Roundup Airport Weather Forecast 15 Days, Weather in RPX Today
Current weather conditions and 15 day weather forecast for Roundup Airport, Montana, USA including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain risk, wind speed, cloud, pressure, and UV index.
Current weather conditions at Roundup Airport
| 15 December 2025 Monday 10.3 ° C / 50.5°F  Partly cloudy |
Feels Like : 8.4 ° C / 47°F Humidity : % 33 Pressure : 1015 mb Wind Speed : 14.4 kmph / 8.9 miles from SW  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 75 |
15 day weather forecast for Roundup Airport, MT, USA
Weather Forecast for next 15 Days for Roundup Airport including weather warnings, temperature, rain, wind speed, cloud, snow, wind speed and wind direction, pressure and UV index.Here is weather for the next 15 days in Roundup Airport, Montana state, US. To see the daily forecast, scroll to the table below.
| Date | Weather forecast | Low temperature | High temperature | Avg. temperature | Humidity | Chance of rain | UV Index | Sun Position | Moon Position | |
|---|---|---|---|---|---|---|---|---|---|---|
| 14 December 2025 Sunday |  Sunny |
-9.3 ° C (15.3°F) |
6 ° C (42.8°F) |
-0.6 ° C (31°F) |
% 67 | 0% | 0.2 | Sunrise:07:51 AM Sunset: 04:27 PM |
Moonrise:02:42 AM Moonset: 01:13 PM Moon Phase ( Waning Crescent ) |
|
| 15 December 2025 Monday | Partly Cloudy |
-2.2 ° C (28°F) |
5.6 ° C (42.1°F) |
1.2 ° C (34.1°F) |
% 94 | 0% | 0.2 | Sunrise:07:51 AM Sunset: 04:28 PM |
Moonrise:03:49 AM Moonset: 01:32 PM Moon Phase ( Waning Crescent ) |
|
| 16 December 2025 Tuesday |  Overcast |
-0.7 ° C (30.7°F) |
3.4 ° C (38.1°F) |
1.9 ° C (35.4°F) |
% 92 | 0% | 0.2 | Sunrise:07:52 AM Sunset: 04:28 PM |
Moonrise:04:56 AM Moonset: 01:54 PM Moon Phase ( Waning Crescent ) |
|
| 17 December 2025 Wednesday |  Patchy rain nearby |
1 ° C (33.8°F) |
5 ° C (41°F) |
2.9 ° C (37.2°F) |
% 60 | 89% | 0.1 | Sunrise:07:53 AM Sunset: 04:28 PM |
Moonrise:06:03 AM Moonset: 02:23 PM Moon Phase ( Waning Crescent ) |
|
| 18 December 2025 Thursday | Partly Cloudy |
-5.6 ° C (21.8°F) |
-1.3 ° C (29.7°F) |
-1.4 ° C (29.5°F) |
% 58 | 0% | 0 | Sunrise:07:53 AM Sunset: 04:29 PM |
Moonrise:07:08 AM Moonset: 03:00 PM Moon Phase ( Waning Crescent ) |
|
| 19 December 2025 Friday |  Light freezing rain |
-2.9 ° C (26.7°F) |
3.2 ° C (37.8°F) |
-0.5 ° C (31.2°F) |
% 59 | 84% | 1 | Sunrise:07:54 AM Sunset: 04:29 PM |
Moonrise:08:07 AM Moonset: 03:47 PM Moon Phase ( New Moon ) |
|
| 20 December 2025 Saturday | Sunny |
-2.8 ° C (26.9°F) |
2.2 ° C (35.9°F) |
-1.2 ° C (29.8°F) |
% 49 | 0% | 2 | Sunrise:07:55 AM Sunset: 04:29 PM |
Moonrise:08:58 AM Moonset: 04:44 PM Moon Phase ( New Moon ) |
|
| 21 December 2025 Sunday |  Patchy moderate snow |
-2.9 ° C (26.7°F) |
0.7 ° C (33.3°F) |
-1.3 ° C (29.6°F) |
% 57 | 84% | 1 | Sunrise:07:55 AM Sunset: 04:30 PM |
Moonrise:09:39 AM Moonset: 05:50 PM Moon Phase ( Waxing Crescent ) |
|
| 22 December 2025 Monday | Light freezing rain |
-16.7 ° C (1.9°F) |
-9.6 ° C (14.8°F) |
-9.9 ° C (14.2°F) |
% 90 | 73% | 1 | Sunrise:07:56 AM Sunset: 04:30 PM |
Moonrise:10:11 AM Moonset: 07:00 PM Moon Phase ( Waxing Crescent ) |
|
| 23 December 2025 Tuesday | Partly Cloudy |
-20 ° C (-4.1°F) |
-11.3 ° C (11.7°F) |
-16.8 ° C (1.8°F) |
% 91 | 0% | 2 | Sunrise:07:56 AM Sunset: 04:31 PM |
Moonrise:10:36 AM Moonset: 08:11 PM Moon Phase ( Waxing Crescent ) |
|
| 24 December 2025 Wednesday | Light freezing rain |
-20.3 ° C (-4.6°F) |
-15.7 ° C (3.7°F) |
-18.4 ° C (-1°F) |
% 95 | 0% | 1 | Sunrise:07:56 AM Sunset: 04:32 PM |
Moonrise:10:57 AM Moonset: 09:24 PM Moon Phase ( Waxing Crescent ) |
|
| 25 December 2025 Thursday |  Light snow |
-20.7 ° C (-5.3°F) |
-19.3 ° C (-2.7°F) |
-20 ° C (-4.1°F) |
% 91 | 72% | 1 | Sunrise:07:57 AM Sunset: 04:32 PM |
Moonrise:11:16 AM Moonset: 10:36 PM Moon Phase ( Waxing Crescent ) |
|
| 26 December 2025 Friday | Overcast |
-25.8 ° C (-14.4°F) |
-18.9 ° C (-2°F) |
-22.5 ° C (-8.4°F) |
% 92 | 0% | 1 | Sunrise:07:57 AM Sunset: 04:33 PM |
Moonrise:11:33 AM Moonset: 11:49 PM Moon Phase ( Waxing Crescent ) |
|
| 27 December 2025 Saturday | Overcast |
-20.7 ° C (-5.3°F) |
-12.2 ° C (10.1°F) |
-17.9 ° C (-0.3°F) |
% 90 | 0% | 1 | Sunrise:07:57 AM Sunset: 04:34 PM |
Moonrise:11:50 AM Moonset: No moonset Moon Phase ( First Quarter ) |
|
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