Weather in Grand Isle, ME
Grand Isle, Thursday, 5 November, 04:10
Fog. Feels like 43°. High 60°, low 47°.
Monthly outlook for Grand Isle, ME: average high 40°, average low 31°. That is 0.8° above the climate normal for November. Precipitation is expected on 8 days (about 2.6 inches), against a normal of 6 days and 2.0 inches. The warmest day looks like 5 November (60.4°), the coolest 18 November (23°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 5 November – 14 November | 42.7° | 40.3° | +1.3° |
| 15 November – 24 November | 35.6° | 34.8° | +0.4° |
| 25 November – 4 December | at normal | 31.2° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Saint David (8 mi).
0.23
Grand Isle, Friday, 6 November
Heavy rain. High 60°, low 37°.
0.02Grand Isle, Saturday, 7 November
Light rain. High 43°, low 32°.
0.35Grand Isle, Sunday, 8 November
Rain. High 38°, low 34°.
0.35
Grand Isle, Monday, 9 November
Snow. High 36°, low 32°.
0.02Grand Isle, Tuesday, 10 November
Snow. High 42°, low 35°.
0.01Grand Isle, Wednesday, 11 November
Light rain. High 39°, low 30°.
0
Grand Isle, Thursday, 12 November
Overcast. High 38°, low 29°.
0.13Grand Isle, Friday, 13 November
Light snow. High 35°, low 32°.
0Grand Isle, Saturday, 14 November
Overcast. High 35°, low 26°.
0.02Grand Isle, Sunday, 15 November
Light snow. High 37°, low 26°.
0.01Grand Isle, Monday, 16 November
Light snow. High 34°, low 25°.
0Grand Isle, Tuesday, 17 November
Overcast. High 34°, low 24°.
0.04Grand Isle, Wednesday, 18 November
Light snow. High 33°, low 23°.
0.37Grand Isle, Thursday, 19 November
Snow. High 37°, low 31°.
0.96Grand Isle, Friday, 20 November
Snow. High 37°, low 34°.
0.16
Grand Isle, Saturday, 21 November
Climate normal for this date — 60-year average.
0.13Grand Isle, Sunday, 22 November
Climate normal for this date — 60-year average.
0.09Grand Isle, Monday, 23 November
Climate normal for this date — 60-year average.
0.08Grand Isle, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.14Grand Isle, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.15Grand Isle, Thursday, 26 November
Climate normal for this date — 60-year average.
0.18Grand Isle, Friday, 27 November
Climate normal for this date — 60-year average.
0.13Grand Isle, Saturday, 28 November
Climate normal for this date — 60-year average.
0.13Grand Isle, Sunday, 29 November
Climate normal for this date — 60-year average.
0.1Grand Isle, Monday, 30 November
Climate normal for this date — 60-year average.
0.17Grand 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.
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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