Weather forecast for 10 daysCaldwell, ID

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 73°F
  • 39°F
Sunny
Sunny
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 3mphWSW 247°
  • Humidity: 46%
  • UV index: 3
  • Sunrise: 8:05 am MDT
  • Sunset: 6:58 pm MDT
  • ▼
Tomorrow, on Sunday, sunshine and minimal clouds are also in the outlook.
A stark contrast will be evident between the daytime peak temperature of a temperate 73.4°F and the nighttime low of a wintry 39.2°F.
Expect temperatures to match September's average maximum of 78.3°F rather than October's 61.5°F.
Sunrise will be at 8:05 am and sunset at 6:58 pm; tomorrow's daylight will last for 10h and 53min.

10-day overview

Daily temperatures

Warmest day: Monday 77°C.
Coldest day: Friday 55°C.

Chance of precipitation

Highest chance: Thursday 52%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • min.
  • 37°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 6mphW 270°
  • Humidity: 52%
  • UV index: 0
  • Sunrise: 8:03 am MDT
  • Sunset: 7:00 pm MDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 73°F
  • 39°F
Sunny
Sunny
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 3mphWSW 247°
  • Humidity: 46%
  • UV index: 3
  • Sunrise: 8:05 am MDT
  • Sunset: 6:58 pm MDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 77°F
  • 41°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 7mphSSW 197°
  • Humidity: 39%
  • UV index: 3
  • Sunrise: 8:06 am MDT
  • Sunset: 6:56 pm MDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 73°F
  • 45°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 5mphWNW 298°
  • Humidity: 46%
  • UV index: 3
  • Sunrise: 8:07 am MDT
  • Sunset: 6:55 pm MDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 73°F
  • 46°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 19%
  • Precipitation: 0"
  • Wind: 6mphSSE 165°
  • Humidity: 59%
  • UV index: 3
  • Sunrise: 8:08 am MDT
  • Sunset: 6:53 pm MDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 66°F
  • 48°F
Showers
Showers
  • Precip. probability: 52%
  • Precipitation: 0.28"
  • Wind: 7mphWSW 254°
  • Humidity: 72%
  • UV index: 3
  • Sunrise: 8:10 am MDT
  • Sunset: 6:52 pm MDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 55°F
  • 36°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 14mphWNW 299°
  • Humidity: 65%
  • UV index: 3
  • Sunrise: 8:11 am MDT
  • Sunset: 6:50 pm MDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 57°F
  • 37°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 7mphSSW 205°
  • Humidity: 61%
  • UV index: 3
  • Sunrise: 8:12 am MDT
  • Sunset: 6:49 pm MDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 59°F
  • 37°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 12%
  • Precipitation: 0"
  • Wind: 8mphSSW 203°
  • Humidity: 66%
  • UV index: 3
  • Sunrise: 8:13 am MDT
  • Sunset: 6:47 pm MDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 57°F
  • 37°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 6mphWSW 256°
  • Humidity: 65%
  • UV index: 3
  • Sunrise: 8:15 am MDT
  • Sunset: 6:46 pm MDT
  • ▼
Models point to a combination of cloud-filled, clear and rain-filled weather is predicted.
With a 52% probability, rainfall is forecasted only for Thursday. Expected precipitation will be light at 0.28".
Temperature differences will be noticeable in the upcoming period. The temperature is expected to swing from 55.4°F up to 77°F, while the lowest nightly temperature differences will be also quite pronounced, as temperatures overnight will fluctuate from 35.6°F up to 48.2°F.
The warmest day will be Monday, with a maximum of 77°F; the lowest daytime temperature of the period will be reached on Friday, peaking at 55.4°F.
Updated: Oct 18, 2026 @ 00:43:34 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Tomorrow, expect consistent sunshine and open skies.

Tomorrow, the maximum temperature will be 73.4°F, while the minimum temperature will be 39.2°F.
Tomorrow, the highest temperature will be uncommonly higher than the average maximum of 61.5°F in October. The lowest temperature will be relatively lower than the average low of 44.2°F.

On Sunday, in Caldwell, sunrise will be at 8:05 am and sunset at 6:58 pm (MDT).

In Caldwell, tomorrow, there will be 10h and 53min of daylight.