Lexington, Massachusetts, USA
50.5°F
10.3°C
Cool
Clear
Overnight: Lo 45 °F
Sunday: Hi 67 °F
Dew Point: 44.2°F
Humidity: 79%
Barometer:
mb
Rain Rate: 0.00 in/hr
Rain Today: 0.00 in
Rain Saturday: 0.09 in
Visibility: 10 miles
Wind:
Now: Calm
Avg: Calm
Gusts: 0 mph
Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Sun Oct 6, 2024 1:00am EDT
A cold front moves through Southern New England late Sunday night into Monday, bringing a period of rain showers. This cold front will usher in a cooler, fall-like weather pattern for the rest of the work week.
Clear
Lo 45 °F
Clear, with a low around 45. North wind around 2 mph.
Sunny
Hi 67 °F
Sunny, with a high near 67. Northeast wind 1 to 6 mph.
Mostly Cloudy then Chance Rain Showers
Lo 51 °F
A chance of rain showers after 3am. Mostly cloudy, with a low around 51. Southeast wind 1 to 6 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Patchy Fog
Hi 63 °F
A chance of rain showers before 7am, then rain showers likely and patchy fog between 7am and 10am, then patchy fog and showers and thunderstorms. Cloudy, with a high near 63. South wind 2 to 8 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Chance Rain Showers
Lo 47 °F
A chance of rain showers and patchy fog before 2am. Partly cloudy, with a low around 47. Northwest wind 2 to 6 mph. Chance of precipitation is 40%.
Sunny
Hi 63 °F
Sunny, with a high near 63. Northwest wind around 8 mph.
Mostly Clear
Lo 40 °F
Mostly clear, with a low around 40. West wind around 6 mph.
Mostly Sunny
Hi 60 °F
Mostly sunny, with a high near 60. West wind 5 to 8 mph.
Mostly Clear
Lo 40 °F
Mostly clear, with a low around 40. West wind around 7 mph.
Sunny
Hi 59 °F
Sunny, with a high near 59. Northwest wind 7 to 10 mph, with gusts as high as 22 mph.
Mostly Clear
Lo 43 °F
Mostly clear, with a low around 43. Northwest wind around 9 mph.
Sunny
Hi 62 °F
Sunny, with a high near 62. Northwest wind around 9 mph.
Mostly Clear
Lo 45 °F
Mostly clear, with a low around 45. West wind around 8 mph.
Sunny
Hi 68 °F
Sunny, with a high near 68. West wind around 7 mph.
Issued by:
National Weather Service Boston / Norton, MA
Updated Sun Oct 6, 2024 1:00am EDT
000 FXUS61 KBOX 060536 AFDBOX Area Forecast Discussion National Weather Service Boston/Norton MA 136 AM EDT Sun Oct 6 2024 .SYNOPSIS... A cold front moves through Southern New England late Sunday night into Monday, bringing a period of rain showers. This cold front will usher in a cooler, fall-like weather pattern for the rest of the work week. && .NEAR TERM /THROUGH TODAY/... 930 PM Update... Radiational cooling has sprung into action after sunset with temperatures falling into the upper 40s and low 50s at our typically radiative sites. Urban heat islands, like Boston and Hartford, were grasping the the last 60s of the evening at the top of the hour ob, but expecting they too will fall below that mark in the next hour or so. With dewpoints in the upper 30s to low 40s across the interior, temps have a ways to fall under clear skies tonight. Previous Update... Daytime cu is expected to linger before clearing out tonight. Radiational cooling with dew points reaching the lower 40s will help bring lows down to the 40s, particularly towards the interior. Lows along the coast and within the urban heat islands of Providence and Boston could reach the lower 50s, but not below that just yet. && .SHORT TERM /TONIGHT THROUGH 6 PM MONDAY/... Weak high pressure provides relatively tranquil weather to start Sunday, which then continues into first part of Sunday night. Then looking at the combination of a cold front and a mid level shortwave to provide our next chance for showers late Sunday night into Monday. This front should still be lingering near the east coast of MA by Monday evening, so thinking unsettled conditions will be more the rule Monday. Moisture is quite a bit deeper than the past few systems that have come trough southern New England. This should be a greater chance for rainfall than we have had in a while. There is a low risk for isolated thunderstorms late Sunday Night into Monday. Not the best environment expected, with meager mid level and poor low level lapse rates. Will need to monitor this potential with later forecasts, but severe weather is not anticipated. Near to slightly below normal temperatures expected during this portion of the forecast. && .LONG TERM /MONDAY NIGHT THROUGH SATURDAY/... Highlights: * Dry and cooler weather is expected for much of next week. * Cold overnights may lead to areas of frost, mainly across northern Massachusetts Tuesday night. With frost possibly more widespread on Wednesday. There are no significant changes to the extended section of the forecast. The coming week features dry and noticeably lower temperatures. The only active weather is Monday night through predawn Tuesday with the passage of a cold front, during this time scattered showers are still possible across Rhode Island and eastern Massachusetts. Given this is 48 to 60 hours out, timing could sway by a few hours. Behind the departing front, surface high builds to the northwest of southern New England on Tuesday though Friday. This provides quiet weather conditions for the rest of the work week. Aloft, there is an anomolous mid-level low pressure system sitting to our north and ushers cooler airmass through northwest flow into southern New England. True taste of fall with daily highs Tuesday through Friday between the upper 50s and lower 60s, as for