Weather forecast for 10 daysHarrison, ID

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 64°F
  • 41°F
Sunny
Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 4mphNE 48°
  • Humidity: 54%
  • UV index: 3
  • Sunrise: 7:10 am PDT
  • Sunset: 5:53 pm PDT
  • ▼
On Sunday, October 18, skies are expected to be clear and full of sunshine.
Temperature is anticipated to swing from a high of a comfortable 64.4°F to a low of a wintry 41°F.
Tomorrow, the forecasted high of 64.4°F is more in line with September's average of 71.1°F than October's 55°F.
Sunrise will be at 7:10 am and sunset at 5:53 pm; tomorrow's daylight will last for 10h and 43min.

10-day overview

Daily temperatures

Warmest period: Tuesday - Wednesday 66°C.
Coldest period: Saturday - Sunday 52°C.

Chance of precipitation

Highest chance: 24%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • min.
  • 37°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 4mphESE 115°
  • Humidity: 75%
  • UV index: 0
  • Sunrise: 7:09 am PDT
  • Sunset: 5:55 pm PDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 64°F
  • 41°F
Sunny
Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 4mphNE 48°
  • Humidity: 54%
  • UV index: 3
  • Sunrise: 7:10 am PDT
  • Sunset: 5:53 pm PDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 63°F
  • 41°F
Cloudy
Cloudy
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 4mphNNE 15°
  • Humidity: 58%
  • UV index: 2
  • Sunrise: 7:12 am PDT
  • Sunset: 5:52 pm PDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 66°F
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 5mphNNE 24°
  • Humidity: 60%
  • UV index: 3
  • Sunrise: 7:13 am PDT
  • Sunset: 5:50 pm PDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 66°F
  • 45°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 4mphNE 50°
  • Humidity: 60%
  • UV index: 3
  • Sunrise: 7:14 am PDT
  • Sunset: 5:48 pm PDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 63°F
  • 43°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 18%
  • Precipitation: 0.08"
  • Wind: 5mphSSE 156°
  • Humidity: 68%
  • UV index: 2
  • Sunrise: 7:16 am PDT
  • Sunset: 5:46 pm PDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 54°F
  • 36°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 11mphSW 228°
  • Humidity: 66%
  • UV index: 2
  • Sunrise: 7:17 am PDT
  • Sunset: 5:44 pm PDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 52°F
  • 37°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 17%
  • Precipitation: 0.04"
  • Wind: 6mphESE 114°
  • Humidity: 65%
  • UV index: 2
  • Sunrise: 7:19 am PDT
  • Sunset: 5:43 pm PDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 52°F
  • 37°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 6mphENE 66°
  • Humidity: 71%
  • UV index: 2
  • Sunrise: 7:20 am PDT
  • Sunset: 5:41 pm PDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 54°F
  • 37°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 18%
  • Precipitation: 0"
  • Wind: 6mphNE 35°
  • Humidity: 70%
  • UV index: 2
  • Sunrise: 7:22 am PDT
  • Sunset: 5:39 pm PDT
  • ▼
Conditions over the next ten days suggest that primarily dull and occasionally mostly clear weather is forecasted.
Rain is predicted for Thursday and next Saturday.
Expect a substantial fluctuation in daytime highs in the upcoming days. Maximum temperatures are forecasted between 51.8°F and 66.2°F, while the low temperature range extends from 35.6°F to 44.6°F.
With a maximum temperature of 66.2°F, Tuesday and Wednesday will be the warmest days; with a maximum temperature of 51.8°F, next Saturday and Sunday will be the coldest days.
Updated: Oct 18, 2026 @ 06:16:18 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, skies will stay clear and sunny.

Tomorrow, the maximum temperature will be 64.4°F, while the minimum temperature will be 41°F.
The maximum temperature will be uncommonly higher than the average highest temperature of 55°F in October. The lowest temperature will be moderately higher than the average low of 36.9°F.

On Sunday, in Harrison, sunrise will be at 7:10 am and sunset at 5:53 pm (PDT).

Tomorrow, the daylight will last for 10h and 43min.