Weather forecast for 10 daysIona, ID

Weather forecast for the weekend

Saturday Oct 17, 2026

  • 68°F
  • 30°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphSW 221°
  • Humidity: 35%
  • UV index: 4
  • Sunrise: 7:44 am MDT
  • Sunset: 6:41 pm MDT
  • ▼
On Saturday, in Iona, sunshine will likely continue with scattered clouds at most.
Dramatic changes in temperature are anticipated, reaching a high of a pleasant 68°F and falling to a low of a harsh 30.2°F.
The temperature of 68°F aligns more with what is typical in September than what is normal in October.
Sunrise was at 7:44 am and sunset will be at 6:41 pm; the daylight will last for 10h and 56min.

Sunday Oct 18, 2026

  • 66°F
  • 34°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 6mphWSW 243°
  • Humidity: 51%
  • UV index: 4
  • Sunrise: 7:45 am MDT
  • Sunset: 6:39 pm MDT
  • ▼
Tomorrow, on Sunday, October 18, sunshine will dominate, with only occasional cloud cover.
Temperature fluctuations will be substantial, ranging from a peak of a breezy 66.2°F to a low of a wintry 33.8°F.
Tomorrow, expect a warmer trend, with a high of 66.2°F more common in September.
Sunrise will be at 7:45 am and sunset at 6:39 pm; tomorrow's daylight will last for 10h and 54min.

10-day overview

Daily temperatures

Maximum temperature: 68°C.
Coldest day: Friday 48°C.

Chance of precipitation

Highest chance: Friday 67%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • 68°F
  • 30°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphSW 221°
  • Humidity: 35%
  • UV index: 4
  • Sunrise: 7:44 am MDT
  • Sunset: 6:41 pm MDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 66°F
  • 34°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 6mphWSW 243°
  • Humidity: 51%
  • UV index: 4
  • Sunrise: 7:45 am MDT
  • Sunset: 6:39 pm MDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 68°F
  • 41°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 6mphSSW 203°
  • Humidity: 52%
  • UV index: 3
  • Sunrise: 7:47 am MDT
  • Sunset: 6:38 pm MDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 64°F
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 6mphSSE 158°
  • Humidity: 64%
  • UV index: 3
  • Sunrise: 7:48 am MDT
  • Sunset: 6:36 pm MDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 66°F
  • 43°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 6mphSSE 167°
  • Humidity: 69%
  • UV index: 3
  • Sunrise: 7:49 am MDT
  • Sunset: 6:34 pm MDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 64°F
  • 43°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0.16"
  • Wind: 7mphSSE 160°
  • Humidity: 71%
  • UV index: 3
  • Sunrise: 7:50 am MDT
  • Sunset: 6:33 pm MDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 48°F
  • 34°F
Rain
Rain
  • Precip. probability: 67%
  • Precipitation: 0.31"
  • Wind: 13mphSW 218°
  • Humidity: 94%
  • UV index: 1
  • Sunrise: 7:52 am MDT
  • Sunset: 6:31 pm MDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 52°F
  • 36°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 13%
  • Precipitation: 0"
  • Wind: 8mphSW 216°
  • Humidity: 72%
  • UV index: 3
  • Sunrise: 7:53 am MDT
  • Sunset: 6:30 pm MDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 55°F
  • 36°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 19%
  • Precipitation: 0"
  • Wind: 7mphS 190°
  • Humidity: 70%
  • UV index: 3
  • Sunrise: 7:54 am MDT
  • Sunset: 6:28 pm MDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 55°F
  • 34°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 7mphS 187°
  • Humidity: 67%
  • UV index: 3
  • Sunrise: 7:55 am MDT
  • Sunset: 6:27 pm MDT
  • ▼
Models point to a combination of cloud-filled, sunny and damp weather is forecasted.
Rainfall is forecasted for Thursday and Friday.
Expect a substantial fluctuation in daytime highs in the upcoming days. Forecast highs will fluctuate between 48.2°F and 68°F, while the fluctuation in night temperatures will be also significant, as temperatures overnight will fluctuate from 30.2°F up to 42.8°F.
The warmest days in Iona will be Saturday and Monday, with a maximum of 68°F; expect the coldest day on Friday with a high of 48.2°F.
Updated: Oct 17, 2026 @ 19:02:51 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Saturday, in Iona, sunny and dry conditions are anticipated.

Today, the highest temperature will be 68°F, while the lowest temperature will be 30.2°F.
The maximum temperature today will be significantly higher than the average highest temperature of 55.6°F in October. The lowest temperature will be a couple of degrees lower than the average low of 37.2°F.

On Saturday, in Iona, sunrise was at 7:44 am and sunset will be at 6:41 pm (MDT).

In Iona, the length of the day today will be 10h and 56min.

On Sunday, expect brilliant sunshine under mostly clear skies.

Tomorrow, the maximum temperature will be 66.2°F, while the minimum temperature will be 33.8°F.
The maximum temperature will be noticeably higher than the average highest temperature of 55.6°F in October. The lowest temperature will be in line with the average low of 37.2°F.

On Sunday, in Iona, sunrise will be at 7:45 am and sunset at 6:39 pm (MDT).

In Iona, the length of the day tomorrow will be 10h and 54min.