Lexington, Massachusetts, USA
Point Forecast Updated Sat Apr 20, 2024 12:35am EDT
High pressure establishes itself over Southern New England through midweek. It will bring abundant sunshine, dry weather, seasonably mild temperatures and northwest breezes through Tuesday. Dry Wednesday through at least mid-day Thursday before more unsettled conditions develop late week. Above normal temperatures return
Chance Rain Showers
Lo 47 °F
A chance of rain showers before 5am, then rain showers likely and patchy fog. Cloudy, with a low around 47. South wind around 8 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
Rain Showers
Hi 61 °F
Rain showers and patchy fog. Mostly cloudy, with a high near 61. Southwest wind 6 to 12 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch possible.
Slight Chance Rain Showers then Partly Cloudy
Lo 36 °F
A slight chance of rain showers before 7pm. Partly cloudy, with a low around 36. West wind 5 to 12 mph. Chance of precipitation is 20%.
Mostly Sunny
Hi 59 °F
Mostly sunny, with a high near 59. West wind 6 to 14 mph, with gusts as high as 25 mph.
Mostly Clear
Lo 39 °F
Mostly clear, with a low around 39. West wind around 12 mph, with gusts as high as 22 mph.
Sunny
Hi 56 °F
Sunny, with a high near 56. West wind 9 to 15 mph.
Mostly Clear
Lo 34 °F
Mostly clear, with a low around 34. Northwest wind 7 to 14 mph.
Mostly Sunny
Hi 59 °F
Mostly sunny, with a high near 59. Southwest wind 7 to 16 mph.
Mostly Cloudy then Slight Chance Rain Showers
Lo 44 °F
A slight chance of rain showers after 4am. Mostly cloudy, with a low around 44. South wind around 16 mph.
Chance Light Rain
Hi 60 °F
A slight chance of rain showers before 8am, then a chance of rain. Mostly cloudy, with a high near 60. South wind 14 to 20 mph. Chance of precipitation is 50%.
Chance Light Rain
Lo 36 °F
A chance of rain. Mostly cloudy, with a low around 36. Southwest wind 15 to 18 mph. Chance of precipitation is 50%.
Slight Chance Light Rain then Mostly Sunny
Hi 54 °F
A slight chance of rain before 7am. Mostly sunny, with a high near 54. West wind around 16 mph.
Partly Cloudy
Lo 35 °F
Partly cloudy, with a low around 35. Northwest wind 12 to 15 mph.
Sunny
Hi 56 °F
Sunny, with a high near 56. Northwest wind around 14 mph.
Updated Sat Apr 20, 2024 12:35am EDT
000 FXUS61 KBOX 160115 AFDBOX Area Forecast Discussion National Weather Service Boston/Norton MA 915 PM EDT Mon Apr 15 2024 .SYNOPSIS... High pressure establishes itself over Southern New England through midweek. It will bring abundant sunshine, dry weather, seasonably mild temperatures and northwest breezes through Tuesday. Dry Wednesday through at least mid-day Thursday before more unsettled conditions develop late week. Above normal temperatures return && .NEAR TERM /UNTIL 6 AM TUESDAY MORNING/... 915 PM Update... * A few showers until around midnight in RI/SE MA * Otherwise...clearing overnight & lows upper 30s to middle 40s A cold front/moisture starved shortwave crossing the southeast New England coast has resulted in a few showers this evening...mainly in RI/SE MA. This activity will be hit or miss and should wind down near or not too long after midnight. Otherwise...dry WNW flow behind the cold front should allow the current clouds across our southern areas to depart. So mainly clear skies & diminishing winds overnight should allow overnight low temps to drop into the upper 30s to the middle 40s by daybreak. && .SHORT TERM /6 AM TUESDAY MORNING THROUGH TUESDAY NIGHT/... Tomorrow Very little change in the synoptic pattern tomorrow. Southern New England will continue to be positioned west of a trough axis slowly shifting east over The Atlantic Waters. This will continue to support a deep northwest flow pattern over the region. Air mass will be a bit cooler than on Monday, but efficient mixing will allow for another mild afternoon with high temps in the mid to upper 60s. Low 70s will be a bit harder to achieve. Additionally, we can probably expect some diurnal CU developing in the afternoon thanks to the steep lapse rates. Winds aloft don't look overly impressive, so would expect any gusts from boundary layer mixing to be limited to about 20 mph. Overall a pleasant spring afternoon. Tomorrow Night Quiet weather continues again tomorrow night. A mid-level ridge axis will build over southern New England along with surface high pressure. This should support light winds out of the north and clear skies allowing for efficient radiational cooling. Temperatures could dip to freezing across interior/northwest MA with upper 30s to low 40s likely elsewhere. && .LONG TERM /WEDNESDAY THROUGH MONDAY/... Long term Wednesday Axis of a shortwave ridge aloft moves over the