10-day forecast for Forreston, IL: 57° to 86°, with precipitation expected on 4 days. The table below breaks each day into morning, afternoon, evening and overnight.
79°
Best day: Monday, August 17
85° · 0.49 in
Worst day: Monday, August 10
Tap any day below to see morning, afternoon, evening and overnight.
Sun, 0986° / 62°0.09
Morning69°feels 70°
Afternoon83°feels 91°
Evening81°feels 87°
Overnight65°feels 64°
86 °
Forreston, Sunday, 9 August
Light rain. High 86°, low 62°.
Pressure29.91 inHg
Wind5 mph S
Humidity86%
Visibility6.2 mi
Dew point74°
Mon, 1085° / 70°0.49
Morning71°feels 73°
Afternoon83°feels 90°
Evening78°feels 79°
Overnight73°feels 75°
85 °
Forreston, Monday, 10 August
Heavy rain. High 85°, low 70°.
Pressure29.88 inHg
Wind5.1 mph SE
Humidity78%
Visibility6.2 mi
Dew point74°
Tue, 1185° / 70°0.09
Morning71°feels 73°
Afternoon84°feels 90°
Evening77°feels 78°
Overnight73°feels 74°
85 °
Forreston, Tuesday, 11 August
Rain. High 85°, low 70°.
Pressure29.77 inHg
Wind4.8 mph W
Humidity84%
Visibility6.2 mi
Dew point73°
Wed, 1280° / 67°0.01
Morning71°feels 72°
Afternoon79°feels 79°
Evening70°feels 70°
Overnight69°feels 70°
80 °
Forreston, Wednesday, 12 August
Light rain. High 80°, low 67°.
Pressure29.88 inHg
Wind6 mph NW
Humidity90%
Visibility6.2 mi
Dew point71°
Thu, 1371° / 58°0
Morning62°feels 62°
Afternoon71°feels 71°
Evening67°feels 67°
Overnight61°feels 61°
71 °
Forreston, Thursday, 13 August
Overcast. High 71°, low 58°.
Pressure30.03 inHg
Wind8.7 mph E
Humidity75%
Visibility—
Dew point61°
Fri, 1476° / 57°0
Morning62°feels 61°
Afternoon74°feels 74°
Evening71°feels 71°
Overnight64°feels 64°
76 °
Forreston, Friday, 14 August
Partly cloudy. High 76°, low 57°.
Pressure30.12 inHg
Wind5.1 mph SE
Humidity59%
Visibility—
Dew point57°
Sat, 1567° / 59°0.04
Morning63°feels 62°
Afternoon66°feels 66°
Evening60°feels 60°
Overnight60°feels 59°
67 °
Forreston, Saturday, 15 August
Light rain. High 67°, low 59°.
Pressure30.30 inHg
Wind9.3 mph S
Humidity66%
Visibility—
Dew point55°
Sun, 1671° / 58°0
Morning62°feels 62°
Afternoon68°feels 68°
Evening69°feels 69°
Overnight64°feels 64°
71 °
Forreston, Sunday, 16 August
Overcast. High 71°, low 58°.
Pressure30.15 inHg
Wind6.1 mph E
Humidity71%
Visibility—
Dew point57°
Mon, 1779° / 62°0
Morning66°feels 67°
Afternoon76°feels 76°
Evening74°feels 76°
Overnight66°feels 67°
79 °
Forreston, Monday, 17 August
Overcast. High 79°, low 62°.
Pressure30.06 inHg
Wind6.3 mph S
Humidity71%
Visibility—
Dew point64°
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 Forreston, 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.