Weather forecast for 10 daysArminto, WY

Weather forecast for the weekend

Saturday Oct 17, 2026

  • 66°F
  • 39°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 17mphWSW 249°
  • Humidity: 34%
  • UV index: 4
  • Sunrise: 7:25 am MDT
  • Sunset: 6:23 pm MDT
  • ▼
On Saturday, in Arminto, expect consistent sunshine and open skies.
Temperature changes will be remarkable, ranging from a high of an enjoyable 66.2°F to a low of a cold 39.2°F.
A forecast high of 66.2°F brings conditions more familiar to September's average than October's.
Sunrise was at 7:25 am and sunset will be at 6:23 pm; the daylight will last for 10h and 58min.

Sunday Oct 18, 2026

  • 61°F
  • 37°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 11mphENE 68°
  • Humidity: 41%
  • UV index: 4
  • Sunrise: 7:26 am MDT
  • Sunset: 6:21 pm MDT
  • ▼
Tomorrow, on Sunday, October 18, a pleasant, mostly sunny outlook is in place.
Forecasted temperature values will span from a breezy 60.8°F down to an icy 37.4°F.
Tomorrow's high is expected to be slightly warmer than the average high in October of 54.9°F.
Sunrise will be at 7:26 am and sunset at 6:21 pm; tomorrow's daylight will last for 10h and 55min.

10-day overview

Daily temperatures

Maximum temperature: 66°C.
Coldest day: Saturday 24.10. 48°C.

Chance of precipitation

Highest chance: Saturday 24.10. 48%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • 66°F
  • 39°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 17mphWSW 249°
  • Humidity: 34%
  • UV index: 4
  • Sunrise: 7:25 am MDT
  • Sunset: 6:23 pm MDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 61°F
  • 37°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 11mphENE 68°
  • Humidity: 41%
  • UV index: 4
  • Sunrise: 7:26 am MDT
  • Sunset: 6:21 pm MDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 64°F
  • 43°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 11mphWSW 240°
  • Humidity: 47%
  • UV index: 4
  • Sunrise: 7:27 am MDT
  • Sunset: 6:19 pm MDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 64°F
  • 41°F
Sunny
Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 11mphW 267°
  • Humidity: 52%
  • UV index: 4
  • Sunrise: 7:29 am MDT
  • Sunset: 6:18 pm MDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 64°F
  • 46°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 10mphSW 218°
  • Humidity: 53%
  • UV index: 3
  • Sunrise: 7:30 am MDT
  • Sunset: 6:16 pm MDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 66°F
  • 50°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 14mphSW 228°
  • Humidity: 59%
  • UV index: 3
  • Sunrise: 7:31 am MDT
  • Sunset: 6:15 pm MDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 59°F
  • 37°F
Partly Cloudy / Wind
Partly Cloudy / Wind
  • Precip. probability: 18%
  • Precipitation: 0.12"
  • Wind: 21mphSW 228°
  • Humidity: 59%
  • UV index: 3
  • Sunrise: 7:32 am MDT
  • Sunset: 6:13 pm MDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 48°F
  • 36°F
AM Rain / Snow Showers
AM Rain / Snow Showers
  • Precip. probability: 48%
  • Precipitation: 0.08"
  • Wind: 12mphSW 236°
  • Humidity: 66%
  • UV index: 3
  • Sunrise: 7:34 am MDT
  • Sunset: 6:12 pm MDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 54°F
  • 37°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 14mphSW 216°
  • Humidity: 60%
  • UV index: 3
  • Sunrise: 7:35 am MDT
  • Sunset: 6:10 pm MDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 55°F
  • 37°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 13mphSW 230°
  • Humidity: 57%
  • UV index: 3
  • Sunrise: 7:36 am MDT
  • Sunset: 6:09 pm MDT
  • ▼
Looking ahead, conditions suggest a period of sun-filled, cloudy and snow-covered weather is expected.
With a probability of 18%, rainfall is expected only on Friday. Forecasted precipitation will be minimal at 0.12".
With a 48% probability, snowfall is anticipated only on next Saturday. Predicted precipitation will be light at 0.12".
Noticeable swings in temperature are expected in the next ten days. Highs will range from 48.2°F to 66.2°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 Arminto will be Saturday and Thursday, with a maximum of 66.2°F; next Saturday will be the coldest day, with the highest temperature of 48.2°F.
Updated: Oct 17, 2026 @ 16:39:51 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Saturday, in Arminto, expect sunny weather with a crisp, clear sky.

Today, the maximum temperature will be 66.2°F, while the minimum temperature will be 39.2°F.
Today, the highest temperature will be significantly higher than the average maximum of 54.9°F in October. Today, the lowest temperature will be in line with the average low temperature.

On Saturday, in Arminto, sunrise was at 7:25 am and sunset will be at 6:23 pm (MDT).

Today, the daylight will last for 10h and 58min.

On Sunday, mostly sunny weather is likely, with high visibility.

Tomorrow, the maximum temperature in Arminto will be 60.8°F, while the minimum temperature will be 37.4°F.
Tomorrow, the maximum temperature will be relatively higher than the average highest temperature in October. The lowest temperature tomorrow will be in line with the average low temperature.

On Sunday, in Arminto, sunrise will be at 7:26 am and sunset at 6:21 pm (MDT).

Tomorrow, the daylight will last for 10h and 55min.