Weather forecast for todaySaint Johns, IL
Weather forecast for today
Current condition 12:15 am CDT
- 39°F
- Feels like:39°F
Clear
- Precipitation: 0"
- Wind: 0mphW 280°
- Humidity: 100%
- Dewpoint: 39°F
- Pressure: 30.49"Hg
- Visibility: 9mi
- UV index: 0
- details ▼
Currently, skies are clear and bright, offering ideal outdoor conditions.
The temperature is an icy 39.2°F. The current temperature is at the minimum anticipated for today.
The temperature is an icy 39.2°F. The current temperature is at the minimum anticipated for today.
Sunday Oct 18, 2026
- 66°F
- 39°F
Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 6mphSE 140°
- Humidity: 52%
- UV index: 5
- Sunrise: 7:08 am CDT
- Sunset: 6:15 pm CDT
- details ▼
On Sunday, October 18, bright and sunny weather is expected.
The day's temperature range will span from a high of an enjoyable 66.2°F to a minimum of a cold 39.2°F.
The highest temperature for today is predicted to reflect October's average of 67.1°F.
Sunrise will be at 7:08 am and sunset at 6:15 pm; the daylight will last for 11h and 7min.
The day's temperature range will span from a high of an enjoyable 66.2°F to a minimum of a cold 39.2°F.
The highest temperature for today is predicted to reflect October's average of 67.1°F.
Sunrise will be at 7:08 am and sunset at 6:15 pm; the daylight will last for 11h and 7min.
Hourly overview
Hourly temperatures
Warmest hour: 4 pm 66°C.
Coldest period: 4 am - 7 am 37°C.
Coldest period: 4 am - 7 am 37°C.
Chance of precipitation
Highest chance: 7 am 3%.
Hourly weather forecast
- 2 am
- 39°F
- Feels like:39°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 1mphESE 103°
- Humidity: 100%
- Pressure: 30.47"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 4 am
- 37°F
- Feels like:37°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 1mphESE 107°
- Humidity: 90%
- Pressure: 30.47"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 6 am
- 37°F
- Feels like:37°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 2mphESE 116°
- Humidity: 92%
- Pressure: 30.47"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunrise: 7:08 am
- 8 am
- 39°F
- Feels like:39°F
Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 2mphESE 122°
- Humidity: 89%
- Pressure: 30.5"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 am
- 52°F
- Feels like:52°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 5mphSE 141°
- Humidity: 60%
- Pressure: 30.5"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 12 pm
- 59°F
- Feels like:59°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 6mphSSE 147°
- Humidity: 43%
- Pressure: 30.47"Hg
- Visibility: 10mi
- UV index: 5
- details ▼
- 2 pm
- 64°F
- Feels like:64°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 6mphSSE 148°
- Humidity: 37%
- Pressure: 30.42"Hg
- Visibility: 10mi
- UV index: 4
- details ▼
- 4 pm
- 66°F
- Feels like:66°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 6mphSSE 147°
- Humidity: 33%
- Pressure: 30.36"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 6 pm
- 61°F
- Feels like:61°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 4mphSE 128°
- Humidity: 42%
- Pressure: 30.36"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:15 pm
- 8 pm
- 52°F
- Feels like:52°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 2mphESE 111°
- Humidity: 66%
- Pressure: 30.36"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 48°F
- Feels like:48°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 2mphESE 116°
- Humidity: 78%
- Pressure: 30.36"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Today, in Saint Johns, mostly cloudless and sunny weather is anticipated.
The temperature will vary between a minimum of 37.4°F and a maximum of 66.2°F. The warmest part of the day is expected around 4 pm.
The maximum temperature will be consistent with the average high of 67.1°F in October. Today, expect the temperature to be more consistent with the typical minimum for November than for October.
The temperature will vary between a minimum of 37.4°F and a maximum of 66.2°F. The warmest part of the day is expected around 4 pm.
The maximum temperature will be consistent with the average high of 67.1°F in October. Today, expect the temperature to be more consistent with the typical minimum for November than for October.
Updated: Oct 18, 2026 @ 05:15:34 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
Currently (12:15 am CDT) it is 39.2°F in Saint Johns.
Today, sunshine and minimal clouds are in the outlook.
Today, the highest temperature will be 66.2°F, while the lowest temperature will be 39.2°F.
The maximum temperature today will be in line with the average highest temperature in October. Today, the lowest temperature will be uncommonly lower than the average low of 49.3°F.
The maximum temperature today will be in line with the average highest temperature in October. Today, the lowest temperature will be uncommonly lower than the average low of 49.3°F.
On Sunday, in Saint Johns, sunrise will be at 7:08 am and sunset at 6:15 pm (CDT).
Today, the daylight will last for 11h and 7min.
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: 12:15am CDT
- Sunrise: 7:08 am CDT
- Sunset: 6:15 pm CDT
- Timezone: America/Chicago
Nearby Saint Johns, Illinois, USA
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