Fire Weather Planning Forecast for Southern New England
National Weather Service Boston/Norton MA
410 PM EDT Thu Jul 16 2026
.DISCUSSION... Dry weather expected to persist into Saturday
morning. Showers and thunderstorms then become increasingly
likely from west to east Saturday afternoon. Most of the rainfall
is expected Saturday night.
Gusty winds this afternoon should subside after sunset. Not as
gusty Saturday, outside of an isolated stronger thunderstorm.
Lowest relative humidity values Friday expected between
30-40 percent, with higher values between 45 and 60 percent
across the Cape and Islands. For Saturday, anticipating lowest
relative humidity values between 50-70 percent across southern
New England.
.OUTLOOK...Sunday through Tuesday...
High pressure should briefly lead to dry weather Sunday and
Monday. Another round of showers and thunderstorms is possible
towards Tuesday afternoon.
MAZ015-
Southeast Middlesex MA-
Including the city of Cambridge
410 PM EDT Thu Jul 16 2026
Tonight Fri Fri Night Sat
Cloud Cover Pcldy Mclear Mclear Pcldy
Precip Type None None None Tstms
Chance Precip (%) 20 40
Chance of Thunder (%) 0 0 0 20
Temp (24h trend) 56 (-8) 85 (-5) 59 88
RH % (24h trend) 81 (-12) 30 (+2) 90 46
20ft Wnd AM(mph) NW 7 Lgt/Var
20ft Wnd PM(mph) NW 7 G21 W 7 Lgt/Var SW 11 G23
Precip Amount 0.00 0.00 0.00 0.09
Precip Duration 1
Precip Begin 2 PM
Precip End Continuing
Mixing Hgt (ft-AGL) 430 6910 370 5110
Transport Wnd (kts) NW 10 NW 12 W 4 SW 23
Vent Rate (kt-ft) 4300 82920 1480 117530
Max ADI Early 84 Good 79 Good 80 Good 88 Good
Max ADI Late 11 Poor 105 Very Good7 Poor 76 Good
Max LVORI Early 4 1 4 3
Max LVORI Late 4 1 4 3
Min Vsby Early 3 Smoke 9 9 9
Min Vsby Late 9 9 9 9
Sunshine Hours N/A N/A N/A N/A
CWR 0 0 0 30
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.SATURDAY NIGHT...Showers. Lows in the upper 60s. Southwest winds
10 to 15 mph.
.SUNDAY...Sunny. Highs in the mid 80s. Northwest winds 5 to
10 mph.
.SUNDAY NIGHT...Clear. Lows in the lower 60s. Northwest winds
around 5 mph.
.MONDAY...Sunny. Highs in the mid 80s. Northwest winds around
5 mph, becoming south around 5 mph in the afternoon.
.MONDAY NIGHT...Partly cloudy. Lows in the mid 60s. South winds
around 5 mph.
.TUESDAY...Partly sunny with a chance of showers and
thunderstorms. Highs in the mid 80s. South winds 5 to 10 mph.
.TUESDAY NIGHT...Mostly cloudy with showers likely and a chance
of thunderstorms. Lows in the upper 60s. Southwest winds 5 to
10 mph.
.WEDNESDAY AND WEDNESDAY NIGHT...Mostly cloudy with showers
likely. Lows in the upper 60s. Highs in the mid 80s. West winds
5 to 10 mph.
.THURSDAY...Mostly sunny with a chance of showers. Highs in the
lower 80s. West winds around 5 mph.