Fire Weather Planning Forecast for Southern New England
National Weather Service Boston/Norton MA
502 AM EDT Wed Aug 26 2026
.DISCUSSION...
Dry weather continues today with W winds becoming more SW during
the day. A frontal system arrives Thursday with the potential for
rounds of heavy rain and thunderstorms.
Minimum relative humidity values today and Thursday expected to
range between 50 and 70 percent, with higher values towards the
outer Cape and the Islands.
.Outlook...Thursday night through Monday...
Cold front slows near the region Friday with periods of showers
possible. At the moment the weekend looks mainly dry with an
outside chance for some additional rainfall Sunday.
MAZ015-
Southeast Middlesex MA-
Including the city of Cambridge
502 AM EDT Wed Aug 26 2026
Today Tonight Thu
Cloud Cover Mclear Pcldy Pcldy
Precip Type None None None
Chance Precip (%) 10
Chance of Thunder (%) 0 0 0
Temp (24h trend) 82 (+2) 63 (+3) 85
RH % (24h trend) 51 (+5) 93 (-7) 53
20ft Wnd AM(mph) Lgt/Var Lgt/Var
20ft Wnd PM(mph) Lgt/Var Lgt/Var S 8 G17
Precip Amount 0.00 0.00 0.00
Precip Duration
Precip Begin
Precip End
Mixing Hgt (ft-AGL) 6480 410 4930
Transport Wnd (kts) SW 6 SW 7 S 16
Vent Rate (kt-ft) 38880 2870 78880
Max ADI Early 24 Fair 22 Fair 72 Good
Max ADI Late 45 Gen Good 4 Very Poor 58 Gen Good
Max LVORI Early 2 6 1
Max LVORI Late 2 6 1
Min Vsby Early 9 9 8
Min Vsby Late 9 7 9
Sunshine Hours N/A N/A N/A
CWR 0 0 0
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy. Lows in the upper 60s. South
winds 5 to 10 mph.
.FRIDAY...Partly sunny with a chance of showers. Highs in the
lower 80s. Southwest winds around 5 mph.
.FRIDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the lower 60s. Northwest winds around 5 mph.
.SATURDAY...Mostly sunny. Highs in the upper 70s. North winds
around 5 mph, becoming east in the afternoon.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows in the lower 60s.
Highs in the mid 80s. Southwest winds around 5 mph.
.SUNDAY NIGHT THROUGH TUESDAY...Partly cloudy. Lows in the upper
60s. Highs in the mid 80s. East winds 5 to 10 mph.