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As of 08:31 EDT

Weather in South Lyon, MI

51°Current weather

South Lyon, Wednesday, 28 October, 08:31

Overcast. Feels like 50°. High 71°, low 51°.

Pressure30.27 inHg
Wind4.7 mph S
Humidity92%
Visibility6.2 mi
Dew point49°
Thu, 2970° / 51°0.02Light rain
70 °Light rain

South Lyon, Thursday, 29 October

Light rain. High 70°, low 51°.

Pressure30.06 inHg
Wind10.1 mph SW
Humidity60%
Visibility6.2 mi
Dew point52°
Fri, 3057° / 42°0Overcast
57 °Overcast

South Lyon, Friday, 30 October

Overcast. High 57°, low 42°.

Pressure30.36 inHg
Wind4.8 mph N
Humidity64%
Visibility6.2 mi
Dew point40°
Sat, 3155° / 47°0Overcast
55 °Overcast

South Lyon, Saturday, 31 October

Overcast. High 55°, low 47°.

Pressure30.39 inHg
Wind6.9 mph SE
Humidity77%
Visibility6.2 mi
Dew point48°
Sun, 0163° / 51°0Overcast
63 °Overcast

South Lyon, Sunday, 1 November

Overcast. High 63°, low 51°.

Pressure30.33 inHg
Wind4.8 mph SE
Humidity58%
Visibility—
Dew point46°
Mon, 0268° / 48°0Overcast
68 °Overcast

South Lyon, Monday, 2 November

Overcast. High 68°, low 48°.

Pressure30.21 inHg
Wind8.1 mph E
Humidity58%
Visibility—
Dew point50°
Tue, 0358° / 53°0.02Light rain
58 °Light rain

South Lyon, Tuesday, 3 November

Light rain. High 58°, low 53°.

Pressure30.06 inHg
Wind17.8 mph E
Humidity85%
Visibility—
Dew point51°
Wed, 0456° / 50°0.28Light rain
56 °Light rain

South Lyon, Wednesday, 4 November

Light rain. High 56°, low 50°.

Pressure30.06 inHg
Wind16.9 mph SE
Humidity91%
Visibility—
Dew point51°
Thu, 0555° / 51°0.63Rain
55 °Rain

South Lyon, Thursday, 5 November

Rain. High 55°, low 51°.

Pressure29.65 inHg
Wind13.6 mph SE
Humidity98%
Visibility—
Dew point54°
Fri, 0652° / 38°0.34Rain
52 °Rain

South Lyon, Friday, 6 November

Rain. High 52°, low 38°.

Pressure29.88 inHg
Wind22.3 mph N
Humidity78%
Visibility—
Dew point35°
Sat, 0746° / 31°0Clear
46 °Clear

South Lyon, Saturday, 7 November

Clear. High 46°, low 31°.

Pressure30.21 inHg
Wind10.6 mph N
Humidity50%
Visibility—
Dew point26°
Sun, 0851° / 32°0Partly cloudy
51 °Partly cloudy

South Lyon, Sunday, 8 November

Partly cloudy. High 51°, low 32°.

Pressure30.27 inHg
Wind6.4 mph W
Humidity41%
Visibility—
Dew point25°
Mon, 0954° / 36°0Clear
54 °Clear

South Lyon, Monday, 9 November

Clear. High 54°, low 36°.

Pressure30.21 inHg
Wind8 mph SW
Humidity36%
Visibility—
Dew point25°
Tue, 1054° / 39°0Overcast
54 °Overcast

South Lyon, Tuesday, 10 November

Overcast. High 54°, low 39°.

Pressure30.03 inHg
Wind13.3 mph SW
Humidity41%
Visibility—
Dew point29°
Wed, 1152° / 45°0.23Light rain
52 °Light rain

South Lyon, Wednesday, 11 November

Light rain. High 52°, low 45°.

Pressure29.62 inHg
Wind13.3 mph S
Humidity91%
Visibility—
Dew point47°
Thu, 1248° / 39°0.03Light rain
48 °Light rain

South Lyon, Thursday, 12 November

Light rain. High 48°, low 39°.

Pressure29.47 inHg
Wind9.4 mph SW
Humidity61%
Visibility—
Dew point33°

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.