Weather forecast for 10 daysSaint Johns, IL
Weather forecast for the weekend
Sunday Oct 18, 2026
- 66°F
- 37°F
Sunny
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 6mphSE 135°
- Humidity: 65%
- UV index: 5
- Sunrise: 7:08 am CDT
- Sunset: 6:15 pm CDT
- details ▼
Today, in Saint Johns, sunshine is forecasted under mostly clear skies.
Temperature changes will be remarkable, ranging from a high of a comfortable 66.2°F to a low of an icy 37.4°F.
The maximum temperature for today is anticipated to match the regular October high 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.
Temperature changes will be remarkable, ranging from a high of a comfortable 66.2°F to a low of an icy 37.4°F.
The maximum temperature for today is anticipated to match the regular October high 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.
10-day overview
Daily temperatures
Warmest day: Sunday 25.10. 81°C.
Coldest day: today 66°C.
Coldest day: today 66°C.
Chance of precipitation
Highest chance: 6%.
Long-term weather forecast
- Sunday
- Oct 18, 2026
- 66°F
- 37°F
Sunny
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 6mphSE 135°
- Humidity: 65%
- UV index: 5
- Sunrise: 7:08 am CDT
- Sunset: 6:15 pm CDT
- details ▼
- Monday
- Oct 19, 2026
- 72°F
- 41°F
Mostly Sunny
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 4mphSSE 162°
- Humidity: 55%
- UV index: 5
- Sunrise: 7:09 am CDT
- Sunset: 6:14 pm CDT
- details ▼
- Tuesday
- Oct 20, 2026
- 73°F
- 43°F
Partly Cloudy
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 4mphENE 64°
- Humidity: 50%
- UV index: 5
- Sunrise: 7:10 am CDT
- Sunset: 6:12 pm CDT
- details ▼
- Wednesday
- Oct 21, 2026
- 75°F
- 43°F
Sunny
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 4mphNE 39°
- Humidity: 50%
- UV index: 5
- Sunrise: 7:11 am CDT
- Sunset: 6:11 pm CDT
- details ▼
- Thursday
- Oct 22, 2026
- 75°F
- 45°F
Sunny
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 6mphNE 39°
- Humidity: 51%
- UV index: 4
- Sunrise: 7:12 am CDT
- Sunset: 6:10 pm CDT
- details ▼
- Friday
- Oct 23, 2026
- 77°F
- 43°F
Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 7mphE 96°
- Humidity: 50%
- UV index: 4
- Sunrise: 7:13 am CDT
- Sunset: 6:08 pm CDT
- details ▼
- Saturday
- Oct 24, 2026
- 79°F
- 46°F
Partly Cloudy
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 6mphSE 143°
- Humidity: 49%
- UV index: 4
- Sunrise: 7:14 am CDT
- Sunset: 6:07 pm CDT
- details ▼
- Sunday
- Oct 25, 2026
- 81°F
- 48°F
Partly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 6mphSSW 198°
- Humidity: 46%
- UV index: 4
- Sunrise: 7:15 am CDT
- Sunset: 6:06 pm CDT
- details ▼
- Monday
- Oct 26, 2026
- 79°F
- 48°F
Partly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 6mphSSW 194°
- Humidity: 48%
- UV index: 4
- Sunrise: 7:16 am CDT
- Sunset: 6:05 pm CDT
- details ▼
- Tuesday
- Oct 27, 2026
- 77°F
- 50°F
Partly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 6mphSSE 148°
- Humidity: 51%
- UV index: 4
- Sunrise: 7:17 am CDT
- Sunset: 6:03 pm CDT
- details ▼
It is expected that a combination of dry and sunny and overcast weather is expected.
Rain is not anticipated in Saint Johns in the upcoming days.
Noticeable swings in temperature are expected over the next several days. Forecast highs will fluctuate between 66.2°F and 80.6°F, while the lowest night temperatures will vary also significantly, as the lowest temperatures will be recorded between 37.4°F and 50°F.
Expect the warmest day on next Sunday, with temperatures peaking at 80.6°F; today is the coldest day, with a maximum temperature of 66.2°F.
Rain is not anticipated in Saint Johns in the upcoming days.
Noticeable swings in temperature are expected over the next several days. Forecast highs will fluctuate between 66.2°F and 80.6°F, while the lowest night temperatures will vary also significantly, as the lowest temperatures will be recorded between 37.4°F and 50°F.
Expect the warmest day on next Sunday, with temperatures peaking at 80.6°F; today is the coldest day, with a maximum temperature of 66.2°F.
Updated: Oct 18, 2026 @ 08:27:55 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 Sunday, in Saint Johns, skies will stay clear and sunny.
Today, the maximum temperature will be 66.2°F, while the minimum temperature will be 37.4°F.
Today, the highest temperature will be in line with the average maximum temperature in October. Today, the lowest temperature will be significantly lower than the average low of 49.3°F.
Today, the highest temperature will be in line with the average maximum temperature in October. Today, the lowest temperature will be significantly 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.
