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
Tonight: Lo 45 °F
Sunday: Hi 55 °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 -
Tonight,
Sunday,
&
Sunday Night
through
Saturday
Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Sat Apr 18, 2026 6:31pm EDT
Tonight:
Patchy Fog then Patchy Drizzle
Lo 45 °F
Patchy fog between 9pm and 2am, then patchy drizzle and patchy fog between 2am and 5am, then patchy drizzle and patchy fog and a slight chance of rain showers. Cloudy, with a low around 45. East wind 2 to 6 mph. Chance of precipitation is 20%.
Sunday:
Patchy Fog
Hi 55 °F
Patchy fog and a slight chance of rain showers before 8am, then rain showers and patchy fog between 8am and 1pm, then patchy fog and showers and thunderstorms. Cloudy. High near 55, with temperatures falling to around 45 in the afternoon. West wind 5 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night:
Chance Rain Showers then Partly Cloudy
Lo 35 °F
A chance of rain showers before 8pm. Partly cloudy, with a low around 35. West wind 6 to 12 mph, with gusts as high as 22 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Monday:
Mostly Sunny then Slight Chance Rain Showers
Hi 51 °F
A slight chance of rain showers after 3pm. Mostly sunny, with a high near 51. West wind around 8 mph. Chance of precipitation is 20%.
Monday Night:
Slight Chance Rain Showers then Partly Cloudy
Lo 31 °F
A slight chance of rain showers before 7pm. Partly cloudy, with a low around 31. Northwest wind around 7 mph. Chance of precipitation is 20%.
Tuesday:
Sunny
Hi 51 °F
Sunny, with a high near 51. Southwest wind around 7 mph.
Tuesday Night:
Partly Cloudy then Slight Chance Rain Showers
Lo 37 °F
A slight chance of rain showers after 2am. Partly cloudy, with a low around 37. South wind around 7 mph.
Wednesday:
Slight Chance Rain Showers
Hi 55 °F
A slight chance of rain showers before 4pm. Mostly cloudy, with a high near 55. Southwest wind around 9 mph.
Wednesday Night:
Partly Cloudy
Lo 39 °F
Partly cloudy, with a low around 39. West wind around 8 mph.
Thursday:
Mostly Sunny
Hi 63 °F
Mostly sunny, with a high near 63. Northwest wind around 8 mph.
Thursday Night:
Partly Cloudy
Lo 42 °F
Partly cloudy, with a low around 42. Northwest wind around 7 mph.
Friday:
Mostly Sunny
Hi 62 °F
Mostly sunny, with a high near 62. North wind 5 to 8 mph.
Friday Night:
Slight Chance Rain Showers
Lo 42 °F
A slight chance of rain showers after 9pm. Partly cloudy, with a low around 42. Northeast wind around 7 mph.
Saturday:
Chance Rain Showers
Hi 60 °F
A chance of rain showers. Partly sunny, with a high near 60. Northeast wind 5 to 8 mph.
NWS Hourly Forecast -
Tonight 7pm through Mon 6am
Issued by:
National Weather Service Boston / Norton, MA
Updated Sat Apr 18, 2026 3:32pm EDT
7:00pm
Dew Pt 41°F
Wind Chill: 45°F
E 6 mphPrecip: 1%
8:00pm
Dew Pt 41°F
Wind Chill: 44°F
E 6 mphPrecip: 1%
9:00pm
Dew Pt 42°F
Wind Chill: 44°F
E 5 mphPrecip: 2%
10:00pm
Dew Pt 42°F
Wind Chill: 45°F
E 3 mphPrecip: 1%
11:00pm
Dew Pt 41°F
E 2 mphPrecip: 1%
12:00am
Dew Pt 42°F
E 2 mphPrecip: 1%
1:00am
Dew Pt 42°F
SE 2 mphPrecip: 2%
2:00am
Dew Pt 42°F
SE 2 mphPrecip: 3%
3:00am
Dew Pt 43°F
S 2 mphPrecip: 6%
4:00am
Dew Pt 43°F
Wind Chill: 45°F
S 3 mphPrecip: 11%
5:00am
Dew Pt 44°F
Wind Chill: 46°F
S 3 mphPrecip: 15%
6:00am
Dew Pt 44°F
Wind Chill: 45°F
S 5 mphPrecip: 17%
7:00am
Dew Pt 45°F
Wind Chill: 45°F
S 5 mphPrecip: 22%
8:00am
Dew Pt 47°F
Wind Chill: 45°F
S 6 mphPrecip: 33%
Rain: 0.02 in
9:00am
Dew Pt 47°F
Wind Chill: 47°F
S 6 mphPrecip: 48%
Rain: 0.03 in
10:00am
Dew Pt 48°F
S 6 mphPrecip: 66%
Rain: 0.04 in
11:00am
Dew Pt 49°F
SW 6 mphPrecip: 76%
Rain: 0.04 in
12:00pm
Dew Pt 49°F
NW 8 mphPrecip: 83%
Rain: 0.04 in
1:00pm
Dew Pt 49°F
NW 10 mphPrecip: 97%
Rain: 0.05 in
2:00pm
Dew Pt 48°F
NW 13 mphPrecip: 100%
Rain: 0.04 in
3:00pm
Dew Pt 45°F
NW 13 mphPrecip: 100%
Rain: 0.04 in
4:00pm
Dew Pt 42°F
Wind Chill: 41°F
NW 13 mphPrecip: 81%
Rain: 0.03 in
5:00pm
Dew Pt 39°F
Wind Chill: 39°F
NW 13 mphPrecip: 58%
Rain: 0.02 in
6:00pm
Dew Pt 38°F