nighttime lows, 30s and lower 40s Tuesday night through Thursday night. Did adjust minimum temperatures by blending in the cooler 25th percentile of the NMB on those nights because of the potential for effective radiation cooling, clear sky and light winds. These conditions could lead to the first frost of the season for some areas in northern Massachusetts. It is worth noting, average first frost for northern Massachusetts is around the 1st of October, since we are past is date, there would be no headlines issued. Though, areas outside of the east slopes of the Berkshires and northern Worcester Hills, our frost and freeze program remains active through the 11th of October. Potentially could have lows the morning of October 10th around the mid-30s. Either way, if you have fall mums sitting outside, be mindful of the cooler weather that is upon us this week. As previously mentioned, expect a mainly dry week ahead. While there will be shortwave energy pivoting around the mid-level low to our north, PWATs are VERY low, mainly below 0.5", but at times less than 0.25". Given lack of sensible moisture, not expecting any rainfall. As for an early look at the upcoming holiday weekend, Saturday is dry with seasonable high temperatures in the upper 60s to 70F. The second-half of the weekend there remains uncertainty amongst model guidance, but as that is more than 7 days out, there is still time for things to change. && .AVIATION /05Z SUNDAY THROUGH THURSDAY/... Forecast Confidence Levels: Low - less than 30 percent. Moderate - 30 to 60 percent. High - greater than 60 percent. 06z TAF Update... Today...High Confidence. Mainly VFR. However...some marginal MVFR ceilings may roll in off the ocean this morning and impact parts of the Cape and Islands for a time today. Lower risk these marginal MVFR ceilings flirt with the BOS terminal...but will have to monitor. Light N winds shifting to the south this afternoon...but with sea breezes along portions of the immediate coast. Tonight and Monday...High Confidence this evening with moderate confidence overnight into Monday. VFR conditions dominate this evening. MVFR-IFR conditions should overspread most areas from west to east between 06z to 12z Mon along with widespread showers. This process may be 1 to 3 hours later towards the Cape and Islands. Widespread showers with the risk for an embedded t-storm or two will be possible on Mon. The back edge of the showers should be east of the CT River Valley by Mon mid afternoon and near the I-95 corridor by early Mon evening. Conditions to improve to VFR during the afternoon and approach the I-95 corridor by early evening. S winds 5-10 knots Mon am should shift to the NW across interior southern New England during Mon pm behind the cold frontal passage. KBOS TAF...Moderate confidence in TAF. Generally VFR conditions expected today. However...a period of marginal MVFR ceilings may flirt with the terminal for a brief time today...depending on how far west clouds are able to back in off the ocean. N winds shift to the E by early afternoon around 10 knots. KBDL TAF... High Confidence in TAF. VFR into this evening. Outlook /Monday Night through Thursday/... Tuesday Night through Wednesday: VFR. Wednesday Night through Thursday Night: VFR. Breezy. Friday: Breezy. && .MARINE... Forecaster Confidence Levels: Low - less than 30 percent. Medium - 30 to 60 percent. High - greater than 60 percent. Saturday...High Confidence Scattered showers possible early Saturday morning into Saturday mid-day, though showers may linger across the eastern outer waters into Saturday evening. Winds shift behind passing front to the NW Saturday morning; winds less than 25 kts. Waves 2-4 ft. Saturday Night...High Confidence Winds 10-20 kts with higher winds confined to the outer waters. Seas grow to 5-6ft overnight tonight, prompting the issuance of a SCA from 06Z and beyond. Sunday... High Confidence Winds less than 25kt but seas across the outer waters continue to range from 4-6ft. SCA continues for the outer waters through the day Sunday, and beyond. Outlook /Monday Night through Thursday/... Tuesday Night: Winds less than 25 kt. Areas of seas approaching 5 ft. Wednesday through Wednesday Night: Winds less than 25 kt. Seas locally approaching 5 ft. Thursday through Thursday Night: Winds less than 25 kt. Areas of seas approaching 5 ft. Friday: Winds less than 25 kt. Seas locally approaching 5 ft. && .BOX WATCHES/WARNINGS/ADVISORIES... CT...None. MA...None. RI...None. MARINE...Small Craft Advisory until 8 AM EDT Tuesday for ANZ250-254-255. Small Craft Advisory from 4 AM Monday to 8 AM EDT Tuesday for ANZ256. && $$ SYNOPSIS...Belk/Dooley/Hrencecin NEAR TERM...Hrencecin/KS SHORT TERM...Belk LONG TERM...Dooley AVIATION...Frank/Dooley MARINE...Belk/Dooley/Hrencecin
Radar images courtesy Weather Underground / Intellicast.
UV Index forecast high for today: 4 Medium
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:
0.09 in
Saturday:
0.09 in
October:
34.87 in
2024
12:00am
54.0°F
High today:
2:34am
50.5°F
Low today:
1:13pm
72.0°F
High Saturday:
11:56pm
54.0°F
Low Saturday:
12:00am
46.6°F
High dew pt today:
10:56am
60.1°F
High dew pt Saturday:
None
Wind gust today:
1:22pm
8 mph
Wind gust Saturday:
No alerts/warnings active for Southeast Middlesex County.
First Light:
6:20am
Sunrise:
6:48am
Sunset:
6:17pm
Twilight ends:
6:45pm
Daylight length:
11 hours 29 minutes
Phase:
Waxing Crescent (11%)
Moon rise:
10:42am
Moon set:
7:50pm