Lexington, Massachusetts, USA
Point Forecast Updated Fri Mar 29, 2024 2:57am EDT
Cooler than normal temperatures are expected today and Tuesday along with spot rain chance late tonight and Tuesday across for parts of Rhode Island and eastern Massachusetts. Considerably milder Wednesday with continued risk for showers. A frontal wave will bring more widespread rain Thursday into early Friday then drying in the afternoon. Dry and seasonable next weekend but blustery on Saturday.
Light Rain
Lo 38 °F
Rain and patchy fog. Cloudy, with a low around 38. Northwest wind around 10 mph. Chance of precipitation is 80%. New rainfall amounts less than a tenth of an inch possible.
Light Rain Likely
Hi 51 °F
Rain likely before 1pm. Cloudy, with a high near 51. Northwest wind 9 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
Partly Cloudy
Lo 35 °F
Partly cloudy, with a low around 35. Northwest wind around 15 mph, with gusts as high as 25 mph.
Sunny
Hi 54 °F
Sunny, with a high near 54. West wind 10 to 15 mph.
Mostly Cloudy then Slight Chance Light Rain
Lo 38 °F
A slight chance of rain after 4am. Mostly cloudy, with a low around 38. West wind 5 to 9 mph. Chance of precipitation is 20%.
Partly Sunny
Hi 53 °F
Partly sunny, with a high near 53. Northwest wind 5 to 14 mph.
Partly Cloudy
Lo 34 °F
Partly cloudy, with a low around 34. Northwest wind 6 to 14 mph.
Partly Sunny
Hi 53 °F
Partly sunny, with a high near 53. Northeast wind 6 to 9 mph.
Mostly Cloudy then Chance Light Rain
Lo 37 °F
A chance of rain after midnight. Mostly cloudy, with a low around 37. Southeast wind around 9 mph. Chance of precipitation is 30%.
Light Rain Likely
Hi 44 °F
Rain likely. Mostly cloudy, with a high near 44. East wind 8 to 14 mph. Chance of precipitation is 70%.
Light Rain Likely
Lo 36 °F
Rain likely. Cloudy, with a low around 36. Northeast wind around 15 mph. Chance of precipitation is 70%.
Light Rain Likely
Hi 43 °F
Rain likely. Mostly cloudy, with a high near 43. Northeast wind 14 to 17 mph. Chance of precipitation is 70%.
Light Rain Likely
Lo 36 °F
Rain likely. Mostly cloudy, with a low around 36. North wind around 18 mph. Chance of precipitation is 70%.
Chance Light Rain
Hi 45 °F
A chance of rain. Mostly cloudy, with a high near 45. Northwest wind 20 to 23 mph, with gusts as high as 36 mph. Chance of precipitation is 40%.
Updated Fri Mar 29, 2024 2:57am EDT
000 FXUS61 KBOX 251729 AFDBOX Area Forecast Discussion National Weather Service Boston/Norton MA 129 PM EDT Mon Mar 25 2024 .SYNOPSIS... Cooler than normal temperatures are expected today and Tuesday along with spot rain chance late tonight and Tuesday across for parts of Rhode Island and eastern Massachusetts. Considerably milder Wednesday with continued risk for showers. A frontal wave will bring more widespread rain Thursday into early Friday then drying in the afternoon. Dry and seasonable next weekend but blustery on Saturday. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... 945 AM Update... * Some clouds today focused along the coast, but partial sun * Highs will be in the 40s & struggle to break 40 on the coast * Windy along the coast, especially Cape & Islands Previous forecast is on track. Large high pressure from Maine into the Canadian Maritimes was combining with a distant offshore storm to our south. The result is a cool/marine northeast low level flow of air into our region. High temps will be held into the 40s and may struggle to get much passed 40 along portions of the immediate coast. There was a fair amount of mid- high level cloudiness around especially towards the coast...but expect partial sunshine at least across the interior. The pressure gradient will result in windy conditions along the coast. NE Gusts of 25 to 35 mph along the eastern MA coast...35-45 mph gusts on the Cape/Islands and 45-50 mph at times for Nantucket. We opted to issue a Wind Advisory through 8 pm to cover this for Nantucket. The windy conditions will keep Wind Chills in the upper 20s and lower 30s along the coast right through the afternoon! && .SHORT TERM /6 PM THIS EVENING THROUGH 6 PM TUESDAY/... Highlights: * Spotty showers overnight and into Tuesday for eastern Massachusetts and Rhode Island. * Gusty northeast winds continues along with chilly temperatures by late March standards. Tonight: Increasing clouds and ceilings lowering low chance of a scattered rain shower predawn across the Islands and outer Cape Cod as moisture from a distant ocean storm lifts north. Otherwise a generally dry night. Low temperatures will vary depending on location and amount of sky cover there is. Current thought are there will be enough clouds over much of eastern Massachusetts and Rhode Island to allow for a more mild night with lows between the upper 20s and mid 30s. Further west where there is less clouds and light winds temperatures will be able to fall well into the low 20s and upper teens. Tuesday: Surface high pressure shifts northeast, but the flow still remains onshore - yet another cool/raw day with high temperatures in the upper 30s and low 40s. Wind remains out of the northeast 10 to 15 mph, gusting to 25 mph and coastal areas 15 to 20 mph, gusts to 35 mph. Little sunshine to be had with spotty showers possible across eastern Massachusetts and Rhode Island, by no means is this a washout, QPF amounts are generally a few hundredths of an inch east of the I-95 corridor. && .LONG TERM /TUESDAY NIGHT THROUGH SUNDAY/... Highlights: * Spotty light rain showers Tue night, then turning milder Wed but continued risk for showers * More widespread rain developing Thu into early Fri, possibly heavy at times in eastern New Eng * Dry and seasonable next weekend with gusty NW winds Sat. Details: Overall a pretty unsettled pattern through the end of the workweek, with several chances of at least light showers and abundant cloud cover. More widespread rainfall expected toward the end of the week but details are still a bit uncertain. Tuesday night and Wednesday: Persistent NE flow and abundant low level moisture will keep low clouds across SNE Tue night with spotty light rain at times, especially eastern half SNE where deeper moisture is present. Surface ridging extending south from the Maritimes favors a cold air damming set up and temps may drop to near 32 across northern MA higher elevation where localized light freezing rain/drizzle is possible. The risk is low but something to monitor early this week. Then on Wed, more of the same with chance of showers at times as a frontal boundary approaches from the west and interacts with modest moisture plume. Milder Wed as winds turn southerly with highs in the 50s. Wednesday night through Friday: Surface front will cross SNE Wed night and likely stall to the east on Thu as upper trough amplifies to the west. Favorable jet dynamics with right entrance region of the jet acting on deep moisture plume just to the east will result in widespread rain developing and lifting northward across SNE late Wed night through Thu night. Where the axis of rainfall sets up is still somewhat uncertain and will depend on the location of the stalled front and deep moisture axis. Will also have to consider the track of a southern stream frontal wave which may enhance rainfall across SE New Eng as strong shortwave lifts NE from the SE CONUS. Consensus of the deterministic and ensemble guidance favor eastern New Eng for potential heavy rainfall although there are subtle differences in the rainfall axis. ECMWF ensembles are focused more across Cape/Islands while GEFS and CMC ensembles have potential heavy rain impacting much of eastern New Eng. Ensemble probs of greater than 1" are high (70-80%) within the rainfall axis and the 90th percentile QPF values exceed 2 inches. A significant rainfall event is possible in eastern New Eng and probabilistic hydrographs from the NAEFS and GEFS indicate renewed flooding for RI rivers. Bulk of the rain should begin to exit on Fri but timing is uncertain and will depend on the track and timing of the frontal wave. Highest PoPs Fri will be in the east. Saturday and Sunday: System deepens and moves into the Maritimes with drier NW flow which should result in a mostly dry weekend, although NW winds will be gusty on Sat. Seasonable temps. && .AVIATION /17Z MONDAY THROUGH FRIDAY/... Forecast Confidence Levels: Low - less than 30 percent. Moderate - 30 to 60 percent. High- greater than 60 percent. 