Weather forecast for tomorrowSaint John, UT

Weather forecast for tomorrow

Sunday Oct 18, 2026

  • 68°F
  • 43°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 8mphSSE 158°
  • Humidity: 38%
  • UV index: 4
  • Sunrise: 7:44 am MDT
  • Sunset: 6:45 pm MDT
  • ▼
On Sunday, October 18, sun and clouds will share the sky, creating a partly cloudy day.
Temperatures are anticipated to peak at a pleasant 68°F and drop to a minimum of a chilly 42.8°F.
The warmer conditions bring a maximum of 68°F, more representative of September than October.
Sunrise will be at 7:44 am and sunset at 6:45 pm; tomorrow's daylight will last for 11h and 1min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 66°C.
Coldest hour: 6 am 43°C.

Chance of precipitation

Highest chance: 1%.

Hourly weather forecast

  • 12 am
  • 46°F
  • Feels like:
    43°F
Mostly Clear
Mostly Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 6mphS 189°
  • Humidity: 50%
  • Pressure: 30.06"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 45°F
  • Feels like:
    43°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 6mphS 183°
  • Humidity: 50%
  • Pressure: 30.06"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 45°F
  • Feels like:
    41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 6mphS 188°
  • Humidity: 50%
  • Pressure: 30.06"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 43°F
  • Feels like:
    41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 5mphS 183°
  • Humidity: 52%
  • Pressure: 30.06"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:44 am
  • 8 am
  • 41°F
  • Feels like:
    37°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 6mphS 182°
  • Humidity: 56%
  • Pressure: 30.09"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 54°F
  • Feels like:
    52°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphSSE 160°
  • Humidity: 41%
  • Pressure: 30.09"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 12 pm
  • 61°F
  • Feels like:
    61°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphSSE 163°
  • Humidity: 34%
  • Pressure: 30.03"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 2 pm
  • 64°F
  • Feels like:
    64°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphSSE 159°
  • Humidity: 30%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 4 pm
  • 66°F
  • Feels like:
    66°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphSSE 150°
  • Humidity: 29%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 6 pm
  • 64°F
  • Feels like:
    64°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphESE 117°
  • Humidity: 35%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:45 pm
  • 8 pm
  • 55°F
  • Feels like:
    55°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 4mphSSW 206°
  • Humidity: 47%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 50°F
  • Feels like:
    50°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 5mphS 189°
  • Humidity: 53%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, primarily cloudy and occasionally sun-filled weather is expected.
The temperature will vary between the lowest temperature of 41°F and the highest temperature of 66.2°F. The warmest part of the day will be from 3 pm to 5 pm.
Tomorrow, the temperature will be closer to September's norm than to October's average of 57.7°F. The minimum temperature will be alike with October's average low of 40.6°F.
Updated: Oct 17, 2026 @ 17:14:17 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Tomorrow, intermittent cloud cover is expected, allowing for some sunshine.

Tomorrow, the maximum temperature will be 68°F, while the minimum temperature will be 42.8°F.
Tomorrow, the maximum temperature will be significantly higher than the average highest temperature of 57.7°F in October. The lowest temperature will be in line with the average low of 40.6°F.

On Sunday, in Saint John, sunrise will be at 7:44 am and sunset at 6:45 pm (MDT).

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