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As of 07:12 EDT

Weather in Mackinac Island, MI

64°Current weather

Mackinac Island, Sunday, 9 August, 07:12

Mostly clear. Feels like 65°. High 80°, low 62°.

Pressure29.94 inHg
Wind10.3 mph SW
Humidity99%
Visibility6.2 mi
Dew point64°
Mon, 1075° / 64°0.09Rain
75 °Rain

Mackinac Island, Monday, 10 August

Rain. High 75°, low 64°.

Pressure29.88 inHg
Wind10.4 mph N
Humidity87%
Visibility6.2 mi
Dew point64°
Tue, 1165° / 62°0.15Rain
65 °Rain

Mackinac Island, Tuesday, 11 August

Rain. High 65°, low 62°.

Pressure29.94 inHg
Wind1.8 mph SW
Humidity69%
Visibility6.2 mi
Dew point55°
Wed, 1271° / 61°0.04Light rain
71 °Light rain

Mackinac Island, Wednesday, 12 August

Light rain. High 71°, low 61°.

Pressure29.80 inHg
Wind5.3 mph NW
Humidity78%
Visibility6.2 mi
Dew point59°
Thu, 1366° / 56°0.01Light rain
66 °Light rain

Mackinac Island, Thursday, 13 August

Light rain. High 66°, low 56°.

Pressure30.00 inHg
Wind16.5 mph N
Humidity52%
Visibility—
Dew point46°
Fri, 1467° / 55°0Clear
67 °Clear

Mackinac Island, Friday, 14 August

Clear. High 67°, low 55°.

Pressure30.18 inHg
Wind13.7 mph N
Humidity51%
Visibility—
Dew point45°
Sat, 1568° / 57°0Overcast
68 °Overcast

Mackinac Island, Saturday, 15 August

Overcast. High 68°, low 57°.

Pressure30.30 inHg
Wind7.1 mph N
Humidity54%
Visibility—
Dew point48°
Sun, 1667° / 63°0.04Light rain
67 °Light rain

Mackinac Island, Sunday, 16 August

Light rain. High 67°, low 63°.

Pressure30.09 inHg
Wind8.3 mph W
Humidity68%
Visibility—
Dew point56°
Mon, 1772° / 61°0Mostly clear
72 °Mostly clear

Mackinac Island, Monday, 17 August

Mostly clear. High 72°, low 61°.

Pressure30.06 inHg
Wind11.1 mph NW
Humidity56%
Visibility—
Dew point53°
Tue, 1869° / 60°0Mostly clear
69 °Mostly clear

Mackinac Island, Tuesday, 18 August

Mostly clear. High 69°, low 60°.

Pressure30.06 inHg
Wind12.3 mph SE
Humidity63%
Visibility—
Dew point53°
Wed, 1974° / 65°0Overcast
74 °Overcast

Mackinac Island, Wednesday, 19 August

Overcast. High 74°, low 65°.

Pressure29.94 inHg
Wind11.8 mph S
Humidity72%
Visibility—
Dew point63°
Thu, 2075° / 68°0.18Light rain
75 °Light rain

Mackinac Island, Thursday, 20 August

Light rain. High 75°, low 68°.

Pressure29.77 inHg
Wind10.9 mph NW
Humidity89%
Visibility—
Dew point69°
Fri, 2173° / 61°0Overcast
73 °Overcast

Mackinac Island, Friday, 21 August

Overcast. High 73°, low 61°.

Pressure29.94 inHg
Wind15.3 mph N
Humidity66%
Visibility—
Dew point59°
Sat, 2266° / 58°0.03Light rain
66 °Light rain

Mackinac Island, Saturday, 22 August

Light rain. High 66°, low 58°.

Pressure30.03 inHg
Wind12.3 mph NE
Humidity77%
Visibility—
Dew point55°
Sun, 2367° / 61°0.04Light rain
67 °Light rain

Mackinac Island, Sunday, 23 August

Light rain. High 67°, low 61°.

Pressure30.03 inHg
Wind14.9 mph E
Humidity88%
Visibility—
Dew point59°
Mon, 2465° / 60°0Clear
65 °Clear

Mackinac Island, Monday, 24 August

Clear. High 65°, low 60°.

Pressure30.21 inHg
Wind17.3 mph E
Humidity59%
Visibility—
Dew point49°

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 Mackinac Island, MI 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 Mackinac Island, MI 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.