As of 11:37 EST

Weather in Grand Isle, ME

40°Current weather

Grand Isle, Sunday, 8 November, 11:37

Fog. Feels like 33°. High 40°, low 34°.

Pressure29.50 inHg
Wind11.5 mph N
Humidity93%
Visibility1.0 mi
Dew point38°

Monthly outlook for Grand Isle, ME: average high 38.9°, average low 30.6°. That is 1.1° above the climate normal for November. Precipitation is expected on 7 days (about 3.5 inches), against a normal of 6 days and 2.0 inches. The warmest day looks like 23 November (55°), the coolest 20 November (24.6°).

38.9°/30.6°
Average high / low
+1.1°
Above normal
7 / 6
Wet days / normal
3.5 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
8 November – 17 November38.3°38.5°-0.1°
18 November – 27 November39.9°33.5°+3.6°
28 November – 7 Decemberat normal29.6°—

November records over 66 years

69.3°6 November 2022All-time high
-11°30 November 1995All-time low

Climate normals and records are computed from the nearest reference point — Saint David (8 mi).

Mon, 0941° / 35°0.01Light rain
41 °Light rain

Grand Isle, Monday, 9 November

Light rain. High 41°, low 35°.

Pressure29.53 inHg
Wind8.7 mph W
Humidity81%
Visibility6.2 mi
Dew point34°
Tue, 1042° / 29°0.05Light snow
42 °Light snow

Grand Isle, Tuesday, 10 November

Light snow. High 42°, low 29°.

Pressure29.68 inHg
Wind8.6 mph W
Humidity64%
Visibility6.2 mi
Dew point23°
Wed, 1138° / 29°0.02Light rain
38 °Light rain

Grand Isle, Wednesday, 11 November

Light rain. High 38°, low 29°.

Pressure29.80 inHg
Wind11.4 mph NW
Humidity75%
Visibility6.2 mi
Dew point24°
Thu, 1238° / 26°0Mostly clear
38 °Mostly clear

Grand Isle, Thursday, 12 November

Mostly clear. High 38°, low 26°.

Pressure29.85 inHg
Wind6.2 mph NW
Humidity80%
Visibility—
Dew point29°
Fri, 1338° / 26°0Overcast
38 °Overcast

Grand Isle, Friday, 13 November

Overcast. High 38°, low 26°.

Pressure29.59 inHg
Wind13.4 mph NE
Humidity80%
Visibility—
Dew point29°
Sat, 1440° / 35°1.29Snow
40 °Snow

Grand Isle, Saturday, 14 November

Snow. High 40°, low 35°.

Pressure29.44 inHg
Wind16.5 mph E
Humidity92%
Visibility—
Dew point36°
Sun, 1535° / 33°0.34Snow
35 °Snow

Grand Isle, Sunday, 15 November

Snow. High 35°, low 33°.

Pressure29.15 inHg
Wind7.4 mph SW
Humidity99%
Visibility—
Dew point34°
Mon, 1634° / 33°0.09Snow
34 °Snow

Grand Isle, Monday, 16 November

Snow. High 34°, low 33°.

Pressure29.35 inHg
Wind8.3 mph NW
Humidity97%
Visibility—
Dew point33°
Tue, 1736° / 33°0Overcast
36 °Overcast

Grand Isle, Tuesday, 17 November

Overcast. High 36°, low 33°.

Pressure29.68 inHg
Wind11.5 mph NW
Humidity87%
Visibility—
Dew point31°
Wed, 1836° / 29°0Overcast
36 °Overcast

Grand Isle, Wednesday, 18 November

Overcast. High 36°, low 29°.

Pressure30.00 inHg
Wind10.9 mph N
Humidity88%
Visibility—
Dew point33°
Thu, 1936° / 26°0Partly cloudy
36 °Partly cloudy

Grand Isle, Thursday, 19 November

Partly cloudy. High 36°, low 26°.

Pressure30.33 inHg
Wind7.2 mph N
Humidity75%
Visibility—
Dew point25°
Fri, 2037° / 25°0Partly cloudy
37 °Partly cloudy

Grand Isle, Friday, 20 November

Partly cloudy. High 37°, low 25°.

Pressure30.39 inHg
Wind6.9 mph NW
Humidity72%
Visibility—
Dew point25°
Sat, 2137° / 28°0Overcast
37 °Overcast

Grand Isle, Saturday, 21 November

Overcast. High 37°, low 28°.

Pressure30.45 inHg
Wind4.7 mph NW
Humidity68%
Visibility—
Dew point25°
Sun, 2239° / 28°0.17Rain
39 °Rain

Grand Isle, Sunday, 22 November

Rain. High 39°, low 28°.

