Feels like 86.5°F
Today: Hi 83 °F ↓
Tonight: Lo 57 °F
Dew Point: 65.1°F
UV Index: 5.7
Barometer: 29.70 in S
Rain Rate: 0.00 in/hr
Rain Today: 0.00 in
Rain Sunday: 0.01 in
Visibility: 10 miles
Avg: 1 mph
Gusts: 6 mph
National Weather Service Boston / Norton, MA
Point Forecast Updated Mon May 16, 2022 10:48am EDT
Warm and humid weather will continue through Monday. Expect a few showers tonight, then most of Sunday ends up dry aside from a brief afternoon shower or thunderstorm. A more widespread round of showers and thunderstorms is expected late Monday, especially across the interior as a cold front crosses the region. A return to cooler, but seasonable temperatures occurs Tuesday through Thursday. Warmer weather begins to return Friday with the potential for near record heat by next Saturday.
Partly Sunny then Isolated Showers And T-Storms
Hi 83 °F ↓
Isolated showers and thunderstorms after 3pm. Partly sunny. High near 83, with temperatures falling to around 77 in the afternoon. South wind 5 to 14 mph. Chance of precipitation is 20%.
Chance Showers And T-Storms
Lo 57 °F
A chance of showers and thunderstorms before 1am, then isolated showers and thunderstorms between 1am and 2am. Mostly cloudy, with a low around 57. Southwest wind 9 to 14 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
Hi 73 °F
Mostly sunny, with a high near 73. West wind 12 to 18 mph.
Lo 51 °F
Mostly clear, with a low around 51. West wind 10 to 16 mph.
Hi 71 °F
Sunny, with a high near 71. Northwest wind 12 to 15 mph.
Lo 49 °F
Partly cloudy, with a low around 49. West wind 2 to 12 mph.
Mostly Sunny then Slight Chance Rain Showers
Hi 70 °F
A slight chance of rain showers after 1pm. Mostly sunny, with a high near 70. Southwest wind 3 to 8 mph.
Slight Chance Rain Showers then Partly Cloudy
Lo 52 °F
A slight chance of rain showers before 9pm. Partly cloudy, with a low around 52. Southwest wind 3 to 7 mph.
Hi 76 °F
Mostly sunny, with a high near 76. South wind 3 to 9 mph.
Lo 60 °F
Mostly cloudy, with a low around 60. South wind 5 to 9 mph.
Mostly Sunny then Slight Chance Rain Showers
Hi 89 °F
A slight chance of rain showers after 5pm. Mostly sunny, with a high near 89. South wind 6 to 12 mph.
Chance Rain Showers
Lo 63 °F
A chance of rain showers. Mostly cloudy, with a low around 63. Southwest wind 6 to 10 mph. Chance of precipitation is 30%.
Chance Rain Showers
Hi 83 °F
A chance of rain showers. Partly sunny, with a high near 83. West wind 6 to 12 mph. Chance of precipitation is 30%.
Chance Rain Showers
Lo 52 °F
A chance of rain showers before 1am. Partly cloudy, with a low around 52. Northwest wind 7 to 10 mph. Chance of precipitation is 30%.
