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As of 00:24 CDT

Weather in River Sioux, IA

36°Current weather

River Sioux, Saturday, 17 October, 00:24

Clear. Feels like 36°. High 60°, low 36°.

Pressure30.59 inHg
Wind0 mph N
Humidity93%
Visibility6.2 mi
Dew point33°
Sun, 1865° / 44°0Clear
65 °Clear

River Sioux, Sunday, 18 October

Clear. High 65°, low 44°.

Pressure30.21 inHg
Wind14.3 mph S
Humidity54%
Visibility6.2 mi
Dew point41°
Mon, 1963° / 47°0Overcast
63 °Overcast

River Sioux, Monday, 19 October

Overcast. High 63°, low 47°.

Pressure30.24 inHg
Wind10.3 mph S
Humidity66%
Visibility6.2 mi
Dew point47°
Tue, 2069° / 50°0Clear
69 °Clear

River Sioux, Tuesday, 20 October

Clear. High 69°, low 50°.

Pressure30.21 inHg
Wind10.5 mph S
Humidity60%
Visibility6.2 mi
Dew point48°
Wed, 2171° / 54°0Clear
71 °Clear

River Sioux, Wednesday, 21 October

Clear. High 71°, low 54°.

Pressure30.12 inHg
Wind10.4 mph S
Humidity55%
Visibility—
Dew point50°
Thu, 2276° / 52°0Mostly clear
76 °Mostly clear

River Sioux, Thursday, 22 October

Mostly clear. High 76°, low 52°.

Pressure30.15 inHg
Wind11 mph SE
Humidity59%
Visibility—
Dew point54°
Fri, 2377° / 64°0Overcast
77 °Overcast

River Sioux, Friday, 23 October

Overcast. High 77°, low 64°.

Pressure29.94 inHg
Wind21.8 mph S
Humidity48%
Visibility—
Dew point53°
Sat, 2466° / 52°0Clear
66 °Clear

River Sioux, Saturday, 24 October

Clear. High 66°, low 52°.

Pressure30.24 inHg
Wind15.9 mph NW
Humidity44%
Visibility—
Dew point37°
Sun, 2558° / 48°0.01Light rain
58 °Light rain

River Sioux, Sunday, 25 October

Light rain. High 58°, low 48°.

Pressure30.42 inHg
Wind9 mph NE
Humidity33%
Visibility—
Dew point27°
Mon, 2662° / 48°0.32Light rain
62 °Light rain

River Sioux, Monday, 26 October

Light rain. High 62°, low 48°.

Pressure30.15 inHg
Wind11.3 mph S
Humidity82%
Visibility—
Dew point49°
Tue, 2762° / 50°0Overcast
62 °Overcast

River Sioux, Tuesday, 27 October

Overcast. High 62°, low 50°.

Pressure30.18 inHg
Wind10.9 mph N
Humidity48%
Visibility—
Dew point38°
Wed, 2862° / 45°0Overcast
62 °Overcast

River Sioux, Wednesday, 28 October

Overcast. High 62°, low 45°.

Pressure30.15 inHg
Wind8.3 mph SE
Humidity44%
Visibility—
Dew point36°
Thu, 2952° / 47°0.82Rain
52 °Rain

River Sioux, Thursday, 29 October

Rain. High 52°, low 47°.

Pressure29.59 inHg
Wind21.2 mph E
Humidity90%
Visibility—
Dew point45°
Fri, 3048° / 45°0.09Light rain
48 °Light rain

River Sioux, Friday, 30 October

Light rain. High 48°, low 45°.

Pressure29.94 inHg
Wind17.3 mph N
Humidity83%
Visibility—
Dew point41°
Sat, 3161° / 41°0Clear
61 °Clear

River Sioux, Saturday, 31 October

Clear. High 61°, low 41°.

Pressure30.24 inHg
Wind6.6 mph W
Humidity56%
Visibility—
Dew point40°
Sun, 0164° / 46°0Clear
64 °Clear

River Sioux, Sunday, 1 November

Clear. High 64°, low 46°.

Pressure30.06 inHg
Wind10.3 mph S
Humidity54%
Visibility—
Dew point45°

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.