Grantville, CT Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Grantville, CT in one place.
Mostly sunny, with a high near 76. South wind around 5 mph.
Local Weather Overview
This forecast page for Grantville, 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: Sep 15, 2026 9:25 AM EDT.
The active forecast window currently covers Sep 16 to Sep 21, 2026 for Grantville, CT.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 16 to Sep 21, 2026
- Latest sync
- Sep 15, 2026 9:25 AM EDT
- Forecast office
- ALY
- Source
- NOAA / NWS
Daily Outlook
This Week in Grantville
Thursday looks like the warmest upcoming period in Grantville at 78 degrees F.
Friday Night is the coolest period ahead with temperatures near 49 degrees F.
The strongest winds are forecast for Saturday Night at about 3 to 9 mph S.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 15, 2026 9:25 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
Partly cloudy, with a low around 59. South wind around 1 mph.
A slight chance of rain showers after 2pm. Mostly sunny, with a high near 78. South wind 1 to 6 mph. Chance of precipitation is 20%.
A chance of rain showers. Mostly cloudy, with a low around 62. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
A slight chance of rain showers before 8am. Mostly sunny, with a high near 75.
Partly cloudy, with a low around 49.
Mostly sunny, with a high near 69.
A chance of rain showers after 8pm. Mostly cloudy, with a low around 54. Chance of precipitation is 40%.
Rain showers likely before 2pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 72. Chance of precipitation is 70%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 54. Chance of precipitation is 70%.
A chance of rain showers. Partly sunny, with a high near 68. Chance of precipitation is 40%.
A chance of rain showers. Mostly cloudy, with a low around 50.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Sep 16
|
Mostly Sunny
|
76°F |
5 mph
S
|
|
Wednesday Night
Sep 16
|
Partly Cloudy
|
59°F |
1 mph
S
|
|
Thursday
Sep 17
|
Mostly Sunny then Slight Chance Rain Showers
|
78°F |
1 to 6 mph
S
|
|
Thursday Night
Sep 17
|
Chance Rain Showers
|
62°F |
5 mph
SW
|
|
Friday
Sep 18
|
Slight Chance Rain Showers then Mostly Sunny
|
75°F |
8 mph
N
|
|
Friday Night
Sep 18
|
Partly Cloudy
|
49°F |
6 mph
N
|
|
Saturday
Sep 19
|
Mostly Sunny
|
69°F |
3 mph
E
|
|
Saturday Night
Sep 19
|
Chance Rain Showers
|
54°F |
3 to 9 mph
S
|
|
Sunday
Sep 20
|
Rain Showers Likely
|
72°F |
9 mph
SW
|
|
Sunday Night
Sep 20
|
Showers And Thunderstorms Likely
|
54°F |
7 mph
NW
|
|
Monday
Sep 21
|
Chance Rain Showers
|
68°F |
7 mph
N
|
|
Monday Night
Sep 21
|
Chance Rain Showers
|
50°F |
6 mph
N
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Grantville.