National Weather Service Boston / Norton, MA
000 FXUS61 KBOX 150115 AFDBOX Area Forecast Discussion National Weather Service Boston/Norton MA 915 PM EDT Sat May 14 2022 .SYNOPSIS... Warm and humid weather will continue through Monday. Expect a few showers tonight, then most of Sunday ends up dry aside from a brief afternoon shower or thunderstorm. A more widespread round of showers and thunderstorms is expected late Monday, especially across the interior as a cold front crosses the region. A return to cooler, but seasonable temperatures occurs Tuesday through Thursday. Warmer weather begins to return Friday with the potential for near record heat by next Saturday. && .NEAR TERM /UNTIL 6 AM SUNDAY MORNING/... 915 PM Update: No changes from earlier update. Dense fog has crept northward onto Islands and is expected to reach much of south coastal RI/MA overnight. Some question as to whether or not dense fog spreads farther north into PVD/PYM but high-res models don't bring it quite that far north. We'll leave the Dense Fog Advisory as is with this update. Showers are lifting north tonight ahead of very subtle short wave which is best seen around 850 mb. Instability is limited with fairly deep southerly flow but most areas will see at least some light rain showers overnight. Kept PoPs in line with consensus of high-res models. Forecast lows in 50s to mid 60s look good. && .SHORT TERM /6 AM SUNDAY MORNING THROUGH SUNDAY NIGHT/... .Tomorrow. Short-wave energy meanders over southern New England tomorrow supporting a wet/unsettled day. The air will continue to have a summer like feel with temperatures and dewpoints in the 70s and 60s respectively. Scattered showers continue into the afternoon hours as short-wave energy slow exits east. Modest instability will be in place to the tune of a few hundred J/Kg of CAPE. With weak-forcing for ascent associated with the short-wave energy aloft, there exists the potential for a few mid-late afternoon thunderstorms across the interior. Hi-res model guidance suggests that western MA/CT will have the best opportunity to see some thunderstorms tomorrow afternoon. Thunderstorm chances diminish further to the east. Deep- layer shear will be limited, not expecting any thunderstorms to become severe. .Tomorrow Night. Short-wave energy aloft finally exists east allowing for some partial clearing across southern New England tomorrow night. Deep- southwest flow continues to support a warm/humid air mass over the region. Winds weaken overnight, thus expecting more areas of dense fog to develop on Monday morning, especially along the south coast. Lows once again bottom out in the low 60s across the interior and low-mid 50s along the coast. && .LONG TERM /MONDAY THROUGH SATURDAY/... Highlights... * Warm Mon with a few strong-severe t-storms possible across interior MA/CT if activity arrives early enough * Cooler/Pleasant seasonable temps return Tue/Wed/Thu with perhaps a few diurnally driven showers Tue, but otherwise mainly dry * Potential for near record breaking heat into the 90s by next Sat? Details... Monday... The main concern on Monday will revolve around the potential for a few strong to severe thunderstorms later in the day/early evening hours across the interior. A rather warm and somewhat humid airmass for this time of year will be in place on Monday. The surface flow will turn more meridional than what we had today; so temps will not get quite as high. That being said it still will be warm and a bit humid for this time of year with highs mainly in the upper 70s to the lower 80s. It will be cooler near the south coast as southerly flow brings a modified marine airmass northward. While we may see a few spot showers Mon morning, dry weather will dominate along with partial sunshine. A rather potent shortwave/cold pool aloft will lift northeast later Mon afternoon & early evening. The mid level lapse rates are rather poor, which will keep the instability in check. That being said; the SPC SREF and other guidance show about 1000 to 1500 J/KG of Cape developing across interior MA/CT. In addition, 0-6 KM shear will be approaching 50 knots towards 00z across western MA & CT which is quite impressive. There are some timing issues and if the activity arrives early enough for a few strong to severe t-storms across the interior. Given rather poor mid level lapse rates and a likely advancing marine layer given southerly winds; an earlier arrival would increase the risk for a few severe t-storms across the interior. While a later arrival would limit this potential. We should have a better idea on this potential over the next 12 to 24 hours given will be in range of our high resolution CAM guidance. Main threat would be for localized strong to damaging wind gusts with hail being a secondary concern. Brief heavy rain and poor drainage street flooding would also be a concern. Meanwhile, across eastern MA and RI given the later arrival and an advancing marine layer may just looking at a few showers and perhaps a leftover rumble of thunder or two during the evening. Tuesday... A return to less humidity along with cooler/seasonable temps arrives Tue. We may have a few diurnally driven showers as an upper level shortwave/cold pool aloft crosses the region, but the vast majority of