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As of 11:00 EDT

Weather in South Lyon, MI

58°Current weather

South Lyon, Monday, 26 October, 11:00

Mostly clear. Feels like 57°. High 63°, low 44°.

Pressure30.33 inHg
Wind1 mph W
Humidity73%
Visibility6.2 mi
Dew point50°
Tue, 2759° / 38°0Overcast
59 °Overcast

South Lyon, Tuesday, 27 October

Overcast. High 59°, low 38°.

Pressure30.42 inHg
Wind6 mph E
Humidity52%
Visibility6.2 mi
Dew point36°
Wed, 2868° / 42°0Overcast
68 °Overcast

South Lyon, Wednesday, 28 October

Overcast. High 68°, low 42°.

Pressure30.27 inHg
Wind4.7 mph S
Humidity73%
Visibility6.2 mi
Dew point53°
Thu, 2969° / 51°0Overcast
69 °Overcast

South Lyon, Thursday, 29 October

Overcast. High 69°, low 51°.

Pressure30.09 inHg
Wind9.2 mph SW
Humidity65%
Visibility6.2 mi
Dew point52°
Fri, 3062° / 50°0Overcast
62 °Overcast

South Lyon, Friday, 30 October

Overcast. High 62°, low 50°.

Pressure30.27 inHg
Wind5.7 mph NW
Humidity69%
Visibility—
Dew point48°
Sat, 3162° / 48°0Overcast
62 °Overcast

South Lyon, Saturday, 31 October

Overcast. High 62°, low 48°.

Pressure30.27 inHg
Wind7 mph S
Humidity68%
Visibility—
Dew point49°
Sun, 0156° / 50°0.21Light rain
56 °Light rain

South Lyon, Sunday, 1 November

Light rain. High 56°, low 50°.

Pressure30.09 inHg
Wind8.6 mph SE
Humidity97%
Visibility—
Dew point54°
Mon, 0260° / 55°0.06Light rain
60 °Light rain

South Lyon, Monday, 2 November

Light rain. High 60°, low 55°.

Pressure30.00 inHg
Wind8.1 mph SE
Humidity90%
Visibility—
Dew point56°
Tue, 0358° / 51°0.74Rain
58 °Rain

South Lyon, Tuesday, 3 November

Rain. High 58°, low 51°.

Pressure29.77 inHg
Wind17.6 mph SE
Humidity94%
Visibility—
Dew point55°
Wed, 0449° / 45°0.14Light rain
49 °Light rain

South Lyon, Wednesday, 4 November

Light rain. High 49°, low 45°.

Pressure29.74 inHg
Wind14.8 mph SW
Humidity85%
Visibility—
Dew point44°
Thu, 0551° / 41°0Overcast
51 °Overcast

South Lyon, Thursday, 5 November

Overcast. High 51°, low 41°.

Pressure29.85 inHg
Wind11.3 mph W
Humidity60%
Visibility—
Dew point36°
Fri, 0662° / 44°0.02Light rain
62 °Light rain

South Lyon, Friday, 6 November

Light rain. High 62°, low 44°.

Pressure29.53 inHg
Wind17 mph NW
Humidity46%
Visibility—
Dew point39°
Sat, 0742° / 38°0.3Rain
42 °Rain

South Lyon, Saturday, 7 November

Rain. High 42°, low 38°.

Pressure29.44 inHg
Wind16.7 mph W
Humidity96%
Visibility—
Dew point38°
Sun, 0853° / 42°0Overcast
53 °Overcast

South Lyon, Sunday, 8 November

Overcast. High 53°, low 42°.

Pressure30.00 inHg
Wind13.5 mph N
Humidity79%
Visibility—
Dew point45°
Mon, 0951° / 40°0Partly cloudy
51 °Partly cloudy

South Lyon, Monday, 9 November

Partly cloudy. High 51°, low 40°.

Pressure30.18 inHg
Wind9 mph N
Humidity65%
Visibility—
Dew point38°
Tue, 1054° / 38°0Partly cloudy
54 °Partly cloudy

South Lyon, Tuesday, 10 November

Partly cloudy. High 54°, low 38°.

Pressure30.24 inHg
Wind8.7 mph SW
Humidity47%
Visibility—
Dew point31°

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.