Weather forecast for tomorrowDuncan, IA

Weather forecast for tomorrow

Sunday Oct 18, 2026

  • 66°F
  • 39°F
Sunny
Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 19mphSSW 197°
  • Humidity: 51%
  • UV index: 4
  • Sunrise: 7:32 am CDT
  • Sunset: 6:27 pm CDT
  • ▼
Tomorrow, on Sunday, sunny and dry conditions are anticipated.
Substantial temperature variations are forecasted, soaring to a maximum of a breezy 66.2°F and descending to a minimum of an icy 39.2°F.
Tomorrow, meteorological data suggests the high will feel more like September, based on a forecast of 66.2°F.
Sunrise will be at 7:32 am and sunset at 6:27 pm; tomorrow's daylight will last for 10h and 55min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 64°C.
Coldest hour: 6 am 41°C.

Chance of precipitation

Highest chance: 6 am 4%.

Hourly weather forecast

  • 12 am
  • 45°F
  • Feels like:
    37°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 14mphSSW 199°
  • Humidity: 67%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 43°F
  • Feels like:
    36°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 14mphSSW 201°
  • Humidity: 71%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 41°F
  • Feels like:
    34°F
Clear
Clear
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 14mphSSW 198°
  • Humidity: 75%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 41°F
  • Feels like:
    34°F
Clear
Clear
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 14mphSSW 198°
  • Humidity: 79%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:32 am
  • 8 am
  • 43°F
  • Feels like:
    36°F
Sunny
Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 14mphSSW 198°
  • Humidity: 78%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 50°F
  • Feels like:
    45°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 17mphSSW 200°
  • Humidity: 61%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 12 pm
  • 59°F
  • Feels like:
    55°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 18mphSSW 199°
  • Humidity: 46%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 2 pm
  • 63°F
  • Feels like:
    61°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 18mphSSW 197°
  • Humidity: 40%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 4 pm
  • 64°F
  • Feels like:
    63°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 17mphSSW 196°
  • Humidity: 36%
  • Pressure: 30.12"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 61°F
  • Feels like:
    59°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 12mphS 188°
  • Humidity: 39%
  • Pressure: 30.12"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:27 pm
  • 8 pm
  • 54°F
  • Feels like:
    50°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 9mphS 184°
  • Humidity: 58%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 48°F
  • Feels like:
    45°F
Clear
Clear
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 7mphSSW 191°
  • Humidity: 68%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, mainly sunny weather and a cloudless sky are anticipated.
The temperature will vary between a minimum of 41°F and a maximum of 64.4°F. The feels-like temperature will vary between a minimum of 33.8°F and a maximum of 62.6°F. The warmest part of the day will be from 3 pm to 5 pm.
The maximum temperature tomorrow will be more in line with September's average high of 72.7°F than October's typical of 57.7°F. The night temperature will be similar to the standard October low of 42.6°F.
Updated: Oct 17, 2026 @ 16:37:49 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, in Duncan, the weather remains calm, bright, and sunny.

Tomorrow, the highest temperature will be 66.2°F, while the lowest temperature will be 39.2°F.
Tomorrow, the maximum temperature will be slightly warmer than the average highest temperature in October. Tomorrow, the lowest temperature will be in line with the average low temperature.

On Sunday, in Duncan, sunrise will be at 7:32 am and sunset at 6:27 pm (CDT).

Tomorrow, the daylight will last for 10h and 55min.