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As of 03:42 CDT

Weather in River Sioux, IA

43°Current weather

River Sioux, Tuesday, 20 October, 03:42

Clear. Feels like 41°. High 71°, low 43°.

Pressure30.27 inHg
Wind3.4 mph S
Humidity87%
Visibility6.2 mi
Dew point39°
Wed, 2174° / 48°0Clear
74 °Clear

River Sioux, Wednesday, 21 October

Clear. High 74°, low 48°.

Pressure30.18 inHg
Wind5.5 mph S
Humidity65%
Visibility6.2 mi
Dew point54°
Thu, 2274° / 53°0Clear
74 °Clear

River Sioux, Thursday, 22 October

Clear. High 74°, low 53°.

Pressure30.21 inHg
Wind7.5 mph S
Humidity61%
Visibility6.2 mi
Dew point55°
Fri, 2374° / 58°0Overcast
74 °Overcast

River Sioux, Friday, 23 October

Overcast. High 74°, low 58°.

Pressure30.06 inHg
Wind14.9 mph S
Humidity51%
Visibility6.2 mi
Dew point51°
Sat, 2475° / 58°0.02Light rain
75 °Light rain

River Sioux, Saturday, 24 October

Light rain. High 75°, low 58°.

Pressure30.12 inHg
Wind15.6 mph S
Humidity43%
Visibility—
Dew point48°
Sun, 2561° / 51°0.28Rain
61 °Rain

River Sioux, Sunday, 25 October

Rain. High 61°, low 51°.

Pressure30.39 inHg
Wind10.4 mph N
Humidity71%
Visibility—
Dew point50°
Mon, 2650° / 41°1.11Heavy rain
50 °Heavy rain

River Sioux, Monday, 26 October

Heavy rain. High 50°, low 41°.

Pressure30.33 inHg
Wind14.6 mph N
Humidity72%
Visibility—
Dew point38°
Tue, 2743° / 33°0Partly cloudy
43 °Partly cloudy

River Sioux, Tuesday, 27 October

Partly cloudy. High 43°, low 33°.

Pressure30.62 inHg
Wind18.1 mph N
Humidity41%
Visibility—
Dew point20°
Wed, 2848° / 29°0Clear
48 °Clear

River Sioux, Wednesday, 28 October

Clear. High 48°, low 29°.

Pressure30.53 inHg
Wind8.4 mph SW
Humidity33%
Visibility—
Dew point15°
Thu, 2952° / 36°0Overcast
52 °Overcast

River Sioux, Thursday, 29 October

Overcast. High 52°, low 36°.

Pressure30.06 inHg
Wind11 mph SW
Humidity51%
Visibility—
Dew point31°
Fri, 3052° / 39°0Overcast
52 °Overcast

River Sioux, Friday, 30 October

Overcast. High 52°, low 39°.

Pressure30.06 inHg
Wind6.3 mph NE
Humidity45%
Visibility—
Dew point27°
Sat, 3153° / 41°0Overcast
53 °Overcast

River Sioux, Saturday, 31 October

Overcast. High 53°, low 41°.

Pressure30.15 inHg
Wind6.5 mph E
Humidity57%
Visibility—
Dew point33°
Sun, 0151° / 41°0Overcast
51 °Overcast

River Sioux, Sunday, 1 November

Overcast. High 51°, low 41°.

Pressure30.21 inHg
Wind11.4 mph E
Humidity52%
Visibility—
Dew point33°
Mon, 0246° / 44°0.11Light rain
46 °Light rain

River Sioux, Monday, 2 November

Light rain. High 46°, low 44°.

Pressure30.27 inHg
Wind4.6 mph SE
Humidity82%
Visibility—
Dew point40°
Tue, 0360° / 42°0Clear
60 °Clear

River Sioux, Tuesday, 3 November

Clear. High 60°, low 42°.

Pressure30.15 inHg
Wind9.7 mph NW
Humidity52%
Visibility—
Dew point38°
Wed, 0462° / 43°0Partly cloudy
62 °Partly cloudy

River Sioux, Wednesday, 4 November

Partly cloudy. High 62°, low 43°.

Pressure29.97 inHg
Wind11.1 mph S
Humidity45%
Visibility—
Dew point36°

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for River Sioux, IA are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in River Sioux, IA since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.