Greenwich, CT Weather Forecast
Local 7-day forecast
Partly Sunny then Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Greenwich, CT in one place.
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 89. Heat index values as high as 95. Northwest wind around 7 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
Local Weather Overview
This forecast page for 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 10, 2026 9:22 AM EDT.
The active forecast window currently covers Jul 10 to Jul 16, 2026 for Greenwich, CT.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 10 to Jul 16, 2026
- Latest sync
- Jul 10, 2026 9:22 AM EDT
- Forecast office
- OKX
- Source
- NOAA / NWS
Daily Outlook
This Week in Greenwich
Wednesday looks like the warmest upcoming period in Greenwich at 90 degrees F.
Saturday Night is the coolest period ahead with temperatures near 66 degrees F.
The strongest winds are forecast for Monday Night at about 9 to 14 mph SW.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 10, 2026 9:22 AM EDT
- Coverage
- 7 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
A chance of showers and thunderstorms before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then patchy fog and a slight chance of rain showers. Mostly cloudy, with a low around 70. Northwest wind around 7 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
A slight chance of rain showers before 2pm, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 84. Northeast wind around 8 mph. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 66. Northeast wind 3 to 7 mph. Chance of precipitation is 20%.
Sunny, with a high near 84. Northeast wind 3 to 7 mph.
Mostly clear, with a low around 67.
Sunny, with a high near 88.
Mostly clear, with a low around 69.
Sunny, with a high near 87.
Mostly clear, with a low around 74.
Sunny, with a high near 90.
A slight chance of rain showers between 8pm and 2am. Partly cloudy, with a low around 73.
Mostly sunny, with a high near 88.
Partly cloudy, with a low around 73.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Jul 10
|
Partly Sunny then Chance Showers And Thunderstorms
|
89°F |
7 mph
NW
|
|
Tonight
Jul 10
|
Chance Showers And Thunderstorms
|
70°F |
7 mph
NW
|
|
Saturday
Jul 11
|
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
84°F |
8 mph
NE
|
|
Saturday Night
Jul 11
|
Slight Chance Showers And Thunderstorms then Mostly Clear
|
66°F |
3 to 7 mph
NE
|
|
Sunday
Jul 12
|
Sunny
|
84°F |
3 to 7 mph
NE
|
|
Sunday Night
Jul 12
|
Mostly Clear
|
67°F |
2 to 7 mph
S
|
|
Monday
Jul 13
|
Sunny
|
88°F |
2 to 13 mph
SW
|
|
Monday Night
Jul 13
|
Mostly Clear
|
69°F |
9 to 14 mph
SW
|
|
Tuesday
Jul 14
|
Sunny
|
87°F |
8 to 12 mph
SW
|
|
Tuesday Night
Jul 14
|
Mostly Clear
|
74°F |
14 mph
SW
|
|
Wednesday
Jul 15
|
Sunny
|
90°F |
9 to 14 mph
W
|
|
Wednesday Night
Jul 15
|
Slight Chance Rain Showers
|
73°F |
7 to 14 mph
NW
|
|
Thursday
Jul 16
|
Mostly Sunny
|
88°F |
6 to 9 mph
NW
|
|
Thursday Night
Jul 16
|
Partly Cloudy
|
73°F |
6 to 9 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Greenwich.
