10-day forecast for Flagg, IL: 54° to 87°, with precipitation expected on 3 days. The table below breaks each day into morning, afternoon, evening and overnight.
84°
Best day: Monday, August 10
85° · 0.52 in
Worst day: Sunday, August 9
Tap any day below to see morning, afternoon, evening and overnight.
Sun, 0985° / 63°0.52
Morning70°feels 71°
Afternoon77°feels 79°
Evening81°feels 88°
Overnight66°feels 66°
85 °
Flagg, Sunday, 9 August
Rain. High 85°, low 63°.
Pressure29.91 inHg
Wind9.4 mph E
Humidity97%
Visibility6.2 mi
Dew point69°
Mon, 1084° / 71°0.02
Morning71°feels 73°
Afternoon84°feels 91°
Evening77°feels 79°
Overnight74°feels 76°
84 °
Flagg, Monday, 10 August
Light rain. High 84°, low 71°.
Pressure29.88 inHg
Wind10.3 mph S
Humidity80%
Visibility6.2 mi
Dew point74°
Tue, 1187° / 70°0.14
Morning76°feels 77°
Afternoon87°feels 95°
Evening75°feels 76°
Overnight73°feels 74°
87 °
Flagg, Tuesday, 11 August
Light rain. High 87°, low 70°.
Pressure29.80 inHg
Wind10.6 mph W
Humidity74%
Visibility6.2 mi
Dew point72°
Wed, 1280° / 65°0.02
Morning67°feels 68°
Afternoon79°feels 79°
Evening76°feels 78°
Overnight68°feels 69°
80 °
Flagg, Wednesday, 12 August
Light rain. High 80°, low 65°.
Pressure29.88 inHg
Wind1.8 mph E
Humidity88%
Visibility6.2 mi
Dew point68°
Thu, 1372° / 59°0.02
Morning65°feels 65°
Afternoon71°feels 72°
Evening65°feels 66°
Overnight60°feels 60°
72 °
Flagg, Thursday, 13 August
Light rain. High 72°, low 59°.
Pressure29.94 inHg
Wind11.6 mph NE
Humidity73%
Visibility—
Dew point62°
Fri, 1473° / 54°0
Morning60°feels 60°
Afternoon71°feels 71°
Evening67°feels 67°
Overnight59°feels 58°
73 °
Flagg, Friday, 14 August
Clear. High 73°, low 54°.
Pressure30.21 inHg
Wind7 mph E
Humidity62%
Visibility—
Dew point56°
Sat, 1573° / 54°0
Morning61°feels 60°
Afternoon71°feels 71°
Evening67°feels 67°
Overnight59°feels 59°
73 °
Flagg, Saturday, 15 August
Overcast. High 73°, low 54°.
Pressure30.30 inHg
Wind7.5 mph S
Humidity62%
Visibility—
Dew point56°
Sun, 1676° / 57°0
Morning62°feels 62°
Afternoon74°feels 74°
Evening72°feels 73°
Overnight68°feels 68°
76 °
Flagg, Sunday, 16 August
Overcast. High 76°, low 57°.
Pressure30.18 inHg
Wind10.8 mph S
Humidity69%
Visibility—
Dew point61°
Mon, 1780° / 65°0.01
Morning70°feels 71°
Afternoon76°feels 77°
Evening75°feels 77°
Overnight73°feels 74°
80 °
Flagg, Monday, 17 August
Light rain. High 80°, low 65°.
Pressure29.97 inHg
Wind7.4 mph S
Humidity85%
Visibility—
Dew point70°
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 Flagg, 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.