Cornwall, CT Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Cornwall, CT in one place.
Sunny, with a high near 80. Northwest wind around 3 mph.
Local Weather Overview
This forecast page for Cornwall, CT 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 28, 2026 4:25 AM EDT.
The active forecast window currently covers Aug 29 to Sep 3, 2026 for Cornwall, CT.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 29 to Sep 3, 2026
- Latest sync
- Aug 28, 2026 4:25 AM EDT
- Forecast office
- ALY
- Source
- NOAA / NWS
Daily Outlook
This Week in Cornwall
Sunday looks like the warmest upcoming period in Cornwall at 83 degrees F.
Saturday Night is the coolest period ahead with temperatures near 59 degrees F.
The strongest winds are forecast for Sunday at about 0 to 6 mph SW.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 28, 2026 4:25 AM EDT
- Coverage
- 6 days
- Time zone
- America/New_York
- Forecast office
- ALY
- Radar station
- KENX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly clear, with a low around 59. Northwest wind around 1 mph.
Sunny, with a high near 83.
Partly cloudy, with a low around 64.
A slight chance of rain showers between 8am and 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 82. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 8pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Chance of precipitation is 30%.
A chance of showers and thunderstorms. Mostly cloudy, with a high near 83. Chance of precipitation is 50%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
A chance of rain showers before 2pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 81. Chance of precipitation is 60%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.
A chance of rain showers before 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 81.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Aug 29
|
Sunny
|
80°F |
3 mph
NW
|
|
Saturday Night
Aug 29
|
Mostly Clear
|
59°F |
1 mph
NW
|
|
Sunday
Aug 30
|
Sunny
|
83°F |
0 to 6 mph
SW
|
|
Sunday Night
Aug 30
|
Partly Cloudy
|
64°F |
0 to 3 mph
SW
|
|
Monday
Aug 31
|
Slight Chance Rain Showers then Chance Showers And Thunderstorms
|
82°F |
2 mph
SW
|
|
Monday Night
Aug 31
|
Chance Showers And Thunderstorms
|
65°F |
1 mph
SW
|
|
Tuesday
Sep 1
|
Chance Showers And Thunderstorms
|
83°F |
3 mph
S
|
|
Tuesday Night
Sep 1
|
Showers And Thunderstorms Likely
|
65°F |
2 mph
SE
|
|
Wednesday
Sep 2
|
Showers And Thunderstorms Likely
|
81°F |
2 to 6 mph
SE
|
|
Wednesday Night
Sep 2
|
Showers And Thunderstorms Likely
|
64°F |
3 mph
SE
|
|
Thursday
Sep 3
|
Chance Rain Showers
|
81°F |
2 to 6 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Cornwall.
