As of 08:58 CDT

Weather in River Sioux, IA

73°

River Sioux, Monday, 12 October, 08:58

Overcast. Feels like 73°. High 90°, low 61°.

Pressure29.68 inHg

Wind11.3 mph S

Humidity71%

Visibility6.2 mi

Dew point63°

See detailed hourly forecast

Tue, 1373° / 53°

73 °

River Sioux, Tuesday, 13 October

Mostly clear. High 73°, low 53°.

Pressure29.94 inHg

Wind8.4 mph N

Humidity58%

Visibility6.2 mi

Dew point48°

Wed, 1464° / 52°

0.06

64 °

River Sioux, Wednesday, 14 October

Rain. High 64°, low 52°.

Pressure30.15 inHg

Wind8.6 mph NE

Humidity54%

Visibility6.2 mi

Dew point44°

Thu, 1561° / 56°

0.04

61 °

River Sioux, Thursday, 15 October

Light rain. High 61°, low 56°.

Pressure30.15 inHg

Wind12.5 mph N

Humidity69%

Visibility6.2 mi

Dew point50°

Fri, 1657° / 45°

57 °

River Sioux, Friday, 16 October

Clear. High 57°, low 45°.

Pressure30.68 inHg

Wind16.4 mph N

Humidity43%

Visibility—

Dew point31°

Sat, 1762° / 39°

62 °

River Sioux, Saturday, 17 October

Clear. High 62°, low 39°.

Pressure30.39 inHg

Wind13.7 mph S

Humidity36%

Visibility—

Dew point30°

Sun, 1867° / 46°

67 °

River Sioux, Sunday, 18 October

Clear. High 67°, low 46°.

Pressure30.00 inHg

Wind18.5 mph S

Humidity40%

Visibility—

Dew point36°

Mon, 1969° / 52°

69 °

River Sioux, Monday, 19 October

Overcast. High 69°, low 52°.

Pressure30.03 inHg

Wind12.2 mph S

Humidity55%

Visibility—

Dew point48°

Tue, 2067° / 56°

67 °

River Sioux, Tuesday, 20 October

Partly cloudy. High 67°, low 56°.

Pressure30.06 inHg

Wind13.6 mph SE

Humidity66%

Visibility—

Dew point52°

Wed, 2176° / 59°

0.22

76 °

River Sioux, Wednesday, 21 October

Light rain. High 76°, low 59°.

Pressure30.03 inHg

Wind18.6 mph S

Humidity57%

Visibility—

Dew point57°

Thu, 2268° / 65°

0.75

68 °

River Sioux, Thursday, 22 October

Rain. High 68°, low 65°.

Pressure30.06 inHg

Wind18.4 mph S

Humidity95%

Visibility—

Dew point64°

Fri, 2371° / 62°

2.03

71 °

River Sioux, Friday, 23 October

Heavy rain. High 71°, low 62°.

Pressure30.09 inHg

Wind24.9 mph S

Humidity92%

Visibility—

Dew point65°

Sat, 2469° / 55°

0.88

69 °

River Sioux, Saturday, 24 October

Heavy rain. High 69°, low 55°.

Pressure29.74 inHg

Wind24.7 mph S

Humidity50%

Visibility—

Dew point49°

Sun, 2557° / 48°

57 °

River Sioux, Sunday, 25 October

Partly cloudy. High 57°, low 48°.

Pressure30.27 inHg

Wind21.5 mph NW

Humidity48%

Visibility—

Dew point36°

Mon, 2665° / 43°

65 °

River Sioux, Monday, 26 October

Clear. High 65°, low 43°.

Pressure30.27 inHg

Wind9.7 mph W

Humidity45%

Visibility—

Dew point37°

Tue, 2764° / 49°

64 °

River Sioux, Tuesday, 27 October

Clear. High 64°, low 49°.

Pressure30.09 inHg

Wind17 mph N

Humidity53%

Visibility—

Dew point45°

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.