Lexington, Massachusetts, USA
38.8°F
3.8°C
Chilly
Clear
Tonight: Lo 30 °F
Sunday: Hi 51 °F
Dew Point:
27.3°F
Humidity:
63%
Barometer:
mb
Rain Rate: 0.00 in/hr
Rain Today: 0.00 in
Rain Friday: 0.00 in
Visibility: 10 miles
Wind:
Now: Calm
Avg: Calm
Gusts: 0 mph
For Lexington, range of possible snowfall from 0.0 to 0.1". 0.0" expected.
Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Sat Jan 28, 2023 3:06pm EST
Above normal temperatures continue into Sunday, along with mainly dry conditions, until Sunday evening when scattered showers impact the region. The weather turns colder next week, but the magnitude of the cold and timing remains uncertain. We also will have to watch for some wintry precipitation in the mid-to-late week timeframe, depending upon a few waves of low pressure passing close to our region.
Mostly Cloudy
Lo 30 °F
Mostly cloudy, with a low around 30. Southwest wind 2 to 6 mph.
Mostly Cloudy
Hi 51 °F
Mostly cloudy, with a high near 51. Southeast wind 3 to 15 mph, with gusts as high as 25 mph.
Slight Chance Rain Showers then Mostly Cloudy
Lo 36 °F
A slight chance of rain showers between 7pm and 8pm. Mostly cloudy, with a low around 36. Southwest wind 8 to 15 mph. Chance of precipitation is 20%.
Partly Sunny
Hi 46 °F
Partly sunny, with a high near 46. West wind around 7 mph.
Slight Chance Light Rain then Slight Chance Rain And Snow
Lo 29 °F
A slight chance of rain between 7pm and 1am, then a slight chance of rain and snow between 1am and 2am. Mostly cloudy, with a low around 29. West wind 7 to 10 mph. Chance of precipitation is 30%.
Partly Sunny
Hi 32 °F
Partly sunny, with a high near 32. Northwest wind 10 to 14 mph.
Partly Cloudy then Slight Chance Light Snow
Lo 17 °F
A slight chance of snow after 4am. Partly cloudy, with a low around 17. Northwest wind 7 to 10 mph.
Slight Chance Light Snow then Mostly Sunny
Hi 29 °F
A slight chance of snow before 11am. Mostly sunny, with a high near 29. West wind 7 to 14 mph.
Partly Cloudy
Lo 20 °F
Partly cloudy, with a low around 20. West wind 8 to 12 mph.
Mostly Cloudy
Hi 34 °F
Mostly cloudy, with a high near 34. West wind 8 to 13 mph.
Mostly Cloudy
Lo 20 °F
Mostly cloudy, with a low around 20. West wind around 12 mph.
Mostly Sunny
Hi 28 °F
Mostly sunny, with a high near 28. Northwest wind 10 to 16 mph.
Mostly Clear
Lo 7 °F
Mostly clear, with a low around 7. Northwest wind around 15 mph.
Sunny
Hi 24 °F
Sunny, with a high near 24. Northwest wind around 14 mph.
Issued by:
National Weather Service Boston / Norton, MA
Updated Sat Jan 28, 2023 3:06pm EST
000 FXUS61 KBOX 282321 AFDBOX Area Forecast Discussion National Weather Service Boston/Norton MA 621 PM EST Sat Jan 28 2023 .SYNOPSIS... Above normal temperatures continue into Sunday, along with mainly dry conditions, until Sunday evening when scattered showers impact the region. The weather turns colder next week, but the magnitude of the cold and timing remains uncertain. We also will have to watch for some wintry precipitation in the mid-to-late week timeframe, depending upon a few waves of low pressure passing close to our region. && .NEAR TERM /UNTIL 6 AM SUNDAY MORNING/... 630 PM update... Quiet weather continues this evening with minimal changes to the forecast necessary. Previous Discussion... * Above normal temps again tonight Tonight... Tranquil January weather this evening and overnight, as weak ridging advects across the area. The combination of weak high pressure, partly cloudy conditions and a dry airmass (dew pts in the 20s away from the south coast) will allow temps to cool off rapidly with sunset, especially with diminishing winds. Some uncertainty how low temps will get tonight, pending how much cloud cover moves across the area. Given this uncertainty, blended in some of the colder MOS guidance to derive overnight lows, which yields 20s mainly northwest of I-95, and low to mid 30s elsewhere. Still above normal for late January. && .SHORT TERM /6 AM SUNDAY MORNING THROUGH SUNDAY NIGHT/... 345 PM update... Sunday... * Late March-like temps again Low pressure moving thru western NY into northern New England will drive another warm sector into SNE Sunday. Even warmer 925 mb temps, +4C Sunday vs +1C Saturday. Thus, potentially warmer Sunday but also possibly more clouds than today. Although, this time of year with low sun angle, temps more driven from thermal advection than solar insolation. Therefore, we blended in some of the warmer NBM 75 percentile temps. This yields temps slightly milder than today, with highs 50-55, upper 40s along the immediate south coast and high terrain. Again, well above normal, about 15-20 degs! More typical highs for late March. Although, it will feel cooler given a brisk SSW wind 15-25 mph. Dry weather much of the day, but risk for scattered showers late as weak short wave and associated cold front approach the area. Sunday night... Weak cold front and associated low level SSW jet, providing modest thermal and moisture advection, including low level convergence, likely sufficient for scattered evening showers. Although, given deep layer moisture is limited along with weak synoptic forcing, some areas may remain dry. Thus, not a washout. Breezy and mild in the evening in response to low level WAA, then weak post frontal CAA brings temps down into the 30s regionwide overnight. Once again, above normal for late Jan. && .LONG TERM /MONDAY THROUGH SATURDAY/... 