Fire Weather Planning Forecast for Southern New England
National Weather Service Boston/Norton MA
409 PM EDT Mon Oct 12 2026
.DISCUSSION...
A backdoor cold front dropping southward from northern New
England will bring increasingly overcast conditions, northeast
onshore breezes, rain and cool temperatures on Tuesday.
Lowest relative humidities should remain above 70 percent on
Tuesday.
.Outlook...Wednesday through Saturday...
Low pressure area moves through northern New England on
Wednesday, bringing warming temperatures into the low to mid 70s
along with southerly winds. Stronger northwest winds develop
Wednesday night into Thursday, with a cooldown expected.
Monitoring a stronger storm Friday into Saturday, which could
bring wetting rainfall Friday and strong northwest winds on
Saturday.
MAZ015-
Southeast Middlesex MA-
Including the city of Cambridge
409 PM EDT Mon Oct 12 2026
Tonight Tue Tue Night Wed
Cloud Cover Pcldy Mcldy Mcldy Pcldy
Precip Type Showers Showers Showers None
Chance Precip (%) 30 60 60
Chance of Thunder (%) 0 0 0 0
Temp (24h trend) 50 (+1) 63 (-7) 58 74
RH % (24h trend) 100 (0) 93 (+28) 100 66
20ft Wnd AM(mph) E 6 W 6
20ft Wnd PM(mph) Lgt/Var SE 5 Lgt/Var W 7
Precip Amount 0.00 0.08 0.06 0.00
Precip Duration 4 2
Precip Begin 6 AM Continuing
Precip End Continuing 1 AM
Mixing Hgt (ft-AGL) 420 1560 440 2880
Transport Wnd (kts) NW 8 E 12 SW 9 W 12
Vent Rate (kt-ft) 3360 18720 3960 34560
Max ADI Early 5 Very Poor 23 Fair 7 Poor 36 Fair
Max ADI Late 17 Gen Poor 20 Gen Poor 9 Poor 42 Gen Good
Max LVORI Early 6 5 8 3
Max LVORI Late 6 5 8 3
Min Vsby Early 9 3 Fog 5 Fog 9
Min Vsby Late 4 Fog 4 Fog 5 Fog 9
Sunshine Hours N/A N/A N/A N/A
CWR 30 30 0
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 50s.
Northwest winds 5 to 10 mph.
.THURSDAY...Sunny. Highs in the lower 60s. Northwest winds 5 to
10 mph.
.THURSDAY NIGHT...Partly cloudy. Lows in the mid 40s. North winds
around 5 mph, becoming southeast after midnight.
.FRIDAY...Showers. Highs in the lower 60s. South winds 5 to
10 mph.
.FRIDAY NIGHT...Showers. Lows in the lower 40s. West winds 10 to
15 mph.
.SATURDAY...Mostly sunny. Cooler. Highs in the lower 50s.
Northwest winds 10 to 15 mph.
.SATURDAY NIGHT...Mostly clear. Lows in the mid 30s. West winds
10 to 15 mph.
.SUNDAY AND SUNDAY NIGHT...Partly cloudy. Lows in the upper 30s.
Highs in the lower 50s. Southwest winds 5 to 10 mph.
.MONDAY...Mostly sunny. Highs in the lower 60s. Southwest winds
5 to 10 mph.