As of 03:07 EST

Weather in South Lyon, MI

42°

South Lyon, Monday, 9 November, 03:07

Clear. Feels like 42°. High 53°, low 39°.

Pressure29.94 inHg

Wind2 mph NW

Humidity85%

Visibility6.2 mi

Dew point38°

See detailed hourly forecast

Tue, 1059° / 43°

59 °

South Lyon, Tuesday, 10 November

Clear. High 59°, low 43°.

Pressure29.97 inHg

Wind7.1 mph W

Humidity63%

Visibility6.2 mi

Dew point44°

Wed, 1152° / 39°

0.07

52 °

South Lyon, Wednesday, 11 November

Light rain. High 52°, low 39°.

Pressure29.94 inHg

Wind4.1 mph SW

Humidity66%

Visibility6.2 mi

Dew point40°

Thu, 1247° / 36°

47 °

South Lyon, Thursday, 12 November

Mostly clear. High 47°, low 36°.

Pressure29.83 inHg

Wind9.2 mph NE

Humidity64%

Visibility6.2 mi

Dew point34°

Fri, 1340° / 33°

0.02

40 °

South Lyon, Friday, 13 November

Light rain. High 40°, low 33°.

Pressure29.94 inHg

Wind11 mph N

Humidity75%

Visibility—

Dew point31°

Sat, 1441° / 28°

41 °

South Lyon, Saturday, 14 November

Overcast. High 41°, low 28°.

Pressure30.00 inHg

Wind12.1 mph NW

Humidity67%

Visibility—

Dew point28°

Sun, 1542° / 31°

42 °

South Lyon, Sunday, 15 November

Overcast. High 42°, low 31°.

Pressure30.00 inHg

Wind13.3 mph NW

Humidity59%

Visibility—

Dew point26°

Mon, 1644° / 30°

44 °

South Lyon, Monday, 16 November

Clear. High 44°, low 30°.

Pressure30.24 inHg

Wind9.4 mph N

Humidity53%

Visibility—

Dew point26°

Tue, 1749° / 35°

49 °

South Lyon, Tuesday, 17 November

Clear. High 49°, low 35°.

Pressure30.39 inHg

Wind5.1 mph S

Humidity59%

Visibility—

Dew point33°

Wed, 1853° / 37°

0.02

53 °

South Lyon, Wednesday, 18 November

Light rain. High 53°, low 37°.

Pressure30.24 inHg

Wind8.5 mph S

Humidity46%

Visibility—

Dew point31°

Thu, 1953° / 41°

0.32

53 °

South Lyon, Thursday, 19 November

Rain. High 53°, low 41°.

Pressure30.09 inHg

Wind10.8 mph W

Humidity47%

Visibility—

Dew point33°

Fri, 2048° / 38°

48 °

South Lyon, Friday, 20 November

Overcast. High 48°, low 38°.

Pressure30.24 inHg

Wind8.5 mph W

Humidity58%

Visibility—

Dew point33°

Sat, 2145° / 35°

0.24

45 °

South Lyon, Saturday, 21 November

Rain. High 45°, low 35°.

Pressure30.21 inHg

Wind13.8 mph NW

Humidity55%

Visibility—

Dew point29°

Sun, 2243° / 32°

43 °

South Lyon, Sunday, 22 November

Clear. High 43°, low 32°.

Pressure30.47 inHg

Wind9.4 mph SE

Humidity46%

Visibility—

Dew point22°

Mon, 2352° / 35°

52 °

South Lyon, Monday, 23 November

Overcast. High 52°, low 35°.

Pressure30.27 inHg

Wind11 mph S

Humidity51%

Visibility—

Dew point31°

Tue, 2455° / 47°

0.01

55 °

South Lyon, Tuesday, 24 November

Light rain. High 55°, low 47°.

Pressure30.24 inHg

Wind9.7 mph S

Humidity66%

Visibility—

Dew point43°

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.