As of 03:32 EST

Weather in South Lyon, MI

34°

South Lyon, Sunday, 8 November, 03:32

Overcast. Feels like 34°. High 52°, low 34°.

Pressure30.00 inHg

Wind1 mph SW

Humidity92%

Visibility6.2 mi

Dew point32°

See detailed hourly forecast

Mon, 0949° / 41°

49 °

South Lyon, Monday, 9 November

Overcast. High 49°, low 41°.

Pressure30.09 inHg

Wind6.8 mph NW

Humidity61%

Visibility6.2 mi

Dew point37°

Tue, 1057° / 42°

57 °

South Lyon, Tuesday, 10 November

Clear. High 57°, low 42°.

Pressure29.97 inHg

Wind9.3 mph W

Humidity65%

Visibility6.2 mi

Dew point44°

Wed, 1153° / 37°

0.08

53 °

South Lyon, Wednesday, 11 November

Light rain. High 53°, low 37°.

Pressure29.88 inHg

Wind4.1 mph S

Humidity65%

Visibility6.2 mi

Dew point40°

Thu, 1243° / 35°

0.17

43 °

South Lyon, Thursday, 12 November

Light rain. High 43°, low 35°.

Pressure29.74 inHg

Wind16.3 mph N

Humidity75%

Visibility—

Dew point35°

Fri, 1339° / 32°

0.01

39 °

South Lyon, Friday, 13 November

Snow. High 39°, low 32°.

Pressure29.80 inHg

Wind14.4 mph NW

Humidity71%

Visibility—

Dew point30°

Sat, 1440° / 32°

40 °

South Lyon, Saturday, 14 November

Overcast. High 40°, low 32°.

Pressure29.85 inHg

Wind16.2 mph NW

Humidity63%

Visibility—

Dew point26°

Sun, 1548° / 32°

48 °

South Lyon, Sunday, 15 November

Overcast. High 48°, low 32°.

Pressure30.00 inHg

Wind10 mph NW

Humidity43%

Visibility—

Dew point23°

Mon, 1648° / 33°

48 °

South Lyon, Monday, 16 November

Mostly clear. High 48°, low 33°.

Pressure30.18 inHg

Wind7.3 mph N

Humidity47%

Visibility—

Dew point26°

Tue, 1747° / 33°

47 °

South Lyon, Tuesday, 17 November

Clear. High 47°, low 33°.

Pressure30.27 inHg

Wind6.1 mph SE

Humidity57%

Visibility—

Dew point30°

Wed, 1849° / 35°

49 °

South Lyon, Wednesday, 18 November

Overcast. High 49°, low 35°.

Pressure30.27 inHg

Wind8.7 mph S

Humidity53%

Visibility—

Dew point30°

Thu, 1954° / 46°

0.5

54 °

South Lyon, Thursday, 19 November

Rain. High 54°, low 46°.

Pressure30.09 inHg

Wind8.1 mph S

Humidity98%

Visibility—

Dew point52°

Fri, 2060° / 51°

0.27

60 °

South Lyon, Friday, 20 November

Rain. High 60°, low 51°.

Pressure29.97 inHg

Wind19.2 mph S

Humidity70%

Visibility—

Dew point49°

Sat, 2156° / 41°

0.09

56 °

South Lyon, Saturday, 21 November

Light rain. High 56°, low 41°.

Pressure29.68 inHg

Wind23.7 mph NW

Humidity88%

Visibility—

Dew point41°

Sun, 2246° / 31°

0.02

46 °

South Lyon, Sunday, 22 November

Light rain. High 46°, low 31°.

Pressure30.24 inHg

Wind14 mph NW

Humidity49%

Visibility—

Dew point23°

Mon, 2348° / 39°

48 °

South Lyon, Monday, 23 November

Overcast. High 48°, low 39°.

Pressure29.74 inHg

Wind14.5 mph NW

Humidity58%

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.