Weather forecast for tomorrowRiverton, UT

Weather forecast for tomorrow

Sunday Oct 18, 2026

  • 68°F
  • 48°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 10mphS 171°
  • Humidity: 41%
  • UV index: 4
  • Sunrise: 7:42 am MDT
  • Sunset: 6:43 pm MDT
  • ▼
On Sunday, October 18, variable cloud cover will persist, but sunshine will break through.
Temperatures will oscillate between a delightful 68°F at their highest and a brisk 48.2°F at their lowest.
Tomorrow, the maximum temperature will be higher and more reflective of September's average high of 74.3°F than October's of 57.6°F.
Sunrise will be at 7:42 am and sunset at 6:43 pm; tomorrow's daylight will last for 11h and 1min.

Hourly overview

Hourly temperatures

Warmest period: 3 pm - 6 pm 66°C.
Coldest period: 3 am - 6 am 48°C.

Chance of precipitation

Highest chance: 6 am 1%.

Hourly weather forecast

  • 12 am
  • 50°F
  • Feels like:
    48°F
Mostly Clear
Mostly Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 5mphS 173°
  • Humidity: 47%
  • Pressure: 30.06"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 48°F
  • Feels like:
    45°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 5mphS 175°
  • Humidity: 51%
  • Pressure: 30.06"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 48°F
  • Feels like:
    45°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphS 176°
  • Humidity: 52%
  • Pressure: 30.06"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 48°F
  • Feels like:
    45°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 6mphS 172°
  • Humidity: 55%
  • Pressure: 30.06"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:42 am
  • 8 am
  • 46°F
  • Feels like:
    43°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 7mphS 176°
  • Humidity: 58%
  • Pressure: 30.06"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 57°F
  • Feels like:
    54°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphSSE 166°
  • Humidity: 47%
  • Pressure: 30.06"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 12 pm
  • 63°F
  • Feels like:
    61°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 10mphSSE 165°
  • Humidity: 38%
  • Pressure: 30.03"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 2 pm
  • 66°F
  • Feels like:
    66°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphSSE 168°
  • Humidity: 32%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 4 pm
  • 68°F
  • Feels like:
    68°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphS 172°
  • Humidity: 30%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 6 pm
  • 66°F
  • Feels like:
    66°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphS 180°
  • Humidity: 35%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:43 pm
  • 8 pm
  • 57°F
  • Feels like:
    57°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphSSW 203°
  • Humidity: 49%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 54°F
  • Feels like:
    54°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphS 179°
  • Humidity: 54%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, primarily gloomy and occasionally clear weather is forecasted.
The temperature will vary between a minimum of 46.4°F and a maximum of 68°F. The warmest part of the day is anticipated around 4 pm.
Tomorrow, temperatures will be more in line with the climate of September than the usual maximum in October. Tomorrow, the forecasted low is also more alike with September's minimum of 50.5°F than the average in October.
Updated: Oct 18, 2026 @ 00:01:13 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, the sky will feature a blend of clouds and sunshine.

Tomorrow, the highest temperature will be 68°F, while the lowest temperature will be 48.2°F.
Tomorrow, the maximum temperature will be noticeably higher than the average highest temperature of 57.6°F in October. The lowest temperature tomorrow will be a few degrees higher than the average low temperature.

On Sunday, in Riverton, sunrise will be at 7:42 am and sunset at 6:43 pm (MDT).

In Riverton, tomorrow, there will be 11h and 1min of daylight.