National Weather Service Forecast for: Arlington MA
Issued by: National Weather Service Norton, MA
Updated: 12:43 am EDT Jul 7, 2025
 
Overnight

Overnight: Mostly clear, with a low around 72. Southwest wind around 8 mph.
Mostly Clear


Monday

Monday: A slight chance of showers between 2pm and 4pm.  Partly sunny and hot, with a high near 90. Heat index values as high as 97. Southwest wind 7 to 11 mph.  Chance of precipitation is 20%.
Partly Sunny
then Slight
Chance
Showers
Monday
Night
Monday Night: A chance of showers before 4am, then a chance of showers and thunderstorms between 4am and 5am, then showers likely and possibly a thunderstorm after 5am.  Patchy fog after 4am.  Otherwise, mostly cloudy, with a low around 75. Southwest wind 6 to 9 mph.  Chance of precipitation is 60%.
Chance
Showers then
Showers
Likely and
Patchy Fog
Tuesday

Tuesday: Showers likely and possibly a thunderstorm before 11am, then a chance of showers and thunderstorms between 11am and 3pm, then showers likely and possibly a thunderstorm after 3pm.  Patchy fog before 7am.  Otherwise, partly sunny and hot, with a high near 92. Heat index values as high as 98. West wind 5 to 7 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers
Likely and
Patchy Fog

Tuesday
Night
Tuesday Night: Showers likely and possibly a thunderstorm before 7pm, then a chance of showers and thunderstorms after 7pm.  Mostly cloudy, with a low around 69. Northeast wind 3 to 5 mph.  Chance of precipitation is 60%.
Showers
Likely

Wednesday

Wednesday: A chance of showers, with thunderstorms also possible after 2pm.  Mostly cloudy, with a high near 76. East wind around 6 mph.  Chance of precipitation is 30%.
Chance
Showers

Wednesday
Night
Wednesday Night: Mostly cloudy, with a low around 66. East wind around 5 mph becoming calm  in the evening.
Mostly Cloudy


Thursday

Thursday: A chance of showers after 1pm.  Mostly cloudy, with a high near 76. Northeast wind 3 to 7 mph.  Chance of precipitation is 30%.
Cloudy then
Chance
Showers

Thursday
Night
Thursday Night: A chance of showers.  Cloudy, with a low around 65. East wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 40%.
Chance
Showers

Lo 72 °F Hi 90 °F Lo 75 °F Hi 92 °F Lo 69 °F Hi 76 °F Lo 66 °F Hi 76 °F Lo 65 °F

Heat Advisory
 

Overnight
 
Mostly clear, with a low around 72. Southwest wind around 8 mph.
Monday
 
A slight chance of showers between 2pm and 4pm. Partly sunny and hot, with a high near 90. Heat index values as high as 97. Southwest wind 7 to 11 mph. Chance of precipitation is 20%.
Monday Night
 
A chance of showers before 4am, then a chance of showers and thunderstorms between 4am and 5am, then showers likely and possibly a thunderstorm after 5am. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 75. Southwest wind 6 to 9 mph. Chance of precipitation is 60%.
Tuesday
 
Showers likely and possibly a thunderstorm before 11am, then a chance of showers and thunderstorms between 11am and 3pm, then showers likely and possibly a thunderstorm after 3pm. Patchy fog before 7am. Otherwise, partly sunny and hot, with a high near 92. Heat index values as high as 98. West wind 5 to 7 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
 
Showers likely and possibly a thunderstorm before 7pm, then a chance of showers and thunderstorms after 7pm. Mostly cloudy, with a low around 69. Northeast wind 3 to 5 mph. Chance of precipitation is 60%.
Wednesday
 
A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 76. East wind around 6 mph. Chance of precipitation is 30%.
Wednesday Night
 
Mostly cloudy, with a low around 66. East wind around 5 mph becoming calm in the evening.
Thursday
 
A chance of showers after 1pm. Mostly cloudy, with a high near 76. Northeast wind 3 to 7 mph. Chance of precipitation is 30%.
Thursday Night
 
A chance of showers. Cloudy, with a low around 65. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.
Friday
 
A chance of showers before 11am. Mostly cloudy, with a high near 77. East wind 5 to 7 mph. Chance of precipitation is 30%.
Friday Night
 
Mostly cloudy, with a low around 65. East wind around 5 mph becoming calm in the evening.
Saturday
 
Partly sunny, with a high near 80. East wind 3 to 7 mph.
Saturday Night
 
Partly cloudy, with a low around 66. East wind around 6 mph becoming calm in the evening.
Sunday
 
Partly sunny, with a high near 80. Southeast wind 3 to 8 mph.

 

Forecast from NOAA-NWS for Arlington MA.