Weather forecast for tomorrowFallon, MT

Weather forecast for tomorrow

Sunday Oct 18, 2026

  • 64°F
  • 39°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 8mphNNE 19°
  • Humidity: 44%
  • UV index: 3
  • Sunrise: 7:23 am MDT
  • Sunset: 6:08 pm MDT
  • ▼
Tomorrow, on Sunday, October 18, a partly cloudy sky is also anticipated.
Predicted temperature values will span from an enjoyable 64.4°F down to a wintry 39.2°F.
The temperature of 64.4°F aligns more with what is typical in September than what is normal in October.
Sunrise will be at 7:23 am and sunset at 6:08 pm; tomorrow's daylight will last for 10h and 45min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 63°C.
Coldest hour: 6 am 45°C.

Chance of precipitation

Highest chance: 12 am - 6 am 2%.

Hourly weather forecast

  • 12 am
  • 52°F
  • Feels like:
    48°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 7mphW 264°
  • Humidity: 58%
  • Pressure: 29.88"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 48°F
  • Feels like:
    45°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 7mphW 281°
  • Humidity: 60%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 46°F
  • Feels like:
    43°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 7mphWNW 300°
  • Humidity: 64%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 45°F
  • Feels like:
    41°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 6mphNW 306°
  • Humidity: 68%
  • Pressure: 30.06"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:23 am
  • 8 am
  • 43°F
  • Feels like:
    39°F
Sunny
Sunny
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 5mphWNW 301°
  • Humidity: 72%
  • Pressure: 30.12"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 54°F
  • Feels like:
    52°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphN 8°
  • Humidity: 53%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 12 pm
  • 61°F
  • Feels like:
    59°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphNE 44°
  • Humidity: 34%
  • Pressure: 30.12"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 2 pm
  • 63°F
  • Feels like:
    63°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphNNE 29°
  • Humidity: 31%
  • Pressure: 30.12"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 4 pm
  • 63°F
  • Feels like:
    63°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphNE 47°
  • Humidity: 30%
  • Pressure: 30.09"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 57°F
  • Feels like:
    55°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphENE 57°
  • Humidity: 37%
  • Pressure: 30.12"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:08 pm
  • 8 pm
  • 50°F
  • Feels like:
    46°F
Mostly Clear
Mostly Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphENE 67°
  • Humidity: 47%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 46°F
  • Feels like:
    43°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphENE 77°
  • Humidity: 54%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, a combination of overcast and dry and sunny weather is predicted.
The temperature will be between a minimum of 42.8°F and a maximum of 62.6°F. The warmest part of the day will be from 1 pm to 4 pm.
The maximum temperature tomorrow will be more consistent with September's average high of 73°F than October's typical of 54.7°F. Tomorrow, the temperature will drop to a level alike with October's average minimum of 40.1°F.
Updated: Oct 17, 2026 @ 22:08:45 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, clouds and sunshine will alternate throughout the day.

Tomorrow, the highest temperature will be 64.4°F, while the lowest temperature will be 39.2°F.
The maximum temperature tomorrow will be uncommonly higher than the average highest temperature of 54.7°F in October. Tomorrow, the lowest temperature will be in line with the average low temperature.

On Sunday, in Fallon, sunrise will be at 7:23 am and sunset at 6:08 pm (MDT).

In Fallon, the length of the day tomorrow will be 10h and 45min.