Wind Chill: 39°F
NW 12 mphPrecip: 41%
Rain: 0.01 in
7:00pm
Dew Pt 37°F
Wind Chill: 38°F
NW 10 mphPrecip: 24%
Rain: 0.01 in
8:00pm
Dew Pt 36°F
Wind Chill: 36°F
W 9 mphPrecip: 7%
9:00pm
Dew Pt 34°F
Wind Chill: 35°F
W 9 mphPrecip: 7%
10:00pm
Dew Pt 33°F
Wind Chill: 35°F
W 8 mphPrecip: 7%
11:00pm
Dew Pt 32°F
Wind Chill: 35°F
W 8 mphPrecip: 7%
12:00am
Dew Pt 31°F
Wind Chill: 33°F
W 8 mphPrecip: 7%
1:00am
Dew Pt 31°F
Wind Chill: 34°F
W 7 mphPrecip: 7%
2:00am
Dew Pt 30°F
Wind Chill: 33°F
W 7 mphPrecip: 7%
3:00am
Dew Pt 29°F
Wind Chill: 32°F
W 7 mphPrecip: 5%
4:00am
Dew Pt 28°F
Wind Chill: 31°F
W 6 mphPrecip: 3%
5:00am
Dew Pt 28°F
Wind Chill: 31°F
W 6 mphPrecip: 1%
6:00am
Dew Pt 29°F
Wind Chill: 31°F
W 6 mphPrecip: 2%
FORECAST DISCUSSION
Area Forecast Discussion
for Boston / Norton, MA
000
FXUS61 KBOX 182016
AFDBOX
Area Forecast Discussion
National Weather Service Boston/Norton MA
416 PM EDT Sat Apr 18 2026
.WHAT HAS CHANGED...
Splashover to minor coastal flooding possible around the midnight
high tide cycle for eastern coastal Massachusetts. Also, the gusts
associated with the cold front will bring marginal small craft
conditions to the southern waters. Otherwise, forecast hasn't
deviated from the previous discussion.
&&
.KEY MESSAGES...
- Nuisance coastal flooding, mainly splashover is possible
tonight around the midnight high tide cycle for east coast of
Massachusetts; including the island of Nantucket.
- Steady rain arrives Sunday with the passage of a cold front
and a period of breezy northwest winds. Turning much colder
Sunday night.
- Generally dry but cooler Monday morning. Increasing clouds
andspotty rain showers possible Monday afternoon with a weak
area of low pressure.
- Return to seasonable temperatures through Wednesday before
another cold front sweeps through.
&&
.DISCUSSION...
KEY MESSAGE 1...Nuisance coastal flooding, mainly splashover is
possible tonight around the midnight high tide cycle for east
coast of Massachusetts; including the island of Nantucket.
Guidance this morning continues to point towards very minor coastal
flooding for eastern Massachusetts and Nantucket during the
overnight high tide cycle (around midnight). Combination of onshore
flow and the astronomical tides could lend to splashover to minor
coastal flooding for most vulnerable low-lying locations. And as a
result, have opt'd to issue a Coastal Flood Statement. Please avoid
any prone area and never drive through standing water.
KEY MESSAGE 2...Steady rain arrives Sunday with the passage of
a cold front and a period of breezy northwest winds. Turning
much colder Sunday night.
Rest of Saturday and tonight should remain dry, however, a bank of
stratus off the coast will move onshore tonight. Low clouds and few
areas of drizzle (mainly across eastern SNE) through Sunday morning,
in addition to areas of locally dense fog across eastern MA. As for
the rest of Sunday, expecting a raw and chilly day. In fact, high
temperatures in the low to mid-50s occur during the late morning, as
a strong cold front will move through and send temperatures falling
shortly there after. This cold front brings widespread rain and a
few rumbles of thunder with limited instability. Rainfall rates are
moderate to heavy with PWATs 1.2" to 1.4" - rainfall amounts are in
the neighborhood of 0.25" to 0.50" with lower totals along and east
of I-95. Though, any convective showers have potential for heavier
rainfall - cannot discredit the HREF which shows potential for
localized values above an inch. And with much colder air advecting
into SNE, snow showers remain possible for the highest terrain of
western MA. Don't expect any impacts, but a light coating on
elevated surfaces remains possible. Associated with the cold front
is a brisk NW wind, gusts 20-30 MPH late morning and early afternoon
will lead to overall raw and chilly feeling. Clearing Sunday night
and easing winds, temperatures fall into the low to mid-30s, while
the higher terrain of northern Worcester County and NW MA dip into
the upper 20s.
