Weather Alert
Sandwich Weather Warning NWS WEATHER ALERT FOR THE SANDWICH, IL AREA - FLASH FLOOD WARNING Issued: 509 AM CDT Sun Sep 20 2026 Sandwich Weather Warning

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Sandwich, IL Weather Forecast

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Sandwich, IL Weather Forecast

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Sandwich IL weather - Light Rain - 68°F
Light Rain
68°F
Updated 5:50 am
Feels Like 69°F
Humidity 100%
Wind NE 6 mph
Barometer  29.88 in
Dew Point 68°F
Sandwich IL weather - Light Rain - 20°C
Light Rain
20°C
Updated 5:50 am
Feels Like 21°C
Humidity 100%
Wind NE 10 km/h
Barometer  101.1 kPa
Dew Point 20°C
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Sandwich Weather Forecast

EARLY THIS MORNING TODAY TONIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY
Sandwich, IL Weather - Early This Morning Thunderstorms Sandwich, IL Weather - Today Chance Of T-Storm Sandwich, IL Weather - Tonight Chance Of Showers Sandwich, IL Weather - Monday Chance Of Showers Sandwich, IL Weather - Monday Night Chance Of Showers Sandwich, IL Weather - Tuesday Chance Of Showers Sandwich, IL Weather - Tuesday Night Partly Cloudy Sandwich, IL Weather - Wednesday Partly Cloudy Sandwich, IL Weather - Wednesday Night Partly Cloudy Sandwich, IL Weather - Thursday Partly Cloudy Sandwich, IL Weather - Thursday Night Mostly Cloudy Sandwich, IL Weather - Friday Mostly Cloudy
Thunderstorms Chance of T-Storm Chance of Showers Chance of Showers Chance of Showers Chance of Showers Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Mostly Cloudy Mostly Cloudy
Hi: 65°FHi: 18°C
 Hi: 65°FHi: 18°C
 Lo: 55°FLo: 13°C Hi: 65°FHi: 18°C
 Lo: 51°FLo: 11°C Hi: 61°FHi: 16°C
 Lo: 49°FLo: 9°C Hi: 65°FHi: 18°C
 Lo: 49°FLo: 9°C Hi: 65°FHi: 18°C
 Lo: 50°FLo: 10°C Hi: 69°FHi: 21°C
POP: 100% POP: 100% POP: 30% POP: 30% POP: 30% POP: 20%
POP = Probability of Precipitation.
Weather Outlook Updated: 336 AM CDT Sun Sep 20 2026 Sandwich, IL Weather - WeatherWorld.com

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Issued: 224 AM CDT Sun Sep 20 2026

Key Messages

  • A Flood Watch for flash flooding has been extended through early this afternoon for areas roughly along and north of the Illinois and Kankakee rivers.
  • Periods of showers and thunderstorms with torrential rain and localized flash flooding are expected through midday today.
  • Below normal temps through the end of the week.

Discussion

... Issued at 224 AM CDT Sun Sep 20 2026

The flood watch has been extended until 18z today. Periods of showers and thunderstorms are expected to continue throu...