Boulder Weather Forecast 15 Days, Weather in Boulder Today
Current weather conditions and 15 day weather forecast for Boulder, 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 Boulder
| 05 December 2025 Friday -3.9 ° C / 25°F  Freezing fog |
Feels Like : -6.2 ° C / 20.8°F Humidity : % 100 Pressure : 1015 mb Wind Speed : 5.4 kmph / 3.4 miles from WNW  Visibility : 0.4 km Precipitation (rainfall) : 0 mm Cloud (%) : 100 |
15 day weather forecast for Boulder, MT, USA
Weather Forecast for next 15 Days for Boulder 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 Boulder, 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 |  Moderate or heavy snow showers |
-8.6 ° C (16.5°F) |
1.9 ° C (35.4°F) |
-4.2 ° C (24.4°F) |
% 89 | 67% | 0.2 | Sunrise:07:56 AM Sunset: 04:42 PM |
Moonrise:05:07 PM Moonset: 09:17 AM Moon Phase ( Full Moon ) |
|
| 06 December 2025 Saturday | Moderate or heavy snow showers |
-8.4 ° C (17°F) |
0.8 ° C (33.4°F) |
-4.9 ° C (23.2°F) |
% 87 | 85% | 0.2 | Sunrise:07:57 AM Sunset: 04:42 PM |
Moonrise:06:22 PM Moonset: 10:20 AM Moon Phase ( Waning Gibbous ) |
|
| 07 December 2025 Sunday |  Light freezing rain |
-9 ° C (15.8°F) |
-0.5 ° C (31.1°F) |
-6.1 ° C (21°F) |
% 82 | 89% | 0.2 | Sunrise:07:58 AM Sunset: 04:42 PM |
Moonrise:07:44 PM Moonset: 11:06 AM Moon Phase ( Waning Gibbous ) |
|
| 08 December 2025 Monday |  Partly Cloudy |
-9.2 ° C (15.5°F) |
0.7 ° C (33.3°F) |
-5.4 ° C (22.3°F) |
% 84 | 0% | 0.1 | Sunrise:07:59 AM Sunset: 04:42 PM |
Moonrise:09:05 PM Moonset: 11:39 AM Moon Phase ( Waning Gibbous ) |
|
| 09 December 2025 Tuesday | Moderate or heavy snow showers |
-7.3 ° C (18.9°F) |
1.3 ° C (34.3°F) |
-3.4 ° C (25.9°F) |
% 84 | 64% | 0 | Sunrise:08:00 AM Sunset: 04:42 PM |
Moonrise:10:22 PM Moonset: 12:04 PM Moon Phase ( Waning Gibbous ) |
|
| 10 December 2025 Wednesday | Moderate or heavy snow showers |
-8.2 ° C (17.3°F) |
-1.4 ° C (29.4°F) |
-5.2 ° C (22.6°F) |
% 87 | 85% | 1 | Sunrise:08:01 AM Sunset: 04:42 PM |
Moonrise:11:35 PM Moonset: 12:23 PM Moon Phase ( Waning Gibbous ) |
|
| 11 December 2025 Thursday | Partly Cloudy |
-17.3 ° C (0.8°F) |
-3.5 ° C (25.8°F) |
-11.6 ° C (11.1°F) |
% 85 | 0% | 2 | Sunrise:08:02 AM Sunset: 04:42 PM |
Moonrise:No moonrise Moonset: 12:40 PM Moon Phase ( Last Quarter ) |
|
| 12 December 2025 Friday |  Heavy snow |
-20.3 ° C (-4.6°F) |
-10.2 ° C (13.6°F) |
-13.6 ° C (7.4°F) |
% 94 | 78% | 1 | Sunrise:08:03 AM Sunset: 04:42 PM |
Moonrise:12:44 AM Moonset: 12:56 PM Moon Phase ( Waning Crescent ) |
|
| 13 December 2025 Saturday |  Light snow |
-19.2 ° C (-2.6°F) |
-4.1 ° C (24.6°F) |
-12.5 ° C (9.4°F) |
% 97 | 61% | 1 | Sunrise:08:03 AM Sunset: 04:42 PM |
Moonrise:01:51 AM Moonset: 01:11 PM Moon Phase ( Waning Crescent ) |
|
| 14 December 2025 Sunday |  Moderate snow |
-25.5 ° C (-13.8°F) |
-13.7 ° C (7.3°F) |
-18.6 ° C (-1.5°F) |
% 97 | 68% | 1 | Sunrise:08:04 AM Sunset: 04:42 PM |
Moonrise:02:56 AM Moonset: 01:28 PM Moon Phase ( Waning Crescent ) |
|
| 15 December 2025 Monday |  Mist |
-23.4 ° C (-10.2°F) |
-6.4 ° C (20.4°F) |
-17.8 ° C (-0°F) |
% 93 | 0% | 1 | Sunrise:08:05 AM Sunset: 04:42 PM |
Moonrise:04:03 AM Moonset: 01:47 PM Moon Phase ( Waning Crescent ) |
|
| 16 December 2025 Tuesday | Light snow |
-30.9 ° C (-23.6°F) |
-15.2 ° C (4.7°F) |
-20.1 ° C (-4.2°F) |
% 97 | 85% | 1 | Sunrise:08:06 AM Sunset: 04:43 PM |
Moonrise:05:10 AM Moonset: 02:09 PM Moon Phase ( Waning Crescent ) |
|
| 17 December 2025 Wednesday | Moderate snow |
-34.1 ° C (-29.3°F) |
-21.1 ° C (-5.9°F) |
-27.4 ° C (-17.3°F) |
% 98 | 83% | 1 | Sunrise:08:06 AM Sunset: 04:43 PM |
Moonrise:06:17 AM Moonset: 02:38 PM Moon Phase ( Waning Crescent ) |
|
| 18 December 2025 Thursday | Mist |
-27.1 ° C (-16.8°F) |
-9.3 ° C (15.3°F) |
-19 ° C (-2.2°F) |
% 94 | 66% | 1 | Sunrise:08:07 AM Sunset: 04:43 PM |
Moonrise:07:22 AM Moonset: 03:15 PM Moon Phase ( Waning Crescent ) |
|
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