Yes

you do need a jacket based on the weather in Barrington, IL 60011, USA 1 second ago

Why? Because it's bitterly cold.
47°F8°C & Cloudy

Wind is 2 mph4 km/h from the NE, gusting to 6 mph9 km/h
May 6
3am46°F8°C3 mph4 km/h NECloudy
4am46°F8°C3 mph6 km/h NECloudy
5am45°F7°C3 mph5 km/h NECloudy
6am46°F8°C4 mph6 km/h NECloudy
7am46°F8°C4 mph7 km/h NECloudy
8am48°F9°C4 mph6 km/h EMostly Cloudy
9am52°F11°C5 mph8 km/h EMostly Cloudy
10am57°F14°C6 mph10 km/h EMostly Clear
11am61°F16°C7 mph12 km/h EMostly Clear
12pm64°F18°C9 mph14 km/h EMostly Clear
1pm66°F19°C9 mph15 km/h EMostly Clear
2pm68°F20°C9 mph15 km/h EMostly Clear
DateLowHighWindDayNight
May 645°F7°C70°F21°C8 mph13 km/h from EMostly ClearPartly Cloudy
May 756°F13°C75°F24°C10 mph17 km/h from SRainMostly Clear
May 853°F11°C74°F24°C6 mph10 km/h from SEMostly CloudyRain
May 948°F9°C57°F14°C12 mph20 km/h from NDrizzleMostly Cloudy
May 1044°F7°C56°F13°C6 mph10 km/h from NMostly CloudyPartly Cloudy
May 1144°F6°C61°F16°C7 mph12 km/h from NWDrizzlePartly Cloudy
May 1245°F7°C61°F16°C8 mph13 km/h from NWMostly CloudyMostly Cloudy

Yes

Low of 55°F13°C, High of 75°F24°C
Wind: 10 mph17 km/h
Precipitation: 54% rain

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