Weather forecast for 10 daysBig Water, UT

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 66°F
  • 50°F
AM Clouds / PM Sun
AM Clouds / PM Sun
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 7mphESE 115°
  • Humidity: 50%
  • UV index: 4
  • Sunrise: 7:37 am MDT
  • Sunset: 6:45 pm MDT
  • ▼
On Sunday, October 18, the day will start gloomy and cloudy, but expect a transition to sunny conditions later on.
Rain is not forecasted for tomorrow. Temperature span will be from a high of a comfortable 66.2°F to a low of a cool 50°F.
Tomorrow's temperature is expected to match October's standard peak of 68.5°F.
Sunrise will be at 7:37 am and sunset at 6:45 pm; tomorrow's daylight will last for 11h and 8min.

10-day overview

Daily temperatures

Warmest day: Tuesday 72°C.
Coldest period: Friday - Saturday 61°C.

Chance of precipitation

Highest chance: Thursday 64%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • min.
  • 50°F
Showers
Showers
  • Precip. probability: 42%
  • Precipitation: 0.04"
  • Wind: 4mphNW 316°
  • Humidity: 46%
  • UV index: 0
  • Sunrise: 7:36 am MDT
  • Sunset: 6:47 pm MDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 66°F
  • 50°F
AM Clouds / PM Sun
AM Clouds / PM Sun
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 7mphESE 115°
  • Humidity: 50%
  • UV index: 4
  • Sunrise: 7:37 am MDT
  • Sunset: 6:45 pm MDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 70°F
  • 50°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 7mphESE 102°
  • Humidity: 60%
  • UV index: 5
  • Sunrise: 7:38 am MDT
  • Sunset: 6:44 pm MDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 72°F
  • 54°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 7mphESE 114°
  • Humidity: 62%
  • UV index: 5
  • Sunrise: 7:39 am MDT
  • Sunset: 6:43 pm MDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 68°F
  • 55°F
Scattered Thunderstorms
Scattered Thunderstorms
  • Precip. probability: 51%
  • Precipitation: 0.2"
  • Wind: 10mphESE 105°
  • Humidity: 68%
  • UV index: 4
  • Sunrise: 7:40 am MDT
  • Sunset: 6:42 pm MDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 66°F
  • 50°F
Thunderstorms
Thunderstorms
  • Precip. probability: 64%
  • Precipitation: 0.35"
  • Wind: 9mphE 100°
  • Humidity: 78%
  • UV index: 4
  • Sunrise: 7:41 am MDT
  • Sunset: 6:40 pm MDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 61°F
  • 43°F
AM Showers
AM Showers
  • Precip. probability: 36%
  • Precipitation: 0.04"
  • Wind: 11mphW 262°
  • Humidity: 68%
  • UV index: 5
  • Sunrise: 7:42 am MDT
  • Sunset: 6:39 pm MDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 61°F
  • 45°F
Sunny
Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 7mphE 86°
  • Humidity: 64%
  • UV index: 5
  • Sunrise: 7:43 am MDT
  • Sunset: 6:38 pm MDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 63°F
  • 46°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 11%
  • Precipitation: 0"
  • Wind: 7mphE 85°
  • Humidity: 64%
  • UV index: 4
  • Sunrise: 7:44 am MDT
  • Sunset: 6:37 pm MDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 64°F
  • 46°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 7mphESE 112°
  • Humidity: 64%
  • UV index: 4
  • Sunrise: 7:45 am MDT
  • Sunset: 6:35 pm MDT
  • ▼
The next ten days will bring unstable conditions, and a mix of cloudy, wet, unstable and mostly clear weather is forecasted.
Rain is predicted for Saturday, Wednesday through Friday.
In the coming days, the highest temperature will range between 60.8°F and 71.6°F, while the nightly low temperatures will show a considerable swing, as the overnight lows will vary from 42.8°F to 55.4°F.
Tuesday is expected to be the warmest, reaching up to 71.6°F; with a maximum temperature of 60.8°F, Friday and next Saturday will be the coldest days.
Updated: Oct 18, 2026 @ 00:57:43 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, in Big Water, early cloud cover is expected, followed by a warm and sunny afternoon.

No, it will not rain tomorrow.

Tomorrow, the highest temperature will be 66.2°F, while the lowest temperature will be 50°F.
The highest temperature tomorrow will be in line with the average maximum temperature in October. Tomorrow, the lowest temperature will be also in line with the average low temperature.

On Sunday, in Big Water, sunrise will be at 7:37 am and sunset at 6:45 pm (MDT).

In Big Water, tomorrow, there will be 11h and 8min of daylight.