Pressure30.21 inHg
Wind6.1 mph SE
Humidity78%
Visibility—
Dew point28°
Mon, 2355° / 41°1.05Rain
55 °Rain

Grand Isle, Monday, 23 November

Rain. High 55°, low 41°.

Pressure29.62 inHg
Wind9.5 mph S
Humidity99%
Visibility—
Dew point47°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2433° / 20°0.08Climate normal
33 °Climate normal

Grand Isle, Tuesday, 24 November

Climate normal for this date — 60-year average.

Average high33°
Average low20°
Average precipitation0.08 in
Chance of precipitation42%
Record high51° (1999)
Record low1° (1964)
Wed, 2532° / 20°0.14Climate normal
32 °Climate normal

Grand Isle, Wednesday, 25 November

Climate normal for this date — 60-year average.

Average high32°
Average low20°
Average precipitation0.14 in
Chance of precipitation33%
Record high53° (2014)
Record low-1° (1965)
Thu, 2633° / 20°0.15Climate normal
33 °Climate normal

Grand Isle, Thursday, 26 November

Climate normal for this date — 60-year average.

Average high33°
Average low20°
Average precipitation0.15 in
Chance of precipitation55%
Record high51° (2001)
Record low2° (1962)
Fri, 2732° / 20°0.18Climate normal
32 °Climate normal

Grand Isle, Friday, 27 November

Climate normal for this date — 60-year average.

Average high32°
Average low20°
Average precipitation0.18 in
Chance of precipitation47%
Record high54° (1999)
Record low-5° (1985)
Sat, 2832° / 19°0.13Climate normal
32 °Climate normal

Grand Isle, Saturday, 28 November

Climate normal for this date — 60-year average.

Average high32°
Average low19°
Average precipitation0.13 in
Chance of precipitation50%
Record high49° (1993)
Record low-6° (1969)
Sun, 2931° / 18°0.13Climate normal
31 °Climate normal

Grand Isle, Sunday, 29 November

Climate normal for this date — 60-year average.

Average high31°
Average low18°
Average precipitation0.13 in
Chance of precipitation40%
Record high53° (2003)
Record low-4° (2002)
Mon, 3031° / 16°0.1Climate normal
31 °Climate normal

Grand Isle, Monday, 30 November

Climate normal for this date — 60-year average.

Average high31°
Average low16°
Average precipitation0.1 in
Chance of precipitation33%
Record high55° (2011)
Record low-11° (1995)
Tue, 0131° / 18°0.17Climate normal
31 °Climate normal

Grand Isle, Tuesday, 1 December

Climate normal for this date — 60-year average.

Average high31°
Average low18°
Average precipitation0.17 in
Chance of precipitation45%
Record high56° (2020)
Record low-2° (1989)
Wed, 0231° / 17°0.16Climate normal
31 °Climate normal

Grand Isle, Wednesday, 2 December

Climate normal for this date — 60-year average.

Average high31°
Average low17°
Average precipitation0.16 in
Chance of precipitation45%
Record high54° (2020)
Record low-5° (1972)
Thu, 0329° / 17°0.16Climate normal
29 °Climate normal

Grand Isle, Thursday, 3 December

Climate normal for this date — 60-year average.

Average high29°
Average low17°
Average precipitation0.16 in
Chance of precipitation45%
Record high43° (2022)
Record low-10° (1964)
Fri, 0429° / 16°0.13Climate normal
29 °Climate normal

Grand Isle, Friday, 4 December

Climate normal for this date — 60-year average.

Average high29°
Average low16°
Average precipitation0.13 in
Chance of precipitation45%
Record high52° (1982)
Record low-19° (1972)
Sat, 0526° / 12°0.08Climate normal
26 °Climate normal

Grand Isle, Saturday, 5 December

Climate normal for this date — 60-year average.

Average high26°
Average low12°
Average precipitation0.08 in
Chance of precipitation32%
Record high44° (1990)
Record low-14° (1972)
Sun, 0629° / 13°0.17Climate normal
29 °Climate normal

Grand Isle, Sunday, 6 December

Climate normal for this date — 60-year average.

Average high29°
Average low13°
Average precipitation0.17 in
Chance of precipitation43%
Record high51° (1982)
Record low-13° (1991)
Mon, 0727° / 13°0.12Climate normal
27 °Climate normal

Grand Isle, Monday, 7 December

Climate normal for this date — 60-year average.

Average high27°
Average low13°
Average precipitation0.12 in
Chance of precipitation45%
Record high44° (2021)
Record low-15° (1991)

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.