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Illinois Weather on Wednesday, October 21, 2026

  1. TodayOctober 1921° 4°
  2. TomorrowOctober 2022° 6°
  3. WedOctober 2123° 11°
  4. ThuOctober 2224° 12°
  5. FriOctober 2324° 12°
  6. SatOctober 2424° 12°
  7. SunOctober 2521° 12°
  8. MonOctober 2619° 10°
  9. TueOctober 2718° 13°
  10. WedOctober 2814° 13°
  11. ThuOctober 2919° 13°
  12. FriOctober 3023° 16°
  13. SatOctober 3118° 13°
  14. SunNovember 116° 7°

Illinois · Wednesday, October 21 2026

23°11°

Clear

High 23°, low 11°

Chance of rain
0%
No rain
Wind
11 km/h
southeast
UV index
5
Moderate
Sunrise
07:13
Sunset 18:08
Day length
10 h 55 min
Moon
Waxing gibbous
81% illuminated

Updated: · Source: Open-Meteo

Forecast for Illinois on Wednesday, October 21, 2026: clear, with a high of 23°C and a low of 11°C. No significant rain is expected (0% chance). Wind from the southeast at up to 11 km/h. Sunrise is at 07:13 and sunset at 18:08; day length 10 h 55 min. Temperatures similar to the previous day. Temperatures are close to the 7-day average. The best time to be outdoors looks like 08:00–21:00.

What to wear and what to watch out for

  • Cool in the morning and evening: dress in layers and bring a sweater or jacket.
  • A good day for outdoor activities.

Wednesday, October 21: hour by hour

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Weather nearby on October 21

Frequently asked questions

Will it rain in Illinois on Wednesday, October 21, 2026?
Most likely not: the chance of rain is 0%.
What will the temperature be in Illinois on Wednesday, October 21, 2026?
A high of 23°C and a low of 11°C are expected. Conditions: clear.
What time are sunrise and sunset in Illinois on October 21, 2026?
Sunrise is at 07:13 and sunset at 18:08 (local time); day length 10 h 55 min.
How reliable is this forecast?
Forecasts for the first 3 days are usually highly accurate; this page is updated about every 30 minutes.

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