As of 06:33 CDT

Weather in River Sioux, IA

45°

River Sioux, Wednesday, 14 October, 06:33

Clear. Feels like 40°. High 61°, low 45°.

Pressure30.15 inHg

Wind8.1 mph N

Humidity93%

Visibility6.2 mi

Dew point43°

See detailed hourly forecast

Thu, 1558° / 51°

1.15

58 °

River Sioux, Thursday, 15 October

Heavy rain. High 58°, low 51°.

Pressure30.03 inHg

Wind13 mph N

Humidity96%

Visibility1.8 mi

Dew point53°

Fri, 1654° / 43°

54 °

River Sioux, Friday, 16 October

Partly cloudy. High 54°, low 43°.

Pressure30.53 inHg

Wind21.7 mph N

Humidity53%

Visibility6.2 mi

Dew point33°

Sat, 1759° / 36°

59 °

River Sioux, Saturday, 17 October

Clear. High 59°, low 36°.

Pressure30.53 inHg

Wind11.7 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

Wind13.9 mph S

Humidity50%

Visibility—

Dew point39°

Mon, 1966° / 48°

66 °

River Sioux, Monday, 19 October

Partly cloudy. High 66°, low 48°.

Pressure30.12 inHg

Wind13.8 mph S

Humidity58%

Visibility—

Dew point46°

Tue, 2068° / 48°

68 °

River Sioux, Tuesday, 20 October

Clear. High 68°, low 48°.

Pressure30.18 inHg

Wind13.1 mph S

Humidity58%

Visibility—

Dew point48°

Wed, 2170° / 52°

70 °

River Sioux, Wednesday, 21 October

Clear. High 70°, low 52°.

Pressure30.03 inHg

Wind13.4 mph N

Humidity47%

Visibility—

Dew point46°

Thu, 2260° / 44°

60 °

River Sioux, Thursday, 22 October

Clear. High 60°, low 44°.

Pressure30.30 inHg

Wind10.9 mph E

Humidity35%

Visibility—

Dew point29°

Fri, 2357° / 40°

0.01

57 °

River Sioux, Friday, 23 October

Light rain. High 57°, low 40°.

Pressure30.30 inHg

Wind13.5 mph SE

Humidity55%

Visibility—

Dew point36°

Sat, 2451° / 47°

0.37

51 °

River Sioux, Saturday, 24 October

Rain. High 51°, low 47°.

Pressure30.15 inHg

Wind12 mph SE

Humidity93%

Visibility—

Dew point46°

Sun, 2553° / 40°

53 °

River Sioux, Sunday, 25 October

Clear. High 53°, low 40°.

Pressure30.24 inHg

Wind13.3 mph NW

Humidity48%

Visibility—

Dew point31°

Mon, 2662° / 37°

62 °

River Sioux, Monday, 26 October

Clear. High 62°, low 37°.

Pressure29.94 inHg

Wind15.9 mph SW

Humidity42%

Visibility—

Dew point31°

Tue, 2762° / 42°

62 °

River Sioux, Tuesday, 27 October

Clear. High 62°, low 42°.

Pressure29.91 inHg

Wind6.2 mph E

Humidity55%

Visibility—

Dew point40°

Wed, 2858° / 47°

0.04

58 °

River Sioux, Wednesday, 28 October

Light rain. High 58°, low 47°.

Pressure29.85 inHg

Wind7.1 mph SE

Humidity81%

Visibility—

Dew point51°

Thu, 2963° / 51°

0.01

63 °

River Sioux, Thursday, 29 October

Light rain. High 63°, low 51°.

Pressure29.85 inHg

Wind11.3 mph S

Humidity72%

Visibility—

Dew point49°

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.