the day will be dry. High temps mainly between 70 and 75 with readings a few degrees cooler across the high terrain/portions of the coast, but a very nice day across the entire region. Wednesday and Thursday... A ridge of high pressure will cross the region Wed into Thu, bringing mainly dry weather with pleasant/seasonable temps. Low risk a few showers brief sneak up from the southwest with shortwave energy, but given west to northwest flow aloft think we pretty much stay dry. High temps mainly in the upper 60s to the lower 70s with comfortable humidity levels. Friday and Saturday... Upper level ridging across the southeast builds north Fri and Sat allowing height fields to rise across southern New England. It is still quite the ways off, but GEFS/EPS guidance showing the potential for near record heat arriving by next Saturday. Highs may be back into the 80s across portions of the region by Fri and perhaps into the 90s by Sat? The Ensemble situational awareness table from the ECMWF is indicating some upper level temperature fields to be outside the model/s climatology! In fact, the latest GFS/ECMWF operational runs indicate 850T around +20C and their 2 meter temperatures between 95 and 100 degrees Saturday afternoon! That is nearly a week out, so whether or not that comes to fruition remains to be seen. However, there certainly is a signal for at least the potential of record heat by next Sat with highs into the 90s. && .AVIATION /01Z SUNDAY THROUGH THURSDAY/... Low - less than 30 percent. Medium - 30 to 60 percent. High - greater than 60 percent. 00z TAF Update... Tonight ...High confidence in trends, less in details and timing. Ceilings deteriorate to IFR/LIFR through 06z mainly across RI/SE MA and after 06Z further northwest. Bulk of the fog/reduced vsbys will be across RI/SE MA. Fog will again be most dense closer to the coast. Additionally expecting scattered showers later this evening into the overnight hours. Light S winds 5 to 10 knots. Tomorrow...High confidence in trends, less in timing. LIFR/IFR ceilings and visibility gradually improve to MVFR-VFR during the late morning/early afternoon except for Cape/Islands and other areas near immediate coast where low clouds and fog will continue to impact or flirt with those areas all day. There will be a possibility for a few showers and isolated t-storms late in the day mainly across western MA and CT. South/southwest winds pick up to 10-15 knots by the afternoon with gusts to 20 knots possible. A sea breeze may impact portions of the immediate coast for a time. Tomorrow Night... MVFR ceilings across the interior with more IFR/LIFR ceilings and visibilities near the coast. Modest south/southwest winds continue. Saturday night.... LIFR/IFR become more widespread with widespread showers overspreading the region along with stratus. Light SSW winds prevail. Sunday... Any scattered morning showers give way to a mostly dry day. IFR/LIFR in areas of fog early, then improving to MVFR/VFR. KBOS TAF...High confidence in trends, moderate in timing. KBDL TAF...High confidence in trends, moderate in timing. Outlook /Monday through Thursday/... Tuesday: Mainly VFR, with local MVFR possible. Windy with local gusts up to 30 kt. Slight chance SHRA. Tuesday Night through Wednesday: VFR. Breezy. Wednesday Night: VFR. Thursday through Thursday Night: Mainly VFR, with local MVFR possible. Breezy. Slight chance SHRA. Friday: Breezy. && .MARINE... Low - less than 30 percent. Medium - 30 to 60 percent. High - greater than 60 percent. Tonight through tomorrow night Modest SSW winds continue to support a warm/humid air mass over the coastal waters through tomorrow night. Showers forecast tonight and tomorrow. Isolated thunderstorms will be possible tomorrow afternoon. Humid air mass will support persistent fog that will be locally dense at night and thinner during the day tomorrow. Outlook /Monday through Thursday/... Tuesday: Low risk for Small Craft Advisory winds with gusts up to 25 kt. Seas up to 5 ft. Tuesday Night through Wednesday: Winds less than 25 kt. Seas up to 5 ft. Wednesday Night: Winds less than 25 kt. Areas of seas approaching 5 ft. Thursday through Thursday Night: Winds less than 25 kt. Areas of seas approaching 5 ft. Slight chance of rain showers. Friday: Winds less than 25 kt. Seas up to 5 ft. && .BOX WATCHES/WARNINGS/ADVISORIES... CT...None. MA...Dense Fog Advisory until 10 AM EDT Sunday for MAZ020>024. RI...Dense Fog Advisory until 10 AM EDT Sunday for RIZ005>008. MARINE...None. && $$ SYNOPSIS...Frank/RM NEAR TERM...JWD SHORT TERM...RM LONG TERM...Frank AVIATION...Frank/RM MARINE...Frank/RM
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.
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No alerts/warnings active for Southeast Middlesex County.
Alerts active nearby in: Barnstable, MA; Bristol, RI; Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket; Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island; Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary; Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm; Dukes, MA; Eastern Essex, MA; Eastern Kent, RI; Eastern Norfolk, MA; Eastern Plymouth, MA; Nantucket, MA; Newport, RI; Southeast Providence, RI; Southern Bristol, MA; Southern Plymouth, MA; Suffolk, MA; Washington, RI