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As of 13:19 CDT

Weather in River Sioux, IA

70°Current weather

River Sioux, Tuesday, 20 October, 13:19

Clear. Feels like 68°. High 70°, low 44°.

Pressure30.24 inHg
Wind11.5 mph SE
Humidity43%
Visibility6.2 mi
Dew point46°
Wed, 2173° / 50°0Clear
73 °Clear

River Sioux, Wednesday, 21 October

Clear. High 73°, low 50°.

Pressure30.21 inHg
Wind5.2 mph S
Humidity65%
Visibility6.2 mi
Dew point54°
Thu, 2274° / 50°0Clear
74 °Clear

River Sioux, Thursday, 22 October

Clear. High 74°, low 50°.

Pressure30.24 inHg
Wind7.8 mph S
Humidity60%
Visibility6.2 mi
Dew point54°
Fri, 2374° / 57°0Overcast
74 °Overcast

River Sioux, Friday, 23 October

Overcast. High 74°, low 57°.

Pressure30.09 inHg
Wind14.5 mph S
Humidity54%
Visibility6.2 mi
Dew point51°
Sat, 2470° / 55°0.03Light rain
70 °Light rain

River Sioux, Saturday, 24 October

Light rain. High 70°, low 55°.

Pressure30.15 inHg
Wind8.6 mph SW
Humidity58%
Visibility6.2 mi
Dew point53°
Sun, 2560° / 54°0.06Light rain
60 °Light rain

River Sioux, Sunday, 25 October

Light rain. High 60°, low 54°.

Pressure30.39 inHg
Wind8.7 mph N
Humidity57%
Visibility—
Dew point43°
Mon, 2652° / 40°0.94Heavy rain
52 °Heavy rain

River Sioux, Monday, 26 October

Heavy rain. High 52°, low 40°.

Pressure30.36 inHg
Wind15 mph N
Humidity62%
Visibility—
Dew point31°
Tue, 2742° / 35°0Mostly clear
42 °Mostly clear

River Sioux, Tuesday, 27 October

Mostly clear. High 42°, low 35°.

Pressure30.65 inHg
Wind16.7 mph NW
Humidity50%
Visibility—
Dew point22°
Wed, 2853° / 31°0Clear
53 °Clear

River Sioux, Wednesday, 28 October

Clear. High 53°, low 31°.

Pressure30.27 inHg
Wind17.1 mph SW
Humidity46%
Visibility—
Dew point26°
Thu, 2951° / 36°0Clear
51 °Clear

River Sioux, Thursday, 29 October

Clear. High 51°, low 36°.

Pressure30.27 inHg
Wind12.2 mph NW
Humidity45%
Visibility—
Dew point26°
Fri, 3047° / 32°0Clear
47 °Clear

River Sioux, Friday, 30 October

Clear. High 47°, low 32°.

Pressure30.50 inHg
Wind7.2 mph N
Humidity43%
Visibility—
Dew point22°
Sat, 3156° / 36°0Overcast
56 °Overcast

River Sioux, Saturday, 31 October

Overcast. High 56°, low 36°.

Pressure30.09 inHg
Wind18.7 mph SW
Humidity61%
Visibility—
Dew point38°
Sun, 0153° / 39°0Clear
53 °Clear

River Sioux, Sunday, 1 November

Clear. High 53°, low 39°.

Pressure30.21 inHg
Wind11.1 mph N
Humidity48%
Visibility—
Dew point30°
Mon, 0261° / 39°0Mostly clear
61 °Mostly clear

River Sioux, Monday, 2 November

Mostly clear. High 61°, low 39°.

Pressure30.12 inHg
Wind16 mph S
Humidity51%
Visibility—
Dew point37°
Tue, 0358° / 55°0.41Rain
58 °Rain

River Sioux, Tuesday, 3 November

Rain. High 58°, low 55°.

Pressure29.85 inHg
Wind17.8 mph S
Humidity91%
Visibility—
Dew point54°
Wed, 0466° / 51°0.02Light rain
66 °Light rain

River Sioux, Wednesday, 4 November

Light rain. High 66°, low 51°.

Pressure29.97 inHg
Wind9.4 mph NW
Humidity48%
Visibility—
Dew point43°

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.