Grand Isle Weather Forecast 15 Days, Weather in Grand Isle Today
Current weather conditions and 15 day weather forecast for Grand Isle, Maine, 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
| 01 April 2026 Wednesday -4.4 ° C / 24.1°F  Patchy light snow |
Feels Like : -9.4 ° C / 15.1°F Humidity : % 88 Pressure : 1011 mb Wind Speed : 13 kmph / 8.1 miles from ENE  Visibility : 6.4 km Precipitation (rainfall) : 1.35 mm Cloud (%) : 100 |
15 day weather forecast for Grand Isle, ME, 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, Maine 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 01 April 2026 Wednesday |  Light snow |
-4 ° C (24.8°F) |
0.7 ° C (33.3°F) |
-2.3 ° C (27.8°F) |
% 85 | 84% | 0.8 | Sunrise:06:12 AM Sunset: 07:03 PM |
Moonrise:06:57 PM Moonset: 05:48 AM Moon Phase ( Waxing Gibbous ) |
|
| 02 April 2026 Thursday |  Moderate or heavy snow showers |
-5.4 ° C (22.3°F) |
-0.5 ° C (31.1°F) |
-2.9 ° C (26.8°F) |
% 83 | 77% | 0.8 | Sunrise:06:10 AM Sunset: 07:04 PM |
Moonrise:08:07 PM Moonset: 06:04 AM Moon Phase ( Full Moon ) |
|
| 03 April 2026 Friday |  Ice pellets |
-3.8 ° C (25.2°F) |
-0.4 ° C (31.4°F) |
-1.7 ° C (28.9°F) |
% 91 | 69% | 0.1 | Sunrise:06:08 AM Sunset: 07:06 PM |
Moonrise:09:18 PM Moonset: 06:20 AM Moon Phase ( Waning Gibbous ) |
|
| 04 April 2026 Saturday | Light snow |
-3.6 ° C (25.5°F) |
0.9 ° C (33.6°F) |
-0.8 ° C (30.6°F) |
% 92 | 74% | 0.9 | Sunrise:06:06 AM Sunset: 07:07 PM |
Moonrise:10:28 PM Moonset: 06:40 AM Moon Phase ( Waning Gibbous ) |
|
| 05 April 2026 Sunday | Ice pellets |
-4.3 ° C (24.3°F) |
0.5 ° C (32.9°F) |
-1.8 ° C (28.8°F) |
% 97 | 72% | 0 | Sunrise:06:04 AM Sunset: 07:09 PM |
Moonrise:11:37 PM Moonset: 07:05 AM Moon Phase ( Waning Gibbous ) |
|
| 06 April 2026 Monday |  Light freezing rain |
-6.8 ° C (19.7°F) |
-0.4 ° C (31.2°F) |
-3.1 ° C (26.5°F) |
% 89 | 78% | 1 | Sunrise:06:02 AM Sunset: 07:10 PM |
Moonrise:No moonrise Moonset: 07:36 AM Moon Phase ( Waning Gibbous ) |
|
| 07 April 2026 Tuesday |  Light snow showers |
-17.1 ° C (1.3°F) |
-2.6 ° C (27.4°F) |
-9.4 ° C (15.1°F) |
% 88 | 84% | 1 | Sunrise:06:00 AM Sunset: 07:12 PM |
Moonrise:12:40 AM Moonset: 08:15 AM Moon Phase ( Waning Gibbous ) |
|
| 08 April 2026 Wednesday | Light freezing rain |
-20.5 ° C (-4.8°F) |
-1.4 ° C (29.5°F) |
-9.7 ° C (14.5°F) |
% 92 | 0% | 1 | Sunrise:05:58 AM Sunset: 07:13 PM |
Moonrise:01:37 AM Moonset: 09:05 AM Moon Phase ( Waning Gibbous ) |
|
| 09 April 2026 Thursday |  Freezing fog |
-15.2 ° C (4.7°F) |
1.3 ° C (34.3°F) |
-4.9 ° C (23.1°F) |
% 97 | 76% | 1 | Sunrise:05:56 AM Sunset: 07:14 PM |
Moonrise:02:23 AM Moonset: 10:05 AM Moon Phase ( Waning Gibbous ) |
|
| 10 April 2026 Friday |  Patchy rain nearby |
-3.3 ° C (26°F) |
5.6 ° C (42.1°F) |
1.3 ° C (34.4°F) |
% 98 | 88% | 1 | Sunrise:05:55 AM Sunset: 07:16 PM |
Moonrise:03:00 AM Moonset: 11:12 AM Moon Phase ( Last Quarter ) |
|
| 11 April 2026 Saturday |  Partly Cloudy |
1.8 ° C (35.2°F) |
14.2 ° C (57.6°F) |
7.9 ° C (46.1°F) |
% 93 | 0% | 3 | Sunrise:05:53 AM Sunset: 07:17 PM |
Moonrise:03:28 AM Moonset: 12:23 PM Moon Phase ( Waning Crescent ) |
|
| 12 April 2026 Sunday | Patchy rain nearby |
8.6 ° C (47.4°F) |
17.7 ° C (63.9°F) |
12.6 ° C (54.7°F) |
% 85 | 89% | 3 | Sunrise:05:51 AM Sunset: 07:19 PM |
Moonrise:03:51 AM Moonset: 01:37 PM Moon Phase ( Waning Crescent ) |
|
| 13 April 2026 Monday | Partly Cloudy |
2.6 ° C (36.7°F) |
11.1 ° C (52°F) |
6.8 ° C (44.2°F) |
% 67 | 0% | 3 | Sunrise:05:49 AM Sunset: 07:20 PM |
Moonrise:04:10 AM Moonset: 02:51 PM Moon Phase ( Waning Crescent ) |
|
| 14 April 2026 Tuesday | Patchy rain nearby |
5.8 ° C (42.4°F) |
22.9 ° C (73.2°F) |
13.6 ° C (56.4°F) |
% 78 | 85% | 3 | Sunrise:05:47 AM Sunset: 07:21 PM |
Moonrise:04:28 AM Moonset: 04:07 PM Moon Phase ( Waning Crescent ) |
|
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