Weather forecast for tomorrowRoundup, MT
Weather forecast for tomorrow
Sunday Oct 18, 2026
- 63°F
- 36°F
Partly Cloudy
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 11mphE 80°
- Humidity: 47%
- UV index: 3
- Sunrise: 7:36 am MDT
- Sunset: 6:22 pm MDT
- details ▼
Tomorrow, on Sunday, thin clouds will pass through at times, but overall, it will remain bright.
Temperature changes will be remarkable, ranging from a high of an enjoyable 62.6°F to a low of an icy 35.6°F.
Tomorrow, the peak temperature is predicted to be a couple of degrees higher than the usual high for October at 56.3°F.
Sunrise will be at 7:36 am and sunset at 6:22 pm; tomorrow's daylight will last for 10h and 46min.
Temperature changes will be remarkable, ranging from a high of an enjoyable 62.6°F to a low of an icy 35.6°F.
Tomorrow, the peak temperature is predicted to be a couple of degrees higher than the usual high for October at 56.3°F.
Sunrise will be at 7:36 am and sunset at 6:22 pm; tomorrow's daylight will last for 10h and 46min.
Hourly overview
Hourly temperatures
Warmest hour: 3 pm 61°C.
Coldest hour: 6 am 43°C.
Coldest hour: 6 am 43°C.
Chance of precipitation
Highest chance: 6 am 3%.
Hourly weather forecast
- 12 am
- 48°F
- Feels like:46°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 7mphWSW 256°
- Humidity: 50%
- Pressure: 29.94"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 2 am
- 46°F
- Feels like:45°F
Mostly Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 6mphWSW 257°
- Humidity: 54%
- Pressure: 30"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 4 am
- 45°F
- Feels like:41°F
Mostly Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 6mphNW 310°
- Humidity: 62%
- Pressure: 30.03"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 6 am
- 43°F
- Feels like:39°F
Mostly Clear
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 7mphNNW 335°
- Humidity: 65%
- Pressure: 30.09"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunrise: 7:36 am
- 8 am
- 39°F
- Feels like:36°F
Mostly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 6mphSSE 167°
- Humidity: 74%
- Pressure: 30.15"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 am
- 48°F
- Feels like:46°F
Partly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 6mphSE 141°
- Humidity: 58%
- Pressure: 30.15"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 12 pm
- 57°F
- Feels like:55°F
Mostly Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 9mphENE 63°
- Humidity: 39%
- Pressure: 30.12"Hg
- Visibility: 10mi
- UV index: 3
- details ▼
- 2 pm
- 61°F
- Feels like:59°F
Partly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 9mphENE 78°
- Humidity: 35%
- Pressure: 30.06"Hg
- Visibility: 10mi
- UV index: 3
- details ▼
- 4 pm
- 61°F
- Feels like:59°F
Mostly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 11mphENE 76°
- Humidity: 34%
- Pressure: 30.06"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 6 pm
- 57°F
- Feels like:55°F
Partly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 9mphENE 72°
- Humidity: 39%
- Pressure: 30.06"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:22 pm
- 8 pm
- 50°F
- Feels like:46°F
Clear
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 7mphENE 62°
- Humidity: 48%
- Pressure: 30.09"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 48°F
- Feels like:45°F
Clear
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 6mphENE 65°
- Humidity: 52%
- Pressure: 30.12"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Tomorrow, on Sunday, primarily cloudy and occasionally mostly clear weather is predicted.
The temperature will vary between the lowest temperature of 39.2°F and the highest temperature of 60.8°F. The warmest part of the day will be from 2 pm to 4 pm.
Tomorrow, the temperature is expected to be a few degrees higher than October's normal maximum of 56.3°F. Tomorrow, the nighttime low will be also a couple of degrees lower than October's typical minimum of 39.7°F.
The temperature will vary between the lowest temperature of 39.2°F and the highest temperature of 60.8°F. The warmest part of the day will be from 2 pm to 4 pm.
Tomorrow, the temperature is expected to be a few degrees higher than October's normal maximum of 56.3°F. Tomorrow, the nighttime low will be also a couple of degrees lower than October's typical minimum of 39.7°F.
Updated: Oct 18, 2026 @ 03:41:03 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
On Sunday, in Roundup, expect partly sunny skies with periods of cloudiness.
Tomorrow, the maximum temperature will be 62.6°F, while the minimum temperature will be 35.6°F.
Tomorrow, the maximum temperature will be relatively higher than the average highest temperature in October. The lowest temperature tomorrow will be also a few degrees lower than the average low temperature.
Tomorrow, the maximum temperature will be relatively higher than the average highest temperature in October. The lowest temperature tomorrow will be also a few degrees lower than the average low temperature.
On Sunday, in Roundup, sunrise will be at 7:36 am and sunset at 6:22 pm (MDT).
In Roundup, tomorrow, there will be 10h and 46min of daylight.
