Charlestown, MA Weather Forecast
Local 7-day forecast
Rain Showers Likely
Track current conditions, temperature changes, wind, and the full daily outlook for Charlestown, MA in one place.
Rain showers likely and patchy fog before 4pm. Mostly cloudy, with a high near 79. Southeast wind 3 to 7 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
Local Weather Overview
This forecast page for Charlestown, 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: Aug 22, 2026 5:25 AM EDT.
The active forecast window currently covers Aug 23 to Aug 28, 2026 for Charlestown, MA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 23 to Aug 28, 2026
- Latest sync
- Aug 22, 2026 5:25 AM EDT
- Forecast office
- BOX
- Source
- NOAA / NWS
Daily Outlook
This Week in Charlestown
Wednesday looks like the warmest upcoming period in Charlestown at 81 degrees F.
Monday Night is the coolest period ahead with temperatures near 57 degrees F.
The strongest winds are forecast for Monday at about 2 to 10 mph SW.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 22, 2026 5:25 AM 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 slight chance of rain showers before 11pm. Mostly cloudy, with a low around 63. Southwest wind 2 to 7 mph. Chance of precipitation is 20%.
Sunny, with a high near 80. Southwest wind 2 to 10 mph, with gusts as high as 21 mph.
Mostly clear, with a low around 57. Southwest wind 3 to 9 mph.
Sunny, with a high near 78. West wind 3 to 9 mph.
Mostly clear, with a low around 57. West wind 2 to 8 mph.
Sunny, with a high near 81. West wind 2 to 7 mph.
Mostly clear, with a low around 61. Southwest wind 1 to 6 mph.
A slight chance of rain showers after 4pm. Mostly sunny, with a high near 81. Southwest wind 1 to 8 mph.
A chance of rain showers. Mostly cloudy, with a low around 64. South wind 2 to 7 mph. Chance of precipitation is 40%.
A chance of rain showers. Partly sunny, with a high near 81. South wind 2 to 7 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Sunday
Aug 23
|
Rain Showers Likely
|
79°F |
3 to 7 mph
SE
|
|
Sunday Night
Aug 23
|
Slight Chance Rain Showers then Mostly Cloudy
|
63°F |
2 to 7 mph
SW
|
|
Monday
Aug 24
|
Sunny
|
80°F |
2 to 10 mph
SW
|
|
Monday Night
Aug 24
|
Mostly Clear
|
57°F |
3 to 9 mph
SW
|
|
Tuesday
Aug 25
|
Sunny
|
78°F |
3 to 9 mph
W
|
|
Tuesday Night
Aug 25
|
Mostly Clear
|
57°F |
2 to 8 mph
W
|
|
Wednesday
Aug 26
|
Sunny
|
81°F |
2 to 7 mph
W
|
|
Wednesday Night
Aug 26
|
Mostly Clear
|
61°F |
1 to 6 mph
SW
|
|
Thursday
Aug 27
|
Mostly Sunny then Slight Chance Rain Showers
|
81°F |
1 to 8 mph
SW
|
|
Thursday Night
Aug 27
|
Chance Rain Showers
|
64°F |
2 to 7 mph
S
|
|
Friday
Aug 28
|
Chance Rain Showers
|
81°F |
2 to 7 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Charlestown.