Weather forecast for 10 daysCastle Grove, IA

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 66°F
  • 39°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 15mphSSW 195°
  • Humidity: 61%
  • UV index: 4
  • Sunrise: 7:21 am CDT
  • Sunset: 6:18 pm CDT
  • ▼
Today, on Sunday, October 18, sunny skies and pleasant visibility are expected.
Considerable temperature fluctuations from a high of an enjoyable 66.2°F to a low of a wintry 39.2°F are anticipated.
This October day will feature warmer weather, consistent with September's average of 73°F.
Sunrise will be at 7:21 am and sunset at 6:18 pm; the daylight will last for 10h and 57min.

10-day overview

Daily temperatures

Warmest period: Thursday - Sunday 75°C.
Coldest day: today 66°C.

Chance of precipitation

Highest chance: Tuesday 27.10. 24%.

Long-term weather forecast

  • Sunday
  • Oct 18, 2026
  • 66°F
  • 39°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 15mphSSW 195°
  • Humidity: 61%
  • UV index: 4
  • Sunrise: 7:21 am CDT
  • Sunset: 6:18 pm CDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 70°F
  • 39°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 5mphS 175°
  • Humidity: 59%
  • UV index: 4
  • Sunrise: 7:23 am CDT
  • Sunset: 6:17 pm CDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 70°F
  • 43°F
Sunny
Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 6mphSE 138°
  • Humidity: 57%
  • UV index: 4
  • Sunrise: 7:24 am CDT
  • Sunset: 6:15 pm CDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 73°F
  • 46°F
Sunny
Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 6mphS 179°
  • Humidity: 62%
  • UV index: 4
  • Sunrise: 7:25 am CDT
  • Sunset: 6:14 pm CDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 75°F
  • 48°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 5mphSE 145°
  • Humidity: 62%
  • UV index: 4
  • Sunrise: 7:26 am CDT
  • Sunset: 6:12 pm CDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 75°F
  • 52°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 18%
  • Precipitation: 0"
  • Wind: 11mphSSE 147°
  • Humidity: 60%
  • UV index: 3
  • Sunrise: 7:27 am CDT
  • Sunset: 6:11 pm CDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 75°F
  • 54°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 12mphSSE 162°
  • Humidity: 52%
  • UV index: 3
  • Sunrise: 7:28 am CDT
  • Sunset: 6:09 pm CDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 75°F
  • 50°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 6mphSW 214°
  • Humidity: 58%
  • UV index: 3
  • Sunrise: 7:30 am CDT
  • Sunset: 6:08 pm CDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 70°F
  • 48°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 7mphESE 111°
  • Humidity: 64%
  • UV index: 3
  • Sunrise: 7:31 am CDT
  • Sunset: 6:07 pm CDT
  • ▼
  • Tuesday
  • Oct 27, 2026
  • 68°F
  • 50°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 8mphSE 129°
  • Humidity: 70%
  • UV index: 2
  • Sunrise: 7:32 am CDT
  • Sunset: 6:05 pm CDT
  • ▼
Weather patterns suggest that a combination of overcast and sunny weather is anticipated.
Rain is not forecasted in Castle Grove in the upcoming days.
In the upcoming days, the maximum temperature will range between 66.2°F and 75.2°F, while the variation in nighttime lows will be notably wide, as nighttime lows are forecast to fall between 39.2°F and 53.6°F.
With a maximum temperature of 75.2°F, Thursday through next Sunday will be the warmest days; today is the coldest day, with a maximum temperature of 66.2°F.
Updated: Oct 18, 2026 @ 09:01:00 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, sunny conditions are expected to continue.

Today, the maximum temperature will be 66.2°F, while the minimum temperature will be 39.2°F.
The maximum temperature will be moderately higher than the average highest temperature of 58.6°F in October. The lowest temperature today will be also moderately lower than the average low temperature.

On Sunday, in Castle Grove, sunrise will be at 7:21 am and sunset at 6:18 pm (CDT).

In Castle Grove, today, there will be 10h and 57min of daylight.