Find the Best Places in the United States

Compare Cost of Living, Education, Income, Population, and More.

Current Weather Conditions for Saint Johns, IL

Sunny. High near 99, with temperatures falling to around 97 in the afternoon. Heat index values as high as 115. West southwest wind around 5 mph.
91°F

Conditions

Wind: 3 mph WSW
Humidity: 60%
Probability of Precipitation: 0%

Hourly Forcast (next 12 hours)

5 PM 6 PM 7 PM 8 PM 9 PM 10 PM 11 PM 12 AM 1 AM 2 AM 3 AM 4 AM 5 AM
91° 94° 97° 99° 97° 97° 96° 93° 89° 86° 85° 84° 84°

Upcoming Week

Day Forecast High Low
This Afternoon
Sunny
Sunny. High near 99, with temperatures falling to around 97 in the afternoon. Heat index values as high as 115. West southwest wind around 5 mph.
99°F 72°F
Tonight
Chance Showers And Thunderstorms then Partly Cloudy
A chance of showers and thunderstorms between 9pm and midnight. Partly cloudy, with a low around 79. Heat index values as high as 111. West southwest wind around 6 mph. Chance of precipitation is 30%.
99°F 72°F
Tuesday
Mostly Sunny
Mostly sunny. High near 94, with temperatures falling to around 91 in the afternoon. Heat index values as high as 105. Northwest wind 5 to 10 mph.
99°F 72°F
Tuesday Night
Slight Chance Rain Showers
A slight chance of rain showers after 7pm. Partly cloudy, with a low around 68. North northeast wind 3 to 8 mph. Chance of precipitation is 20%.
99°F 72°F
Wednesday
Slight Chance Rain Showers then Sunny
A slight chance of rain showers before 7am. Sunny, with a high near 88. North northeast wind 2 to 8 mph. Chance of precipitation is 20%.
99°F 72°F
Wednesday Night
Mostly Clear
Mostly clear, with a low around 66. Northeast wind 1 to 7 mph.
99°F 72°F
Thursday
Sunny
Sunny, with a high near 90. East northeast wind around 3 mph.
99°F 72°F
Thursday Night
Partly Cloudy
Partly cloudy, with a low around 68. East southeast wind around 2 mph.
99°F 72°F
Friday
Chance Rain Showers then Slight Chance Showers And Thunderstorms
A chance of rain showers between 7am and 1pm, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 87. South southeast wind 0 to 5 mph.
99°F 72°F
Friday Night
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 69. East wind 2 to 6 mph.
99°F 72°F
Saturday
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 84. Northeast wind 3 to 9 mph.
99°F 72°F
Saturday Night
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 67. North wind 2 to 9 mph.
99°F 72°F
Sunday
Mostly Sunny
Mostly sunny, with a high near 86. North wind 3 to 8 mph.
99°F 72°F
Sunday Night
Mostly Clear
Mostly clear, with a low around 66. North northeast wind 1 to 7 mph.
99°F 72°F
Data provided by weather.gov