Weather forecast for todayBig Arm, MT

Weather forecast for today

Current condition 12:34 am MST

  • 39°F
  • Feels like:
    37°F
Partly Cloudy
Partly Cloudy
  • Precipitation: 0"
  • Wind: 4mphNNW 340°
  • Humidity: 83%
  • Dewpoint: 36°F
  • Pressure: 30.19"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
In Big Arm, currently, the sky is partially covered with clouds, offering glimpses of blue.
The temperature is a wintry 39.2°F, while the felt air temperature is a similar 37.4°F. The current temperature is relatively far from the maximum of 51.8°F anticipated for today.

Sunday Oct 25, 2026

  • 52°F
  • 32°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 8mphNNE 23°
  • Humidity: 69%
  • UV index: 2
  • Sunrise: 8:11 am MDT
  • Sunset: 6:30 pm MDT
  • ▼
Today, in Big Arm, some passing clouds may drift through, but the sun will shine at times.
The temperature is expected to vary between a maximum of a fresh 51.8°F and a minimum of a cold 32°F.
The anticipated temperature peak will correspond with October's average maximum of 51.1°F.
Sunrise will be at 8:11 am and sunset at 6:30 pm; the daylight will last for 10h and 19min.

Hourly overview

Hourly temperatures

Warmest hour: 5 pm 50°C.
Coldest hour: 8 am 32°C.

Chance of precipitation

Highest chance: 2%.

Hourly weather forecast

  • 2 am
  • 39°F
  • Feels like:
    36°F
Mostly Clear
Mostly Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 4mphNNW 345°
  • Humidity: 84%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 36°F
  • Feels like:
    32°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 5mphN 4°
  • Humidity: 87%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 34°F
  • Feels like:
    27°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 6mphN 11°
  • Humidity: 92%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 8 am
  • 32°F
  • Feels like:
    25°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 6mphN 5°
  • Humidity: 93%
  • Pressure: 30.27"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 8:11 am
  • 10 am
  • 37°F
  • Feels like:
    30°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 7mphNNE 12°
  • Humidity: 84%
  • Pressure: 30.3"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 12 pm
  • 43°F
  • Feels like:
    37°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphNNE 29°
  • Humidity: 67%
  • Pressure: 30.27"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 2 pm
  • 46°F
  • Feels like:
    43°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphNE 34°
  • Humidity: 58%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 4 pm
  • 50°F
  • Feels like:
    46°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphNE 37°
  • Humidity: 51%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 48°F
  • Feels like:
    46°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 5mphNNE 29°
  • Humidity: 54%
  • Pressure: 30.12"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:30 pm
  • 8 pm
  • 41°F
  • Feels like:
    37°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 5mphN 5°
  • Humidity: 75%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 37°F
  • Feels like:
    34°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 6mphN 358°
  • Humidity: 81%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Today, in Big Arm, gray skies are likely.
The temperature will vary between the lowest temperature of 32°F and the highest temperature of 50°F. The feels-like temperature will vary between a maximum of 48.2°F and a minimum of 24.8°F. The warmest part of the day will be at 4 pm and 5 pm.
Today, the high temperature will be consistent with October's average. The lowest temperature today will be also in line with October's average minimum.
Updated: Oct 25, 2026 @ 07:34:44 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Currently (12:34 am MST) it is 39.2°F in Big Arm.

On Sunday, sunny moments will alternate with patchy cloud cover.

Today, the highest temperature will be 51.8°F, while the lowest temperature will be 32°F.
The highest temperature will be in line with the average maximum of 51.1°F in October. Today, the lowest temperature will be also in line with the average low temperature.

On Sunday, in Big Arm, sunrise will be at 8:11 am and sunset at 6:30 pm (MDT).

In Big Arm, today, there will be 10h and 19min of daylight.