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As of 18:00 EDT

Weather in Grass Lake, MI

83°Current weather

Grass Lake, Saturday, 8 August, 18:00

Clear. Feels like 86°. High 84°, low 69°.

Pressure29.91 inHg
Wind14.6 mph W
Humidity56%
Visibility6.2 mi
Dew point64°
Sun, 0989° / 63°0Clear
89 °Clear

Grass Lake, Sunday, 9 August

Clear. High 89°, low 63°.

Pressure30.00 inHg
Wind10.1 mph S
Humidity35%
Visibility6.2 mi
Dew point52°
Mon, 1089° / 70°0.73Rain
89 °Rain

Grass Lake, Monday, 10 August

Rain. High 89°, low 70°.

Pressure29.94 inHg
Wind14.3 mph W
Humidity89%
Visibility6.2 mi
Dew point73°
Tue, 1177° / 67°3.43Heavy rain
77 °Heavy rain

Grass Lake, Tuesday, 11 August

Heavy rain. High 77°, low 67°.

Pressure29.83 inHg
Wind9 mph S
Humidity86%
Visibility6.2 mi
Dew point72°
Wed, 1281° / 63°0Light rain
81 °Light rain

Grass Lake, Wednesday, 12 August

Light rain. High 81°, low 63°.

Pressure29.80 inHg
Wind5.2 mph NW
Humidity68%
Visibility6.2 mi
Dew point65°
Thu, 1365° / 58°0.07Light rain
65 °Light rain

Grass Lake, Thursday, 13 August

Light rain. High 65°, low 58°.

Pressure29.97 inHg
Wind13.1 mph NE
Humidity80%
Visibility—
Dew point56°
Fri, 1470° / 53°0Clear
70 °Clear

Grass Lake, Friday, 14 August

Clear. High 70°, low 53°.

Pressure30.15 inHg
Wind10.5 mph N
Humidity51%
Visibility—
Dew point47°
Sat, 1570° / 52°0Overcast
70 °Overcast

Grass Lake, Saturday, 15 August

Overcast. High 70°, low 52°.

Pressure30.30 inHg
Wind5.2 mph SW
Humidity54%
Visibility—
Dew point50°
Sun, 1675° / 56°0Overcast
75 °Overcast

Grass Lake, Sunday, 16 August

Overcast. High 75°, low 56°.

Pressure30.24 inHg
Wind9.2 mph SW
Humidity53%
Visibility—
Dew point54°
Mon, 1773° / 58°0.04Light rain
73 °Light rain

Grass Lake, Monday, 17 August

Light rain. High 73°, low 58°.

Pressure30.06 inHg
Wind9.3 mph SW
Humidity81%
Visibility—
Dew point61°
Tue, 1879° / 65°0Partly cloudy
79 °Partly cloudy

Grass Lake, Tuesday, 18 August

Partly cloudy. High 79°, low 65°.

Pressure30.00 inHg
Wind9.4 mph N
Humidity53%
Visibility—
Dew point58°
Wed, 1977° / 60°0.19Rain
77 °Rain

Grass Lake, Wednesday, 19 August

Rain. High 77°, low 60°.

Pressure30.00 inHg
Wind11 mph SE
Humidity56%
Visibility—
Dew point56°
Thu, 2075° / 63°0.19Light rain
75 °Light rain

Grass Lake, Thursday, 20 August

Light rain. High 75°, low 63°.

Pressure29.85 inHg
Wind7.7 mph SE
Humidity76%
Visibility—
Dew point66°
Fri, 2178° / 60°0Light rain
78 °Light rain

Grass Lake, Friday, 21 August

Light rain. High 78°, low 60°.

Pressure29.91 inHg
Wind9.1 mph NW
Humidity59%
Visibility—
Dew point59°
Sat, 2264° / 52°0.37Rain
64 °Rain

Grass Lake, Saturday, 22 August

Rain. High 64°, low 52°.

Pressure29.91 inHg
Wind13.3 mph N
Humidity93%
Visibility—
Dew point57°
Sun, 2368° / 45°0Clear
68 °Clear

Grass Lake, Sunday, 23 August

Clear. High 68°, low 45°.

Pressure30.21 inHg
Wind10.7 mph N
Humidity51%
Visibility—
Dew point44°

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 Grass Lake, 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 Grass Lake, 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.