Roundup Weather Forecast 15 Days, Weather in Roundup Today
Current weather conditions and 15 day weather forecast for Roundup, 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
| 26 March 2026 Thursday 9.4 ° C / 48.9°F  Partly cloudy |
Feels Like : 5.3 ° C / 41.6°F Humidity : % 23 Pressure : 1024 mb Wind Speed : 37.4 kmph / 23.3 miles from NW  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 75 |
15 day weather forecast for Roundup, MT, USA
Weather Forecast for next 15 Days for Roundup 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, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 26 March 2026 Thursday |  Patchy rain nearby |
-1.6 ° C (29.1°F) |
9.5 ° C (49.1°F) |
3.2 ° C (37.8°F) |
% 63 | 83% | 1.3 | Sunrise:07:05 AM Sunset: 07:36 PM |
Moonrise:12:17 PM Moonset: 04:09 AM Moon Phase ( Waxing Gibbous ) |
|
| 27 March 2026 Friday | Partly Cloudy |
-4.6 ° C (23.7°F) |
10.1 ° C (50.2°F) |
1.4 ° C (34.5°F) |
% 72 | 0% | 1.2 | Sunrise:07:03 AM Sunset: 07:37 PM |
Moonrise:01:36 PM Moonset: 04:48 AM Moon Phase ( Waxing Gibbous ) |
|
| 28 March 2026 Saturday | Partly Cloudy |
-0.7 ° C (30.7°F) |
17.2 ° C (63°F) |
7.5 ° C (45.5°F) |
% 68 | 0% | 1.1 | Sunrise:07:01 AM Sunset: 07:38 PM |
Moonrise:02:54 PM Moonset: 05:18 AM Moon Phase ( Waxing Gibbous ) |
|
| 29 March 2026 Sunday | Partly Cloudy |
2.1 ° C (35.8°F) |
9.8 ° C (49.6°F) |
6.3 ° C (43.4°F) |
% 76 | 0% | 1.2 | Sunrise:06:59 AM Sunset: 07:40 PM |
Moonrise:04:10 PM Moonset: 05:40 AM Moon Phase ( Waxing Gibbous ) |
|
| 30 March 2026 Monday |  Sunny |
5.5 ° C (41.9°F) |
24.6 ° C (76.3°F) |
14.3 ° C (57.8°F) |
% 37 | 0% | 1.1 | Sunrise:06:57 AM Sunset: 07:41 PM |
Moonrise:05:24 PM Moonset: 05:59 AM Moon Phase ( Waxing Gibbous ) |
|
| 31 March 2026 Tuesday | Patchy rain nearby |
2.4 ° C (36.3°F) |
12.9 ° C (55.2°F) |
11.1 ° C (51.9°F) |
% 47 | 62% | 0 | Sunrise:06:55 AM Sunset: 07:42 PM |
Moonrise:06:35 PM Moonset: 06:15 AM Moon Phase ( Waxing Gibbous ) |
|
| 01 April 2026 Wednesday |  Heavy snow |
-0.8 ° C (30.5°F) |
0.1 ° C (32.2°F) |
-0.1 ° C (31.8°F) |
% 97 | 52% | 1 | Sunrise:06:53 AM Sunset: 07:44 PM |
Moonrise:07:45 PM Moonset: 06:31 AM Moon Phase ( Waxing Gibbous ) |
|
| 02 April 2026 Thursday | Patchy rain nearby |
-2.4 ° C (27.6°F) |
7.5 ° C (45.5°F) |
2.9 ° C (37.1°F) |
% 77 | 0% | 1 | Sunrise:06:51 AM Sunset: 07:45 PM |
Moonrise:08:54 PM Moonset: 06:48 AM Moon Phase ( Full Moon ) |
|
| 03 April 2026 Friday |  Overcast |
2.1 ° C (35.8°F) |
6.2 ° C (43.2°F) |
3.5 ° C (38.3°F) |
% 52 | 0% | 1 | Sunrise:06:50 AM Sunset: 07:46 PM |
Moonrise:10:04 PM Moonset: 07:06 AM Moon Phase ( Waning Gibbous ) |
|
| 04 April 2026 Saturday | Partly Cloudy |
-0.9 ° C (30.4°F) |
9.3 ° C (48.8°F) |
4.5 ° C (40.2°F) |
% 54 | 0% | 2 | Sunrise:06:48 AM Sunset: 07:48 PM |
Moonrise:11:13 PM Moonset: 07:27 AM Moon Phase ( Waning Gibbous ) |
|
| 05 April 2026 Sunday | Partly Cloudy |
0.5 ° C (32.9°F) |
15.8 ° C (60.5°F) |
8 ° C (46.4°F) |
% 49 | 0% | 3 | Sunrise:06:46 AM Sunset: 07:49 PM |
Moonrise:No moonrise Moonset: 07:53 AM Moon Phase ( Waning Gibbous ) |
|
| 06 April 2026 Monday | Patchy rain nearby |
1.6 ° C (34.8°F) |
8.2 ° C (46.8°F) |
6.2 ° C (43.2°F) |
% 51 | 70% | 2 | Sunrise:06:44 AM Sunset: 07:50 PM |
Moonrise:12:20 AM Moonset: 08:25 AM Moon Phase ( Waning Gibbous ) |
|
| 07 April 2026 Tuesday |  Blowing snow |
-3.7 ° C (25.4°F) |
0.9 ° C (33.6°F) |
-1.4 ° C (29.5°F) |
% 55 | 0% | 1 | Sunrise:06:42 AM Sunset: 07:52 PM |
Moonrise:01:23 AM Moonset: 09:06 AM Moon Phase ( Waning Gibbous ) |
|
| 08 April 2026 Wednesday | Sunny |
-4.6 ° C (23.7°F) |
13.1 ° C (55.6°F) |
3.4 ° C (38.2°F) |
% 45 | 0% | 2 | Sunrise:06:40 AM Sunset: 07:53 PM |
Moonrise:02:18 AM Moonset: 09:58 AM Moon Phase ( Waning Gibbous ) |
|
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