KEY MESSAGE 3...Generally dry but cooler Monday morning.
Increasing clouds and spotty rain showers possible Monday
afternoon with a weak area of low pressure.
A colder airmass moves over southern New England Monday in the
wake of the cold front from Sunday. 925mb temperatures drop to
below 0C and 850mb temperatures drop to near -10C, leading to
cooler surface temperatures across the region... coastal regions
might reach into the low 50s, but most areas will likely remain
in the upper 40s for highs. Breezy westerly winds veering
northwesterly early to mid morning with some gusts possible in
the higher elevations. Winds will start to diminish as high
pressure approaches from the west, and lows Monday night likely
fall into the 20s for southern New England, with the exception
being the Cape/Islands and immediate coastal regions.
As we get into range for high-resolution guidance, confidence
is slowly ticking up in a weak area of low pressure spinning up
ahead of an approaching high pressure system that leads to
increasing cloudiness and spotty rain showers across southern
New England Monday afternoon. Exactly where these showers might
develop remains uncertain due to the wide range in both ensemble
and deterministic model guidance. Otherwise, incoming high
pressure should keep the region dry for much of the start of the
week before it exits heading into Wednesday.
KEY MESSAGE 4... Return to seasonable temperatures through
Wednesday before another cold front sweeps through.
High temperatures climb Tuesday and Wednesday before another
cold front moves through New England later Wednesday, bringing
chances for more rain showers. Winds return to southwesterlies,
supporting more seasonable highs in the upper 50s/low 60s.
Ensembles indicate a ridge building in towards the end of the
week then a large low pressure system moving through the Great
Lakes over the weekend. This would bring dry conditions through
late week then a return for rain chances through the weekend.
&&
.AVIATION /20Z SATURDAY THROUGH THURSDAY/...
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
18z TAF Update:
Through 00z: Moderate Confidence.
MVFR-IFR ceilings and VFR-MVFR visibilities. E winds 8-15 knots. Few
breaks in the clouds across NE MA to VFR through 00z.
Tonight: Moderate Confidence.
Ceilings deteriorate down to IFR-LIFR levels. Fog return, bringing
visibilities down to IFR and possibly LIFR across the Cape and
Islands. NE winds veer around to SE/S 5-10 knots.
Sunday: Moderate Confidence.
IFR-LIFR during the early morning hours with areas of mist or
drizzle. Locally dense fog possible across Cape Cod and Islands
through mid-morning. Cold front brings widespread RA from west to
east, 12z-15z, SW winds around 10 knots, becoming W/NW and
increasing to 10-15 knots with gusts 20-25 knots post-frontal
passage.
Sunday Night: High Confidence.
VFR. Diminishing wind gusts. W wind 5-10 knots.
KBOS Terminal... Moderate Confidence in TAF.
Brief MVFR conditions this afternoon, trending to IFR by 21z as a
bank of stratus and fog returns. Pockets of DZ overnight into early
Sunday morning. RA arrives 14z-16z, LLWS ahead of the cold front
too. Wind shifts to the W/NW by 18z-20z with gusts 20-25 knots.
Becoming VFR late in the day Sunday.
KBDL Terminal... Moderate Confidence in TAF.
Outlook /Monday through Thursday/...
Monday: VFR. Breezy. Slight chance SHRA.
Monday Night through Tuesday: VFR.
Tuesday Night through Wednesday: VFR. Breezy. Slight chance
SHRA.
Wednesday Night through Thursday: VFR.
&&
.MARINE...
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
Tonight through Sunday Night: High Confidence.
Overnight there are areas of low clouds and fog, SE to S wind less
than 25 knots and seas 2-4 feet. Strong cold front Sunday brings SCA
conditions, seas 3-5 feet, and W-NW gust up to 25 knots for southern
and eastern outer and waters south of mainland RI Sunday into early
Monday morning. Winds shift NW and ease following this frontal
passage late Sunday night.
Outlook /Monday through Thursday/...
Monday through Monday Night: Winds less than 25 kt. Slight
chance of rain showers.
Tuesday: Winds less than 25 kt.
Tuesday Night: Winds less than 25 kt. Slight chance of rain
showers.
Wednesday: Winds less than 25 kt. Seas locally approaching
5 ft. Slight chance of rain showers.
Wednesday Night through Thursday: Winds less than 25 kt.
&&
.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory from 11 AM to 6 PM EDT Sunday for ANZ235-
237.
Small Craft Advisory from 11 AM to 11 PM EDT Sunday for
ANZ254>256.
&&
$$
DISCUSSION...Dooley/McMinn
AVIATION...Dooley/McMinn
MARINE...Dooley/McMinn
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: 1 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
April:
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.
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:
Waxing Crescent (82%)
Moon set:
8:18am
Moon rise:
9:38pm