Weather forecast for 10 daysEast Helena, MT

Weather forecast for the weekend

Saturday Oct 17, 2026

  • 70°F
  • 39°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 9mphSSE 167°
  • Humidity: 51%
  • UV index: 3
  • Sunrise: 7:48 am MDT
  • Sunset: 6:37 pm MDT
  • ▼
Today, on Saturday, October 17, patchy clouds will move across the sky, allowing for sunshine at times.
Temperature values will vary noticeably, extending from a delightful 69.8°F to a wintry 39.2°F.
Today, the forecasted high will be higher and much closer to September's average high of 68.2°F than October's 51.3°F.
Sunrise was at 7:48 am and sunset will be at 6:37 pm; the daylight will last for 10h and 49min.

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.

10-day overview

Daily temperatures

Warmest day: today 70°C.
Coldest period: Sunday - Monday 46°C.

Chance of precipitation

Highest chance: Friday 46%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • 70°F
  • 39°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 9mphSSE 167°
  • Humidity: 51%
  • UV index: 3
  • Sunrise: 7:48 am MDT
  • Sunset: 6:37 pm MDT
  • ▼
  • 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
  • ▼
  • Monday
  • Oct 19, 2026
  • 68°F
  • 39°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 7mphSE 141°
  • Humidity: 55%
  • UV index: 3
  • Sunrise: 7:51 am MDT
  • Sunset: 6:33 pm MDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 63°F
  • 37°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 6mphNW 314°
  • Humidity: 57%
  • UV index: 3
  • Sunrise: 7:52 am MDT
  • Sunset: 6:32 pm MDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 66°F
  • 41°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 7mphS 170°
  • Humidity: 60%
  • UV index: 3
  • Sunrise: 7:54 am MDT
  • Sunset: 6:30 pm MDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 66°F
  • 45°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 5%
  • Precipitation: 0.04"
  • Wind: 7mphS 187°
  • Humidity: 63%
  • UV index: 3
  • Sunrise: 7:55 am MDT
  • Sunset: 6:28 pm MDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 54°F
  • 32°F
Showers
Showers
  • Precip. probability: 46%
  • Precipitation: 0.16"
  • Wind: 11mphWNW 285°
  • Humidity: 75%
  • UV index: 2
  • Sunrise: 7:56 am MDT
  • Sunset: 6:26 pm MDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 48°F
  • 30°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 17%
  • Precipitation: 0.16"
  • Wind: 6mphNW 314°
  • Humidity: 67%
  • UV index: 3
  • Sunrise: 7:58 am MDT
  • Sunset: 6:25 pm MDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 46°F
  • 30°F
AM Snow Showers
AM Snow Showers
  • Precip. probability: 37%
  • Precipitation: 0.08"
  • Wind: 8mphNW 314°
  • Humidity: 72%
  • UV index: 2
  • Sunrise: 7:59 am MDT
  • Sunset: 6:23 pm MDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 46°F
  • 30°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 7mphW 265°
  • Humidity: 69%
  • UV index: 2
  • Sunrise: 8:01 am MDT
  • Sunset: 6:21 pm MDT
  • ▼
Over the course of the next ten days, expect shifting weather, and a mix of cloudy, bright, wet and snowy weather is forecasted.
With light precipitation of 0.16", rainfall is anticipated on Friday and next Saturday.
With a 37% probability, snowfall is expected only on next Sunday. The precipitation will be light at 0.16".
Temperature fluctuation will be noticeable in the next ten days. Highs will range from 46.4°F to 69.8°F, while the fluctuation in night temperatures will be also significant, as the minimum temperature is expected to range between 30.2°F and 44.6°F.
With a high of 69.8°F, today is the warmest day; with a maximum temperature of 46.4°F, next Sunday and Monday will be the coldest days in East Helena.
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

Today, occasional cloudiness will be present, but there will still be plenty of sun.

Today, the maximum temperature will be 69.8°F, while the minimum temperature will be 39.2°F.
The highest temperature today will be uncommonly higher than the average maximum of 51.3°F in October. The lowest temperature today will be relatively higher than the average low temperature.

On Saturday, in East Helena, sunrise was at 7:48 am and sunset will be at 6:37 pm (MDT).

Today, the daylight will last for 10h and 49min.

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.