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As of 22:21 EST

Weather in South Lyon, MI

34°Current weather

South Lyon, Friday, 13 November, 22:21

Mostly clear. Feels like 34°. High 40°, low 34°.

Pressure29.97 inHg
Wind1 mph NW
Humidity82%
Visibility6.2 mi
Dew point29°
Sat, 1445° / 32°0Overcast
45 °Overcast

South Lyon, Saturday, 14 November

Overcast. High 45°, low 32°.

Pressure30.12 inHg
Wind11.5 mph NW
Humidity72%
Visibility6.2 mi
Dew point31°
Sun, 1544° / 35°0Overcast
44 °Overcast

South Lyon, Sunday, 15 November

Overcast. High 44°, low 35°.

Pressure30.42 inHg
Wind7.2 mph NW
Humidity67%
Visibility6.2 mi
Dew point33°
Mon, 1648° / 34°0Clear
48 °Clear

South Lyon, Monday, 16 November

Clear. High 48°, low 34°.

Pressure30.53 inHg
Wind6.2 mph SW
Humidity58%
Visibility6.2 mi
Dew point32°
Tue, 1751° / 34°0Clear
51 °Clear

South Lyon, Tuesday, 17 November

Clear. High 51°, low 34°.

Pressure30.50 inHg
Wind6.6 mph SW
Humidity60%
Visibility6.2 mi
Dew point35°
Wed, 1853° / 35°0Partly cloudy
53 °Partly cloudy

South Lyon, Wednesday, 18 November

Partly cloudy. High 53°, low 35°.

Pressure30.42 inHg
Wind8 mph S
Humidity58%
Visibility—
Dew point36°
Thu, 1955° / 39°0Overcast
55 °Overcast

South Lyon, Thursday, 19 November

Overcast. High 55°, low 39°.

Pressure30.24 inHg
Wind10.9 mph SW
Humidity53%
Visibility—
Dew point36°
Fri, 2054° / 49°0.13Rain
54 °Rain

South Lyon, Friday, 20 November

Rain. High 54°, low 49°.

Pressure30.33 inHg
Wind6.2 mph W
Humidity89%
Visibility—
Dew point49°
Sat, 2160° / 49°0Overcast
60 °Overcast

South Lyon, Saturday, 21 November

Overcast. High 60°, low 49°.

Pressure30.03 inHg
Wind15.4 mph S
Humidity60%
Visibility—
Dew point44°
Sun, 2251° / 25°0.3Snow
51 °Snow

South Lyon, Sunday, 22 November

Snow. High 51°, low 25°.

Pressure29.59 inHg
Wind18.6 mph NW
Humidity67%
Visibility—
Dew point39°
Mon, 2329° / 22°0Overcast
29 °Overcast

South Lyon, Monday, 23 November

Overcast. High 29°, low 22°.

Pressure30.03 inHg
Wind15.5 mph NW
Humidity53%
Visibility—
Dew point13°
Tue, 2429° / 24°0Overcast
29 °Overcast

South Lyon, Tuesday, 24 November

Overcast. High 29°, low 24°.

Pressure30.12 inHg
Wind12.2 mph NW
Humidity52%
Visibility—
Dew point13°
Wed, 2534° / 23°0.04Light snow
34 °Light snow

South Lyon, Wednesday, 25 November

Light snow. High 34°, low 23°.

Pressure30.18 inHg
Wind17.2 mph SW
Humidity51%
Visibility—
Dew point16°
Thu, 2636° / 28°0Light snow
36 °Light snow

South Lyon, Thursday, 26 November

Light snow. High 36°, low 28°.

Pressure30.03 inHg
Wind14.8 mph W
Humidity70%
Visibility—
Dew point26°
Fri, 2736° / 26°0Overcast
36 °Overcast

South Lyon, Friday, 27 November

Overcast. High 36°, low 26°.

Pressure30.39 inHg
Wind10.8 mph SE
Humidity51%
Visibility—
Dew point18°
Sat, 2846° / 37°0.3Light rain
46 °Light rain

South Lyon, Saturday, 28 November

Light rain. High 46°, low 37°.

Pressure29.68 inHg
Wind20.3 mph SW
Humidity92%
Visibility—
Dew point40°

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.