Weather forecast for todayRoundup, MT

Weather forecast for today

Current condition 9:13 am MDT

  • 55°F
  • Feels like:
    52°F
Sunny
Sunny
  • Precipitation: 0"
  • Wind: 16mphSW 230°
  • Humidity: 34%
  • Dewpoint: 28°F
  • Pressure: 30.06"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Currently, the weather is ideal, with the sun shining and the air feeling fresh.
The temperature is a mild 55.4°F, the feels-like reading is calculated to be a fresh 51.8°F. The current temperature is far from today's maximum-anticipated 75.2°F.

Saturday Oct 17, 2026

  • 75°F
  • 41°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 17mphWSW 241°
  • Humidity: 28%
  • UV index: 3
  • Sunrise: 7:34 am MDT
  • Sunset: 6:24 pm MDT
  • ▼
Today, on Saturday, October 17, mostly sunny and dry conditions will continue.
A remarkable high of a warm 75.2°F during the day and a stark low of a cold 41°F at night are expected.
Today, climate comparisons show a temperature closer to September's 72.7°F than October's 56.3°F.
Sunrise was at 7:34 am and sunset will be at 6:24 pm; the daylight will last for 10h and 49min.

Hourly overview

Hourly temperatures

Warmest hour: 4 pm 73°C.
Coldest hour: 12 am 52°C.

Chance of precipitation

Highest chance: 10 pm - 12 am 2%.

Hourly weather forecast

  • 10 am
  • 61°F
  • Feels like:
    57°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 16mphSW 231°
  • Humidity: 32%
  • Pressure: 30.03"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 11 am
  • 64°F
  • Feels like:
    63°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 16mphSW 232°
  • Humidity: 28%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 12 pm
  • 70°F
  • Feels like:
    70°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 17mphSW 234°
  • Humidity: 25%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 1 pm
  • 68°F
  • Feels like:
    68°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 16mphSW 235°
  • Humidity: 28%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 2 pm
  • 72°F
  • Feels like:
    72°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 15mphWSW 241°
  • Humidity: 25%
  • Pressure: 29.88"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 3 pm
  • 72°F
  • Feels like:
    72°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 12mphWSW 248°
  • Humidity: 25%
  • Pressure: 29.85"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 4 pm
  • 73°F
  • Feels like:
    73°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 11mphWSW 248°
  • Humidity: 26%
  • Pressure: 29.83"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 5 pm
  • 72°F
  • Feels like:
    72°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphWSW 249°
  • Humidity: 28%
  • Pressure: 29.83"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 pm
  • 68°F
  • Feels like:
    68°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 8mphWSW 250°
  • Humidity: 30%
  • Pressure: 29.83"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:24 pm
  • 7 pm
  • 63°F
  • Feels like:
    63°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphWSW 246°
  • Humidity: 35%
  • Pressure: 29.85"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 8 pm
  • 59°F
  • Feels like:
    59°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 8mphWSW 251°
  • Humidity: 37%
  • Pressure: 29.88"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 9 pm
  • 57°F
  • Feels like:
    55°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 7mphWSW 252°
  • Humidity: 39%
  • Pressure: 29.88"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 55°F
  • Feels like:
    54°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 8mphWSW 253°
  • Humidity: 40%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 11 pm
  • 55°F
  • Feels like:
    52°F
Mostly Clear
Mostly Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 8mphWSW 249°
  • Humidity: 41%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Today, a combination of cloud-filled and sun-filled weather is expected.
The temperature will be between a maximum of 73.4°F and a minimum of 55.4°F. The warmest part of the day is expected around 4 pm.
Today, the expected high matches September's average of 72.7°F more than October's. The lowest temperature today will be consistent with October's average minimum.
Updated: Oct 17, 2026 @ 15:13:50 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

The current temperature (9:13 am MDT) is 55.4°F.

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

Today, the highest temperature will be 75.2°F, while the lowest temperature will be 41°F.
The highest temperature today will be significantly higher than the average maximum of 56.3°F in October. The lowest temperature today will be in line with the average low temperature.

On Saturday, in Roundup, sunrise was at 7:34 am and sunset will be at 6:24 pm (MDT).

In Roundup, the length of the day today will be 10h and 49min.