Yes

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

Why? Because it's not very warm out.
59°F15°C & Cloudy

Wind is 10 mph16 km/h from the E, gusting to 16 mph26 km/h
April 18
1pm60°F16°C10 mph16 km/h ECloudy
2pm63°F17°C11 mph18 km/h ECloudy
3pm66°F19°C12 mph20 km/h ECloudy
4pm69°F20°C10 mph16 km/h SECloudy
5pm69°F21°C8 mph13 km/h ECloudy
6pm66°F19°C9 mph15 km/h NCloudy
7pm59°F15°C16 mph26 km/h NHeavy Rain
8pm55°F13°C19 mph31 km/h NRain
9pm53°F12°C17 mph28 km/h NRain
10pm51°F11°C17 mph27 km/h NDrizzle
11pm50°F10°C14 mph23 km/h NCloudy
April 19
12am49°F10°C13 mph21 km/h NMostly Cloudy
DateLowHighWindDayNight
April 1846°F8°C70°F21°C10 mph16 km/h from EHeavy RainRain
April 1941°F5°C59°F15°C11 mph18 km/h from NWPartly CloudyMostly Cloudy
April 2039°F4°C54°F12°C12 mph20 km/h from NWMostly ClearPartly Cloudy
April 2135°F1°C59°F15°C8 mph13 km/h from NWMostly ClearClear
April 2236°F2°C64°F18°C9 mph14 km/h from SWPartly CloudyCloudy
April 2350°F10°C66°F19°C13 mph21 km/h from SWRainPartly Cloudy
April 2440°F4°C60°F15°C8 mph13 km/h from NEMostly ClearMostly Clear

Yes

Low of 41°F5°C, High of 59°F15°C
Wind: 11 mph18 km/h
Precipitation: None

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