Weather forecast for tomorrowEast Helena, MT

Weather forecast for tomorrow

Sunday Oct 18, 2026

  • 63°F
  • 37°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 5mphNNE 32°
  • Humidity: 56%
  • UV index: 3
  • Sunrise: 7:49 am MDT
  • Sunset: 6:35 pm MDT
  • ▼
Tomorrow, in East Helena, blue skies and warm sunshine will define the conditions.
Temperature span will be from a high of a comfortable 62.6°F to a low of a wintry 37.4°F.
The predicted high will feel warmer, consistent with September's climate average of 68.2°F.
Sunrise will be at 7:49 am and sunset at 6:35 pm; tomorrow's daylight will last for 10h and 46min.

Hourly overview

Hourly temperatures

Warmest period: 3 pm - 6 pm 59°C.
Coldest period: 6 am - 9 am 43°C.

Chance of precipitation

Highest chance: 6 am - 9 am 4%.

Hourly weather forecast

  • 12 am
  • 50°F
  • Feels like:
    48°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphSW 236°
  • Humidity: 53%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 46°F
  • Feels like:
    46°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 3mphWSW 243°
  • Humidity: 60%
  • Pressure: 30.03"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 45°F
  • Feels like:
    45°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 2mphWSW 246°
  • Humidity: 64%
  • Pressure: 30.09"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 43°F
  • Feels like:
    43°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 2mphWSW 240°
  • Humidity: 70%
  • Pressure: 30.09"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:49 am
  • 8 am
  • 41°F
  • Feels like:
    41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 2mphWSW 245°
  • Humidity: 78%
  • Pressure: 30.12"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 46°F
  • Feels like:
    46°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 1mphWNW 291°
  • Humidity: 69%
  • Pressure: 30.12"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 12 pm
  • 52°F
  • Feels like:
    52°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 2mphN 10°
  • Humidity: 54%
  • Pressure: 30.09"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 2 pm
  • 57°F
  • Feels like:
    57°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphENE 64°
  • Humidity: 48%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 4 pm
  • 61°F
  • Feels like:
    61°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 5mphE 87°
  • Humidity: 41%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 59°F
  • Feels like:
    59°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 4mphSSE 148°
  • Humidity: 46%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:35 pm
  • 8 pm
  • 52°F
  • Feels like:
    52°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 4mphWSW 243°
  • Humidity: 55%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 48°F
  • Feels like:
    48°F
Clear
Clear
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 2mphSW 230°
  • Humidity: 63%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, on Sunday, primarily cloud-filled and occasionally mostly clear weather is forecasted.
The temperature will be between the lowest temperature of 41°F and the highest temperature of 60.8°F. The warmest part of the day will be at 4 pm and 5 pm.
The highest temperature tomorrow will resemble September's average maximum of 68.2°F more than October's average. The lowest temperature is expected to be a couple of degrees higher than the average minimum in October, typically 32.7°F.
Updated: Oct 17, 2026 @ 13:54:36 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, clear skies with only minor cloud interruptions are in the outlook.

Tomorrow, the maximum temperature will be 62.6°F, while the minimum temperature will be 37.4°F.
The maximum temperature tomorrow will be significantly higher than the average highest temperature of 51.3°F in October. The lowest temperature will be slightly warmer than the average low of 32.7°F.

On Sunday, in East Helena, sunrise will be at 7:49 am and sunset at 6:35 pm (MDT).

In East Helena, tomorrow, there will be 10h and 46min of daylight.