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As of 17:10 EDT

Weather in South Deer Isle, ME

77°Current weather

South Deer Isle, Sunday, 9 August, 17:10

Overcast. Feels like 77°. High 84°, low 67°.

Pressure29.80 inHg
Wind12.2 mph S
Humidity68%
Visibility1.5 mi
Dew point67°
Mon, 1081° / 66°0.06Rain
81 °Rain

South Deer Isle, Monday, 10 August

Rain. High 81°, low 66°.

Pressure29.94 inHg
Wind8.8 mph SW
Humidity68%
Visibility6.2 mi
Dew point59°
Tue, 1170° / 63°0.04Light rain
70 °Light rain

South Deer Isle, Tuesday, 11 August

Light rain. High 70°, low 63°.

Pressure29.71 inHg
Wind7.5 mph SW
Humidity80%
Visibility5.2 mi
Dew point62°
Wed, 1268° / 62°0Overcast
68 °Overcast

South Deer Isle, Wednesday, 12 August

Overcast. High 68°, low 62°.

Pressure29.77 inHg
Wind10.9 mph S
Humidity69%
Visibility6.2 mi
Dew point57°
Thu, 1369° / 61°0.14Light rain
69 °Light rain

South Deer Isle, Thursday, 13 August

Light rain. High 69°, low 61°.

Pressure29.68 inHg
Wind12.2 mph S
Humidity85%
Visibility6.2 mi
Dew point60°
Fri, 1467° / 59°0Mostly clear
67 °Mostly clear

South Deer Isle, Friday, 14 August

Mostly clear. High 67°, low 59°.

Pressure29.91 inHg
Wind15.7 mph NW
Humidity62%
Visibility—
Dew point51°
Sat, 1566° / 57°0Clear
66 °Clear

South Deer Isle, Saturday, 15 August

Clear. High 66°, low 57°.

Pressure30.15 inHg
Wind18.2 mph SW
Humidity56%
Visibility—
Dew point48°
Sun, 1664° / 57°0.95Heavy rain
64 °Heavy rain

South Deer Isle, Sunday, 16 August

Heavy rain. High 64°, low 57°.

Pressure30.03 inHg
Wind31.9 mph SE
Humidity72%
Visibility—
Dew point55°
Mon, 1764° / 57°0.82Heavy rain
64 °Heavy rain

South Deer Isle, Monday, 17 August

Heavy rain. High 64°, low 57°.

Pressure29.68 inHg
Wind32.3 mph E
Humidity92%
Visibility—
Dew point56°
Tue, 1866° / 59°0Overcast
66 °Overcast

South Deer Isle, Tuesday, 18 August

Overcast. High 66°, low 59°.

Pressure30.03 inHg
Wind12.9 mph SW
Humidity73%
Visibility—
Dew point56°
Wed, 1964° / 62°0.33Rain
64 °Rain

South Deer Isle, Wednesday, 19 August

Rain. High 64°, low 62°.

Pressure29.83 inHg
Wind26.3 mph S
Humidity96%
Visibility—
Dew point62°
Thu, 2067° / 61°0Clear
67 °Clear

South Deer Isle, Thursday, 20 August

Clear. High 67°, low 61°.

Pressure29.88 inHg
Wind18.9 mph SW
Humidity66%
Visibility—
Dew point55°
Fri, 2164° / 62°0.13Light rain
64 °Light rain

South Deer Isle, Friday, 21 August

Light rain. High 64°, low 62°.

Pressure29.74 inHg
Wind17.4 mph S
Humidity90%
Visibility—
Dew point61°
Sat, 2267° / 60°0Overcast
67 °Overcast

South Deer Isle, Saturday, 22 August

Overcast. High 67°, low 60°.

Pressure29.94 inHg
Wind12.2 mph N
Humidity67%
Visibility—
Dew point53°
Sun, 2364° / 61°0Mostly clear
64 °Mostly clear

South Deer Isle, Sunday, 23 August

Mostly clear. High 64°, low 61°.

Pressure30.09 inHg
Wind14 mph S
Humidity74%
Visibility—
Dew point55°
Mon, 2464° / 61°0.1Light rain
64 °Light rain

South Deer Isle, Monday, 24 August

Light rain. High 64°, low 61°.

Pressure29.94 inHg
Wind16.3 mph S
Humidity86%
Visibility—
Dew point59°

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 South Deer 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 South Deer 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.