How is the weather in Duncan, IA?

At 8:55 AM on Wed, Sep 24, 2025 it is partly cloudy with mist and fog and 57 degrees Fahrenheit, feeling like 57 degrees.

Duncan, IA Weather Forecast and Current Conditions

57°F
Feels Like 57°F

Humidity 94% Dew Point 55°F Wind NW 5 MPH Barometer 30.14 in.765.6 mm

Solar Rad 278 w/m2 Visibility 5 mi.

Report from 10.1 miles NNE of central Duncan at 8:55 AM Wed, Sep 24, 2025

Current Weather

57°F
Feels Like 57°F

Humidity 94% Dew Point 55°F Wind NW 5 MPH Barometer 30.14 in.765.6 mm

Solar Rad 278 w/m2 Visibility 5 mi.

Report from 10.1 miles NNE of central Duncan at 8:55 AM Wed, Sep 24, 2025

Forecast at a Glance

WedSep 24

20%

72°

50°

ThuSep 25

20%

78°

53°

FriSep 26

82°

56°

SatSep 27

78°

51°

SunSep 28

82°

57°

MonSep 29

83°

61°

TueSep 30

79°

60°

This Date in Weather History

1926 - The temperature at Yellowstone Park dipped to nine degrees below zero. It was the coldest reading of record in the U.S. during September. Severe freezes were widespread over the northwestern U.S. causing great crop destruction. In Washington State, Spokane County experienced their earliest snow of record. Harney Branch Experiment Station in Oregon reported a temperature of 2 degrees above zero to establish a state record for the month of September.

Duncan 7 Day Weather Forecast Details

Wednesday Sep 24

Day: Mostly sunny, with a high near 73. North northeast wind 3 to 9 mph.

Night: Patchy fog after 5am. Mostly clear. Low around 50, with temperatures rising to around 52 overnight. North wind 2 to 7 mph.

Thursday Sep 25

Day: Patchy fog before 9am. Sunny. High near 78, with temperatures falling to around 75 in the afternoon. West wind 2 to 6 mph.

Night: Clear. Low around 53, with temperatures rising to around 56 overnight. Southwest wind around 5 mph.

Friday Sep 26

Day: Sunny, with a high near 82. Southwest wind 3 to 7 mph.

Night: Mostly clear, with a low around 57.

Saturday Sep 27

Day: Sunny, with a high near 78.

Night: Clear, with a low around 51.

Sunday Sep 28

Day: Sunny, with a high near 82.

Night: Mostly clear, with a low around 58.

Monday Sep 29

Day: Sunny, with a high near 83.

Night: Partly cloudy, with a low around 59.

Tuesday Sep 30

Day: Mostly sunny, with a high near 82.

Night: Partly cloudy, with a low around 59.

Sun & Moon Monthly

First Light 6:37 AM

Sunrise 7:05 AM

Sunset 7:10 PM

Last Light 7:38 PM

Moonrise 10:07 AM

Moonset 8:07 PM

Moon Phase

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