Jacksonville, IL Weather Forecast

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Jacksonville, IL Weather Forecast

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Jacksonville IL weather  - Overcast - 66°F
Overcast
66°F
Updated 11:55 pm
Feels Like 61°F
Humidity 100%
Wind NE 10 mph
Barometer  30 in
Dew Point 66°F
Jacksonville IL weather  - Overcast - 19°C
Overcast
19°C
Updated 11:55 pm
Feels Like 16°C
Humidity 100%
Wind NE 16 km/h
Barometer  101.5 kPa
Dew Point 19°C

Jacksonville Weather Forecast

REST OF TONIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY SATURDAY SUNDAY
Jacksonville, IL Weather - Rest Of Tonight Chance Of T-Storm Jacksonville, IL Weather - Monday Chance Of T-Storm Jacksonville, IL Weather - Monday Night Mostly Cloudy Jacksonville, IL Weather - Tuesday Mostly Cloudy Jacksonville, IL Weather - Tuesday Night Partly Cloudy Jacksonville, IL Weather - Wednesday Sunny Jacksonville, IL Weather - Wednesday Night Partly Cloudy Jacksonville, IL Weather - Thursday Partly Cloudy Jacksonville, IL Weather - Thursday Night Mostly Cloudy Jacksonville, IL Weather - Friday Mostly Cloudy Jacksonville, IL Weather - Saturday Mostly Cloudy Jacksonville, IL Weather - Sunday Partly Sunny
Chance of T-Storm Chance of T-Storm Mostly Cloudy Mostly Cloudy Partly Cloudy Sunny Partly Cloudy Partly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Partly Sunny
Lo: 61°FLo: 16°C Hi: 69°FHi: 21°C
Lo: 59°FLo: 15°C Hi: 69°FHi: 21°C
Lo: 50°FLo: 10°C Hi: 71°FHi: 22°C
Hi: 71°FHi: 22°C
Lo: 51°FLo: 11°C
Hi: 71°FHi: 22°C
Lo: 51°FLo: 11°C
Hi: 75°FHi: 24°C
Lo: 55°FLo: 13°C
Hi: 75°FHi: 24°C
Lo: 55°FLo: 13°C
Hi: 75°FHi: 24°C
Lo: 55°FLo: 13°C
Hi: 81°FHi: 27°C
POP: 40% POP: 30%
POP = Probability of Precipitation.
Weather Outlook Updated: 1052 PM CDT Sun Sep 20 2026 Jacksonville, IL Weather - WeatherWorld.com

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Jacksonville Forecast Discussion

Meteorlogic Glosserator
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Issued: 550 PM CDT Sun Sep 20 2026

Key Messages

  • A Marginal Risk (level 1 of 5) of severe weather exists near and south of the I-72 corridor today. The primary risk will be isolated strong wind gusts during the afternoon and early evening.
  • Much cooler weather will be on tap this week as high temperatures drop into the 60s everywhere north of I-70 Monday through Wednesday.

Discussion

... Issued at 215 PM CDT Sun Sep 20 2026

NEAR TERM /THROUGH TONIGHT/

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