Weather forecast for 10 daysGuernsey, WY

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 72°F
  • 37°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 11mphNNE 13°
  • Humidity: 36%
  • UV index: 4
  • Sunrise: 7:15 am MDT
  • Sunset: 6:12 pm MDT
  • ▼
Today, in Guernsey, sunshine will lead the day, with clouds making only brief appearances.
Temperature readings will span from a daytime high of an agreeable 71.6°F to a night low of a cold 37.4°F.
Temperatures are trending warmer, with a peak resembling September's average maximum rather than October's seasonal high.
Sunrise will be at 7:15 am and sunset at 6:12 pm; the daylight will last for 10h and 57min.

10-day overview

Daily temperatures

Warmest period: Tuesday - Thursday 73°C.
Coldest day: Saturday 59°C.

Chance of precipitation

Highest chance: Friday 34%.

Long-term weather forecast

  • Sunday
  • Oct 18, 2026
  • 72°F
  • 37°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 11mphNNE 13°
  • Humidity: 36%
  • UV index: 4
  • Sunrise: 7:15 am MDT
  • Sunset: 6:12 pm MDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 66°F
  • 37°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 12mphESE 119°
  • Humidity: 53%
  • UV index: 4
  • Sunrise: 7:16 am MDT
  • Sunset: 6:10 pm MDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 73°F
  • 43°F
Sunny
Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 6mphSE 135°
  • Humidity: 51%
  • UV index: 4
  • Sunrise: 7:17 am MDT
  • Sunset: 6:09 pm MDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 73°F
  • 45°F
Sunny
Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 9mphSE 136°
  • Humidity: 51%
  • UV index: 4
  • Sunrise: 7:19 am MDT
  • Sunset: 6:07 pm MDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 73°F
  • 50°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 9mphSE 130°
  • Humidity: 56%
  • UV index: 4
  • Sunrise: 7:20 am MDT
  • Sunset: 6:06 pm MDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 72°F
  • 43°F
PM Showers
PM Showers
  • Precip. probability: 34%
  • Precipitation: 0"
  • Wind: 13mphWSW 240°
  • Humidity: 51%
  • UV index: 3
  • Sunrise: 7:21 am MDT
  • Sunset: 6:04 pm MDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 59°F
  • 36°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 14%
  • Precipitation: 0.08"
  • Wind: 11mphNNW 327°
  • Humidity: 51%
  • UV index: 3
  • Sunrise: 7:22 am MDT
  • Sunset: 6:03 pm MDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 64°F
  • 39°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 11mphSE 137°
  • Humidity: 61%
  • UV index: 3
  • Sunrise: 7:23 am MDT
  • Sunset: 6:02 pm MDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 64°F
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 10mphSE 130°
  • Humidity: 60%
  • UV index: 3
  • Sunrise: 7:25 am MDT
  • Sunset: 6:00 pm MDT
  • ▼
  • Tuesday
  • Oct 27, 2026
  • 63°F
  • 39°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 11%
  • Precipitation: 0"
  • Wind: 11mphSW 217°
  • Humidity: 49%
  • UV index: 3
  • Sunrise: 7:26 am MDT
  • Sunset: 5:59 pm MDT
  • ▼
sun-filled, gloomy and rain-soaked weather is forecasted.
With a 14% probability, rainfall is expected only on Saturday. The precipitation will be minimal at 0.08".
There will be a considerable variation in temperature in the upcoming period. Highs will range from 59°F to 73.4°F, while the lowest nightly temperature differences will be also quite pronounced, as temperatures overnight will fluctuate from 35.6°F up to 50°F.
The warmest days in Guernsey will be Tuesday through Thursday, with a maximum of 73.4°F; expect the coldest day on Saturday with a high of 59°F.
Updated: Oct 18, 2026 @ 08:41:14 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Today, expect plenty of sunshine and only a few scattered clouds.

Today, the highest temperature will be 71.6°F, while the lowest temperature will be 37.4°F.
The maximum temperature will be notably higher than the average highest temperature of 59.4°F in October. Today, the lowest temperature will be in line with the average low temperature.

On Sunday, in Guernsey, sunrise will be at 7:15 am and sunset at 6:12 pm (MDT).

In Guernsey, the length of the day today will be 10h and 57min.