As of 13:16 CDT

Weather in River Sioux, IA

54°

River Sioux, Wednesday, 14 October, 13:16

Overcast. Feels like 52°. High 60°, low 48°.

Pressure30.15 inHg

Wind6.9 mph N

Humidity71%

Visibility6.2 mi

Dew point45°

See detailed hourly forecast

Thu, 1559° / 50°

1.87

59 °

River Sioux, Thursday, 15 October

Heavy rain. High 59°, low 50°.

Pressure30.00 inHg

Wind15.7 mph N

Humidity95%

Visibility4.2 mi

Dew point52°

Fri, 1654° / 43°

54 °

River Sioux, Friday, 16 October

Partly cloudy. High 54°, low 43°.

Pressure30.56 inHg

Wind21.2 mph N

Humidity51%

Visibility6.2 mi

Dew point32°

Sat, 1759° / 36°

59 °

River Sioux, Saturday, 17 October

Clear. High 59°, low 36°.

Pressure30.53 inHg

Wind12.5 mph S

Humidity43%

Visibility6.2 mi

Dew point31°

Sun, 1864° / 44°

64 °

River Sioux, Sunday, 18 October

Clear. High 64°, low 44°.

Pressure30.24 inHg

Wind14.5 mph S

Humidity55%

Visibility6.2 mi

Dew point40°

Mon, 1964° / 47°

64 °

River Sioux, Monday, 19 October

Overcast. High 64°, low 47°.

Pressure30.18 inHg

Wind12.6 mph S

Humidity59%

Visibility—

Dew point46°

Tue, 2071° / 50°

71 °

River Sioux, Tuesday, 20 October

Clear. High 71°, low 50°.

Pressure30.15 inHg

Wind13.1 mph S

Humidity47%

Visibility—

Dew point45°

Wed, 2174° / 55°

0.08

74 °

River Sioux, Wednesday, 21 October

Light rain. High 74°, low 55°.

Pressure29.97 inHg

Wind14.8 mph S

Humidity58%

Visibility—

Dew point55°

Thu, 2268° / 56°

68 °

River Sioux, Thursday, 22 October

Overcast. High 68°, low 56°.

Pressure30.12 inHg

Wind11 mph N

Humidity53%

Visibility—

Dew point47°

Fri, 2370° / 58°

0.39

70 °

River Sioux, Friday, 23 October

Rain. High 70°, low 58°.

Pressure29.83 inHg

Wind19.4 mph S

Humidity86%

Visibility—

Dew point63°

Sat, 2468° / 46°

0.13

68 °

River Sioux, Saturday, 24 October

Rain. High 68°, low 46°.

Pressure30.18 inHg

Wind22.6 mph NW

Humidity45%

Visibility—

Dew point35°

Sun, 2561° / 41°

61 °

River Sioux, Sunday, 25 October

Clear. High 61°, low 41°.

Pressure30.45 inHg

Wind12.2 mph S

Humidity31%

Visibility—

Dew point25°

Mon, 2667° / 45°

67 °

River Sioux, Monday, 26 October

Clear. High 67°, low 45°.

Pressure30.12 inHg

Wind12.4 mph SW

Humidity35%

Visibility—

Dew point33°

Tue, 2760° / 48°

0.02

60 °

River Sioux, Tuesday, 27 October

Light rain. High 60°, low 48°.

Pressure29.85 inHg

Wind14 mph S

Humidity52%

Visibility—

Dew point41°

Wed, 2854° / 45°

0.04

54 °

River Sioux, Wednesday, 28 October

Light rain. High 54°, low 45°.

Pressure29.88 inHg

Wind20 mph NW

Humidity73%

Visibility—

Dew point42°

Thu, 2961° / 39°

61 °

River Sioux, Thursday, 29 October

Mostly clear. High 61°, low 39°.

Pressure30.12 inHg

Wind10.5 mph S

Humidity38%

Visibility—

Dew point29°

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.