As of 23:17 EST

Weather in South Lyon, MI

49°

South Lyon, Thursday, 5 November, 23:17

Light rain. Feels like 48°. High 57°, low 49°.

Pressure29.83 inHg

Wind3 mph NW

Humidity94%

Visibility2.9 mi

Dew point47°

See detailed hourly forecast

Fri, 0649° / 40°

0.03

49 °

South Lyon, Friday, 6 November

Light rain. High 49°, low 40°.

Pressure30.00 inHg

Wind11.7 mph NW

Humidity65%

Visibility6.2 mi

Dew point33°

Sat, 0748° / 38°

48 °

South Lyon, Saturday, 7 November

Overcast. High 48°, low 38°.

Pressure30.12 inHg

Wind10.5 mph NW

Humidity65%

Visibility6.2 mi

Dew point35°

Sun, 0856° / 37°

56 °

South Lyon, Sunday, 8 November

Overcast. High 56°, low 37°.

Pressure29.88 inHg

Wind13.1 mph W

Humidity73%

Visibility6.2 mi

Dew point44°

Mon, 0953° / 39°

53 °

South Lyon, Monday, 9 November

Overcast. High 53°, low 39°.

Pressure30.12 inHg

Wind7.5 mph W

Humidity59%

Visibility6.2 mi

Dew point36°

Tue, 1059° / 44°

59 °

South Lyon, Tuesday, 10 November

Clear. High 59°, low 44°.

Pressure29.94 inHg

Wind10.6 mph SW

Humidity57%

Visibility—

Dew point42°

Wed, 1152° / 38°

52 °

South Lyon, Wednesday, 11 November

Overcast. High 52°, low 38°.

Pressure29.94 inHg

Wind10.5 mph NW

Humidity52%

Visibility—

Dew point33°

Thu, 1240° / 28°

40 °

South Lyon, Thursday, 12 November

Overcast. High 40°, low 28°.

Pressure30.03 inHg

Wind9.9 mph N

Humidity42%

Visibility—

Dew point17°

Fri, 1336° / 27°

0.07

36 °

South Lyon, Friday, 13 November

Light snow. High 36°, low 27°.

Pressure29.94 inHg

Wind12.3 mph N

Humidity54%

Visibility—

Dew point20°

Sat, 1439° / 24°

39 °

South Lyon, Saturday, 14 November

Partly cloudy. High 39°, low 24°.

Pressure30.15 inHg

Wind11.3 mph NW

Humidity48%

Visibility—

Dew point18°

Sun, 1549° / 37°

49 °

South Lyon, Sunday, 15 November

Overcast. High 49°, low 37°.

Pressure30.30 inHg

Wind12.1 mph NW

Humidity57%

Visibility—

Dew point31°

Mon, 1656° / 35°

56 °

South Lyon, Monday, 16 November

Overcast. High 56°, low 35°.

Pressure30.27 inHg

Wind16.5 mph SW

Humidity37%

Visibility—

Dew point27°

Tue, 1756° / 42°

56 °

South Lyon, Tuesday, 17 November

Overcast. High 56°, low 42°.

Pressure30.33 inHg

Wind13.8 mph W

Humidity43%

Visibility—

Dew point32°

Wed, 1857° / 43°

0.01

57 °

South Lyon, Wednesday, 18 November

Light rain. High 57°, low 43°.

Pressure30.06 inHg

Wind17.6 mph SW

Humidity42%

Visibility—

Dew point32°

Thu, 1952° / 39°

0.02

52 °

South Lyon, Thursday, 19 November

Light rain. High 52°, low 39°.

Pressure30.09 inHg

Wind13.6 mph W

Humidity64%

Visibility—

Dew point39°

Fri, 2047° / 37°

0.15

47 °

South Lyon, Friday, 20 November

Light rain. High 47°, low 37°.

Pressure30.12 inHg

Wind5.9 mph E

Humidity50%

Visibility—

Dew point28°

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.