Cornwall, CT Weather Forecast
Local 7-day forecast
Partly Sunny then Slight Chance Rain Showers
Track current conditions, temperature changes, wind, and the full daily outlook for Cornwall, CT in one place.
A slight chance of rain showers between 3pm and 4pm. Partly sunny, with a high near 71. South wind 0 to 8 mph. Chance of precipitation is 20%.
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: Oct 12, 2026 6:30 AM EDT.
The active forecast window currently covers Oct 13 to Oct 18, 2026 for Cornwall, CT.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 13 to Oct 18, 2026
- Latest sync
- Oct 12, 2026 6:30 AM EDT
- Forecast office
- ALY
- Source
- NOAA / NWS
Daily Outlook
This Week in Cornwall
Wednesday looks like the warmest upcoming period in Cornwall at 74 degrees F.
Saturday Night is the coolest period ahead with temperatures near 31 degrees F.
The strongest winds are forecast for Saturday at about 15 mph NW.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 12, 2026 6:30 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
A slight chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 61. South wind 3 to 7 mph. Chance of precipitation is 20%.
Mostly sunny, with a high near 74.
Partly cloudy, with a low around 51.
Mostly sunny, with a high near 64.
Rain showers likely after 8pm. Mostly cloudy, with a low around 47. Chance of precipitation is 60%.
Rain showers. Mostly cloudy, with a high near 66. Chance of precipitation is 80%.
Rain showers likely before 2am. Mostly cloudy, with a low around 38. Chance of precipitation is 60%.
Mostly sunny, with a high near 50.
Partly cloudy, with a low around 31.
Sunny, with a high near 55.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Oct 13
|
Partly Sunny then Slight Chance Rain Showers
|
71°F |
0 to 8 mph
S
|
|
Tuesday Night
Oct 13
|
Slight Chance Showers And Thunderstorms
|
61°F |
3 to 7 mph
S
|
|
Wednesday
Oct 14
|
Mostly Sunny
|
74°F |
6 mph
W
|
|
Wednesday Night
Oct 14
|
Partly Cloudy
|
51°F |
5 mph
NW
|
|
Thursday
Oct 15
|
Mostly Sunny
|
64°F |
3 to 7 mph
N
|
|
Thursday Night
Oct 15
|
Rain Showers Likely
|
47°F |
0 to 5 mph
E
|
|
Friday
Oct 16
|
Rain Showers
|
66°F |
6 to 9 mph
SW
|
|
Friday Night
Oct 16
|
Rain Showers Likely
|
38°F |
8 to 12 mph
NW
|
|
Saturday
Oct 17
|
Mostly Sunny
|
50°F |
15 mph
NW
|
|
Saturday Night
Oct 17
|
Partly Cloudy
|
31°F |
2 to 12 mph
NW
|
|
Sunday
Oct 18
|
Sunny
|
55°F |
2 to 6 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Cornwall.