18z TAF Update... This afternoon & tonight...High Confidence. VFR conditions persist through the evening. It will continue to be windy along the coast into this evening with gusts of 25 to 35 knots...but 35-45 knots across the Cape/Islands with the strongest of those winds across Nantucket. Mainly MVFR ceilings should advance westward off the ocean during the overnight hours. Timing is a bit uncertain...but think they will approach as far west as areas near the CT River Valley by 12z. Tuesday & Tuesday night...High Confidence. Widespread low end MVFR-IFR will continue to spread west Tue morning eventually covering the entire region. We also expect to see spotty light showers along with areas of drizzle & fog to develop. This will be first across areas near the coast and may spread further inland. By Tue night conditions will be more in the line of IFR to localized LIFR ceilings/visibilities with spotty light showers, drizzle and fog patches. Low risk for a period of freezing drizzle in the highest terrain of the Berks/northern Worcester Hills...mainly about 1K feet. NE wind gusts of 20 to 30 knots along the coast and up to 35 knots for the Cape/Islands with the strongest during the first half of the day. Wind gusts will be on the downtrend later Tue and especially Tue night. KBOS TAF...High confidence in TAF. KBDL TAF...High confidence in TAF. Outlook /Wednesday through Friday/... Wednesday through Wednesday Night: Mainly VFR, with local IFR possible. Chance RA. Thursday: Mainly MVFR, with areas IFR possible. RA likely. Thursday Night: Mainly MVFR, with local IFR possible. Breezy. Chance RA. Friday: Mainly VFR, with local MVFR possible. Windy with gusts up to 30 kt. Slight chance RA. && .MARINE... Forecaster Confidence Levels: Low - less than 30 percent. Medium - 30 to 60 percent. High - greater than 60 percent. Today: Low pressure system moves north and continues gusty NE gales on the southern and eastern outer waters. Northeast waters gusts near 30 knots. Seas on the outer waters are greater than 14 feet, near shore waves are 6 to 10 feet. Tonight: Low pressure to our south will continue to bring strong NE winds 20-30 kts gusting to 40 kts. Seas on the outer waters 12 to 15 feet, near shore waves are 7 to 11 feet. Tuesday: Low pressure system drifts south late in the day, gusty NE gales continue first half of the day before diminishing. Seas on the outer waters lower to 8 to 12 feet, while southern near shore waters are 4 to 8 feet, eastern near shore waters are up to 10 feet. Outlook /Tuesday Night through Friday/... Tuesday Night: Winds less than 25 kt. Rough seas up to 12 ft. Chance of rain. Wednesday: Winds less than 25 kt. Areas of rough seas. Chance of rain. Wednesday Night: Winds less than 25 kt. Areas of rough seas. Rain likely. Thursday: Winds less than 25 kt. Seas up to 5 ft. Rain likely. Thursday Night: Low risk for Small Craft Advisory winds with gusts up to 25 kt. Areas of rough seas. Rain. Friday: Moderate risk for Small Craft Advisory winds with local gusts up to 30 kt. Rough seas up to 9 ft. Chance of rain. && .BOX WATCHES/WARNINGS/ADVISORIES... CT...None. MA...Wind Advisory until 8 PM EDT this evening for MAZ024. RI...None. MARINE...Small Craft Advisory until 8 PM EDT Tuesday for ANZ230-236-237- 250-251. Gale Warning until 11 PM EDT this evening for ANZ231. Gale Warning until 2 PM EDT Tuesday for ANZ232>235-254>256. && $$ SYNOPSIS...KJC/Dooley NEAR TERM...Frank SHORT TERM...Dooley LONG TERM...KJC AVIATION...Frank/KJC MARINE...KJC/Dooley
Point forecast:
https://api.weather.gov/gridpoints/BOX/65,93/forecast
Zone forecast:
https://api.weather.gov/zones/forecast/MAZ014/forecast
Hourly forecast:
https://api.weather.gov/gridpoints/BOX/65,93/forecast/hourly
Hourly detail:
https://api.weather.gov/gridpoints/BOX/65,93
Point detail:
https://api.weather.gov/points/42.4399,-71.2405
Alerts:
https://api.weather.gov/alerts?active=1&point=42.4399,-71.2405