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As of 09:30 EDT

Weather in Port Sanilac, MI

71°Current weather

Port Sanilac, Sunday, 9 August, 09:30

Clear. Feels like 71°. High 84°, low 61°.

Pressure30.03 inHg
Wind7.9 mph SW
Humidity77%
Visibility6.2 mi
Dew point63°
Mon, 1082° / 70°0.07Light rain
82 °Light rain

Port Sanilac, Monday, 10 August

Light rain. High 82°, low 70°.

Pressure29.88 inHg
Wind11.5 mph W
Humidity88%
Visibility6.2 mi
Dew point69°
Tue, 1173° / 65°0Partly cloudy
73 °Partly cloudy

Port Sanilac, Tuesday, 11 August

Partly cloudy. High 73°, low 65°.

Pressure29.94 inHg
Wind5.5 mph E
Humidity61%
Visibility6.2 mi
Dew point57°
Wed, 1273° / 67°0.01Light rain
73 °Light rain

Port Sanilac, Wednesday, 12 August

Light rain. High 73°, low 67°.

Pressure29.77 inHg
Wind6.6 mph N
Humidity71%
Visibility6.2 mi
Dew point63°
Thu, 1369° / 61°0Overcast
69 °Overcast

Port Sanilac, Thursday, 13 August

Overcast. High 69°, low 61°.

Pressure30.00 inHg
Wind16.5 mph NE
Humidity53%
Visibility—
Dew point51°
Fri, 1468° / 59°0Clear
68 °Clear

Port Sanilac, Friday, 14 August

Clear. High 68°, low 59°.

Pressure30.15 inHg
Wind14.4 mph N
Humidity59%
Visibility—
Dew point52°
Sat, 1568° / 60°0Overcast
68 °Overcast

Port Sanilac, Saturday, 15 August

Overcast. High 68°, low 60°.

Pressure30.30 inHg
Wind11 mph E
Humidity71%
Visibility—
Dew point57°
Sun, 1666° / 58°0.27Rain
66 °Rain

Port Sanilac, Sunday, 16 August

Rain. High 66°, low 58°.

Pressure30.06 inHg
Wind16 mph SE
Humidity70%
Visibility—
Dew point53°
Mon, 1769° / 63°0Overcast
69 °Overcast

Port Sanilac, Monday, 17 August

Overcast. High 69°, low 63°.

Pressure30.03 inHg
Wind8 mph N
Humidity70%
Visibility—
Dew point58°
Tue, 1877° / 62°0Overcast
77 °Overcast

Port Sanilac, Tuesday, 18 August

Overcast. High 77°, low 62°.

Pressure29.91 inHg
Wind11.9 mph S
Humidity55%
Visibility—
Dew point58°
Wed, 1975° / 65°0.07Light rain
75 °Light rain

Port Sanilac, Wednesday, 19 August

Light rain. High 75°, low 65°.

Pressure29.62 inHg
Wind24 mph N
Humidity82%
Visibility—
Dew point66°
Thu, 2066° / 61°0.01Light rain
66 °Light rain

Port Sanilac, Thursday, 20 August

Light rain. High 66°, low 61°.

Pressure29.94 inHg
Wind22.6 mph N
Humidity53%
Visibility—
Dew point47°
Fri, 2178° / 57°0Overcast
78 °Overcast

Port Sanilac, Friday, 21 August

Overcast. High 78°, low 57°.

Pressure29.83 inHg
Wind12.2 mph SW
Humidity45%
Visibility—
Dew point50°
Sat, 2275° / 64°0.67Rain
75 °Rain

Port Sanilac, Saturday, 22 August

Rain. High 75°, low 64°.

Pressure29.65 inHg
Wind21.6 mph NW
Humidity77%
Visibility—
Dew point66°
Sun, 2369° / 61°0.09Light rain
69 °Light rain

Port Sanilac, Sunday, 23 August

Light rain. High 69°, low 61°.

Pressure30.03 inHg
Wind23.9 mph NW
Humidity50%
Visibility—
Dew point49°
Mon, 2469° / 58°0Clear
69 °Clear

Port Sanilac, Monday, 24 August

Clear. High 69°, low 58°.

Pressure30.21 inHg
Wind14.4 mph S
Humidity57%
Visibility—
Dew point51°

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 Port Sanilac, 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 Port Sanilac, 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.