10-day forecast for Alta, IL: 37° to 84°, with precipitation expected on 7 days. The table below breaks each day into morning, afternoon, evening and overnight.
84°
Best day: Tuesday, October 13
71° · 1.46 in
Worst day: Thursday, October 15
Tap any day below to see morning, afternoon, evening and overnight.
Wed, 1477° / 58°0.14
Morning62°feels 62°
Afternoon77°feels 77°
Evening66°feels 66°
Overnight65°feels 65°
77 °
Alta, Wednesday, 14 October
Rain. High 77°, low 58°.
Pressure30.09 inHg
Wind7.1 mph NE
Humidity69%
Visibility6.2 mi
Dew point58°
Thu, 1571° / 58°1.46
Morning59°feels 60°
Afternoon68°feels 69°
Evening70°feels 71°
Overnight59°feels 59°
71 °
Alta, Thursday, 15 October
Heavy rain. High 71°, low 58°.
Pressure29.94 inHg
Wind5 mph E
Humidity97%
Visibility1.7 mi
Dew point64°
Fri, 1659° / 46°0.03
Morning48°feels 42°
Afternoon53°feels 51°
Evening49°feels 43°
Overnight57°feels 56°
59 °
Alta, Friday, 16 October
Light rain. High 59°, low 46°.
Pressure30.18 inHg
Wind22.6 mph NW
Humidity59%
Visibility6.2 mi
Dew point40°
Sat, 1756° / 37°0
Morning40°feels 40°
Afternoon55°feels 52°
Evening47°feels 45°
Overnight42°feels 37°
56 °
Alta, Saturday, 17 October
Clear. High 56°, low 37°.
Pressure30.53 inHg
Wind1.9 mph S
Humidity47%
Visibility6.2 mi
Dew point32°
Sun, 1863° / 44°0
Morning49°feels 45°
Afternoon60°feels 59°
Evening55°feels 53°
Overnight52°feels 49°
63 °
Alta, Sunday, 18 October
Clear. High 63°, low 44°.
Pressure30.30 inHg
Wind12.8 mph SW
Humidity49%
Visibility—
Dew point40°
Mon, 1955° / 50°0.39
Morning51°feels 49°
Afternoon53°feels 53°
Evening54°feels 54°
Overnight54°feels 53°
55 °
Alta, Monday, 19 October
Rain. High 55°, low 50°.
Pressure30.21 inHg
Wind9.6 mph S
Humidity94%
Visibility—
Dew point51°
Tue, 2063° / 54°0.09
Morning56°feels 55°
Afternoon59°feels 58°
Evening60°feels 60°
Overnight58°feels 58°
63 °
Alta, Tuesday, 20 October
Light rain. High 63°, low 54°.
Pressure30.27 inHg
Wind7.3 mph SE
Humidity87%
Visibility—
Dew point54°
Wed, 2164° / 58°0.2
Morning60°feels 60°
Afternoon64°feels 65°
Evening64°feels 65°
Overnight63°feels 64°
64 °
Alta, Wednesday, 21 October
Light rain. High 64°, low 58°.
Pressure30.18 inHg
Wind10.1 mph S
Humidity90%
Visibility—
Dew point60°
Thu, 2270° / 63°0.54
Morning65°feels 65°
Afternoon68°feels 68°
Evening68°feels 69°
Overnight69°feels 69°
70 °
Alta, Thursday, 22 October
Rain. High 70°, low 63°.
Pressure30.00 inHg
Wind15.9 mph S
Humidity78%
Visibility—
Dew point60°
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 Alta, 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.