Old Res Weather
Lexington, Massachusetts, USA
- Overcast
-
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
Overcast
This Afternoon: Hi 46 °F
Tonight: Lo 43 °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
Forecast [‒] Forecast [+]
NWS Weather Forecast -
This Afternoon,
Tonight,
&
Sunday
through
Friday Night
Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Sat Mar 7, 2026 3:12pm EST
This Afternoon:
Patchy Drizzle
Hi 46 °F
Patchy drizzle. Cloudy, with a high near 46. Southwest wind around 10 mph, with gusts as high as 21 mph.
Tonight:
Patchy Drizzle then Patchy Fog
Lo 43 °F
Patchy drizzle before 8pm, then patchy drizzle and patchy fog between 8pm and midnight, then patchy fog and a slight chance of rain between midnight and 3am, then a chance of rain and patchy fog between 3am and 4am, then patchy fog and a slight chance of rain. Cloudy. Low around 43, with temperatures rising to around 49 overnight. Southwest wind around 12 mph. Chance of precipitation is 30%.
Sunday:
Chance Light Rain then Mostly Cloudy
Hi 56 °F
A chance of rain and patchy fog before 8am, then patchy fog and a slight chance of rain between 8am and 11am, then patchy drizzle and patchy fog between 11am and noon. Mostly cloudy, with a high near 56. West wind around 9 mph. Chance of precipitation is 30%.
Sunday Night:
Mostly Clear
Lo 37 °F
Mostly clear, with a low around 37. West wind around 7 mph.
Monday:
Mostly Sunny
Hi 60 °F
Mostly sunny, with a high near 60. Southwest wind 6 to 10 mph, with gusts as high as 21 mph.
Monday Night:
Clear
Lo 39 °F
Clear, with a low around 39. Southwest wind 6 to 9 mph.
Tuesday:
Sunny
Hi 66 °F
Sunny, with a high near 66. Southwest wind around 7 mph.
Tuesday Night:
Partly Cloudy
Lo 41 °F
Partly cloudy, with a low around 41. South wind around 7 mph.
Wednesday:
Chance Light Rain
Hi 57 °F
A chance of rain after 8am. Mostly cloudy, with a high near 57. South wind 6 to 10 mph. Chance of precipitation is 30%.
Wednesday Night:
Chance Light Rain
Lo 44 °F
A chance of rain. Cloudy, with a low around 44. South wind 9 to 14 mph. Chance of precipitation is 40%.
Thursday:
Light Rain Likely
Hi 59 °F
Rain likely. Cloudy, with a high near 59. Southwest wind around 16 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.
Thursday Night:
Slight Chance Light Snow
Lo 28 °F
A chance of rain before 11pm, then a slight chance of snow between 11pm and 2am. Partly cloudy, with a low around 28. West wind 9 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 50%. New snow accumulation of less than half an inch possible.
Friday:
Partly Sunny
Hi 47 °F
Partly sunny, with a high near 47. West wind around 10 mph.
Friday Night:
Chance Light Snow then Chance Light Rain
Lo 37 °F
A chance of snow between 8pm and 11pm, then a chance of rain. Mostly cloudy, with a low around 37. Southwest wind around 10 mph.
NWS Hourly Forecast -
Today 4pm through Mon 4am
Issued by:
National Weather Service Boston / Norton, MA
Updated Sat Mar 7, 2026 3:12pm EST
4:00pm
Dew Pt 38°F
Wind Chill: 37°F
SW 10 mphPrecip: 2%
5:00pm
Dew Pt 38°F
Wind Chill: 37°F
SW 10 mphPrecip: 2%
6:00pm
Dew Pt 38°F
Wind Chill: 37°F
SW 10 mphPrecip: 2%
7:00pm
Dew Pt 40°F
Wind Chill: 39°F
SW 12 mphPrecip: 3%
8:00pm
Dew Pt 40°F
Wind Chill: 37°F
SW 10 mphPrecip: 3%
9:00pm
Dew Pt 42°F
Wind Chill: 40°F
SW 10 mphPrecip: 4%
10:00pm
Dew Pt 43°F
Wind Chill: 40°F
SW 10 mphPrecip: 5%
11:00pm
Dew Pt 43°F
Wind Chill: 41°F
SW 10 mphPrecip: 9%
12:00am
Dew Pt 44°F
Wind Chill: 42°F
SW 10 mphPrecip: 17%
1:00am
Dew Pt 45°F
Wind Chill: 42°F
SW 10 mphPrecip: 21%
3:00am
Dew Pt 46°F
Wind Chill: 43°F
SW 10 mphPrecip: 25%
4:00am
Dew Pt 45°F
Wind Chill: 43°F
SW 10 mphPrecip: 22%
5:00am
Dew Pt 47°F
Wind Chill: 45°F
SW 10 mphPrecip: 19%
6:00am
Dew Pt 46°F
Wind Chill: 45°F
SW 9 mphPrecip: 25%
7:00am
Dew Pt 46°F
Wind Chill: 45°F
SW 9 mphPrecip: 30%
8:00am
Dew Pt 47°F
Wind Chill: 46°F
SW 8 mphPrecip: 23%
9:00am
Dew Pt 47°F
Wind Chill: 46°F
SW 8 mphPrecip: 15%
10:00am
Dew Pt 48°F
SW 8 mphPrecip: 15%
11:00am
Dew Pt 49°F
W 8 mphPrecip: 10%
12:00pm
Dew Pt 48°F
W 9 mphPrecip: 6%
1:00pm
Dew Pt 46°F
W 9 mphPrecip: 3%
