Weather forecast for 10 daysChallis, ID

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 68°F
  • 30°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 4mphNNW 337°
  • Humidity: 42%
  • UV index: 3
  • Sunrise: 7:56 am MDT
  • Sunset: 6:47 pm MDT
  • ▼
Tomorrow, in Challis, sunshine will prevail for most of the day.
Daytime will experience a high of a pleasant 68°F, significantly differing from the forecasted night low of a freezing 30.2°F.
Tomorrow, climate comparisons show a temperature closer to September's 65.7°F than October's 49.6°F.
Sunrise will be at 7:56 am and sunset at 6:47 pm; tomorrow's daylight will last for 10h and 52min.

10-day overview

Daily temperatures

Warmest period: tomorrow - Monday 68°C.
Coldest day: Friday 46°C.

Chance of precipitation

Highest chance: Friday 60%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • min.
  • 32°F
Mostly Clear
Mostly Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 4mphSW 235°
  • Humidity: 56%
  • UV index: 0
  • Sunrise: 7:55 am MDT
  • Sunset: 6:49 pm MDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 68°F
  • 30°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 4mphNNW 337°
  • Humidity: 42%
  • UV index: 3
  • Sunrise: 7:56 am MDT
  • Sunset: 6:47 pm MDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 68°F
  • 34°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 7mphENE 67°
  • Humidity: 45%
  • UV index: 3
  • Sunrise: 7:57 am MDT
  • Sunset: 6:46 pm MDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 64°F
  • 36°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 4mphNNE 16°
  • Humidity: 56%
  • UV index: 3
  • Sunrise: 7:58 am MDT
  • Sunset: 6:44 pm MDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 63°F
  • 37°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 4mphNNE 28°
  • Humidity: 67%
  • UV index: 3
  • Sunrise: 8:00 am MDT
  • Sunset: 6:42 pm MDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 61°F
  • 39°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0.12"
  • Wind: 6mphWSW 246°
  • Humidity: 74%
  • UV index: 3
  • Sunrise: 8:01 am MDT
  • Sunset: 6:41 pm MDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 46°F
  • 27°F
Showers
Showers
  • Precip. probability: 60%
  • Precipitation: 0.16"
  • Wind: 7mphNNW 337°
  • Humidity: 86%
  • UV index: 2
  • Sunrise: 8:02 am MDT
  • Sunset: 6:39 pm MDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 48°F
  • 28°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 5mphN 6°
  • Humidity: 68%
  • UV index: 3
  • Sunrise: 8:04 am MDT
  • Sunset: 6:37 pm MDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 48°F
  • 28°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 23%
  • Precipitation: 0"
  • Wind: 5mphNNW 338°
  • Humidity: 72%
  • UV index: 3
  • Sunrise: 8:05 am MDT
  • Sunset: 6:36 pm MDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 48°F
  • 28°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 19%
  • Precipitation: 0"
  • Wind: 4mphNNW 339°
  • Humidity: 68%
  • UV index: 3
  • Sunrise: 8:06 am MDT
  • Sunset: 6:34 pm MDT
  • ▼
For the next ten days, a combination of dull, sunny and showery weather is expected.
Rain is anticipated on Thursday and Friday.
Expect a substantial fluctuation in daytime highs in the coming days. Maximum temperatures are forecasted between 46.4°F and 68°F, while the variation in nighttime lows will be also notably wide, as the lowest temperatures will be recorded between 26.6°F and 39.2°F.
The warmest days will be Sunday and Monday, with a maximum of 68°F; Friday will be the coldest day, with the highest temperature of 46.4°F.
Updated: Oct 18, 2026 @ 03:02:50 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Tomorrow, in Challis, sunshine will dominate, with only occasional cloud cover.

Tomorrow, the highest temperature will be 68°F, while the lowest temperature will be 30.2°F.
The highest temperature will be notably higher than the average maximum of 49.6°F in October. Tomorrow, the lowest temperature will be in line with the average low temperature.

On Sunday, in Challis, sunrise will be at 7:56 am and sunset at 6:47 pm (MDT).

In Challis, tomorrow, there will be 10h and 52min of daylight.