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As of 04:02 CDT

Weather in River Sioux, IA

52°Current weather

River Sioux, Thursday, 15 October, 04:02

Rain. Feels like 51°. High 56°, low 48°.

Pressure30.06 inHg
Wind6.9 mph N
Humidity87%
Visibility2.1 mi
Dew point49°
Fri, 1652° / 41°0Partly cloudy
52 °Partly cloudy

River Sioux, Friday, 16 October

Partly cloudy. High 52°, low 41°.

Pressure30.56 inHg
Wind20.8 mph N
Humidity51%
Visibility6.2 mi
Dew point32°
Sat, 1759° / 36°0Clear
59 °Clear

River Sioux, Saturday, 17 October

Clear. High 59°, low 36°.

Pressure30.50 inHg
Wind12.8 mph S
Humidity43%
Visibility6.2 mi
Dew point31°
Sun, 1864° / 43°0Clear
64 °Clear

River Sioux, Sunday, 18 October

Clear. High 64°, low 43°.

Pressure30.24 inHg
Wind13.7 mph S
Humidity54%
Visibility6.2 mi
Dew point40°
Mon, 1962° / 48°0Overcast
62 °Overcast

River Sioux, Monday, 19 October

Overcast. High 62°, low 48°.

Pressure30.21 inHg
Wind11.1 mph S
Humidity63%
Visibility—
Dew point45°
Tue, 2069° / 49°0Clear
69 °Clear

River Sioux, Tuesday, 20 October

Clear. High 69°, low 49°.

Pressure30.18 inHg
Wind11.2 mph SE
Humidity53%
Visibility—
Dew point46°
Wed, 2166° / 53°0.04Light rain
66 °Light rain

River Sioux, Wednesday, 21 October

Light rain. High 66°, low 53°.

Pressure30.18 inHg
Wind14.7 mph S
Humidity59%
Visibility—
Dew point48°
Thu, 2267° / 60°0.3Rain
67 °Rain

River Sioux, Thursday, 22 October

Rain. High 67°, low 60°.

Pressure30.00 inHg
Wind16.5 mph S
Humidity68%
Visibility—
Dew point55°
Fri, 2363° / 59°0.35Rain
63 °Rain

River Sioux, Friday, 23 October

Rain. High 63°, low 59°.

Pressure29.71 inHg
Wind28.7 mph S
Humidity62%
Visibility—
Dew point49°
Sat, 2454° / 47°0Overcast
54 °Overcast

River Sioux, Saturday, 24 October

Overcast. High 54°, low 47°.

Pressure30.12 inHg
Wind22.6 mph S
Humidity57%
Visibility—
Dew point38°
Sun, 2552° / 40°0Clear
52 °Clear

River Sioux, Sunday, 25 October

Clear. High 52°, low 40°.

Pressure30.30 inHg
Wind15.7 mph NW
Humidity38%
Visibility—
Dew point25°
Mon, 2648° / 38°0.04Light rain
48 °Light rain

River Sioux, Monday, 26 October

Light rain. High 48°, low 38°.

Pressure30.39 inHg
Wind6.2 mph N
Humidity41%
Visibility—
Dew point24°
Tue, 2751° / 35°0Clear
51 °Clear

River Sioux, Tuesday, 27 October

Clear. High 51°, low 35°.

Pressure30.30 inHg
Wind9.1 mph S
Humidity50%
Visibility—
Dew point30°
Wed, 2857° / 42°0Overcast
57 °Overcast

River Sioux, Wednesday, 28 October

Overcast. High 57°, low 42°.

Pressure30.03 inHg
Wind9.7 mph S
Humidity47%
Visibility—
Dew point35°
Thu, 2958° / 42°0Overcast
58 °Overcast

River Sioux, Thursday, 29 October

Overcast. High 58°, low 42°.

Pressure30.12 inHg
Wind10.7 mph N
Humidity61%
Visibility—
Dew point40°
Fri, 3043° / 33°0Clear
43 °Clear

River Sioux, Friday, 30 October

Clear. High 43°, low 33°.

Pressure30.68 inHg
Wind14.7 mph N
Humidity38%
Visibility—
Dew point15°

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.