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As of 17:13 CDT

Weather in River Sioux, IA

70°Current weather

River Sioux, Sunday, 18 October, 17:13

Clear. Feels like 68°. High 70°, low 43°.

Pressure30.12 inHg
Wind19.6 mph S
Humidity28%
Visibility6.2 mi
Dew point37°
Mon, 1967° / 45°0Partly cloudy
67 °Partly cloudy

River Sioux, Monday, 19 October

Partly cloudy. High 67°, low 45°.

Pressure30.27 inHg
Wind7.1 mph S
Humidity64%
Visibility6.2 mi
Dew point47°
Tue, 2068° / 47°0Clear
68 °Clear

River Sioux, Tuesday, 20 October

Clear. High 68°, low 47°.

Pressure30.27 inHg
Wind9 mph S
Humidity59%
Visibility6.2 mi
Dew point48°
Wed, 2172° / 51°0Clear
72 °Clear

River Sioux, Wednesday, 21 October

Clear. High 72°, low 51°.

Pressure30.21 inHg
Wind6.4 mph S
Humidity64%
Visibility6.2 mi
Dew point53°
Thu, 2272° / 52°0Mostly clear
72 °Mostly clear

River Sioux, Thursday, 22 October

Mostly clear. High 72°, low 52°.

Pressure30.21 inHg
Wind9.7 mph S
Humidity58%
Visibility6.2 mi
Dew point51°
Fri, 2373° / 59°0.02Light rain
73 °Light rain

River Sioux, Friday, 23 October

Light rain. High 73°, low 59°.

Pressure30.00 inHg
Wind19 mph S
Humidity51%
Visibility—
Dew point50°
Sat, 2468° / 58°0.04Light rain
68 °Light rain

River Sioux, Saturday, 24 October

Light rain. High 68°, low 58°.

Pressure30.12 inHg
Wind15.1 mph S
Humidity73%
Visibility—
Dew point58°
Sun, 2559° / 48°0Overcast
59 °Overcast

River Sioux, Sunday, 25 October

Overcast. High 59°, low 48°.

Pressure30.42 inHg
Wind6.8 mph E
Humidity43%
Visibility—
Dew point33°
Mon, 2671° / 54°0.02Light rain
71 °Light rain

River Sioux, Monday, 26 October

Light rain. High 71°, low 54°.

Pressure30.18 inHg
Wind11.9 mph S
Humidity55%
Visibility—
Dew point48°
Tue, 2759° / 55°0.18Light rain
59 °Light rain

River Sioux, Tuesday, 27 October

Light rain. High 59°, low 55°.

Pressure30.18 inHg
Wind11.4 mph SW
Humidity80%
Visibility—
Dew point52°
Wed, 2864° / 57°0.07Light rain
64 °Light rain

River Sioux, Wednesday, 28 October

Light rain. High 64°, low 57°.

Pressure30.06 inHg
Wind12.7 mph S
Humidity81%
Visibility—
Dew point57°
Thu, 2963° / 57°0.21Light rain
63 °Light rain

River Sioux, Thursday, 29 October

Light rain. High 63°, low 57°.

Pressure29.83 inHg
Wind13.1 mph S
Humidity86%
Visibility—
Dew point55°
Fri, 3060° / 47°0.01Light rain
60 °Light rain

River Sioux, Friday, 30 October

Light rain. High 60°, low 47°.

Pressure30.06 inHg
Wind13.2 mph NW
Humidity49%
Visibility—
Dew point35°
Sat, 3156° / 45°0.14Rain
56 °Rain

River Sioux, Saturday, 31 October

Rain. High 56°, low 45°.

Pressure30.09 inHg
Wind6.6 mph E
Humidity55%
Visibility—
Dew point38°
Sun, 0153° / 42°0.87Rain
53 °Rain

River Sioux, Sunday, 1 November

Rain. High 53°, low 42°.

Pressure29.88 inHg
Wind22.9 mph N
Humidity94%
Visibility—
Dew point51°
Mon, 0243° / 35°0Light rain
43 °Light rain

River Sioux, Monday, 2 November

Light rain. High 43°, low 35°.

Pressure30.42 inHg
Wind20.4 mph N
Humidity52%
Visibility—
Dew point24°

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.