2:00pm
Dew Pt 44°F
W 9 mphPrecip: 2%
3:00pm
Dew Pt 43°F
W 9 mphPrecip: 2%
4:00pm
Dew Pt 41°F
W 8 mphPrecip: 2%
5:00pm
Dew Pt 40°F
W 7 mphPrecip: 1%
6:00pm
Dew Pt 38°F
Wind Chill: 47°F
W 6 mphPrecip: 1%
7:00pm
Dew Pt 37°F
Wind Chill: 44°F
W 6 mphPrecip: 0%
8:00pm
Dew Pt 36°F
Wind Chill: 42°F
W 6 mphPrecip: 0%
9:00pm
Dew Pt 36°F
Wind Chill: 41°F
W 6 mphPrecip: 0%
10:00pm
Dew Pt 36°F
Wind Chill: 39°F
W 6 mphPrecip: 0%
11:00pm
Dew Pt 35°F
Wind Chill: 38°F
SW 6 mphPrecip: 0%
12:00am
Dew Pt 35°F
Wind Chill: 38°F
SW 7 mphPrecip: 0%
1:00am
Dew Pt 34°F
Wind Chill: 36°F
W 7 mphPrecip: 0%
2:00am
Dew Pt 34°F
Wind Chill: 37°F
W 6 mphPrecip: 0%
3:00am
Dew Pt 34°F
Wind Chill: 36°F
W 6 mphPrecip: 0%
4:00am
Dew Pt 33°F
Wind Chill: 35°F
SW 6 mphPrecip: 0%
FORECAST DISCUSSION
Area Forecast Discussion
for Boston / Norton, MA
000
FXUS61 KBOX 071903
AFDBOX
Area Forecast Discussion
National Weather Service Boston/Norton MA
203 PM EST Sat Mar 7 2026
.WHAT HAS CHANGED...
No significant changes. Becoming more confident in springtime
warmth, especially Tuesday, along with the potential for minor
river flooding within the next 7 days.
&&
.KEY MESSAGES...
- A brief round of showers, and perhaps a rumble of thunder,
late tonight into very early Sunday morning.
- Above normal temperatures next week. Trending more unsettled
mid to late week with a round or two of precipitation
possible.
- Expecting significant snowmelt over the coming week. Minor
river flooding possible.
&&
.DISCUSSION...
KEY MESSAGE 1...A brief round of showers, and perhaps a rumble
of thunder, late tonight into very early Sunday morning.
Southern New England remains on the cool side of a warm front
tonight, until a cold front passes by late Sunday. This gives
our region a brief period of time within the warm sector of a
low pressure moving east across northern New England Sunday.
Areas of fog and patchy drizzle finally ended for a time this
afternoon, but are likely to return later tonight. With dew
points expected to remain above freezing through Sunday, we're
looking at continued snow melt during this time.
Expecting a round of rainfall ahead of a pair of fronts starting
late this evening before winding down from west to east during
the day Sunday. It could be late afternoon before this rainfall
finally clears the Cape and islands. While it's not impossible
for there to be a few rumbles of thunder given the observed
convection farther to our west, thinking the time of day and
year does not favor thunderstorms across southern New England
and left them out of this forecast.
KEY MESSAGE 2...Above normal temperatures next week. Trending
more unsettled mid to late week with a round or two of
precipitation possible. Minor river flooding possible.
A thermal ridge is expected to build in further from the south
next week bringing light S/SW winds. In response, 850mb
temperatures rise to 10-15C through the week, supporting above
normal temperatures. Highs will likely rise into the upper 50s
and 60s Monday through Thursday for many spots. Tuesday will
likely be the warmest day with highs in the 60s with a some
interior/valley areas potentially approaching 70. This runs
round 20-25 degrees above normal. Immediate coastal areas will
run a bit cooler, especially along the immediate south coast
and the Cape and Islands given the onshore southerly component
flow. Those mentioned areas will more likely stay in the 40s and
50s. Some guidance continues to hint at the potential for a
backdoor front later Wednesday which could bring down
temperatures, at least in northeast MA. Highs will depend on
how far south this front extends.
The pattern trends more unsettled Wednesday onward with the
passage of a few shortwave troughs bringing a few rounds of
precipitation through late week. There is still uncertainty in
the timing/coverage of showers on Wednesday. Thursday's wave
will be more organized with a stronger cold front accompanying
it. This will support more widespread precipitation later
Thursday, likely rain to start, with potential snow mixing in
for the higher terrain as the front works through.
