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As of 18:48 EDT

Weather in South Lyon, MI

65°Current weather

South Lyon, Wednesday, 28 October, 18:48

Clear. Feels like 64°. High 72°, low 50°.

Pressure30.18 inHg
Wind5.3 mph S
Humidity62%
Visibility6.2 mi
Dew point52°
Thu, 2972° / 53°0.04Light rain
72 °Light rain

South Lyon, Thursday, 29 October

Light rain. High 72°, low 53°.

Pressure30.06 inHg
Wind10 mph SW
Humidity62%
Visibility6.2 mi
Dew point52°
Fri, 3056° / 44°0Overcast
56 °Overcast

South Lyon, Friday, 30 October

Overcast. High 56°, low 44°.

Pressure30.36 inHg
Wind5.4 mph N
Humidity67%
Visibility6.2 mi
Dew point41°
Sat, 3159° / 47°0Overcast
59 °Overcast

South Lyon, Saturday, 31 October

Overcast. High 59°, low 47°.

Pressure30.39 inHg
Wind7.3 mph SE
Humidity74%
Visibility6.2 mi
Dew point48°
Sun, 0162° / 50°0Overcast
62 °Overcast

South Lyon, Sunday, 1 November

Overcast. High 62°, low 50°.

Pressure30.36 inHg
Wind2.1 mph E
Humidity66%
Visibility6.2 mi
Dew point47°
Mon, 0267° / 48°0Overcast
67 °Overcast

South Lyon, Monday, 2 November

Overcast. High 67°, low 48°.

Pressure30.21 inHg
Wind9.6 mph SE
Humidity62%
Visibility—
Dew point51°
Tue, 0359° / 54°0.02Light rain
59 °Light rain

South Lyon, Tuesday, 3 November

Light rain. High 59°, low 54°.

Pressure30.06 inHg
Wind12.5 mph S
Humidity89%
Visibility—
Dew point52°
Wed, 0462° / 52°0.2Rain
62 °Rain

South Lyon, Wednesday, 4 November

Rain. High 62°, low 52°.

Pressure29.91 inHg
Wind13.7 mph SE
Humidity69%
Visibility—
Dew point51°
Thu, 0563° / 55°0.23Light rain
63 °Light rain

South Lyon, Thursday, 5 November

Light rain. High 63°, low 55°.

Pressure29.32 inHg
Wind15.8 mph S
Humidity86%
Visibility—
Dew point58°
Fri, 0650° / 42°0Overcast
50 °Overcast

South Lyon, Friday, 6 November

Overcast. High 50°, low 42°.

Pressure29.68 inHg
Wind19 mph W
Humidity54%
Visibility—
Dew point28°
Sat, 0746° / 36°0Mostly clear
46 °Mostly clear

South Lyon, Saturday, 7 November

Mostly clear. High 46°, low 36°.

Pressure29.97 inHg
Wind17.4 mph W
Humidity48%
Visibility—
Dew point26°
Sun, 0848° / 35°0Overcast
48 °Overcast

South Lyon, Sunday, 8 November

Overcast. High 48°, low 35°.

Pressure30.15 inHg
Wind9.8 mph W
Humidity41%
Visibility—
Dew point24°
Mon, 0944° / 41°0.19Light rain
44 °Light rain

South Lyon, Monday, 9 November

Light rain. High 44°, low 41°.

Pressure29.91 inHg
Wind6.6 mph SE
Humidity88%
Visibility—
Dew point41°
Tue, 1048° / 41°0.11Light rain
48 °Light rain

South Lyon, Tuesday, 10 November

Light rain. High 48°, low 41°.

Pressure29.71 inHg
Wind8.4 mph NW
Humidity52%
Visibility—
Dew point31°
Wed, 1141° / 34°0.01Light rain
41 °Light rain

South Lyon, Wednesday, 11 November

Light rain. High 41°, low 34°.

Pressure29.83 inHg
Wind13.9 mph NW
Humidity50%
Visibility—
Dew point23°
Thu, 1241° / 32°0Partly cloudy
41 °Partly cloudy

South Lyon, Thursday, 12 November

Partly cloudy. High 41°, low 32°.

Pressure29.91 inHg
Wind15.5 mph NW
Humidity55%
Visibility—
Dew point25°

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 Lyon, 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 South Lyon, 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.