Weather forecast for tomorrowSphinx, MT

Weather forecast for tomorrow

Sunday Oct 18, 2026

  • 64°F
  • 32°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 7mphSSW 195°
  • Humidity: 46%
  • UV index: 3
  • Sunrise: 7:43 am MDT
  • Sunset: 6:33 pm MDT
  • ▼
Tomorrow, on Sunday, October 18, a glowing sky and minimal clouds are expected.
A wide temperature range is predicted, from a high of an enjoyable 64.4°F to a low of a wintry 32°F.
Tomorrow, meteorological data suggests the high will feel more like September, based on a forecast of 64.4°F.
Sunrise will be at 7:43 am and sunset at 6:33 pm; tomorrow's daylight will last for 10h and 50min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 63°C.
Coldest hour: 6 am 36°C.

Chance of precipitation

Highest chance: 3 am - 6 am 2%.

Hourly weather forecast

  • 12 am
  • 43°F
  • Feels like:
    37°F
Mostly Clear
Mostly Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 9mphS 178°
  • Humidity: 58%
  • Pressure: 30.09"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 39°F
  • Feels like:
    34°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 7mphS 184°
  • Humidity: 65%
  • Pressure: 30.09"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 37°F
  • Feels like:
    32°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 7mphSSW 197°
  • Humidity: 71%
  • Pressure: 30.12"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 36°F
  • Feels like:
    30°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 6mphSSW 206°
  • Humidity: 75%
  • Pressure: 30.12"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:43 am
  • 8 am
  • 34°F
  • Feels like:
    30°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 6mphSSW 211°
  • Humidity: 77%
  • Pressure: 30.12"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 45°F
  • Feels like:
    43°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphS 184°
  • Humidity: 60%
  • Pressure: 30.12"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 12 pm
  • 55°F
  • Feels like:
    54°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 5mphS 172°
  • Humidity: 40%
  • Pressure: 30.03"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 2 pm
  • 61°F
  • Feels like:
    61°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphS 183°
  • Humidity: 29%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 4 pm
  • 63°F
  • Feels like:
    63°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphSSW 204°
  • Humidity: 25%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 59°F
  • Feels like:
    57°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphSW 222°
  • Humidity: 33%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:33 pm
  • 8 pm
  • 48°F
  • Feels like:
    46°F
Mostly Clear
Mostly Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphSSW 202°
  • Humidity: 49%
  • Pressure: 30.03"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 43°F
  • Feels like:
    39°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 5mphSSW 197°
  • Humidity: 57%
  • Pressure: 30.03"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, on Sunday, a combination of overcast and dry and sunny weather is predicted.
The temperature will vary between the lowest temperature of 33.8°F and the highest temperature of 62.6°F. The warmest part of the day will be from 3 pm to 5 pm.
The temperature tomorrow will feel more in line with September's average high of 63.5°F than the usual for October. The lowest temperature is expected to be relatively higher than the average minimum in October, typically 27.5°F.
Updated: Oct 17, 2026 @ 19:25:57 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, sunny intervals will be long-lasting, with few disruptions.

Tomorrow, the maximum temperature will be 64.4°F, while the minimum temperature will be 32°F.
Tomorrow, the highest temperature will be uncommonly higher than the average maximum of 45.5°F in October. The lowest temperature will be a couple of degrees higher than the average low of 27.5°F.

On Sunday, in Sphinx, sunrise will be at 7:43 am and sunset at 6:33 pm (MDT).

In Sphinx, tomorrow, there will be 10h and 50min of daylight.