KEY MESSAGE 3...Expecting significant snowmelt over the coming
week. Minor river flooding possible.
The extended period of warmer conditions does raise concern for
rises in rivers/streams from the quicker melting of snowpack.
Ensemble guidance indicates rising river/stream levels through
the week. Ensembles show some locations, particularly on the CT
and Merrimack Rivers, reaching at least action stage, if not
minor flood stage within the next week. By late next week,
ensemble guidance indicates 40-60% probabilities for CT river
locations to exceed minor flood stage and low probabilities (<
15%) for moderate flood stage.
For some rivers across RI and eastern MA (e.g. Taunton River at
Bridgewater), snowmelt could lead to potential minor flooding as
early as Monday or Tuesday. We will also need to watch some of
the smaller rivers, such as the Pawcatuck River at Westerly, the
Assabet River at Maynard and the Shawsheen River at Wilmington
for possible flooding later next week.
&&
.AVIATION /18Z SATURDAY THROUGH THURSDAY/...
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
Through Tonight...Moderate confidence.
IFR/LIFR conditions dominate through tonight. SSW surface winds
8-15 knots with some 20+ knot gusts through the afternoon and
evening. Cigs/vsbys improve very slightly to IFR levels in some
locations away from the south coast this afternoon and evening.
However...LIFR conditions will be favored near the south coast
where advection fog, dense at times, will impact areas near the
south coast, Cape and Islands.
A band of of showers will approach western MA/CT after 03z/04z
tonight and may reach the coastal plain 06z/07z. While the
showers will be undergoing a weakening trend...they still may
survive in some form and reach the coast. Perhaps even an
isolated rumble of thunder. S-SW winds will gust between 15 and
25 knots. We also will have LLWS in the TAFS given an 850 mb
southwest LLJ on the order of 55-70 knots.
Sunday...High confidence in trends with moderate confidence in
timing.
Gradual improvement will occur on Sunday with many locations
eventually improving to VFR by mid afternoon...except for areas
near the south coast, Cape & Islands where low clouds and fog
may persist. SW winds should shift to the W at 10 to 15 knots.
Sunday Night...High confidence.
VFR with light WSW winds.
KBOS Terminal...Moderate confidence in TAF.
Moderate confidence in overnight visby's. Wind speed performance
has been below model guidance today, so if gusts don't kick in
this evening then visby's will likely drop rapidly after sunset.
KBDL Terminal...High confidence in TAF.
Outlook /Monday through Thursday/...
Monday: VFR. Breezy.
Monday Night through Tuesday: VFR.
Tuesday Night:
Wednesday: Breezy. Chance RA.
Wednesday Night: Windy with local gusts up to 30 kt. Chance RA.
Thursday: Windy with gusts up to 30 kt. Chance RA, SN likely.
&&
.MARINE...
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
Today through Sunday Night...High confidence.
Lingering rough seas across the outer waters through this
weekend. In addition, a period of southwest wind gusts of 20 to
30 knots tonight into Sunday morning for most of our waters.
Therefore, Small Craft Advisories continue for most souther New
England Waters.
Lastly, areas of fog and poor visibility will be an issue for
mariners this entire weekend, especially near the south coast.
Outlook /Monday through Thursday/...
Monday through Monday Night: Winds less than 25 kt. Areas of
seas approaching 5 ft.
Tuesday through Tuesday Night: Winds less than 25 kt.
Wednesday: Winds less than 25 kt. Seas locally approaching
5 ft. Slight chance of rain.
Wednesday Night: Strong winds with gusts up to 30 kt. Seas up
to 5 ft. Chance of rain.
Thursday: Strong winds with gusts up to 35 kt. Rough seas up to
11 ft. Chance of rain.
&&
.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory from 6 PM this evening to 10 AM EST
Sunday for ANZ231-234.
Small Craft Advisory from 6 PM this evening to 7 PM EST Sunday
for ANZ232-233.
Small Craft Advisory from 6 PM this evening to 1 AM EST Monday
for ANZ235-237.
Small Craft Advisory until 10 PM EST Sunday for ANZ250.
Small Craft Advisory until 1 PM EST Sunday for ANZ251.
Small Craft Advisory until 7 AM EST Monday for ANZ254>256.
&&
$$
DISCUSSION...Belk/McMinn/Mensch
AVIATION...McMinn/Mensch
MARINE...Belk/Mensch
Radar [‒] Radar [+]
Radar images courtesy Weather Underground / Intellicast.
Satellite [‒] Satellite [+]
Satellite images courtesy Weather Underground / Intellicast.
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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
March:
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:
Alerts / Advisories [‒] Alerts / Advisories [+]
No alerts/warnings active for Southeast Middlesex County.
Expected Snow [‒] Expected Snow [+]
72-Hour Snowfall Forecast
No snow expected in Lexington.
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 Gibbous (82%)
Moon set:
8:18am
Moon rise:
9:38pm