Grand Isle Weather Forecast 15 Days, Weather in Grand Isle Today
Current weather conditions and 15 day weather forecast for Grand Isle, Vermont, USA including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain risk, wind speed, cloud, pressure, and UV index.
Current weather conditions at Grand Isle
| 17 December 2025 Wednesday -1.7 ° C / 28.9°F  Partly cloudy |
Feels Like : -7.1 ° C / 19.3°F Humidity : % 63 Pressure : 1007 mb Wind Speed : 18 kmph / 11.2 miles from S  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 75 |
15 day weather forecast for Grand Isle, VT, USA
Weather Forecast for next 15 Days for Grand Isle including weather warnings, temperature, rain, wind speed, cloud, snow, wind speed and wind direction, pressure and UV index.Here is weather for the next 15 days in Grand Isle, Vermont state, US. To see the daily forecast, scroll to the table below.
| Date | Weather forecast | Low temperature | High temperature | Avg. temperature | Humidity | Chance of rain | UV Index | Sun Position | Moon Position | |
|---|---|---|---|---|---|---|---|---|---|---|
| 17 December 2025 Wednesday | Partly Cloudy |
-4.5 ° C (23.9°F) |
6.5 ° C (43.7°F) |
0.7 ° C (33.3°F) |
% 70 | 0% | 0.1 | Sunrise:07:26 AM Sunset: 04:15 PM |
Moonrise:05:29 AM Moonset: 02:07 PM Moon Phase ( Waning Crescent ) |
|
| 18 December 2025 Thursday | Partly Cloudy |
-5 ° C (23°F) |
4.7 ° C (40.5°F) |
-1 ° C (30.2°F) |
% 85 | 0% | 0.2 | Sunrise:07:27 AM Sunset: 04:15 PM |
Moonrise:06:32 AM Moonset: 02:44 PM Moon Phase ( Waning Crescent ) |
|
| 19 December 2025 Friday |  Moderate rain |
-3.9 ° C (24.9°F) |
8.9 ° C (48°F) |
4.9 ° C (40.8°F) |
% 88 | 81% | 0 | Sunrise:07:27 AM Sunset: 04:15 PM |
Moonrise:07:32 AM Moonset: 03:31 PM Moon Phase ( New Moon ) |
|
| 20 December 2025 Saturday |  Light freezing rain |
-8.2 ° C (17.3°F) |
-2.7 ° C (27.1°F) |
-5.4 ° C (22.2°F) |
% 59 | 69% | 0.2 | Sunrise:07:28 AM Sunset: 04:16 PM |
Moonrise:08:23 AM Moonset: 04:27 PM Moon Phase ( New Moon ) |
|
| 21 December 2025 Sunday |  Moderate snow |
-4.8 ° C (23.3°F) |
2.3 ° C (36.1°F) |
-1.7 ° C (28.9°F) |
% 77 | 67% | 0 | Sunrise:07:28 AM Sunset: 04:16 PM |
Moonrise:09:06 AM Moonset: 05:31 PM Moon Phase ( Waxing Crescent ) |
|
| 22 December 2025 Monday | Partly Cloudy |
-9.9 ° C (14.1°F) |
-7.2 ° C (19.1°F) |
-8.1 ° C (17.5°F) |
% 62 | 0% | 2 | Sunrise:07:29 AM Sunset: 04:17 PM |
Moonrise:09:41 AM Moonset: 06:39 PM Moon Phase ( Waxing Crescent ) |
|
| 23 December 2025 Tuesday |  Moderate or heavy snow showers |
-5.3 ° C (22.4°F) |
0.7 ° C (33.2°F) |
-1.8 ° C (28.7°F) |
% 83 | 68% | 1 | Sunrise:07:29 AM Sunset: 04:17 PM |
Moonrise:10:08 AM Moonset: 07:49 PM Moon Phase ( Waxing Crescent ) |
|
| 24 December 2025 Wednesday |  Patchy rain nearby |
-4.4 ° C (24°F) |
4.4 ° C (39.9°F) |
0.9 ° C (33.7°F) |
% 81 | 79% | 1 | Sunrise:07:30 AM Sunset: 04:18 PM |
Moonrise:10:31 AM Moonset: 09:00 PM Moon Phase ( Waxing Crescent ) |
|
| 25 December 2025 Thursday |  Patchy light snow |
-4.3 ° C (24.2°F) |
2.5 ° C (36.5°F) |
-0.8 ° C (30.5°F) |
% 84 | 89% | 1 | Sunrise:07:30 AM Sunset: 04:19 PM |
Moonrise:10:51 AM Moonset: 10:10 PM Moon Phase ( Waxing Crescent ) |
|
| 26 December 2025 Friday | Light freezing rain |
-9.9 ° C (14.2°F) |
-5 ° C (23.1°F) |
-5.5 ° C (22.1°F) |
% 71 | 0% | 1 | Sunrise:07:30 AM Sunset: 04:19 PM |
Moonrise:11:10 AM Moonset: 11:22 PM Moon Phase ( Waxing Crescent ) |
|
| 27 December 2025 Saturday | Partly Cloudy |
-11.6 ° C (11.2°F) |
-7 ° C (19.5°F) |
-9.1 ° C (15.6°F) |
% 68 | 0% | 2 | Sunrise:07:30 AM Sunset: 04:20 PM |
Moonrise:11:29 AM Moonset: No moonset Moon Phase ( First Quarter ) |
|
| 28 December 2025 Sunday |  Light snow showers |
-14.7 ° C (5.6°F) |
-10.6 ° C (12.8°F) |
-10.2 ° C (13.6°F) |
% 76 | 80% | 1 | Sunrise:07:31 AM Sunset: 04:21 PM |
Moonrise:11:49 AM Moonset: 12:35 AM Moon Phase ( Waxing Gibbous ) |
|
| 29 December 2025 Monday | Partly Cloudy |
-16 ° C (3.2°F) |
-10.6 ° C (12.9°F) |
-12.8 ° C (9°F) |
% 64 | 0% | 2 | Sunrise:07:31 AM Sunset: 04:22 PM |
Moonrise:12:12 PM Moonset: 01:52 AM Moon Phase ( Waxing Gibbous ) |
|
| 30 December 2025 Tuesday | Light freezing rain |
-9.7 ° C (14.5°F) |
-1 ° C (30.2°F) |
-5.6 ° C (21.8°F) |
% 83 | 68% | 1 | Sunrise:07:31 AM Sunset: 04:22 PM |
Moonrise:12:41 PM Moonset: 03:13 AM Moon Phase ( Waxing Gibbous ) |
|
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