Weather forecast for 10 daysRiverton, WY

Weather forecast for the weekend

Saturday Oct 17, 2026

  • 68°F
  • 37°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 5mphENE 76°
  • Humidity: 45%
  • UV index: 4
  • Sunrise: 7:29 am MDT
  • Sunset: 6:27 pm MDT
  • ▼
On Saturday, in Riverton, sunny skies are in store, with excellent visibility.
A daytime temperature reaching up to a delightful 68°F will sharply contrast with a nighttime low of an icy 37.4°F.
Today, weather will feel warmer as the high trends toward September's average of 75.6°F.
Sunrise was at 7:29 am and sunset will be at 6:27 pm; the daylight will last for 10h and 58min.

Sunday Oct 18, 2026

  • 64°F
  • 36°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 6mphNNE 22°
  • Humidity: 46%
  • UV index: 4
  • Sunrise: 7:31 am MDT
  • Sunset: 6:26 pm MDT
  • ▼
Tomorrow, on Sunday, the outlook remains bright and sunny.
A wide temperature range is predicted, from a high of a breezy 64.4°F to a low of a wintry 35.6°F.
Tomorrow, the expected high will be moderately higher than the average October maximum of 57.7°F.
Sunrise will be at 7:31 am and sunset at 6:26 pm; tomorrow's daylight will last for 10h and 55min.

10-day overview

Daily temperatures

Warmest day: today 68°C.
Coldest day: Saturday 24.10. 54°C.

Chance of precipitation

Highest chance: Monday 26.10. 17%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • 68°F
  • 37°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 5mphENE 76°
  • Humidity: 45%
  • UV index: 4
  • Sunrise: 7:29 am MDT
  • Sunset: 6:27 pm MDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 64°F
  • 36°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 6mphNNE 22°
  • Humidity: 46%
  • UV index: 4
  • Sunrise: 7:31 am MDT
  • Sunset: 6:26 pm MDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 66°F
  • 39°F
Sunny
Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 6mphNNE 33°
  • Humidity: 53%
  • UV index: 4
  • Sunrise: 7:32 am MDT
  • Sunset: 6:24 pm MDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 66°F
  • 41°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 6mphNE 37°
  • Humidity: 55%
  • UV index: 4
  • Sunrise: 7:33 am MDT
  • Sunset: 6:23 pm MDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 66°F
  • 43°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 7mphENE 59°
  • Humidity: 59%
  • UV index: 3
  • Sunrise: 7:34 am MDT
  • Sunset: 6:21 pm MDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 66°F
  • 50°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 10mphS 188°
  • Humidity: 62%
  • UV index: 3
  • Sunrise: 7:35 am MDT
  • Sunset: 6:19 pm MDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 63°F
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 14%
  • Precipitation: 0"
  • Wind: 14mphSSW 208°
  • Humidity: 56%
  • UV index: 3
  • Sunrise: 7:37 am MDT
  • Sunset: 6:18 pm MDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 54°F
  • 39°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 16%
  • Precipitation: 0"
  • Wind: 9mphNE 53°
  • Humidity: 57%
  • UV index: 3
  • Sunrise: 7:38 am MDT
  • Sunset: 6:16 pm MDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 57°F
  • 37°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 9mphS 189°
  • Humidity: 58%
  • UV index: 3
  • Sunrise: 7:39 am MDT
  • Sunset: 6:15 pm MDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 57°F
  • 39°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 17%
  • Precipitation: 0"
  • Wind: 7mphNW 316°
  • Humidity: 60%
  • UV index: 3
  • Sunrise: 7:40 am MDT
  • Sunset: 6:13 pm MDT
  • ▼
In the days ahead, a combination of mostly clear and dull weather is predicted.
Rainfall is not expected in Riverton in the upcoming days.
Substantial differences in temperature are forecasted over the next several days. Forecast highs will fluctuate between 53.6°F and 68°F, while the lowest night temperatures will vary also significantly, as the lowest temperatures will be recorded between 35.6°F and 50°F.
With a high of 68°F, today is the warmest day; with the highest temperature of 53.6°F, next Saturday will be the coldest day.
Updated: Oct 17, 2026 @ 16:48:43 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Today, in Riverton, sunny conditions are expected to continue.

Today, the highest temperature will be 68°F, while the lowest temperature will be 37.4°F.
Today, the maximum temperature will be noticeably higher than the average highest temperature of 57.7°F in October. The lowest temperature will be in line with the average low of 38.3°F.

On Saturday, in Riverton, sunrise was at 7:29 am and sunset will be at 6:27 pm (MDT).

In Riverton, the length of the day today will be 10h and 58min.

Tomorrow, sunshine will likely continue with scattered clouds at most.

Tomorrow, the highest temperature will be 64.4°F, while the lowest temperature will be 35.6°F.
Tomorrow, the highest temperature will be moderately higher than the average maximum temperature in October. The lowest temperature tomorrow will be in line with the average low temperature.

On Sunday, in Riverton, sunrise will be at 7:31 am and sunset at 6:26 pm (MDT).

In Riverton, the length of the day tomorrow will be 10h and 55min.