Chelmsford, MA Weather Forecast
Local 7-day forecast
Mostly Sunny then Slight Chance Rain Showers
Track current conditions, temperature changes, wind, and the full daily outlook for Chelmsford, MA in one place.
A slight chance of rain showers after 4pm. Mostly sunny, with a high near 71. Northwest wind 5 to 8 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Chelmsford, MA is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: May 30, 2026 6:32 PM EDT.
The active forecast window currently covers May 31 to Jun 5, 2026 for Chelmsford, MA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- May 31 to Jun 5, 2026
- Latest sync
- May 30, 2026 6:32 PM EDT
- Forecast office
- BOX
- Source
- NOAA / NWS
Daily Outlook
This Week in Chelmsford
Friday looks like the warmest upcoming period in Chelmsford at 87 degrees F.
Monday Night is the coolest period ahead with temperatures near 45 degrees F.
The strongest winds are forecast for Wednesday at about 5 to 9 mph NE.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- May 30, 2026 6:32 PM EDT
- Coverage
- 6 days
- Time zone
- America/New_York
- Forecast office
- BOX
- Radar station
- KBOX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of rain showers. Mostly cloudy, with a low around 49. West wind 2 to 6 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Rain showers likely. Partly sunny, with a high near 65. North wind 3 to 7 mph. Chance of precipitation is 60%.
A slight chance of rain showers before 8pm. Mostly clear, with a low around 45. North wind 1 to 6 mph. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms between 2pm and 3pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 70. North wind 2 to 6 mph. Chance of precipitation is 30%.
A chance of showers and thunderstorms. Partly cloudy, with a low around 48. Northeast wind around 5 mph. Chance of precipitation is 30%.
A slight chance of rain showers before 5pm. Mostly sunny, with a high near 69. Northeast wind 5 to 9 mph.
Partly cloudy, with a low around 50. North wind 3 to 7 mph.
Mostly sunny, with a high near 78. Northwest wind around 7 mph.
Partly cloudy, with a low around 57. Northwest wind around 6 mph.
Mostly sunny, with a high near 87. West wind 5 to 8 mph.
Partly cloudy, with a low around 62. Southwest wind around 7 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Sunday
May 31
|
Mostly Sunny then Slight Chance Rain Showers
|
71°F |
5 to 8 mph
NW
|
|
Sunday Night
May 31
|
Chance Rain Showers
|
49°F |
2 to 6 mph
W
|
|
Monday
Jun 1
|
Rain Showers Likely
|
65°F |
3 to 7 mph
N
|
|
Monday Night
Jun 1
|
Slight Chance Rain Showers then Mostly Clear
|
45°F |
1 to 6 mph
N
|
|
Tuesday
Jun 2
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
70°F |
2 to 6 mph
N
|
|
Tuesday Night
Jun 2
|
Chance Showers And Thunderstorms
|
48°F |
5 mph
NE
|
|
Wednesday
Jun 3
|
Slight Chance Rain Showers
|
69°F |
5 to 9 mph
NE
|
|
Wednesday Night
Jun 3
|
Partly Cloudy
|
50°F |
3 to 7 mph
N
|
|
Thursday
Jun 4
|
Mostly Sunny
|
78°F |
7 mph
NW
|
|
Thursday Night
Jun 4
|
Partly Cloudy
|
57°F |
6 mph
NW
|
|
Friday
Jun 5
|
Mostly Sunny
|
87°F |
5 to 8 mph
W
|
|
Friday Night
Jun 5
|
Partly Cloudy
|
62°F |
7 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Chelmsford.
