SW 5 mph
SW 3 mph
SW 3 mph
S 3 mph
S 5 mph
S 5 mph
SE 5 mph
S 6 mph
S 7 mph
S 8 mph
S 9 mph
SW 9 mph
SW 10 mph
SW 9 mph
SW 9 mph
SW 8 mph
SW 7 mph
SW 6 mph
SW 6 mph
SW 6 mph
SW 6 mph
SW 6 mph
SW 6 mph
W 6 mph
W 6 mph
W 6 mph
W 6 mph
000
FXUS61 KBOX 241928
AFDBOX
Area Forecast Discussion
National Weather Service Boston/Norton MA
228 PM EST Tue Feb 24 2026
.WHAT HAS CHANGED...
A quick burst of snow may impact parts of the morning commute
Wednesday. Latest guidance has trended the system
Thursday/Friday further south and away from the region, but we
will continue to monitor this.
&&
.KEY MESSAGES...
- A quick burst of snow very late tonight and Wednesday morning
will bring 1-3 inches accumulation, then turning milder in the
afternoon.
- Weaker coastal low pressure may bring some unsettled weather
sometime late Thursday into Friday, but has been trending
south away from the region.
- Drier for the weekend before the risk for more unsettled
weather returns to start the week
&&
.DISCUSSION...
Key Message 1...A quick burst of snow very late tonight and
Wednesday morning will 1-3 inches accumulation, then turning
milder in the afternoon.
Brief shortwave ridging this evening will bring a period of
mostly clear skies with some cirrus which will allow for decent
radiational cooling during the first half of the night. Temps
expected to drop into the single numbers and teens before rising
late tonight as southerly winds develop and clouds thicken
ahead of next system. A mid level shortwave moves eastward from
the Gt Lakes late tonight into Wed as a warm front approaches
from the SW. Decent shot of warm advection/isentropic lift
develops which will be enhanced at the nose of a 40 kt low level
jet. This will result in snow developing from west to east late
tonight and Wed morning. This will be a minor QPF event with
snowfall averaging 1-3 inches but much of it could fall in a 3
hour period.
While the higher amounts are favored over the higher elevations, it
is possible there could be a secondary max just inland from the
south coast across RI and SE MA. Interesting set-up with low level
jet overriding an antecedent cold airmass. Given the low level cold
air initially in place, the stronger southerly winds may take a bit
longer to mix down to the surface near the coast which would be
enough for a quick burst of snow with brief 1"/hr rates possible as
suggested by the HREF. This would be from the enhanced forcing for
ascent at the nose of the LLJ. If the southerly winds were quicker
to mix to the surface, this would diminish the risk for this brief
burst of snow near the south coast. Eventually the south winds will
increase and temps will rise above freezing with snow probably
ending as some rain near the coast. This is a quick moving system
and snow will be ending from W to E around midday or early afternoon
but the core of the event will probably be in a 3 hr period. The
snow is expected to develop from 5-8 AM from W to E so it will
impact parts of the morning commute, especially western New Eng
where the snow begins earlier. After the snow ends, temps will rise
through the 30s with highs upper 30s, except holding in the low-mid
30s higher elevations. Gusty S-SW winds will develop near the coast
Wed morning with gusts to 25-30 mph as the low level jet moves
across the region.
Key Message 2...Weaker coastal low pressure may bring some
unsettled weather sometime late Thursday into Friday, but has
been trending south away from the region.
Another coastal low exiting offshore of the Carolina coast may pass
south of the region some time late Thursday into Friday. The latest
guidance has trended the system further south and away from the
region, but a grazing pass along the south coast and Islands is not
out of the question just yet. Ensemble probs have trended down for
measurable snow Friday morning, ranging between 20-40% over the
south coast across the ensemble suites. The GEFS and ECMWF ENS are
the more bullish ensembles on this, with the GEPS only hinting at an
area around the Cape with 30% probs for measurable snow Friday
morning. Will need to continue to monitor, but the latest trends are
favoring lesser impacts if any at all with this system.
