10-day forecast for St. Johns, IL: 35° to 66°, with precipitation expected on 0 days. The table below breaks each day into morning, afternoon, evening and overnight.
66°
Best day: Monday, November 9
54°
Worst day: Saturday, November 7
Tap any day below to see morning, afternoon, evening and overnight.
Fri, 0656° / 43°0
Morning53°feels 52°
Afternoon56°feels 54°
Evening50°feels 48°
Overnight49°feels 47°
56 °
St. Johns, Friday, 6 November
Overcast. High 56°, low 43°.
Pressure30.12 inHg
Wind10.9 mph N
Humidity68%
Visibility6.2 mi
Dew point45°
Sat, 0754° / 37°0
Morning41°feels 38°
Afternoon54°feels 51°
Evening42°feels 42°
Overnight39°feels 36°
54 °
St. Johns, Saturday, 7 November
Partly cloudy. High 54°, low 37°.
Pressure30.27 inHg
Wind3.1 mph NW
Humidity52%
Visibility6.2 mi
Dew point36°
Sun, 0861° / 37°0
Morning44°feels 41°
Afternoon60°feels 58°
Evening49°feels 47°
Overnight38°feels 35°
61 °
St. Johns, Sunday, 8 November
Clear. High 61°, low 37°.
Pressure30.21 inHg
Wind6.6 mph W
Humidity55%
Visibility6.2 mi
Dew point42°
Mon, 0966° / 43°0
Morning49°feels 48°
Afternoon63°feels 62°
Evening55°feels 54°
Overnight51°feels 50°
66 °
St. Johns, Monday, 9 November
Clear. High 66°, low 43°.
Pressure30.21 inHg
Wind5.7 mph S
Humidity62%
Visibility—
Dew point48°
Tue, 1065° / 44°0
Morning49°feels 47°
Afternoon61°feels 59°
Evening53°feels 50°
Overnight49°feels 46°
65 °
St. Johns, Tuesday, 10 November
Clear. High 65°, low 44°.
Pressure30.09 inHg
Wind6.7 mph SW
Humidity49%
Visibility—
Dew point41°
Wed, 1162° / 45°0
Morning50°feels 46°
Afternoon60°feels 57°
Evening51°feels 48°
Overnight47°feels 44°
62 °
St. Johns, Wednesday, 11 November
Partly cloudy. High 62°, low 45°.
Pressure30.15 inHg
Wind8.5 mph N
Humidity35%
Visibility—
Dew point32°
Thu, 1254° / 38°0
Morning42°feels 38°
Afternoon52°feels 48°
Evening44°feels 40°
Overnight40°feels 35°
54 °
St. Johns, Thursday, 12 November
Clear. High 54°, low 38°.
Pressure30.18 inHg
Wind12.7 mph N
Humidity40%
Visibility—
Dew point27°
Fri, 1358° / 35°0
Morning40°feels 37°
Afternoon54°feels 51°
Evening48°feels 46°
Overnight42°feels 38°
58 °
St. Johns, Friday, 13 November
Clear. High 58°, low 35°.
Pressure30.12 inHg
Wind7.1 mph SW
Humidity36%
Visibility—
Dew point26°
Sat, 1465° / 40°0
Morning47°feels 43°
Afternoon62°feels 59°
Evening54°feels 52°
Overnight49°feels 46°
65 °
St. Johns, Saturday, 14 November
Clear. High 65°, low 40°.
Pressure30.03 inHg
Wind11 mph SW
Humidity33%
Visibility—
Dew point31°
About this forecast
How reliable is a 10-day forecast?
The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.
What does the time-of-day table show?
Temperature in St. Johns, IL around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.
How is the best day chosen?
We weigh the daytime high against precipitation: a warm, dry day scores highest.