Old Greenwich, CT Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Old Greenwich, CT in one place.
Sunny, with a high near 94.
Local Weather Overview
This forecast page for Old Greenwich, 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: Jul 11, 2026 11:25 PM EDT.
The active forecast window currently covers Jul 14 to Jul 18, 2026 for Old Greenwich, CT.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 14 to Jul 18, 2026
- Latest sync
- Jul 11, 2026 11:25 PM EDT
- Forecast office
- OKX
- Source
- NOAA / NWS
Daily Outlook
This Week in Old Greenwich
Wednesday looks like the warmest upcoming period in Old Greenwich at 98 degrees F.
Friday Night is the coolest period ahead with temperatures near 71 degrees F.
The strongest winds are forecast for Wednesday at about 10 to 16 mph W.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 11, 2026 11:25 PM EDT
- Coverage
- 5 days
- Time zone
- America/New_York
- Forecast office
- OKX
- Radar station
- KOKX
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 76.
Sunny, with a high near 98.
Partly cloudy, with a low around 73.
Mostly sunny, with a high near 92.
Partly cloudy, with a low around 73.
A slight chance of rain showers after 2pm. Mostly sunny, with a high near 91.
A slight chance of rain showers. Partly cloudy, with a low around 71.
A chance of rain showers. Mostly sunny, with a high near 87.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Jul 14
|
Sunny
|
94°F |
7 to 14 mph
SW
|
|
Tuesday Night
Jul 14
|
Mostly Clear
|
76°F |
14 mph
SW
|
|
Wednesday
Jul 15
|
Sunny
|
98°F |
10 to 16 mph
W
|
|
Wednesday Night
Jul 15
|
Partly Cloudy
|
73°F |
6 to 16 mph
NW
|
|
Thursday
Jul 16
|
Mostly Sunny
|
92°F |
6 to 10 mph
W
|
|
Thursday Night
Jul 16
|
Partly Cloudy
|
73°F |
5 to 10 mph
W
|
|
Friday
Jul 17
|
Mostly Sunny then Slight Chance Rain Showers
|
91°F |
5 to 10 mph
NW
|
|
Friday Night
Jul 17
|
Slight Chance Rain Showers
|
71°F |
6 to 10 mph
NW
|
|
Saturday
Jul 18
|
Chance Rain Showers
|
87°F |
6 to 9 mph
NW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Old Greenwich.
