Weather forecast for tomorrowSaint Johns, IL
Weather forecast for tomorrow
Monday Oct 19, 2026
- 72°F
- 43°F
Mostly Sunny
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 4mphSSE 164°
- Humidity: 55%
- UV index: 5
- Sunrise: 7:09 am CDT
- Sunset: 6:14 pm CDT
- details ▼
Tomorrow, in Saint Johns, sunshine will prevail for most of the day.
Significant variations in temperature are forecasted, peaking at a pleasant 71.6°F and dropping to a low of a brisk 42.8°F.
The daily maximum temperature is predicted to be moderately higher than October's climate average of 67.1°F.
Sunrise will be at 7:09 am and sunset at 6:14 pm; tomorrow's daylight will last for 11h and 4min.
Significant variations in temperature are forecasted, peaking at a pleasant 71.6°F and dropping to a low of a brisk 42.8°F.
The daily maximum temperature is predicted to be moderately higher than October's climate average of 67.1°F.
Sunrise will be at 7:09 am and sunset at 6:14 pm; tomorrow's daylight will last for 11h and 4min.
Hourly overview
Hourly temperatures
Warmest hour: 3 pm 70°C.
Coldest hour: 6 am 39°C.
Coldest hour: 6 am 39°C.
Chance of precipitation
Highest chance: 6 am 7%.
Hourly weather forecast
- 12 am
- 45°F
- Feels like:45°F
Clear
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 1mphSE 137°
- Humidity: 88%
- Pressure: 30.36"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 2 am
- 43°F
- Feels like:43°F
Clear
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 1mphSE 130°
- Humidity: 93%
- Pressure: 30.39"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 4 am
- 39°F
- Feels like:39°F
Clear
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 0mphESE 123°
- Humidity: 98%
- Pressure: 30.36"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 6 am
- 39°F
- Feels like:39°F
Clear
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 0mphSE 125°
- Humidity: 100%
- Pressure: 30.39"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunrise: 7:09 am
- 8 am
- 43°F
- Feels like:43°F
Sunny
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 0mphSE 126°
- Humidity: 99%
- Pressure: 30.42"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 am
- 57°F
- Feels like:57°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 2mphSSE 157°
- Humidity: 63%
- Pressure: 30.42"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 12 pm
- 66°F
- Feels like:66°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 2mphS 189°
- Humidity: 44%
- Pressure: 30.39"Hg
- Visibility: 10mi
- UV index: 5
- details ▼
- 2 pm
- 70°F
- Feels like:70°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 3mphS 183°
- Humidity: 36%
- Pressure: 30.33"Hg
- Visibility: 10mi
- UV index: 4
- details ▼
- 4 pm
- 70°F
- Feels like:70°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 4mphS 172°
- Humidity: 35%
- Pressure: 30.3"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 6 pm
- 64°F
- Feels like:64°F
Mostly Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 2mphSE 135°
- Humidity: 44%
- Pressure: 30.3"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:14 pm
- 8 pm
- 55°F
- Feels like:55°F
Mostly Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 1mphE 86°
- Humidity: 67%
- Pressure: 30.3"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 52°F
- Feels like:52°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 1mphE 80°
- Humidity: 79%
- Pressure: 30.3"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Tomorrow, on Monday, primarily dry and sunny and occasionally cloudy weather is forecasted.
The temperature will be between the lowest temperature of 39.2°F and the highest temperature of 69.8°F. The warmest part of the day will be from 2 pm to 5 pm.
The maximum temperature will be a few degrees higher than October's average high of 67.1°F. Forecast models suggest a low more alike with November's typical minimum of 38.3°F than October's usual 49.3°F.
The temperature will be between the lowest temperature of 39.2°F and the highest temperature of 69.8°F. The warmest part of the day will be from 2 pm to 5 pm.
The maximum temperature will be a few degrees higher than October's average high of 67.1°F. Forecast models suggest a low more alike with November's typical minimum of 38.3°F than October's usual 49.3°F.
Updated: Oct 18, 2026 @ 16:34:59 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
On Monday, in Saint Johns, sunshine will prevail for most of the day.
Tomorrow, the highest temperature will be 71.6°F, while the lowest temperature will be 42.8°F.
The maximum temperature will be slightly warmer than the average highest temperature of 67.1°F in October. The lowest temperature will be also a few degrees lower than the average low of 49.3°F.
The maximum temperature will be slightly warmer than the average highest temperature of 67.1°F in October. The lowest temperature will be also a few degrees lower than the average low of 49.3°F.
On Monday, in Saint Johns, sunrise will be at 7:09 am and sunset at 6:14 pm (CDT).
In Saint Johns, the length of the day tomorrow will be 11h and 4min.
