10-day forecast for River Sioux, IA: 62° to 107°, with precipitation expected on 3 days. The table below breaks each day into morning, afternoon, evening and overnight.
107°
Best day: Tuesday, August 11
76° · 0.48 in
Worst day: Thursday, August 13
Tap any day below to see morning, afternoon, evening and overnight.
Mon, 1091° / 73°0
Morning74°feels 74°
Afternoon75°feels 74°
Evening91°feels 91°
Overnight81°feels 86°
91 °
River Sioux, Monday, 10 August
Overcast. High 91°, low 73°.
Pressure29.85 inHg
Wind15.1 mph SE
Humidity48%
Visibility6.2 mi
Dew point65°
Tue, 11107° / 70°0
Morning77°feels 78°
Afternoon104°feels 103°
Evening92°feels 94°
Overnight73°feels 73°
107 °
River Sioux, Tuesday, 11 August
Partly cloudy. High 107°, low 70°.
Pressure29.71 inHg
Wind2 mph W
Humidity24%
Visibility6.2 mi
Dew point57°
Wed, 1296° / 70°0.07
Morning74°feels 75°
Afternoon92°feels 94°
Evening87°feels 90°
Overnight72°feels 73°
96 °
River Sioux, Wednesday, 12 August
Light rain. High 96°, low 70°.
Pressure29.85 inHg
Wind9.4 mph E
Humidity80%
Visibility6.2 mi
Dew point71°
Thu, 1376° / 62°0.48
Morning68°feels 69°
Afternoon65°feels 65°
Evening64°feels 64°
Overnight71°feels 72°
76 °
River Sioux, Thursday, 13 August
Rain. High 76°, low 62°.
Pressure30.00 inHg
Wind18.2 mph E
Humidity94%
Visibility—
Dew point64°
Fri, 1466° / 62°0.13
Morning63°feels 63°
Afternoon64°feels 65°
Evening65°feels 66°
Overnight65°feels 65°
66 °
River Sioux, Friday, 14 August
Light rain. High 66°, low 62°.
Pressure30.09 inHg
Wind12.1 mph E
Humidity95%
Visibility—
Dew point62°
Sat, 1573° / 63°0
Morning65°feels 66°
Afternoon72°feels 72°
Evening71°feels 72°
Overnight65°feels 65°
73 °
River Sioux, Saturday, 15 August
Overcast. High 73°, low 63°.
Pressure30.12 inHg
Wind9.1 mph E
Humidity77%
Visibility—
Dew point63°
Sun, 1689° / 64°0
Morning70°feels 71°
Afternoon85°feels 87°
Evening84°feels 85°
Overnight71°feels 72°
89 °
River Sioux, Sunday, 16 August
Overcast. High 89°, low 64°.
Pressure30.12 inHg
Wind8.7 mph N
Humidity51%
Visibility—
Dew point62°
Mon, 1790° / 68°0
Morning74°feels 75°
Afternoon88°feels 90°
Evening83°feels 86°
Overnight74°feels 75°
90 °
River Sioux, Monday, 17 August
Light rain. High 90°, low 68°.
Pressure30.03 inHg
Wind12.6 mph S
Humidity44%
Visibility—
Dew point62°
Tue, 18100° / 68°0
Morning75°feels 77°
Afternoon95°feels 98°
Evening96°feels 96°
Overnight77°feels 78°
100 °
River Sioux, Tuesday, 18 August
Overcast. High 100°, low 68°.
Pressure29.80 inHg
Wind14.6 mph S
Humidity40%
Visibility—
Dew point63°
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 River Sioux, 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.