NWS & WXSIM Forecasts


National Weather Service Forecast for: Lowell, MA
Issued by: National Weather Service Boston / Norton, MA
Updated: Sep/18/2026 3:02am

Lowell, MA
 
  Friday

Friday: Patchy Fog then Sunny
Patchy Fog then Sunny
Saturday

Saturday: Mostly Sunny
Mostly Sunny
Sunday

Sunday: Rain Showers Likely
Rain Showers Likely
Monday

Monday: Chance Rain Showers
Chance Rain Showers
Tuesday

Tuesday: Chance Rain Showers
Chance Rain Showers
Wednesday

Wednesday: Partly Sunny
Partly Sunny
Thursday

Thursday: Chance Rain Showers
Chance Rain Showers
  Hi 78 °F Hi 67 °F Hi 65 °F Hi 65 °F Hi 60 °F Hi 61 °F Hi 62 °F
 
Overnight

Overnight: Patchy Fog
Patchy Fog
Friday
Night
Friday Night: Partly Cloudy
Partly Cloudy
Saturday
Night
Saturday Night: Partly Cloudy
Partly Cloudy
Sunday
Night
Sunday Night: Rain Showers
Rain Showers
Monday
Night
Monday Night: Slight Chance Rain Showers
Slight Chance Rain Showers
Tuesday
Night
Tuesday Night: Slight Chance Rain Showers then Mostly Cloudy
Slight Chance Rain Showers then Mostly Cloudy
Wednesday
Night
Wednesday Night: Slight Chance Rain Showers
Slight Chance Rain Showers
 
Lo 65 °F Lo 47 °F Lo 47 °F Lo 53 °F Lo 49 °F Lo 48 °F Lo 47 °F  

 

Overnight
 
Patchy fog. Mostly cloudy, with a low around 65. Northwest wind around 2 mph.
Friday
 
Patchy fog before 8am. Sunny, with a high near 78. Northwest wind 2 to 9 mph.
Friday Night
 
Partly cloudy, with a low around 47. North wind 3 to 8 mph.
Saturday
 
Mostly sunny, with a high near 67. Northeast wind around 3 mph.
Saturday Night
 
Partly cloudy, with a low around 47. Southeast wind around 3 mph.
Sunday
 
Rain showers likely after 11am. Mostly cloudy, with a high near 65. Southeast wind 1 to 5 mph. Chance of precipitation is 60%.
Sunday Night
 
Rain showers likely before 8pm, then rain showers and patchy fog. Cloudy, with a low around 53. Northeast wind around 3 mph. Chance of precipitation is 80%.
Monday
 
A chance of rain showers. Partly sunny, with a high near 65. Northeast wind 3 to 7 mph. Chance of precipitation is 30%.
Monday Night
 
A slight chance of rain showers. Partly cloudy, with a low around 49. Northeast wind 2 to 7 mph.
Tuesday
 
A chance of rain showers. Mostly cloudy, with a high near 60. Northeast wind around 9 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Tuesday Night
 
A slight chance of rain showers before 10pm. Mostly cloudy, with a low around 48. Northeast wind 3 to 8 mph.
Wednesday
 
Partly sunny, with a high near 61. Northeast wind 8 to 12 mph, with gusts as high as 25 mph.
Wednesday Night
 
A slight chance of rain showers. Partly cloudy, with a low around 47. Northeast wind 5 to 9 mph.
Thursday
 
A chance of rain showers. Partly sunny, with a high near 62. Northeast wind around 9 mph, with gusts as high as 21 mph.

 

Forecast from NOAA-NWS for Lowell, MA.

Technical Forecast Discussion



WXSIM Forecast for: Lowell
Issued by: Lowell Highlands Weather
Updated: Thursday, 17-Sep-2026 10:51 pm
 
Rest of
tonight
Chance rain
Chance rain
Friday

Fog a.m.
Fog a.m.
Friday
night
Fog late
Fog late
Saturday

Fog a.m.
Fog a.m.
Saturday
night
Partly Cloudy
Partly Cloudy
Sunday

Chance rain
Chance rain
Sunday
night
Rain likely
Rain likely
<.1 in. <.1 in. .25 in.
Low 67°F High 80°F Low 55°F High 72°F Low 52°F High 70°F Low 58°F
W
3
mph
NW
5-16→8-17
mph
NW
7-16
mph
N→ESE
4
mph
SSE
3
mph
S
4
mph
SE→NE
3
mph
UV: 6
 High 
UV: 6
 High 
UV: 3
 Medium 

 

Rest of tonight
 
Cloudy. Patchy light fog. A chance of rain. Warm. Low 67°F. Wind west around 3 mph. Chance of precipitation 30 percent. Precipitation mostly less than a tenth of an inch.
Friday
 
Partly cloudy in the morning, becoming mostly sunny in the afternoon. Patchy light fog in the morning. Warm. High 80°F. UV index up to 6. Wind northwest around 5 mph, gusting to 16 mph, in the morning, becoming 8 mph, gusting to 17 mph, in the afternoon.
Friday night
 
Fair to partly cloudy in the evening, becoming fair after midnight. Patchy light fog after midnight. Low 55°F. Wind northwest around 7 mph, gusting to 16 mph.
Saturday
 
Mostly sunny in the morning, becoming sunny in the afternoon. Patchy light fog in the morning. High 72°F. UV index up to 6. Wind north around 4 mph in the morning, becoming east-southeast in the afternoon.
Saturday night
 
Mostly clear in the evening, becoming fair to partly cloudy after midnight. Low 52°F. Wind south-southeast around 3 mph.
Sunday
 
Partly to mostly cloudy in the morning, becoming dense overcast in the afternoon. A slight chance of rain in the afternoon. High 70°F. UV index up to 3. Wind south around 4 mph. Chance of precipitation 30 percent. Precipitation mostly less than a tenth of an inch.
Sunday night
 
Dense overcast. Patchy light fog. Rain likely. Low 58°F. Wind southeast around 3 mph in the evening, becoming northeast after midnight. Chance of precipitation 60 percent. Precipitation mostly around a quarter of an inch.

WXSIM forecast formatting script by Saratoga-Weather.org.