345 PM update... Highlights... * Mostly dry this week with periodic shots of light precipitation * Potential for much colder air toward the end of the week, but details are uncertain. Details... Overall a quiet, generally zonal weather pattern for the coming work week. Southern New England will be positioned between an upper level ridge of high pressure over the Caribbean and a trough over eastern Canada. Given the setup we'll stay dry save for a few disturbances mixed in. The first comes Monday night into Tuesday when a shortwave and surface cold front swings through kicking off some light, high elevation snow and low elevation rain. Behind that cold front a cooler airmass moves in and temperatures previously well above normal (in the 40s and low 50s Monday) will crash back to Earth. 850 mb temps around 0C for the weekend into Monday will drop to anywhere from -8 to -15C Tuesday through at least Thursday. This brings us afternoon highs in the 30s. A true surge of colder arctic air is possible around Friday into the weekend as deeper trough digs into the eastern seaboard. Timing and magnitude remain uncertain, but the global guidance indicates those 850 mb temps dropping up to another 15 degrees, as cold as -25 or -30C. We're not expecting a prolonged arctic intrusion, but a brief shot at much colder air is possible at the end of the week. A low passing to our south on Thursday may bring wet weather but ensemble probabilities of this coming close enough to impact southern New England are low. && .AVIATION /23Z SATURDAY THROUGH THURSDAY/... Forecaster Confidence Levels: Low - less than 30 percent. Medium - 30 to 60 percent. High - greater than 60 percent. 00z update... Tonight...High confidence. SKC, then VFR cloud bases entering northwest MA late. WSW winds 10-15 kt at 00z, then becoming light south late. Sunday...High confidence. VFR cloud bases, but MVFR cigs late northwest MA. Chance of scattered rain showers toward 00z. Light south winds in the morning become SSW winds in the afternoon, 15-25 kt. Sunday night...high confidence. VFR cloud bases, with MVFR cigs across northwest MA. Chance of scattered showers 00z-06z, then drying out and trending toward VFR 12z. SSW winds 15-25 kt at 00z, shift to west after 05z and diminish to 5-10 kt. KBOS Terminal...High confidence. Gusty WSW winds diminish 20z/21z, then become light WSW. KBDL Terminal...High confidence. Outlook /Monday through Thursday/... Monday & Monday night: Breezy. Slight chance RA. Tuesday: Breezy. Tuesday Night: Slight chance SN. Wednesday: Breezy. Slight chance SN. Wednesday Night through Thursday: Breezy. && .MARINE... Forecaster Confidence Levels: Low - less than 30 percent. Medium - 30 to 60 percent. High - greater than 60 percent. 345 PM update... Through Sunday night... Tonight...high confidence. Gusty SW winds 15-25 kt near shore this evening, diminish and become light south overnight. Dry weather and good vsby. Sunday...high confidence. Light south winds in the morning, becoming SSW 15-25 kt in the afternoon. Dry weather and good vsby, although low risk of scattered showers late in the day. Sunday night...high confidence. SSW winds in the evening of 15-25 kt, becoming west 10-15 kt overnight. Scattered evening showers, trending dry overnight. Outlook /Monday through Thursday/... Monday: Winds less than 25 kt. Areas of seas approaching 5 ft. Monday Night: Winds less than 25 kt. Areas of seas approaching 5 ft. Slight chance of rain. Tuesday: Winds less than 25 kt. Areas of seas approaching 5 ft. Tuesday Night: Winds less than 25 kt. Areas of seas approaching 5 ft. Slight chance of snow. Wednesday: Winds less than 25 kt. Seas locally approaching 5 ft. Slight chance of snow. Wednesday Night: Winds less than 25 kt. Seas locally approaching 5 ft. Thursday: Winds less than 25 kt. Seas locally approaching 5 ft. Slight chance of rain. && .HYDROLOGY... 345 PM update... Flood warnings continue for the Pawcatuck River in RI, impacting Westerly RI, and the Taunton River, impacting Bridgewater in southeast MA. Both rivers are in minor flood but continue to recede and will fall below flood stage this evening (Taunton River) and Sunday afternoon (Pawcatuck). && .BOX WATCHES/WARNINGS/ADVISORIES... CT...None. MA...None. RI...None. MARINE...Small Craft Advisory until 10 PM EST this evening for ANZ250- 254>256. && $$ SYNOPSIS...Nocera/BW NEAR TERM...Nocera/BW SHORT TERM...Nocera LONG TERM...BW AVIATION...Nocera/BW MARINE...Nocera/BW HYDROLOGY...
Radar images courtesy Weather Underground / Intellicast.
UV Index forecast high for today: 2 Low
Current (Estimated): 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:
0.00 in
Rain Today:
0.00 in
Friday:
6.06 in
January:
6.06 in
2023
12.6 in
Season Snow:
12 snow days in January
1:12pm
48.6°F
High today:
12:17am
29.7°F
Low today:
2:08pm
40.3°F
High Friday:
7:49am
28.0°F
Low Friday:
5:10am
22.5°F
Low wind chill today:
4:38am
22.1°F
Low wind chill Friday:
11:13am
31.8°F
High dew pt today:
1:46pm
26.6°F
High dew pt Friday:
10:46am
16 mph
Wind gust today:
12:45am
14 mph
Wind gust Friday:
No alerts/warnings active for Southeast Middlesex County.
Alerts active nearby in: Bristol County, MA; Kent County, RI; Plymouth County, MA; Providence County, RI; Washington County, RI
First Light:
6:32am
Sunrise:
7:02am
Sunset:
4:53pm
Twilight ends:
5:23pm
Daylight length:
09 hours 51 minutes
Phase:
First Quarter (54%)
Moon set:
12:04am
Moon rise:
10:46am