Key Message 3...Drier for the weekend before the risk for more
unsettled weather returns to start the week
High pressure builds in briefly before going offshore as the day
goes on Saturday and a front moves through the region over the
weekend, which will end the brief period of possible warmer
temperatures Saturday. Temperatures at 925 mb and 850 mb get just
above 0C for Saturday afternoon in the midst of more southwesterly
flow, which may support high temperatures climbing well into the
40s. A front moves through sometime in the second half of the
weekend, injecting another cold shot of air into the region to start
the week. Some unsettled weather could return for the start of the
week which we will continue to monitor.
&&
.AVIATION /19Z TUESDAY THROUGH SUNDAY/...
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
Tonight and Wednesday...Moderate confidence.
VFR through much of tonight, then snow overspreads the region
from W to E from 10-13z with lowering conditions to MVFR-IFR.
Snow likely mixing with or changing to rain along immediate
south coast and especially Cape/Islands. Snow ends by 18z with
improving vsbys but MVFR cigs persist. Increasing S-SW winds
develop Wed morning with gusts to 25 kt, up to 30 kt on the
Cape/Islands where area of LLWS expected as low level jet moves
across the region. Winds and LLWS diminish late Wed as the LLJ
moves to the east.
Wednesday night...Moderate confidence.
Areas of MVFR improving to VFR. SW-W wind 5-15 kt, some higher
gusts early on the Cape/Islands.
KBOS Terminal...High confidence in TAF.
KBDL Terminal...High confidence in TAF.
Outlook /Thursday through Sunday/...
Thursday: VFR. Breezy. Slight chance SN.
Thursday Night through Friday: VFR. Slight chance SN.
Friday Night: VFR.
Saturday: VFR. Breezy.
Saturday Night through Sunday: VFR.
&&
.MARINE...
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
Small Craft Advisories have been issued for all waters late tonight
into Wed for a period of SW gusts to 25-30 kt as a low level jet
moves across the waters. Winds will diminish Wed evening but 5-8 ft
seas will linger over southern waters through Wed night. Vsbys lower
late tonight into Wed morning in a period of snow and rain.
Outlook /Thursday through Sunday/...
Thursday: Winds less than 25 kt. Local rough seas. Slight
chance of snow.
Thursday Night: Winds less than 25 kt. Areas of seas
approaching 5 ft. Chance of snow.
Friday: Winds less than 25 kt. Areas of seas approaching 5 ft.
Slight chance of rain, slight chance of snow.
Friday Night: Winds less than 25 kt. Seas locally approaching
5 ft.
Saturday through Sunday: Winds less than 25 kt.
&&
.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory from 7 AM to 4 PM EST Wednesday for
ANZ230.
Small Craft Advisory from 7 AM to 7 PM EST Wednesday for
ANZ231-236-251.
Small Craft Advisory from 4 AM to 10 PM EST Wednesday for
ANZ232>235-237.
Small Craft Advisory from 7 AM to 10 PM EST Wednesday for
ANZ250.
Small Craft Advisory from 4 AM Wednesday to 7 AM EST Thursday
for ANZ254>256.
&&
$$
DISCUSSION...KJC/Hrencecin
AVIATION...KJC
MARINE...KJC
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
Monday:
0.01 in
February:
1.26 in
2026
1:17pm
36.1°F
High today:
12:00am
25.2°F
Low today:
2:28pm
30.4°F
High Monday:
7:11am
16.2°F
Low Monday:
12:00am
25.2°F
Low wind chill today:
7:11am
16.2°F
Low wind chill Monday:
1:17pm
33.3°F
High dew pt today:
11:56pm
20.7°F
High dew pt Monday:
None
Wind gust today:
None
Wind gust Monday:
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:
First Quarter (82%)
Moon set:
8:18am
Moon rise:
9:38pm