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Shaded-relief atlas plate of Grand Isle, Maine: rivers, roads, the city limits and where the water drains.
MAINE · AROOSTOOK COUNTY

Grand Isle

184 people, 550 ft above sea level in Aroostook County.

550 ftElevation, city center
184People, 2024 estimate
1 sq miLand area
Sunny 57°
Sunny now Dew point 48° · N 6 mph · high 60°
City of Grand Isle River Interstate 2 miles
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The Grand Isle plate. Relief from Copernicus GLO-30; rivers and lakes from USGS NHD; watersheds from the USGS Watershed Boundary Dataset; roads and city limits from Census TIGER 2024.

MILE1
TODAY

Today in Grand Isle

NWS forecast and National Blend of Models · updated 1:00 PM EDT
RIGHT NOW Northern Aroostook Regional Airport (KFVE) · 1:53 PM
Sunny
57° Sunny Feels like 57° · high of 60° near 3 PM
WindN 6 mphno gusts
Humidity72%falling to 62% this afternoon
Pressure29.99 in →steady
Visibility10 mihaze-free
CloudsClear
UV index—no forecast
Dew point 48° · Dry58° by Friday: more humid
DryComfortableStickyMuggyOppressive
NEXT RAIN
Mostly cloudy
Friday, about 9 AMin about 66 hours · 39% chance · rain
LIKELY AMOUNT0–0.2 inmost likely 0.02; 1 in 10 over 0.7
LAST RAINSept. 200.02 in · 9 dry days
ALERTS & OUTLOOKS
No watches or warnings for Aroostook County
NWS Caribou and the Storm Prediction Center · checked 2:48 PM
SUN & MOON
↑ 6:28 AM6:17 PM ↓
11 h 48 m of daylight, 3 minutes less than yesterday
Waning gibbous, 89% lit. The Harvest Moon was full Saturday.
AIR & POLLEN
—
Air quality index ·
No pollen source yet.

The next three days, hour by hour

Sky: clear, cloudy, night Rain likely National Blend of Models
TUESDAY, SEPT. 29
WEDNESDAY, SEPT. 30
THURSDAY, OCT. 1
FRIDAY, OCT. 2
2p
5p
8p
11p
2a
5a
8a
11a
2p
5p
8p
11p
2a
5a
8a
11a
2p
5p
8p
11p
2a
5a
8a
11a
mostly cloudy day
mostly cloudy night
partly cloudy night
partly cloudy night
partly cloudy night
fog
mostly cloudy day
partly cloudy day
mostly cloudy day
mostly cloudy night
partly cloudy night
mostly clear night
mostly clear night
partly cloudy night
partly cloudy day
partly cloudy day
partly cloudy day
partly cloudy night
partly cloudy night
mostly cloudy night
mostly cloudy night
mostly cloudy night
rain
rain
TEMPERATURE °F
59°
44°
67°
50°
74°
57°
CHANCE OF RAIN
39% · 0.05 in Friday morning 50%
WIND, MPH
7
3
3
3
3
0
0
2
4
4
6
7
7
7
9
13
14
12
12
11
10
9
8
8
HOW IT FEELS · DEW POINT
Dry: dew points 44 to 58°

The next seven days, and how sure we are

Forecast, with the range 8 in 10 ensemble members agree on Normal, about 59° / 42°
TUE Sept. 29 Mostly cloudy Mostly cloudy
60° 42°
0% rain — NE 7 A
WED Sept. 30 Mostly cloudy; warmer Mostly cloudy; warmer
68° 49°
0% rain — SSW 2 B
THU Oct. 1 Partly cloudy Partly cloudy
74° 56°
10% rain — SW 12, gusts 25 B
FRI Oct. 2 Chance of showers; cooler Chance of showers; cooler
66° 43°
40% rain up to 0.2″ NW 7 C
SAT Oct. 3 Sunny; cooler Sunny; cooler
57° 33°
0% rain — NW 8 C
SUN Oct. 4 Chance of showers Chance of showers
57° 39°
50% rain up to 0.3″ SSE 10 B
MON Oct. 5 Chance of showers Chance of showers
55° 34°
40% rain up to 0.4″ WNW 16 C
How sure are we? AModels agree: highs within 4° BSome spread: within 8° CWide spread: check back
Range from the National Blend of Models percentiles · graded on Forecast Scores
AIR MAIL

Where today’s air came from

The air arriving over Grand Isle about 5,000 feet above the ground was over the western Atlantic three days ago, about 1,130 miles back along its path. It rose from near the ground on the way. Near the ground the air came from Canada; at 10,000 feet, from the Great Lakes. Traced back 72 hours through NOAA’s hourly RAP analyses and the GFS beyond them, nine paths at each of three heights.

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ON THE NETWORK

Around Grand Isle on the Forecast Network

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FORECASTCITY
Atlas plate of Grand Isle, Maine. Explore the plate
MAINE · AROOSTOOK

Grand Isle

184 people, 550 ft above sea level in Aroostook County.

550 ftElevation
184People
1 sq miLand
Sunny 57°
SunnyDew point 48°
1

Today in Grand Isle

NEXT 15 HOURS
Now mostly cloudy day 59° 1%
5p mostly cloudy day 60° 1%
8p partly cloudy night 53° 1%
11p partly cloudy night 49° 0%
2a partly cloudy night 46° 0%
5a fog 44° 0%
Mostly cloudy
NEXT RAINFriday about 9 AM · 39%
→
Tue0%
Mostly cloudy Mostly cloudy
42
60
A
Wed0%
Mostly cloudy; warmer Mostly cloudy; warmer
49
68
B
Thu10%
Partly cloudy Partly cloudy
56
74
B
Fri40%
Chance of showers; cooler Chance of showers; cooler
43
66
C
Sat0%
Sunny; cooler Sunny; cooler
33
57
C
Sun50%
Chance of showers Chance of showers
39
57
B
Mon40%
Chance of showers Chance of showers
34
55
C
Letters show how sure the forecast is: A, models agree; B, some spread; C, check back. Sample data.
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