Weather forecast for todaySaint Johns, IL

Today
Tomorrow
Long-term
YearJFMAMJJASOctoberND

Weather forecast for today

Current condition 9:38 pm CDT

  • 43°F
  • Feels like:
    43°F
Clear
Clear
  • Precipitation: 0"
  • Wind: 0mphWSW 240°
  • Humidity: 92%
  • Dewpoint: 39°F
  • Pressure: 30.48"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
At the moment, weather conditions are clear, with excellent visibility.
The temperature is a chilly 42.8°F. The current temperature is a few degrees off the lowest anticipated temperature.

Saturday Oct 17, 2026

  • min.
  • 36°F
Clear
Clear
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 2mphESE 104°
  • Humidity: 90%
  • UV index: 0
  • Sunrise: 7:07 am CDT
  • Sunset: 6:16 pm CDT
  • ▼
In Saint Johns, during the remainder of the night, blue skies and clear weather will prevail.
The lowest expected temperature is a cold 35.6°F.
Sunrise was at 7:07 am and sunset at 6:16 pm; the daylight lasted for 11h and 9min.

Hourly overview

Hourly temperatures

Warmest hour: 10 pm 43°C.
Coldest period: 4 am - 6 am 37°C.

Chance of precipitation

Highest chance: 5 am - 6 am 4%.

Hourly weather forecast

  • 10 pm
  • 43°F
  • Feels like:
    43°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 1mphENE 79°
  • Humidity: 93%
  • Pressure: 30.47"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 11 pm
  • 41°F
  • Feels like:
    41°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 1mphE 96°
  • Humidity: 92%
  • Pressure: 30.47"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 12 am
  • 39°F
  • Feels like:
    39°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 0mphESE 103°
  • Humidity: 94%
  • Pressure: 30.47"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 1 am
  • 41°F
  • Feels like:
    41°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 1mphE 96°
  • Humidity: 86%
  • Pressure: 30.47"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 39°F
  • Feels like:
    39°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 1mphESE 104°
  • Humidity: 85%
  • Pressure: 30.47"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 3 am
  • 39°F
  • Feels like:
    39°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 1mphESE 112°
  • Humidity: 87%
  • Pressure: 30.47"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 37°F
  • Feels like:
    37°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 1mphESE 107°
  • Humidity: 88%
  • Pressure: 30.47"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 5 am
  • 37°F
  • Feels like:
    37°F
Clear
Clear
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 1mphESE 118°
  • Humidity: 91%
  • Pressure: 30.47"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 37°F
  • Feels like:
    37°F
Clear
Clear
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 2mphESE 118°
  • Humidity: 91%
  • Pressure: 30.5"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 7 am
  • 37°F
  • Feels like:
    37°F
Clear
Clear
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 2mphESE 121°
  • Humidity: 90%
  • Pressure: 30.5"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Updated: Oct 18, 2026 @ 02:38:23 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Currently (9:38 pm CDT) it is 42.8°F in Saint Johns.

Today, skies will be completely cloud-free.

On Saturday, in Saint Johns, sunrise was at 7:07 am and sunset at 6:16 pm (CDT).

Today in Saint Johns, the length of the day was 11h and 9min.
Today
Tomorrow
Long-term
YearJFMAMJJASOctoberND

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Saint Johns, Illinois, USA

  • en: Saint Johns, Illinois, USA
  • es: Saint Johns, Illinois, EE.UU.
  • hr: Seйnt Džons, Ilinois, SAD
  • mk: Seйnt Džons, Ilinois, SAD
  • sr: Seйnt Džons, Ilinois, SAD
  • zh: Saint Johns, 伊利诺伊, 美国
  • Latitude: 38.031597°
  • Longitude: -89.239589°
  • Elevation: 466 ft
  • Current time: 9:38pm CDT
  • Sunrise: 7:07 am CDT
  • Sunset: 6:16 pm CDT
  • Timezone: America/Chicago

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