As of 05:49 CDT

Weather in River Sioux, IA

48°

River Sioux, Thursday, 22 October, 05:49

Fog. Feels like 48°. High 79°, low 48°.

Pressure30.18 inHg

Wind0 mph N

Humidity100%

Visibility4.0 mi

Dew point48°

See detailed hourly forecast

Fri, 2378° / 56°

78 °

River Sioux, Friday, 23 October

Overcast. High 78°, low 56°.

Pressure30.06 inHg

Wind13.3 mph SE

Humidity55%

Visibility6.2 mi

Dew point52°

Sat, 2477° / 54°

77 °

River Sioux, Saturday, 24 October

Overcast. High 77°, low 54°.

Pressure30.15 inHg

Wind9.9 mph S

Humidity50%

Visibility6.2 mi

Dew point51°

Sun, 2572° / 51°

72 °

River Sioux, Sunday, 25 October

Overcast. High 72°, low 51°.

Pressure30.33 inHg

Wind3.2 mph E

Humidity64%

Visibility6.2 mi

Dew point53°

Mon, 2674° / 58°

74 °

River Sioux, Monday, 26 October

Overcast. High 74°, low 58°.

Pressure30.27 inHg

Wind9.5 mph SE

Humidity62%

Visibility—

Dew point53°

Tue, 2769° / 54°

0.07

69 °

River Sioux, Tuesday, 27 October

Light rain. High 69°, low 54°.

Pressure30.09 inHg

Wind12.9 mph S

Humidity52%

Visibility—

Dew point49°

Wed, 2859° / 42°

59 °

River Sioux, Wednesday, 28 October

Partly cloudy. High 59°, low 42°.

Pressure30.15 inHg

Wind9.5 mph S

Humidity68%

Visibility—

Dew point44°

Thu, 2958° / 55°

0.28

58 °

River Sioux, Thursday, 29 October

Rain. High 58°, low 55°.

Pressure29.97 inHg

Wind7.7 mph E

Humidity90%

Visibility—

Dew point54°

Fri, 3060° / 52°

0.01

60 °

River Sioux, Friday, 30 October

Light rain. High 60°, low 52°.

Pressure29.80 inHg

Wind7.7 mph N

Humidity85%

Visibility—

Dew point53°

Sat, 3165° / 47°

65 °

River Sioux, Saturday, 31 October

Mostly clear. High 65°, low 47°.

Pressure29.83 inHg

Wind9.2 mph W

Humidity63%

Visibility—

Dew point47°

Sun, 0163° / 48°

63 °

River Sioux, Sunday, 1 November

Clear. High 63°, low 48°.

Pressure30.03 inHg

Wind11.2 mph N

Humidity42%

Visibility—

Dew point36°

Mon, 0259° / 45°

59 °

River Sioux, Monday, 2 November

Overcast. High 59°, low 45°.

Pressure30.27 inHg

Wind6.4 mph NE

Humidity49%

Visibility—

Dew point36°

Tue, 0357° / 42°

57 °

River Sioux, Tuesday, 3 November

Overcast. High 57°, low 42°.

Pressure30.39 inHg

Wind6.5 mph E

Humidity47%

Visibility—

Dew point33°

Wed, 0455° / 40°

55 °

River Sioux, Wednesday, 4 November

Overcast. High 55°, low 40°.

Pressure30.42 inHg

Wind9 mph SE

Humidity50%

Visibility—

Dew point33°

Thu, 0556° / 38°

56 °

River Sioux, Thursday, 5 November

Overcast. High 56°, low 38°.

Pressure30.30 inHg

Wind6.2 mph SE

Humidity49%

Visibility—

Dew point32°

Fri, 0659° / 40°

59 °

River Sioux, Friday, 6 November

Clear. High 59°, low 40°.

Pressure30.21 inHg

Wind6.1 mph S

Humidity47%

Visibility—

Dew point34°

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.