10-day forecast for Alton, IA: 57° to 103°, with precipitation expected on 3 days. The table below breaks each day into morning, afternoon, evening and overnight.
103°
Best day: Monday, August 10
68° · 0.06 in
Worst day: Saturday, August 15
Tap any day below to see morning, afternoon, evening and overnight.
Mon, 10103° / 68°0
Morning68°feels 69°
Afternoon98°feels 99°
Evening94°feels 92°
Overnight70°feels 71°
103 °
Alton, Monday, 10 August
Overcast. High 103°, low 68°.
Pressure29.80 inHg
Wind13.4 mph E
Humidity47%
Visibility6.2 mi
Dew point68°
Tue, 1198° / 65°0.02
Morning68°feels 69°
Afternoon96°feels 96°
Evening88°feels 88°
Overnight70°feels 70°
98 °
Alton, Tuesday, 11 August
Light rain. High 98°, low 65°.
Pressure29.77 inHg
Wind11.3 mph NE
Humidity36%
Visibility6.2 mi
Dew point61°
Wed, 1296° / 67°0.04
Morning68°feels 69°
Afternoon95°feels 91°
Evening85°feels 83°
Overnight67°feels 68°
96 °
Alton, Wednesday, 12 August
Light rain. High 96°, low 67°.
Pressure29.88 inHg
Wind11.4 mph E
Humidity27%
Visibility6.2 mi
Dew point52°
Thu, 1376° / 62°0.04
Morning63°feels 63°
Afternoon67°feels 67°
Evening74°feels 73°
Overnight63°feels 62°
76 °
Alton, Thursday, 13 August
Light rain. High 76°, low 62°.
Pressure30.00 inHg
Wind10.9 mph NE
Humidity83%
Visibility—
Dew point60°
Fri, 1488° / 58°0.01
Morning66°feels 65°
Afternoon83°feels 81°
Evening74°feels 73°
Overnight65°feels 65°
88 °
Alton, Friday, 14 August
Light rain. High 88°, low 58°.
Pressure30.06 inHg
Wind14.8 mph SW
Humidity29%
Visibility—
Dew point46°
Sat, 1568° / 61°0.06
Morning64°feels 65°
Afternoon67°feels 67°
Evening63°feels 63°
Overnight62°feels 62°
68 °
Alton, Saturday, 15 August
Light rain. High 68°, low 61°.
Pressure30.18 inHg
Wind12.4 mph SE
Humidity73%
Visibility—
Dew point58°
Sun, 1688° / 57°0
Morning64°feels 64°
Afternoon80°feels 80°
Evening80°feels 81°
Overnight66°feels 66°
88 °
Alton, Sunday, 16 August
Overcast. High 88°, low 57°.
Pressure30.06 inHg
Wind6.7 mph SW
Humidity53%
Visibility—
Dew point58°
Mon, 1793° / 64°0
Morning71°feels 71°
Afternoon90°feels 89°
Evening88°feels 88°
Overnight73°feels 73°
93 °
Alton, Monday, 17 August
Partly cloudy. High 93°, low 64°.
Pressure29.97 inHg
Wind12.7 mph W
Humidity35%
Visibility—
Dew point55°
Tue, 18101° / 66°0.02
Morning74°feels 74°
Afternoon96°feels 94°
Evening95°feels 92°
Overnight76°feels 76°
101 °
Alton, Tuesday, 18 August
Light rain. High 101°, low 66°.
Pressure29.91 inHg
Wind10.4 mph W
Humidity28%
Visibility—
Dew point53°
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 Alton, IA 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.