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As of 13:37 EDT

Weather in St. Clair, MI

85°Current weather

St. Clair, Saturday, 8 August, 13:37

Mostly clear. Feels like 88°. High 87°, low 71°.

Pressure29.88 inHg
Wind8 mph W
Humidity56%
Visibility6.2 mi
Dew point67°
Sun, 0989° / 65°0Clear
89 °Clear

St. Clair, Sunday, 9 August

Clear. High 89°, low 65°.

Pressure30.03 inHg
Wind10.7 mph S
Humidity42%
Visibility6.2 mi
Dew point55°
Mon, 1086° / 66°0.3Rain
86 °Rain

St. Clair, Monday, 10 August

Rain. High 86°, low 66°.

Pressure29.94 inHg
Wind8.9 mph SW
Humidity96%
Visibility6.2 mi
Dew point70°
Tue, 1183° / 66°0.6Rain
83 °Rain

St. Clair, Tuesday, 11 August

Rain. High 83°, low 66°.

Pressure29.85 inHg
Wind8.5 mph S
Humidity73%
Visibility6.2 mi
Dew point70°
Wed, 1281° / 62°0Clear
81 °Clear

St. Clair, Wednesday, 12 August

Clear. High 81°, low 62°.

Pressure29.80 inHg
Wind7 mph N
Humidity56%
Visibility6.2 mi
Dew point60°
Thu, 1370° / 57°0.09Light rain
70 °Light rain

St. Clair, Thursday, 13 August

Light rain. High 70°, low 57°.

Pressure29.83 inHg
Wind16.4 mph NW
Humidity95%
Visibility—
Dew point60°
Fri, 1473° / 52°0Clear
73 °Clear

St. Clair, Friday, 14 August

Clear. High 73°, low 52°.

Pressure30.09 inHg
Wind9.8 mph NW
Humidity43%
Visibility—
Dew point46°
Sat, 1581° / 53°0Clear
81 °Clear

St. Clair, Saturday, 15 August

Clear. High 81°, low 53°.

Pressure30.09 inHg
Wind13 mph NW
Humidity35%
Visibility—
Dew point48°
Sun, 1679° / 59°0Partly cloudy
79 °Partly cloudy

St. Clair, Sunday, 16 August

Partly cloudy. High 79°, low 59°.

Pressure30.18 inHg
Wind7.6 mph N
Humidity42%
Visibility—
Dew point52°
Mon, 1775° / 62°0.06Light rain
75 °Light rain

St. Clair, Monday, 17 August

Light rain. High 75°, low 62°.

Pressure30.12 inHg
Wind10.6 mph SE
Humidity79%
Visibility—
Dew point61°
Tue, 1876° / 60°0Light rain
76 °Light rain

St. Clair, Tuesday, 18 August

Light rain. High 76°, low 60°.

Pressure29.94 inHg
Wind8.4 mph S
Humidity82%
Visibility—
Dew point62°
Wed, 1977° / 61°0.21Light rain
77 °Light rain

St. Clair, Wednesday, 19 August

Light rain. High 77°, low 61°.

Pressure29.85 inHg
Wind15.7 mph N
Humidity79%
Visibility—
Dew point67°
Thu, 2065° / 50°0Light rain
65 °Light rain

St. Clair, Thursday, 20 August

Light rain. High 65°, low 50°.

Pressure30.18 inHg
Wind17.3 mph N
Humidity54%
Visibility—
Dew point44°
Fri, 2172° / 48°0Clear
72 °Clear

St. Clair, Friday, 21 August

Clear. High 72°, low 48°.

Pressure30.15 inHg
Wind12.2 mph N
Humidity32%
Visibility—
Dew point38°
Sat, 2273° / 54°0.35Rain
73 °Rain

St. Clair, Saturday, 22 August

Rain. High 73°, low 54°.

Pressure30.03 inHg
Wind14.1 mph NW
Humidity35%
Visibility—
Dew point41°
Sun, 2370° / 52°0Light rain
70 °Light rain

St. Clair, Sunday, 23 August

Light rain. High 70°, low 52°.

Pressure30.06 inHg
Wind17.1 mph N
Humidity46%
Visibility—
Dew point46°

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 St. Clair, 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 St. Clair, 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.