region with a shortwave trough right on its tail. A mainly dry column on Wednesday will keep precip associated with the shortwave out until late Wednesday night. The shortwave will bring high clouds and filtered sunshine to region Wednesday. This will keep high temps down a bit compared to Tuesday only reaching the low to mid 60s inland, and low to mid 50s along the immediate coastlines. Thursday Shortwave ridge moves north, while the shortwave trough breaks down, but still sends some cyclonic vorticity into the region. Mid and upper level moisture increases late Wednesday into Thursday. However, PWATS will be on the low side topping out near 0.8 to 0.9 inches. With weak forcing and low level dry air, probabilities for greater then 0.1 inches of rain from the LREF is less then 50%. With cloud cover and wet conditions around, High temperature only top into the low 50s region wide esspically with onshore flow. Winds Thursday will be on the blustery side with easterly wind gusts of 15- 20mph. Friday Latest model guidance is trending drier for the end of the work week with another shortwave ridge moving through along with drying mid levels. Even though the chance for rain is decreasing, clouds will continue to be around with more high level cirrus moving in ahead of a closed trough over the Great Lakes, and some low to mid level diurnal stratocumulus. Highs top out in the upper 50s with low 60s possible. Winds remain a bit gusty out of the south at 10-15mph. Saturday and Sunday: Forecast confidence for next weekend is quite low right now with large timing differences among model guidance. The upper level closed low over the Great Lakes looks to weaken as it moves east towards the region. This could bring a cold front and isolated showers to the region, however, not every source of guidance is in agreement that the cold front will actually make it into SNE. Stuck with the NBM which gives 30-40% POP's for Saturday and 10-20% for Sunday. As for temps over the weekend, highs rebound back into the low to mid 60s, but will likely end up on the lower side if rain ends up falling during the daytime hours. && .AVIATION /01Z TUESDAY THROUGH SATURDAY/... Forecast Confidence Levels: Low - less than 30 percent. Moderate - 30 to 60 percent. High- greater than 60 percent. 00Z TAF Update: Tonight: High confidence. VFR. Outside chance at a shower affecting Cape/Islands terminals late tonight/midnight. WNW winds continue but slacken to around 5-8 kt. Tuesday: High confidence. VFR mainly SKC. NW winds increase to 8-12 kt with gusts to 20 kt starting mid-morning and continuing till sundown. There is a low chance for sea breezes to develop mid to late morning before better mixing kicks them out by early afternoon Tomorrow Night: High Confidence. VFR. Steady NW winds becoming more N after 06Z. KBOS TAF...High confidence in TAF. VFR. Low chance a sea breeze sneaks in between 14-18z tomorrow esspically since one almost made it in today. Otherwise winds remain NW becoming gusty after 18z. KBDL TAF...High confidence in TAF. VFR. NW winds becoming gusty in the afternoon. Outlook /Wednesday through Saturday/... Wednesday: VFR. Wednesday Night: VFR. Chance SHRA. Thursday through Thursday Night: VFR. Breezy. Chance SHRA. Friday: Mainly VFR, with local MVFR possible. Slight chance SHRA. Friday Night: Mainly VFR, with local MVFR possible. Chance SHRA. Saturday: VFR. Breezy. Chance SHRA. && .MARINE... Forecaster Confidence Levels: Low - less than 30 percent. Medium - 30 to 60 percent. High - greater than 60 percent. Tonight through tomorrow night High pressure begins to work its way over the coastal waters tonight through mid-week. This will support subsiding seas and diminishing winds across the coastal waters through tomorrow night. Light west/northwest winds tonight and tomorrow will become light out of the north tomorrow night. Seas fall below SCY criteria over the coastal waters after midnight. Outlook /Wednesday through Saturday/... Wednesday: Winds less than 25 kt. Wednesday Night: Winds less than 25 kt. Chance of rain showers. Thursday: Winds less than 25 kt. Seas locally approaching 5 ft. Chance of rain showers. Thursday Night through Friday: Winds less than 25 kt. Areas of seas approaching 5 ft. Slight chance of rain showers. Friday Night through Saturday: Winds less than 25 kt. Areas of seas approaching 5 ft. Chance of rain showers. && .BOX WATCHES/WARNINGS/ADVISORIES... CT...None. MA...None. RI...None. MARINE...Small Craft Advisory until 2 AM EDT Tuesday for ANZ254>256. && $$ SYNOPSIS...Loconto/KS NEAR TERM...Frank SHORT TERM...RM LONG TERM...KP AVIATION...RM/KP MARINE...RM/KP
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