Weather forecast for todaySweet Grass, MT

Weather forecast for today

Current condition 9:05 am MDT

  • 59°F
  • Feels like:
    57°F
Partly Cloudy
Partly Cloudy
  • Precipitation: 0"
  • Wind: 13mphSSW 200°
  • Humidity: 26%
  • Dewpoint: 25°F
  • Pressure: 29.87"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
At the moment, in Sweet Grass, the sky is a mix of clouds and sunshine.
The temperature is a mild 59°F, the felt air temperature is nearly identical at 57.2°F. The current temperature is relatively far from the maximum of 71.6°F anticipated for today.

Saturday Oct 17, 2026

  • 72°F
  • 32°F
Partly Cloudy / Wind
Partly Cloudy / Wind
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 24mphSW 232°
  • Humidity: 24%
  • UV index: 2
  • Sunrise: 7:52 am MDT
  • Sunset: 6:34 pm MDT
  • ▼
On Saturday, in Sweet Grass, partly cloudy skies will be paired with frequent wind gusts.
Substantial temperature variations are expected, soaring to a maximum of a delightful 71.6°F and descending to a minimum of a wintry 32°F.
The forecast high of 71.6°F aligns more closely with September's typical high of 67.6°F than with October's usual 51.4°F.
Sunrise was at 7:52 am and sunset will be at 6:34 pm; the daylight will last for 10h and 42min.

Hourly overview

Hourly temperatures

Warmest hour: 12 pm 72°C.
Coldest hour: 12 am 45°C.

Chance of precipitation

Highest chance: 10 pm - 12 am 2%.

Hourly weather forecast

  • 10 am
  • 63°F
  • Feels like:
    63°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 14mphSSW 205°
  • Humidity: 23%
  • Pressure: 29.83"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 11 am
  • 68°F
  • Feels like:
    68°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 17mphSSW 205°
  • Humidity: 21%
  • Pressure: 29.8"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 12 pm
  • 72°F
  • Feels like:
    72°F
Mostly Cloudy / Wind
Mostly Cloudy / Wind
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 20mphSSW 203°
  • Humidity: 20%
  • Pressure: 29.77"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 1 pm
  • 68°F
  • Feels like:
    68°F
Mostly Cloudy / Wind
Mostly Cloudy / Wind
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 21mphSW 216°
  • Humidity: 22%
  • Pressure: 29.74"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 2 pm
  • 70°F
  • Feels like:
    70°F
Partly Cloudy / Wind
Partly Cloudy / Wind
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 23mphWSW 237°
  • Humidity: 22%
  • Pressure: 29.74"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 3 pm
  • 70°F
  • Feels like:
    70°F
Partly Cloudy / Wind
Partly Cloudy / Wind
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 24mphWSW 248°
  • Humidity: 24%
  • Pressure: 29.74"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 4 pm
  • 68°F
  • Feels like:
    68°F
Partly Cloudy / Wind
Partly Cloudy / Wind
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 24mphWSW 257°
  • Humidity: 25%
  • Pressure: 29.77"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 5 pm
  • 66°F
  • Feels like:
    66°F
Partly Cloudy / Wind
Partly Cloudy / Wind
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 23mphWSW 258°
  • Humidity: 28%
  • Pressure: 29.8"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 pm
  • 63°F
  • Feels like:
    59°F
Mostly Sunny / Wind
Mostly Sunny / Wind
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 19mphW 261°
  • Humidity: 33%
  • Pressure: 29.8"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:34 pm
  • 7 pm
  • 57°F
  • Feels like:
    54°F
Mostly Clear
Mostly Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 14mphW 266°
  • Humidity: 40%
  • Pressure: 29.85"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 8 pm
  • 54°F
  • Feels like:
    48°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 11mphW 276°
  • Humidity: 46%
  • Pressure: 29.88"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 9 pm
  • 50°F
  • Feels like:
    46°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 9mphW 280°
  • Humidity: 50%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 46°F
  • Feels like:
    43°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 9mphWNW 282°
  • Humidity: 55%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 11 pm
  • 46°F
  • Feels like:
    41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 7mphW 280°
  • Humidity: 58%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Today, in Sweet Grass, primarily gloomy and occasionally mostly clear weather is predicted.
The temperature will vary between the lowest temperature of 46.4°F and the highest temperature of 71.6°F. The warmest part of the day is expected around noon.
Today, the temperature will be closer to September's norm than to October's average of 51.4°F. The lowest temperature today will be slightly cooler than the standard minimum for October.
Updated: Oct 17, 2026 @ 15:05:34 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

The temperature at 9:05 am MDT is 59°F.

Today, expect a partly cloudy sky with occasional wind gusts.

Today, the maximum temperature will be 71.6°F, while the minimum temperature will be 32°F.
The highest temperature today will be uncommonly higher than the average maximum of 51.4°F in October. Today, the lowest temperature will be slightly cooler than the average low temperature.

On Saturday, in Sweet Grass, sunrise was at 7:52 am and sunset will be at 6:34 pm (MDT).

In Sweet Grass, today, there will be 10h and 42min of daylight.