Weather forecast for 10 daysGrass Creek, WY

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 64°F
  • 39°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphNNE 27°
  • Humidity: 29%
  • UV index: 3
  • Sunrise: 7:33 am MDT
  • Sunset: 6:26 pm MDT
  • ▼
On Sunday, October 18, sun-filled skies will remain for most of the day.
Temperatures are anticipated to range from a maximum of an enjoyable 64.4°F to a minimum of a wintry 39.2°F.
A forecast high of 64.4°F brings conditions more familiar to September's average than October's.
Sunrise will be at 7:33 am and sunset at 6:26 pm; the daylight will last for 10h and 53min.

10-day overview

Daily temperatures

Maximum temperature: 68°C.
Minimum temperature: 48°C.

Chance of precipitation

Highest chance: Friday 54%.

Long-term weather forecast

  • Sunday
  • Oct 18, 2026
  • 64°F
  • 39°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphNNE 27°
  • Humidity: 29%
  • UV index: 3
  • Sunrise: 7:33 am MDT
  • Sunset: 6:26 pm MDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 66°F
  • 45°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphSE 133°
  • Humidity: 35%
  • UV index: 3
  • Sunrise: 7:34 am MDT
  • Sunset: 6:24 pm MDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 68°F
  • 43°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 7mphNE 52°
  • Humidity: 37%
  • UV index: 3
  • Sunrise: 7:35 am MDT
  • Sunset: 6:22 pm MDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 66°F
  • 46°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 9mphSSE 153°
  • Humidity: 46%
  • UV index: 3
  • Sunrise: 7:37 am MDT
  • Sunset: 6:21 pm MDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 68°F
  • 48°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 10mphSSE 166°
  • Humidity: 47%
  • UV index: 3
  • Sunrise: 7:38 am MDT
  • Sunset: 6:19 pm MDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 61°F
  • 34°F
PM Showers
PM Showers
  • Precip. probability: 54%
  • Precipitation: 0"
  • Wind: 12mphNW 306°
  • Humidity: 54%
  • UV index: 3
  • Sunrise: 7:39 am MDT
  • Sunset: 6:18 pm MDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 48°F
  • 36°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 18%
  • Precipitation: 0.2"
  • Wind: 9mphNE 55°
  • Humidity: 62%
  • UV index: 3
  • Sunrise: 7:40 am MDT
  • Sunset: 6:16 pm MDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 55°F
  • 37°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 9mphSE 136°
  • Humidity: 56%
  • UV index: 3
  • Sunrise: 7:42 am MDT
  • Sunset: 6:15 pm MDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 54°F
  • 36°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 14%
  • Precipitation: 0"
  • Wind: 8mphNNE 33°
  • Humidity: 58%
  • UV index: 3
  • Sunrise: 7:43 am MDT
  • Sunset: 6:13 pm MDT
  • ▼
  • Tuesday
  • Oct 27, 2026
  • 48°F
  • 34°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 9%
  • Precipitation: 0"
  • Wind: 7mphN 358°
  • Humidity: 59%
  • UV index: 3
  • Sunrise: 7:44 am MDT
  • Sunset: 6:12 pm MDT
  • ▼
Looking ahead, conditions suggest a period of sunny, gloomy and rain-filled weather is anticipated.
With a 18% probability, rainfall is anticipated only on Saturday. The precipitation will be light at 0.2".
There will be a considerable variation in temperature in the coming days. The maximum temperature will vary between 48.2°F and 68°F, while the lowest night temperatures will vary also significantly, as temperatures overnight will fluctuate from 33.8°F up to 48.2°F.
Tuesday and Thursday, with the highest temperature of 68°F, will be the warmest days; Saturday and next Tuesday, with the highest temperature of 48.2°F, will be the coldest days.
Updated: Oct 18, 2026 @ 07:47:32 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, a pleasant, mostly sunny outlook is in place.

Today, the highest temperature will be 64.4°F, while the lowest temperature will be 39.2°F.
Today, the highest temperature will be noticeably higher than the average maximum of 48.9°F in October. The lowest temperature today will be a couple of degrees higher than the average low temperature.

On Sunday, in Grass Creek, sunrise will be at 7:33 am and sunset at 6:26 pm (MDT).

In Grass Creek, the length of the day today will be 10h and 53min.