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As of 10:02 CDT

Weather in River Sioux, IA

52°Current weather

River Sioux, Monday, 19 October, 10:02

Overcast. Feels like 50°. High 67°, low 44°.

Pressure30.30 inHg
Wind8.1 mph S
Humidity76%
Visibility6.2 mi
Dew point45°
Tue, 2072° / 45°0Clear
72 °Clear

River Sioux, Tuesday, 20 October

Clear. High 72°, low 45°.

Pressure30.27 inHg
Wind8 mph S
Humidity58%
Visibility6.2 mi
Dew point48°
Wed, 2171° / 49°0Clear
71 °Clear

River Sioux, Wednesday, 21 October

Clear. High 71°, low 49°.

Pressure30.21 inHg
Wind5.2 mph S
Humidity63%
Visibility6.2 mi
Dew point52°
Thu, 2273° / 53°0Mostly clear
73 °Mostly clear

River Sioux, Thursday, 22 October

Mostly clear. High 73°, low 53°.

Pressure30.24 inHg
Wind7.7 mph S
Humidity59%
Visibility6.2 mi
Dew point54°
Fri, 2373° / 57°0Overcast
73 °Overcast

River Sioux, Friday, 23 October

Overcast. High 73°, low 57°.

Pressure30.06 inHg
Wind18 mph SE
Humidity50%
Visibility—
Dew point49°
Sat, 2475° / 61°0.03Light rain
75 °Light rain

River Sioux, Saturday, 24 October

Light rain. High 75°, low 61°.

Pressure30.12 inHg
Wind15.6 mph S
Humidity47%
Visibility—
Dew point49°
Sun, 2563° / 52°0.02Light rain
63 °Light rain

River Sioux, Sunday, 25 October

Light rain. High 63°, low 52°.

Pressure30.39 inHg
Wind7.8 mph N
Humidity24%
Visibility—
Dew point23°
Mon, 2662° / 50°0.15Light rain
62 °Light rain

River Sioux, Monday, 26 October

Light rain. High 62°, low 50°.

Pressure30.09 inHg
Wind11.3 mph S
Humidity87%
Visibility—
Dew point55°
Tue, 2757° / 38°0.68Rain
57 °Rain

River Sioux, Tuesday, 27 October

Rain. High 57°, low 38°.

Pressure30.30 inHg
Wind19.6 mph N
Humidity43%
Visibility—
Dew point24°
Wed, 2847° / 29°0Clear
47 °Clear

River Sioux, Wednesday, 28 October

Clear. High 47°, low 29°.

Pressure30.47 inHg
Wind10 mph NW
Humidity30%
Visibility—
Dew point12°
Thu, 2956° / 35°0Overcast
56 °Overcast

River Sioux, Thursday, 29 October

Overcast. High 56°, low 35°.

Pressure30.12 inHg
Wind14.1 mph S
Humidity43%
Visibility—
Dew point28°
Fri, 3057° / 41°0Overcast
57 °Overcast

River Sioux, Friday, 30 October

Overcast. High 57°, low 41°.

Pressure29.88 inHg
Wind8.4 mph N
Humidity54%
Visibility—
Dew point37°
Sat, 3154° / 41°0Overcast
54 °Overcast

River Sioux, Saturday, 31 October

Overcast. High 54°, low 41°.

Pressure29.97 inHg
Wind9.1 mph E
Humidity63%
Visibility—
Dew point38°
Sun, 0148° / 38°0Overcast
48 °Overcast

River Sioux, Sunday, 1 November

Overcast. High 48°, low 38°.

Pressure30.15 inHg
Wind17 mph NW
Humidity61%
Visibility—
Dew point34°
Mon, 0248° / 31°0.01Light rain
48 °Light rain

River Sioux, Monday, 2 November

Light rain. High 48°, low 31°.

Pressure30.27 inHg
Wind7.2 mph SE
Humidity53%
Visibility—
Dew point27°
Tue, 0349° / 40°0.01Light rain
49 °Light rain

River Sioux, Tuesday, 3 November

Light rain. High 49°, low 40°.

Pressure30.06 inHg
Wind7.6 mph W
Humidity62%
Visibility—
Dew point35°

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.