| Country: | United States |
|---|---|
| State: | Montana (MT) |
| Type: | Seat of a Second-Order Administrative Division |
| Lat/Long: | 46°27'N / 108°33'W |
| Currency: | United States Dollar (USD) |
| Languages: | English |
| Also known as: | RPX, Raundap, Raundup, lang da pu |
Holiday Note: Jun 19, Juneteenth. Businesses may be closed. See more
°F
Weather
64 °F
Broken clouds.
79 / 59 °F
| Tue 17. |  | 78 / 54 °F |
| Wed 18. |  | 85 / 55 °F |
Weather by CustomWeather, © 2025
More Sun & Moon in Roundup
+ Show More Twilight and Moon Phase Information
Solar Noon
Sun in South: 1:15 pm
Altitude: 66.9°
Altitude: 66.9°
Astronomical
Twilight
2:32 am – 3:48 am
10:41 pm – 11:57 pm
10:41 pm – 11:57 pm
Nautical
Twilight
3:48 am – 4:41 am
9:48 pm – 10:41 pm
9:48 pm – 10:41 pm
Civil
Twilight
4:41 am – 5:20 am
9:09 pm – 9:48 pm
9:09 pm – 9:48 pm
Previous
Moon Phase
Full Moon
June 11, 2025
1:43 am
June 11, 2025
1:43 am
Next
Moon Phase
Third Quarter
June 18, 2025
1:19 pm
June 18, 2025
1:19 pm
Airports
- Billings Logan International Airport, BIL
About 44 mi S of Roundup - Sheridan County Airport, SHR
About 138 mi SSE of Roundup
Roundup
USA
10:1355am
Monday, June 16, 2025