Weather forecast for 10 daysSaint Marys, IA

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 66°F
  • 41°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 16mphSSW 192°
  • Humidity: 56%
  • UV index: 4
  • Sunrise: 7:30 am CDT
  • Sunset: 6:29 pm CDT
  • ▼
Today, the weather remains calm, bright, and sunny.
The maximum expected temperature is an enjoyable 66.2°F, while the minimum temperature will be a cold 41°F.
The expected high will be a few degrees higher than October's standard temperature of 60.8°F.
Sunrise will be at 7:30 am and sunset at 6:29 pm; the daylight will last for 10h and 59min.

10-day overview

Daily temperatures

Warmest period: Thursday - Saturday 77°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
  • 41°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 16mphSSW 192°
  • Humidity: 56%
  • UV index: 4
  • Sunrise: 7:30 am CDT
  • Sunset: 6:29 pm CDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 68°F
  • 43°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 9mphS 178°
  • Humidity: 56%
  • UV index: 4
  • Sunrise: 7:31 am CDT
  • Sunset: 6:28 pm CDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 72°F
  • 48°F
Sunny
Sunny
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 10mphSSE 158°
  • Humidity: 55%
  • UV index: 4
  • Sunrise: 7:32 am CDT
  • Sunset: 6:26 pm CDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 75°F
  • 52°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 9mphS 190°
  • Humidity: 57%
  • UV index: 4
  • Sunrise: 7:33 am CDT
  • Sunset: 6:25 pm CDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 77°F
  • 54°F
Sunny
Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 8mphS 171°
  • Humidity: 57%
  • UV index: 4
  • Sunrise: 7:34 am CDT
  • Sunset: 6:23 pm CDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 77°F
  • 57°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 16mphSSE 159°
  • Humidity: 52%
  • UV index: 4
  • Sunrise: 7:36 am CDT
  • Sunset: 6:22 pm CDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 77°F
  • 55°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 16%
  • Precipitation: 0"
  • Wind: 15mphS 178°
  • Humidity: 43%
  • UV index: 3
  • Sunrise: 7:37 am CDT
  • Sunset: 6:20 pm CDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 73°F
  • 52°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 9mphSW 218°
  • Humidity: 55%
  • UV index: 3
  • Sunrise: 7:38 am CDT
  • Sunset: 6:19 pm CDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 70°F
  • 52°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 10%
  • Precipitation: 0"
  • Wind: 9mphSSE 153°
  • Humidity: 61%
  • UV index: 3
  • Sunrise: 7:39 am CDT
  • Sunset: 6:18 pm CDT
  • ▼
  • Tuesday
  • Oct 27, 2026
  • 72°F
  • 54°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0.08"
  • Wind: 11mphSSE 159°
  • Humidity: 60%
  • UV index: 3
  • Sunrise: 7:40 am CDT
  • Sunset: 6:16 pm CDT
  • ▼
For the coming ten days, a combination of cloudy and sun-filled weather is anticipated.
With a probability of 24%, rainfall is predicted only for next Tuesday. The precipitation will be minimal at 0.08".
In the coming days, the maximum temperature will range between 66.2°F and 77°F, while there will be a marked difference in overnight low temperatures, as temperatures overnight will fluctuate from 41°F up to 57.2°F.
The warmest days will be Thursday through Saturday, with a maximum of 77°F; today is the coldest day, with a maximum temperature of 66.2°F.
Updated: Oct 18, 2026 @ 09:32:10 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Today, in Saint Marys, sunny and dry conditions are anticipated.

Today, the maximum temperature will be 66.2°F, while the minimum temperature will be 41°F.
The highest temperature today will be relatively higher than the average maximum temperature in October. The lowest temperature will be in line with the average low of 44.6°F.

On Sunday, in Saint Marys, sunrise will be at 7:30 am and sunset at 6:29 pm (CDT).

In Saint Marys, today, there will be 10h and 59min of daylight.