Weather forecast for tomorrowGeyser, MT

Weather forecast for tomorrow

Monday Oct 19, 2026

  • 70°F
  • 43°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 7mphSW 219°
  • Humidity: 40%
  • UV index: 3
  • Sunrise: 7:46 am MDT
  • Sunset: 6:27 pm MDT
  • ▼
Tomorrow, in Geyser, sunshine will dominate, with only occasional cloud cover.
Significant variations in temperature are predicted, peaking at a pleasant 69.8°F and dropping to a low of a brisk 42.8°F.
The predicted high will feel warmer, consistent with September's climate average of 62.8°F.
Sunrise will be at 7:46 am and sunset at 6:27 pm; tomorrow's daylight will last for 10h and 41min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 68°C.
Coldest period: 3 am - 6 am 41°C.

Chance of precipitation

Highest chance: 12 am 4%.

Hourly weather forecast

  • 12 am
  • 43°F
  • Feels like:
    41°F
Clear
Clear
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 3mphS 185°
  • Humidity: 63%
  • Pressure: 30.06"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 41°F
  • Feels like:
    37°F
Clear
Clear
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 4mphWSW 238°
  • Humidity: 66%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 41°F
  • Feels like:
    37°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 4mphWSW 243°
  • Humidity: 65%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 41°F
  • Feels like:
    37°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 4mphWSW 249°
  • Humidity: 62%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:46 am
  • 8 am
  • 41°F
  • Feels like:
    37°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 4mphWSW 241°
  • Humidity: 63%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 52°F
  • Feels like:
    52°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 5mphWSW 251°
  • Humidity: 46%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 12 pm
  • 63°F
  • Feels like:
    63°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphWSW 242°
  • Humidity: 33%
  • Pressure: 29.85"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 2 pm
  • 68°F
  • Feels like:
    68°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphSW 222°
  • Humidity: 28%
  • Pressure: 29.8"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 4 pm
  • 68°F
  • Feels like:
    68°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphSE 126°
  • Humidity: 28%
  • Pressure: 29.8"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 61°F
  • Feels like:
    61°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 6mphESE 113°
  • Humidity: 35%
  • Pressure: 29.83"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:27 pm
  • 8 pm
  • 54°F
  • Feels like:
    52°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 4mphS 181°
  • Humidity: 44%
  • Pressure: 29.85"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 50°F
  • Feels like:
    48°F
Mostly Clear
Mostly Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 5mphSW 228°
  • Humidity: 47%
  • Pressure: 29.85"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, a combination of dry and sunny and gloomy weather is expected.
The temperature will be between a minimum of 41°F and a maximum of 68°F. The warmest part of the day will be from 2 pm to 4 pm.
The day’s peak temperature will reflect September's norm of 62.8°F more than October's 46.4°F. The minimum temperature will be also more alike with September's average low of 41.5°F than October's typical value of 29.8°F.
Updated: Oct 18, 2026 @ 08:45:38 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Monday, a bright and mostly cloud-free sky is in store.

Tomorrow, the highest temperature will be 69.8°F, while the lowest temperature will be 42.8°F.
The maximum temperature will be significantly higher than the average highest temperature of 46.4°F in October. The lowest temperature will be also notably higher than the average low of 29.8°F.

On Monday, in Geyser, sunrise will be at 7:46 am and sunset at 6:27 pm (MDT).

In Geyser, tomorrow, there will be 10h and 41min of daylight.