Weather forecast for 10 daysAltamont, WY

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 61°F
  • 36°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 10mphWSW 244°
  • Humidity: 34%
  • UV index: 4
  • Sunrise: 7:38 am MDT
  • Sunset: 6:37 pm MDT
  • ▼
On Sunday, October 18, expect a partly sunny afternoon with variable cloud cover.
The maximum temperature will be an enjoyable 60.8°F, while the minimum expected temperature is a wintry 35.6°F.
Tomorrow, weather will feel warmer as the high trends toward September's average of 68.5°F.
Sunrise will be at 7:38 am and sunset at 6:37 pm; tomorrow's daylight will last for 10h and 59min.

10-day overview

Daily temperatures

Warmest day: Wednesday 63°C.
Coldest period: Friday - Saturday 46°C.

Chance of precipitation

Highest chance: Friday 51%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • min.
  • 36°F
Mostly Clear
Mostly Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 8mphS 186°
  • Humidity: 46%
  • UV index: 0
  • Sunrise: 7:37 am MDT
  • Sunset: 6:39 pm MDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 61°F
  • 36°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 10mphWSW 244°
  • Humidity: 34%
  • UV index: 4
  • Sunrise: 7:38 am MDT
  • Sunset: 6:37 pm MDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 61°F
  • 39°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 6mphSW 229°
  • Humidity: 52%
  • UV index: 4
  • Sunrise: 7:39 am MDT
  • Sunset: 6:36 pm MDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 61°F
  • 39°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 6mphSW 222°
  • Humidity: 59%
  • UV index: 3
  • Sunrise: 7:40 am MDT
  • Sunset: 6:35 pm MDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 63°F
  • 43°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 7mphSSE 156°
  • Humidity: 58%
  • UV index: 4
  • Sunrise: 7:41 am MDT
  • Sunset: 6:33 pm MDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 59°F
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0.24"
  • Wind: 8mphS 176°
  • Humidity: 68%
  • UV index: 4
  • Sunrise: 7:43 am MDT
  • Sunset: 6:32 pm MDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 46°F
  • 34°F
Showers
Showers
  • Precip. probability: 51%
  • Precipitation: 0.24"
  • Wind: 15mphWSW 240°
  • Humidity: 81%
  • UV index: 2
  • Sunrise: 7:44 am MDT
  • Sunset: 6:30 pm MDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 46°F
  • 34°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 10mphWSW 251°
  • Humidity: 67%
  • UV index: 4
  • Sunrise: 7:45 am MDT
  • Sunset: 6:29 pm MDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 54°F
  • 37°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 9mphSSW 195°
  • Humidity: 57%
  • UV index: 4
  • Sunrise: 7:46 am MDT
  • Sunset: 6:27 pm MDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 54°F
  • 36°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 10mphSW 217°
  • Humidity: 57%
  • UV index: 4
  • Sunrise: 7:47 am MDT
  • Sunset: 6:26 pm MDT
  • ▼
For the next ten days, a combination of gloomy, clear and damp weather is anticipated.
With light precipitation of 0.24", rainfall is predicted for Thursday and Friday.
Noticeable swings in temperature are expected in the upcoming days. Maximum temperatures are forecasted between 46.4°F and 62.6°F, while the low temperature range extends from 33.8°F to 42.8°F.
Wednesday will be the warmest day, with a maximum temperature of 62.6°F; Friday and next Saturday, with the highest temperature of 46.4°F, will be the coldest days in Altamont.
Updated: Oct 18, 2026 @ 01:39:52 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, moderate cloud cover will mix with sunshine throughout the day.

Tomorrow, the highest temperature will be 60.8°F, while the lowest temperature will be 35.6°F.
The highest temperature will be a couple of degrees higher than the average maximum of 51.8°F in October. Tomorrow, the lowest temperature will be in line with the average low temperature.

On Sunday, in Altamont, sunrise will be at 7:38 am and sunset at 6:37 pm (MDT).

In Altamont, the length of the day tomorrow will be 10h and 59min.