Yes

you do need a jacket based on the weather in South Lyon, MI 48178, USA 1 second ago

Why? Because there's a refreshing nip in the air and it's so windy, even the squirrels are holding onto branches for dear life!
44°F7°C & Clear

Wind is 12 mph19 km/h from the East, gusting to 24 mph38 km/h
October 29
3am44°F7°C12 mph20 km/h EastClear
4am43°F6°C12 mph19 km/h EastClear
5am42°F6°C10 mph16 km/h EastClear
6am42°F5°C10 mph15 km/h EastMostly Clear
7am41°F5°C9 mph14 km/h EastMostly Clear
8am40°F5°C8 mph12 km/h EastMostly Clear
9am40°F4°C8 mph12 km/h EastMostly Clear
10am39°F4°C8 mph12 km/h EastMostly Clear
11am39°F4°C8 mph13 km/h NortheastMostly Clear
12pm39°F4°C8 mph13 km/h NortheastMostly Clear
1pm40°F5°C9 mph14 km/h NortheastMostly Clear
2pm44°F7°C11 mph17 km/h EastMostly Clear
DateLowHighWindDayNight
October 2839°F4°C56°F13°C7 mph12 km/h from EastClearClear
October 2939°F4°C55°F13°C11 mph17 km/h from EastMostly ClearMostly Cloudy
October 3041°F5°C51°F11°C12 mph19 km/h from NorthDrizzlePartly Cloudy
October 3136°F2°C51°F11°C13 mph21 km/h from NorthwestPartly CloudyMostly Cloudy
November 137°F3°C49°F9°C7 mph11 km/h from NorthwestMostly CloudyMostly Cloudy
November 234°F1°C52°F11°C7 mph11 km/h from SouthwestMostly CloudyMostly Cloudy
November 342°F5°C54°F12°C15 mph23 km/h from WestPartly CloudyMostly Clear

Yes

Low of 38°F4°C, High of 55°F13°C
Wind: 11 mph17 km/h
Precipitation: None

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