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As of 05:51 EDT

Weather in Grand Isle, VT

69°Current weather

Grand Isle, Sunday, 9 August, 05:51

Clear. Feels like 70°. High 88°, low 68°.

Pressure29.85 inHg
Wind12.8 mph S
Humidity97%
Visibility6.2 mi
Dew point68°
Mon, 1083° / 62°0.09Light rain
83 °Light rain

Grand Isle, Monday, 10 August

Light rain. High 83°, low 62°.

Pressure29.94 inHg
Wind10.4 mph S
Humidity69%
Visibility6.2 mi
Dew point61°
Tue, 1178° / 69°0.07Light rain
78 °Light rain

Grand Isle, Tuesday, 11 August

Light rain. High 78°, low 69°.

Pressure29.80 inHg
Wind16 mph NW
Humidity56%
Visibility6.2 mi
Dew point58°
Wed, 1271° / 66°0.02Light rain
71 °Light rain

Grand Isle, Wednesday, 12 August

Light rain. High 71°, low 66°.

Pressure29.77 inHg
Wind2.6 mph W
Humidity66%
Visibility6.2 mi
Dew point58°
Thu, 1372° / 60°0.27Light rain
72 °Light rain

Grand Isle, Thursday, 13 August

Light rain. High 72°, low 60°.

Pressure29.62 inHg
Wind24.3 mph NW
Humidity47%
Visibility—
Dew point50°
Fri, 1466° / 59°0.02Light rain
66 °Light rain

Grand Isle, Friday, 14 August

Light rain. High 66°, low 59°.

Pressure29.88 inHg
Wind26.5 mph NW
Humidity57%
Visibility—
Dew point47°
Sat, 1572° / 61°0Overcast
72 °Overcast

Grand Isle, Saturday, 15 August

Overcast. High 72°, low 61°.

Pressure30.03 inHg
Wind28.5 mph NW
Humidity62%
Visibility—
Dew point50°
Sun, 1672° / 62°0Overcast
72 °Overcast

Grand Isle, Sunday, 16 August

Overcast. High 72°, low 62°.

Pressure30.15 inHg
Wind8.8 mph N
Humidity65%
Visibility—
Dew point51°
Mon, 1770° / 65°0.2Rain
70 °Rain

Grand Isle, Monday, 17 August

Rain. High 70°, low 65°.

Pressure30.03 inHg
Wind7.5 mph S
Humidity67%
Visibility—
Dew point55°
Tue, 1872° / 62°0.1Light rain
72 °Light rain

Grand Isle, Tuesday, 18 August

Light rain. High 72°, low 62°.

Pressure30.09 inHg
Wind12.5 mph N
Humidity82%
Visibility—
Dew point58°
Wed, 1972° / 63°0Overcast
72 °Overcast

Grand Isle, Wednesday, 19 August

Overcast. High 72°, low 63°.

Pressure30.18 inHg
Wind5.5 mph S
Humidity71%
Visibility—
Dew point54°
Thu, 2080° / 67°0Overcast
80 °Overcast

Grand Isle, Thursday, 20 August

Overcast. High 80°, low 67°.

Pressure30.00 inHg
Wind17.3 mph S
Humidity73%
Visibility—
Dew point61°
Fri, 2175° / 70°0.78Rain
75 °Rain

Grand Isle, Friday, 21 August

Rain. High 75°, low 70°.

Pressure29.80 inHg
Wind21.7 mph S
Humidity90%
Visibility—
Dew point68°
Sat, 2272° / 67°0.03Light rain
72 °Light rain

Grand Isle, Saturday, 22 August

Light rain. High 72°, low 67°.

Pressure29.97 inHg
Wind15.8 mph NW
Humidity81%
Visibility—
Dew point61°
Sun, 2368° / 63°0.1Light rain
68 °Light rain

Grand Isle, Sunday, 23 August

Light rain. High 68°, low 63°.

Pressure30.00 inHg
Wind10.1 mph N
Humidity73%
Visibility—
Dew point59°
Mon, 2469° / 60°0Overcast
69 °Overcast

Grand Isle, Monday, 24 August

Overcast. High 69°, low 60°.

Pressure30.12 inHg
Wind18.4 mph N
Humidity74%
Visibility—
Dew point56°

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, VT 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, VT 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.