NWS & WXSIM Forecasts


National Weather Service Forecast for: Lowell, MA
Issued by: National Weather Service Boston / Norton, MA
Updated: Apr/21/2026 3:59am

Lowell, MA
 
Today

Today: Sunny
Sunny
Wednesday

Wednesday: Light Rain Likely
Light Rain Likely
Thursday

Thursday: Slight Chance Light Rain then Slight Chance Rain Showers
Slight Chance Light Rain then Slight Chance Rain Showers
Friday

Friday: Mostly Sunny
Mostly Sunny
Saturday

Saturday: Mostly Sunny
Mostly Sunny
Sunday

Sunday: Partly Sunny
Partly Sunny
Monday

Monday: Partly Sunny
Partly Sunny
 
Hi 50 °F Hi 46 °F Hi 57 °F Hi 57 °F Hi 57 °F Hi 58 °F Hi 61 °F  
 
Tonight

Tonight: Mostly Cloudy
Mostly Cloudy
Wednesday
Night
Wednesday Night: Chance Light Rain
Chance Light Rain
Thursday
Night
Thursday Night: Partly Cloudy
Partly Cloudy
Friday
Night
Friday Night: Partly Cloudy
Partly Cloudy
Saturday
Night
Saturday Night: Slight Chance Rain Showers
Slight Chance Rain Showers
Sunday
Night
Sunday Night: Slight Chance Rain Showers
Slight Chance Rain Showers
Monday
Night
Monday Night: Slight Chance Rain Showers
Slight Chance Rain Showers
 
Lo 34 °F Lo 38 °F Lo 38 °F Lo 35 °F Lo 38 °F Lo 39 °F Lo 41 °F  

 

Today
 
Sunny, with a high near 50. Southwest wind 2 to 6 mph.
Tonight
 
Mostly cloudy, with a low around 34. South wind around 7 mph.
Wednesday
 
Rain likely. Cloudy, with a high near 46. South wind around 8 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
Wednesday Night
 
A chance of rain. Mostly cloudy, with a low around 38. South wind 1 to 6 mph. Chance of precipitation is 30%.
Thursday
 
A slight chance of rain before 8am, then a slight chance of rain showers between 11am and 4pm. Partly sunny, with a high near 57. Northwest wind 2 to 10 mph. Chance of precipitation is 20%.
Thursday Night
 
Partly cloudy, with a low around 38. Northwest wind 2 to 8 mph.
Friday
 
Mostly sunny, with a high near 57. North wind around 6 mph.
Friday Night
 
Partly cloudy, with a low around 35. Northeast wind around 5 mph.
Saturday
 
Mostly sunny, with a high near 57. Northeast wind 2 to 6 mph.
Saturday Night
 
A slight chance of rain showers between 7pm and 5am. Mostly cloudy, with a low around 38. South wind around 5 mph.
Sunday
 
Partly sunny, with a high near 58. Northeast wind 2 to 7 mph.
Sunday Night
 
A slight chance of rain showers between 8pm and 2am. Mostly cloudy, with a low around 39. East wind around 5 mph.
Monday
 
Partly sunny, with a high near 61. Northeast wind 2 to 7 mph.
Monday Night
 
A slight chance of rain showers after 8pm. Partly cloudy, with a low around 41. East wind around 5 mph.

 

Forecast from NOAA-NWS for Lowell, MA.

Technical Forecast Discussion



WXSIM Forecast for: Lowell
Issued by: Lowell Highlands Weather
Updated: Monday, 20-Apr-2026 10:51 pm
 
Rest of
tonight
Fog
Fog
Tuesday

Sunny
Sunny
Tuesday
night
Rain and Snow
Rain and Snow
Wednesday

Rain and Snow
Rain and Snow
Wednesday
night
Chance rain
Chance rain
Thursday

Fog a.m.
Fog a.m.
Thursday
night
Fog late
Fog late
<.1 in. .1 in. <.1 in.
Low 28°F High 52°F Low 33°F High 45°F Low 38°F High 57°F Low 33°F
N
3
mph
NNW→SW
4
mph
S
6
mph
S
6
mph
SSW
4
mph
WNW
7-19→12-21
mph
NNW
6-17
mph
UV: 5
 Medium 
UV: 2
 Low 
UV: 4
 Medium 

 

Rest of tonight
 
Clear. Patchy light fog. Cold. Low 28°F. Wind chill as low as 27. Wind north around 3 mph.
Tuesday
 
Sunny. High 52°F. UV index up to 5. Wind north-northwest around 4 mph in the morning, becoming southwest in the afternoon.
Tuesday night
 
Partly cloudy in the evening, becoming cloudy after midnight. A chance of a mix of snow and rain after midnight. Cold. Low 33°F. Wind south around 6 mph. Chance of precipitation 30 percent. Precipitation (liquid equivalent) mostly less than a tenth of an inch. No snow accumulation expected.
Wednesday
 
Dense overcast in the morning, becoming cloudy in the afternoon. A slight chance of a mix of rain and snow in the morning, then a chance of rain in the afternoon. Cold. High 45°F. UV index up to 2. Wind south around 6 mph. Chance of precipitation 50 percent. Precipitation (liquid equivalent) mostly around a tenth of an inch. No snow accumulation expected.
Wednesday night
 
Cloudy. Patchy light fog. A chance of rain. Low 38°F. Wind south-southwest around 4 mph. Chance of precipitation 40 percent. Precipitation mostly less than a tenth of an inch.
Thursday
 
Partly to mostly cloudy in the morning, becoming partly cloudy in the afternoon. Patchy light fog in the morning. High 57°F. UV index up to 4. Wind west-northwest around 7 mph, gusting to 19 mph, in the morning, becoming 12 mph, gusting to 21 mph, in the afternoon.
Thursday night
 
Mostly clear in the evening, becoming fair after midnight. Patchy light fog after midnight. Cold. Low 33°F. Wind north-northwest around 6 mph, gusting to 17 mph.

WXSIM forecast formatting script by Saratoga-Weather.org.