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Arrowsmith, IL Weather Forecast

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Arrowsmith, IL Weather Forecast

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Arrowsmith IL weather - Clear - 55°F
Clear
55°F
Updated 12:19 am
Feels Like 55°F
Humidity 86%
Wind ESE 7 mph
Barometer  30.06 in
Dew Point 51°F
Arrowsmith IL weather - Clear - 13°C
Clear
13°C
Updated 12:19 am
Feels Like 13°C
Humidity 86%
Wind ESE 11 km/h
Barometer  101.7 kPa
Dew Point 11°C
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Arrowsmith Weather Forecast

REST OF TONIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT SUNDAY
Arrowsmith, IL Weather - Rest Of Tonight Mostly Clear Arrowsmith, IL Weather - Tuesday Sunny Arrowsmith, IL Weather - Tuesday Night Partly Cloudy Arrowsmith, IL Weather - Wednesday Partly Sunny Arrowsmith, IL Weather - Wednesday Night Mostly Cloudy Arrowsmith, IL Weather - Thursday Showers Likely Arrowsmith, IL Weather - Thursday Night Chance Of T-Storm Arrowsmith, IL Weather - Friday Chance Of Showers Arrowsmith, IL Weather - Friday Night Chance Of Showers Arrowsmith, IL Weather - Saturday Chance Of Showers Arrowsmith, IL Weather - Saturday Night Mostly Cloudy Arrowsmith, IL Weather - Sunday Partly Cloudy
Mostly Clear Sunny Partly Cloudy Partly Sunny Mostly Cloudy Showers Likely Chance of T-Storm Chance of Showers Chance of Showers Chance of Showers Mostly Cloudy Partly Cloudy
Lo: 50°FLo: 10°C Hi: 81°FHi: 27°C
 Lo: 61°FLo: 16°C Hi: 81°FHi: 27°C
 Lo: 69°FLo: 21°C Hi: 79°FHi: 26°C
 Lo: 59°FLo: 15°C Hi: 69°FHi: 21°C
 Lo: 51°FLo: 11°C Hi: 69°FHi: 21°C
 Lo: 51°FLo: 11°C Hi: 69°FHi: 21°C
Lo: 49°FLo: 9°C
POP: 70% POP: 70% POP: 70% POP: 30% POP: 40%
POP = Probability of Precipitation.
Weather Outlook Updated: 822 PM CDT Mon Sep 28 2026 Arrowsmith, IL Weather - WeatherWorld.com

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Issued: 1155 PM CDT Mon Sep 28 2026

Key Messages

  • Quiet and nice early fall weather is expected to continue across central and southeast IL through Tuesday night as temperatures continue to modify.
  • A chance of showers and isolated thunderstorms will occur over the IL river valley Wednesday and Wednesday night, with more widespread rain over the area on Thursday into Friday:
  • NBM has 50-70% chance of rainfall totals over 1.5 inches over central and southeast IL from Wednesday night through Friday night, with southeast IL seeing their ...