Weather in Grand Isle, ME
Grand Isle, Sunday, 15 November, 09:47
Overcast. Feels like 28°. High 37°, low 32°.
Monthly outlook for Grand Isle, ME: average high 41.1°, average low 28.6°. That is 4.1° above the climate normal for November. Precipitation is expected on 2 days (about 0.8 inches), against a normal of 6 days and 2.1 inches. The warmest day looks like 20 November (50.9°), the coolest 30 November (20.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 15 November – 24 November | 42.7° | 34.8° | +4.4° |
| 25 November – 4 December | 38.3° | 31.2° | +4° |
| 5 December – 14 December | at normal | 25.4° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Saint David (8 mi).
0Grand Isle, Monday, 16 November
Overcast. High 38°, low 27°.
0
Grand Isle, Tuesday, 17 November
Partly cloudy. High 45°, low 27°.
0Grand Isle, Wednesday, 18 November
Overcast. High 47°, low 33°.
0Grand Isle, Thursday, 19 November
Overcast. High 46°, low 33°.
0.01
Grand Isle, Friday, 20 November
Light rain. High 51°, low 37°.
0Grand Isle, Saturday, 21 November
Partly cloudy. High 38°, low 28°.
0Grand Isle, Sunday, 22 November
Overcast. High 47°, low 29°.
0.04
Grand Isle, Monday, 23 November
Light snow. High 44°, low 32°.
0.01Grand Isle, Tuesday, 24 November
Light snow. High 35°, low 24°.
0
Grand Isle, Wednesday, 25 November
Clear. High 38°, low 23°.
0
Grand Isle, Thursday, 26 November
Mostly clear. High 38°, low 26°.
0Grand Isle, Friday, 27 November
Overcast. High 38°, low 26°.
0.6Grand Isle, Saturday, 28 November
Rain. High 48°, low 31°.
0.1Grand Isle, Sunday, 29 November
Light rain. High 43°, low 27°.
0Grand Isle, Monday, 30 November
Overcast. High 25°, low 20°.
0.17
Grand Isle, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.16Grand Isle, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.16Grand Isle, Thursday, 3 December
Climate normal for this date — 60-year average.
0.13Grand Isle, Friday, 4 December
Climate normal for this date — 60-year average.
0.08Grand Isle, Saturday, 5 December
Climate normal for this date — 60-year average.
0.17Grand Isle, Sunday, 6 December
Climate normal for this date — 60-year average.
0.12Grand Isle, Monday, 7 December
Climate normal for this date — 60-year average.
0.07Grand Isle, Tuesday, 8 December
Climate normal for this date — 60-year average.
0.08Grand Isle, Wednesday, 9 December
Climate normal for this date — 60-year average.
0.14Grand Isle, Thursday, 10 December
Climate normal for this date — 60-year average.
0.21Grand Isle, Friday, 11 December
Climate normal for this date — 60-year average.
0.13Grand Isle, Saturday, 12 December
Climate normal for this date — 60-year average.
0.14Grand Isle, Sunday, 13 December
Climate normal for this date — 60-year average.
0.1Grand Isle, Monday, 14 December
Climate normal for this date — 60-year average.
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Grand Isle, ME are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Grand Isle, ME since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.
Sun and moon today
Weather history
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