Roy Weather Forecast 15 Days, Weather in Roy Today
Current weather conditions and 15 day weather forecast for Roy, 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 Roy
| 05 December 2025 Friday -1.7 ° C / 28.9°F  Overcast |
Feels Like : -8.3 ° C / 17.1°F Humidity : % 96 Pressure : 1013 mb Wind Speed : 26.3 kmph / 16.3 miles from WNW  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 100 |
15 day weather forecast for Roy, MT, USA
Weather Forecast for next 15 Days for Roy 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 Roy, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 05 December 2025 Friday |  Patchy moderate snow |
-1.9 ° C (28.6°F) |
1.6 ° C (34.9°F) |
0.4 ° C (32.7°F) |
% 81 | 85% | 0.2 | Sunrise:07:47 AM Sunset: 04:24 PM |
Moonrise:04:46 PM Moonset: 09:10 AM Moon Phase ( Full Moon ) |
|
| 06 December 2025 Saturday |  Moderate or heavy snow showers |
-8.3 ° C (17.2°F) |
-4.6 ° C (23.7°F) |
-6.1 ° C (21.1°F) |
% 87 | 70% | 0.2 | Sunrise:07:48 AM Sunset: 04:24 PM |
Moonrise:06:02 PM Moonset: 10:12 AM Moon Phase ( Waning Gibbous ) |
|
| 07 December 2025 Sunday |  Cloudy |
-8.3 ° C (17.1°F) |
2 ° C (35.6°F) |
-2.8 ° C (26.9°F) |
% 83 | 0% | 0.2 | Sunrise:07:49 AM Sunset: 04:24 PM |
Moonrise:07:25 PM Moonset: 10:57 AM Moon Phase ( Waning Gibbous ) |
|
| 08 December 2025 Monday |  Sunny |
-3 ° C (26.6°F) |
3.8 ° C (38.9°F) |
2.7 ° C (36.8°F) |
% 74 | 0% | 0.2 | Sunrise:07:50 AM Sunset: 04:24 PM |
Moonrise:08:47 PM Moonset: 11:30 AM Moon Phase ( Waning Gibbous ) |
|
| 09 December 2025 Tuesday |  Patchy rain nearby |
1.5 ° C (34.6°F) |
6.8 ° C (44.3°F) |
4.8 ° C (40.7°F) |
% 71 | 87% | 0 | Sunrise:07:51 AM Sunset: 04:24 PM |
Moonrise:10:06 PM Moonset: 11:53 AM Moon Phase ( Waning Gibbous ) |
|
| 10 December 2025 Wednesday | Overcast |
-2.3 ° C (27.9°F) |
0.5 ° C (33°F) |
-0.3 ° C (31.4°F) |
% 81 | 0% | 1 | Sunrise:07:52 AM Sunset: 04:24 PM |
Moonrise:11:20 PM Moonset: 12:11 PM Moon Phase ( Waning Gibbous ) |
|
| 11 December 2025 Thursday |  Moderate snow |
-7.2 ° C (19°F) |
-2.5 ° C (27.5°F) |
-3.9 ° C (24.9°F) |
% 88 | 79% | 1 | Sunrise:07:53 AM Sunset: 04:24 PM |
Moonrise:No moonrise Moonset: 12:27 PM Moon Phase ( Last Quarter ) |
|
| 12 December 2025 Friday | Moderate snow |
-13 ° C (8.5°F) |
-11.4 ° C (11.5°F) |
-11.7 ° C (11°F) |
% 92 | 89% | 1 | Sunrise:07:54 AM Sunset: 04:24 PM |
Moonrise:12:29 AM Moonset: 12:41 PM Moon Phase ( Waning Crescent ) |
|
| 13 December 2025 Saturday |  Light snow |
-13.2 ° C (8.2°F) |
-9.4 ° C (15.2°F) |
-11.8 ° C (10.7°F) |
% 95 | 88% | 1 | Sunrise:07:55 AM Sunset: 04:24 PM |
Moonrise:01:38 AM Moonset: 12:56 PM Moon Phase ( Waning Crescent ) |
|
| 14 December 2025 Sunday | Moderate snow |
-16 ° C (3.3°F) |
-12.5 ° C (9.4°F) |
-13.3 ° C (8°F) |
% 92 | 82% | 1 | Sunrise:07:55 AM Sunset: 04:24 PM |
Moonrise:02:44 AM Moonset: 01:12 PM Moon Phase ( Waning Crescent ) |
|
| 15 December 2025 Monday |  Mist |
-27.2 ° C (-17°F) |
-17.8 ° C (0°F) |
-22.8 ° C (-9°F) |
% 95 | 0% | 1 | Sunrise:07:56 AM Sunset: 04:24 PM |
Moonrise:03:52 AM Moonset: 01:29 PM Moon Phase ( Waning Crescent ) |
|
| 16 December 2025 Tuesday | Light snow |
-25.9 ° C (-14.6°F) |
-18.6 ° C (-1.5°F) |
-21.5 ° C (-6.6°F) |
% 95 | 88% | 1 | Sunrise:07:57 AM Sunset: 04:25 PM |
Moonrise:05:00 AM Moonset: 01:51 PM Moon Phase ( Waning Crescent ) |
|
| 17 December 2025 Wednesday | Overcast |
-25.6 ° C (-14.1°F) |
-21.5 ° C (-6.8°F) |
-23 ° C (-9.5°F) |
% 95 | 0% | 1 | Sunrise:07:57 AM Sunset: 04:25 PM |
Moonrise:06:08 AM Moonset: 02:19 PM Moon Phase ( Waning Crescent ) |
|
| 18 December 2025 Thursday | Moderate snow |
-25.7 ° C (-14.2°F) |
-19.5 ° C (-3.2°F) |
-22.5 ° C (-8.5°F) |
% 95 | 63% | 1 | Sunrise:07:58 AM Sunset: 04:25 PM |
Moonrise:07:14 AM Moonset: 02:55 PM Moon Phase ( Waning Crescent ) |
|
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