Grand Isle County, VT Weather Forecast
County weather hub
Mostly Sunny
Compare major city weather across Grand Isle County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Mostly sunny, with a high near 77. Northwest wind around 9 mph.
County Weather Overview
This county weather page brings together forecast coverage for Grand Isle County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 0 of 0 mapped cities in Grand Isle County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Jul 17 to Jul 23, 2026
- Latest sync
- Jul 17, 2026 7:04 PM EDT
- Forecast office
- BTV
- Source
- NOAA / NWS
Daily Outlook
This Week in Grand Isle County
Saturday looks like the warmest upcoming period in Grand Isle County at 80 degrees F.
Sunday Night is the coolest period ahead with temperatures near 57 degrees F.
The strongest winds are forecast for Saturday at about 10 to 24 mph S.
Precipitation is mentioned in 9 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 17, 2026 7:04 PM EDT
- Coverage
- 7 days
- Time zone
- America/New_York
- Forecast office
- BTV
- Radar station
- KCXX
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. Southwest wind 5 to 13 mph.
A chance of rain showers between 8am and 1pm, then patchy smoke and a slight chance of showers and thunderstorms between 1pm and 2pm, then areas of smoke and a chance of showers and thunderstorms between 2pm and 3pm, then areas of smoke and showers and thunderstorms. Mostly cloudy, with a high near 80. South wind 10 to 24 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Areas of smoke and showers and thunderstorms before 7pm, then patchy smoke and showers and thunderstorms between 7pm and 11pm, then a chance of showers and thunderstorms between 11pm and 2am. Mostly cloudy, with a low around 61. Southwest wind 13 to 22 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Sunny, with a high near 74. Northwest wind 17 to 22 mph.
Mostly clear, with a low around 57. West wind 5 to 16 mph.
Mostly sunny, with a high near 79. Southwest wind around 6 mph.
A slight chance of rain showers after 2am. Partly cloudy, with a low around 64. South wind 2 to 14 mph, with gusts as high as 24 mph.
A slight chance of rain showers before 8am, then showers and thunderstorms likely. Partly sunny, with a high near 78. South wind 14 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 70%.
Showers and thunderstorms. Mostly cloudy, with a low around 65. South wind 10 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 80%.
Showers and thunderstorms. Mostly cloudy, with a high near 76. Southwest wind around 10 mph. Chance of precipitation is 80%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 61. West wind around 8 mph. Chance of precipitation is 60%.
A slight chance of rain showers. Mostly sunny, with a high near 75. West wind around 7 mph.
A slight chance of rain showers before 8pm. Mostly clear, with a low around 61. Southwest wind around 3 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
Jul 17
|
Mostly Sunny
|
77°F |
9 mph
NW
|
|
Tonight
Jul 17
|
Partly Cloudy
|
59°F |
5 to 13 mph
SW
|
|
Saturday
Jul 18
|
Chance Rain Showers then Patchy Smoke
|
80°F |
10 to 24 mph
S
|
|
Saturday Night
Jul 18
|
Areas Of Smoke
|
61°F |
13 to 22 mph
SW
|
|
Sunday
Jul 19
|
Sunny
|
74°F |
17 to 22 mph
NW
|
|
Sunday Night
Jul 19
|
Mostly Clear
|
57°F |
5 to 16 mph
W
|
|
Monday
Jul 20
|
Mostly Sunny
|
79°F |
6 mph
SW
|
|
Monday Night
Jul 20
|
Partly Cloudy then Slight Chance Rain Showers
|
64°F |
2 to 14 mph
S
|
|
Tuesday
Jul 21
|
Showers And Thunderstorms Likely
|
78°F |
14 to 17 mph
S
|
|
Tuesday Night
Jul 21
|
Showers And Thunderstorms
|
65°F |
10 to 14 mph
S
|
|
Wednesday
Jul 22
|
Showers And Thunderstorms
|
76°F |
10 mph
SW
|
|
Wednesday Night
Jul 22
|
Showers And Thunderstorms Likely
|
61°F |
8 mph
W
|
|
Thursday
Jul 23
|
Slight Chance Rain Showers
|
75°F |
7 mph
W
|
|
Thursday Night
Jul 23
|
Slight Chance Rain Showers then Mostly Clear
|
61°F |
3 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Grand Isle County.
Nearby forecast pages are not available for this location yet.
Coverage
Forecast coverage currently spans 0 of 0 mapped cities in Grand Isle County.
