May weather in South Lyon, MI
The average temperature in South Lyon in May is 56.8°F (44.8°F–68.8°F). Average precipitation: 3.65 inches.
May is a spring month in South Lyon, and is warmer than the annual average of 47.1°F. Daily temperatures swing about 24°F between overnight low and afternoon high. Daylight averages about 14h 25m. For travel, May is a comfortable month to visit.
Avg High
68.8°F
Avg Low
44.8°F
Precipitation
3.65 in
Daylight
14h 25m
May records in South Lyon
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 80.1°F (2010) | 27.0°F (2008) | 0.88 in (2019) |
| May 2 | 84.0°F (2018) | 34.0°F (2023) | 0.48 in (2010) |
| May 3 | 84.0°F (2018) | 35.1°F (2017) | 1.14 in (2010) |
| May 4 | 88.0°F (2012) | 33.1°F (2023) | 0.95 in (2018) |
| May 5 | 78.1°F (2015) | 36.0°F (2022) | 1.70 in (2025) |
| May 6 | 78.1°F (2018) | 32.0°F (2021) | 0.46 in (2015) |
| May 7 | 75.0°F (2008) | 33.1°F (2017) | 0.75 in (2025) |
| May 8 | 82.9°F (2015) | 28.9°F (2017) | 0.90 in (2010) |
| May 9 | 86.0°F (2014) | 26.1°F (2020) | 0.13 in (2015) |
| May 10 | 80.1°F (2015) | 27.0°F (2020) | 0.30 in (2018) |
| May 11 | 81.0°F (2022) | 30.0°F (2010) | 0.53 in (2015) |
| May 12 | 80.1°F (2022) | 28.9°F (2020) | 2.00 in (2018) |
| May 13 | 86.0°F (2022) | 26.1°F (2013) | 3.13 in (2014) |
| May 14 | 84.9°F (2022) | 27.0°F (2013) | 0.69 in (2009) |
| May 15 | 84.0°F (2022) | 33.1°F (2016) | 1.17 in (2020) |
| May 16 | 84.9°F (2022) | 33.1°F (2016) | 1.30 in (2009) |
| May 17 | 86.0°F (2017) | 34.0°F (2009) | 0.23 in (2024) |
| May 18 | 84.9°F (2017) | 33.1°F (2009) | 1.10 in (2024) |
| May 19 | 86.0°F (2017) | 33.1°F (2009) | 1.64 in (2020) |
| May 20 | 87.1°F (2024) | 36.0°F (2008) | 0.80 in (2019) |
| May 21 | 89.1°F (2013) | 37.0°F (2019) | 1.67 in (2017) |
| May 22 | 86.0°F (2021) | 39.0°F (2019) | 0.98 in (2010) |
| May 23 | 84.9°F (2021) | 35.1°F (2015) | 0.35 in (2019) |
| May 24 | 86.0°F (2021) | 37.0°F (2013) | 0.27 in (2011) |
| May 25 | 84.9°F (2016) | 34.0°F (2013) | 0.26 in (2024) |
| May 26 | 87.1°F (2018) | 34.0°F (2013) | 2.53 in (2011) |
| May 27 | 88.0°F (2020) | 35.1°F (2013) | 0.42 in (2012) |
| May 28 | 91.0°F (2018) | 30.9°F (2008) | 0.70 in (2022) |
| May 29 | 93.0°F (2018) | 32.0°F (2008) | 0.71 in (2024) |
| May 30 | 88.0°F (2018) | 34.0°F (2021) | 0.17 in (2011) |
| May 31 | 88.0°F (2011) | 37.9°F (2009) | 2.43 in (2015) |