South Lyon climate

South Lyon Weather in August

NOAA 1991-2020 normals for Whitmore Lake 1NW, 11.1 km from South Lyon

Average highs run from 81°F on August 1 to 77°F on August 31, and lows from 59°F to 55°F. Normal precipitation for the month is 3.34 in.

August day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at South Lyon, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
79°F
Average low
58°F
Precipitation
3.34 in
Record high
99°FAug 2, 1964
Record low
40°FAug 29, 1965
Chance of a freeze
0%
Days of 90°F or more
0.7
Daylight
14 h 27 min to 13 h 11 min
Cloud cover
54%
Humidity
72%
Dew point
60°F
Wind
8.1 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Aug 181°F59°F96°F 195554°F 19580%
Aug 281°F59°F99°F 196451°F 19620%
Aug 381°F59°F99°F 201246°F 19650%
Aug 481°F59°F97°F 201649°F 20000%
Aug 581°F59°F93°F 195549°F 19570%
Aug 680°F59°F94°F 200149°F 19640%
Aug 780°F59°F96°F 200151°F 20020%
Aug 880°F59°F99°F 200150°F 19640%
Aug 980°F59°F96°F 194945°F 19640%
Aug 1080°F59°F99°F 201647°F 19640%
Aug 1180°F59°F99°F 201644°F 19670%
Aug 1280°F59°F98°F 201643°F 19670%
Aug 1380°F59°F92°F 195946°F 19670%
Aug 1479°F59°F93°F 196543°F 19640%
Aug 1579°F58°F94°F 196547°F 19640%
Aug 1679°F58°F92°F 200948°F 19640%
Aug 1779°F58°F94°F 195051°F 19630%
Aug 1879°F58°F94°F 195545°F 19630%
Aug 1979°F58°F99°F 195547°F 19640%
Aug 2079°F58°F93°F 195544°F 20000%
Aug 2179°F58°F98°F 195543°F 19500%
Aug 2279°F57°F94°F 195947°F 20040%
Aug 2378°F57°F94°F 195446°F 19670%
Aug 2478°F57°F97°F 194848°F 19650%
Aug 2578°F57°F98°F 194848°F 20170%
Aug 2678°F57°F96°F 194847°F 20170%
Aug 2778°F56°F99°F 194846°F 19640%
Aug 2878°F56°F96°F 194844°F 19680%
Aug 2978°F56°F97°F 195340°F 19650%
Aug 3078°F56°F95°F 195347°F 19990%
Aug 3177°F55°F97°F 201244°F 20090%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at South Lyon, in percent, and of at least 0.1 inch of snowfall.00.21102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EDT).

August 1
sunrise 6:27 AM, sunset 8:54 PM
August 31
sunrise 6:59 AM, sunset 8:10 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00208972 (Whitmore Lake 1NW), public domain. Records: NOAA GHCN-Daily, station USW00014853, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.