10-day forecast for Grinnell, IL: 47° to 77°, with precipitation expected on 2 days. The table below breaks each day into morning, afternoon, evening and overnight.
77°
Best day: Sunday, October 25
64° · 1.67 in
Worst day: Sunday, November 1
Tap any day below to see morning, afternoon, evening and overnight.
Mon, 2677° / 49°0
Morning55°feels 54°
Afternoon75°feels 75°
Evening57°feels 56°
Overnight52°feels 51°
77 °
Grinnell, Monday, 26 October
Overcast. High 77°, low 49°.
Pressure30.36 inHg
Wind2.3 mph S
Humidity58%
Visibility6.2 mi
Dew point54°
Tue, 2776° / 48°0
Morning54°feels 53°
Afternoon71°feels 70°
Evening61°feels 60°
Overnight51°feels 50°
76 °
Grinnell, Tuesday, 27 October
Overcast. High 76°, low 48°.
Pressure30.27 inHg
Wind2.3 mph SE
Humidity58%
Visibility6.2 mi
Dew point53°
Wed, 2874° / 52°0
Morning54°feels 53°
Afternoon73°feels 73°
Evening60°feels 59°
Overnight55°feels 55°
74 °
Grinnell, Wednesday, 28 October
Partly cloudy. High 74°, low 52°.
Pressure30.24 inHg
Wind4.2 mph S
Humidity55%
Visibility6.2 mi
Dew point54°
Thu, 2975° / 52°0
Morning56°feels 55°
Afternoon74°feels 73°
Evening63°feels 62°
Overnight55°feels 54°
75 °
Grinnell, Thursday, 29 October
Clear. High 75°, low 52°.
Pressure30.21 inHg
Wind5.1 mph S
Humidity53%
Visibility6.2 mi
Dew point51°
Fri, 3075° / 55°0
Morning60°feels 60°
Afternoon73°feels 72°
Evening68°feels 67°
Overnight62°feels 61°
75 °
Grinnell, Friday, 30 October
Overcast. High 75°, low 55°.
Pressure30.15 inHg
Wind3.8 mph SE
Humidity43%
Visibility—
Dew point48°
Sat, 3175° / 60°0
Morning63°feels 62°
Afternoon70°feels 69°
Evening66°feels 65°
Overnight64°feels 63°
75 °
Grinnell, Saturday, 31 October
Overcast. High 75°, low 60°.
Pressure30.12 inHg
Wind7.2 mph S
Humidity52%
Visibility—
Dew point51°
Sun, 0164° / 57°1.67
Morning58°feels 58°
Afternoon60°feels 60°
Evening58°feels 58°
Overnight58°feels 58°
64 °
Grinnell, Sunday, 1 November
Heavy rain. High 64°, low 57°.
Pressure29.91 inHg
Wind14.5 mph E
Humidity93%
Visibility—
Dew point58°
Mon, 0260° / 57°0.3
Morning58°feels 58°
Afternoon60°feels 60°
Evening57°feels 57°
Overnight57°feels 57°
60 °
Grinnell, Monday, 2 November
Rain. High 60°, low 57°.
Pressure29.83 inHg
Wind11 mph NW
Humidity86%
Visibility—
Dew point56°
Tue, 0368° / 54°0
Morning58°feels 57°
Afternoon66°feels 65°
Evening59°feels 58°
Overnight56°feels 55°
68 °
Grinnell, Tuesday, 3 November
Mostly clear. High 68°, low 54°.
Pressure30.06 inHg
Wind7.1 mph NW
Humidity56%
Visibility—
Dew point49°
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 Grinnell, 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.