Boulder Weather Forecast 15 Days, Weather in Boulder Today
Current weather conditions and 15 day weather forecast for Boulder, Wyoming, 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
| 15 December 2025 Monday -9.9 ° C / 14.2°F  Clear |
Feels Like : -13.3 ° C / 8.1°F Humidity : % 79 Pressure : 1030 mb Wind Speed : 5.8 kmph / 3.6 miles from N  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for Boulder, WY, 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, Wyoming 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 15 December 2025 Monday |  Partly Cloudy |
-5 ° C (23°F) |
5.1 ° C (41.2°F) |
-0.4 ° C (31.2°F) |
% 51 | 0% | 0.3 | Sunrise:07:43 AM Sunset: 04:46 PM |
Moonrise:03:44 AM Moonset: 01:47 PM Moon Phase ( Waning Crescent ) |
|
| 16 December 2025 Tuesday |  Cloudy |
-1.7 ° C (28.9°F) |
2 ° C (35.6°F) |
-0 ° C (31.9°F) |
% 92 | 0% | 0.2 | Sunrise:07:43 AM Sunset: 04:46 PM |
Moonrise:04:48 AM Moonset: 02:12 PM Moon Phase ( Waning Crescent ) |
|
| 17 December 2025 Wednesday |  Moderate or heavy snow showers |
-7.2 ° C (19.1°F) |
1.1 ° C (34°F) |
-1.5 ° C (29.3°F) |
% 90 | 83% | 0.1 | Sunrise:07:44 AM Sunset: 04:46 PM |
Moonrise:05:52 AM Moonset: 02:44 PM Moon Phase ( Waning Crescent ) |
|
| 18 December 2025 Thursday | Moderate or heavy snow showers |
-10.1 ° C (13.8°F) |
-4 ° C (24.8°F) |
-6.5 ° C (20.3°F) |
% 73 | 74% | 0.2 | Sunrise:07:45 AM Sunset: 04:47 PM |
Moonrise:06:55 AM Moonset: 03:23 PM Moon Phase ( Waning Crescent ) |
|
| 19 December 2025 Friday |  Blowing snow |
-4.4 ° C (24°F) |
2.7 ° C (36.8°F) |
0.4 ° C (32.8°F) |
% 85 | 89% | 0 | Sunrise:07:45 AM Sunset: 04:47 PM |
Moonrise:07:53 AM Moonset: 04:11 PM Moon Phase ( New Moon ) |
|
| 20 December 2025 Saturday |  Light freezing rain |
-11.9 ° C (10.5°F) |
-4.5 ° C (24°F) |
-5.9 ° C (21.3°F) |
% 72 | 88% | 1 | Sunrise:07:46 AM Sunset: 04:48 PM |
Moonrise:08:44 AM Moonset: 05:07 PM Moon Phase ( New Moon ) |
|
| 21 December 2025 Sunday |  Patchy moderate snow |
-12.5 ° C (9.5°F) |
-2.6 ° C (27.4°F) |
-8 ° C (17.7°F) |
% 71 | 89% | 1 | Sunrise:07:46 AM Sunset: 04:48 PM |
Moonrise:09:27 AM Moonset: 06:10 PM Moon Phase ( Waxing Crescent ) |
|
| 22 December 2025 Monday |  Moderate snow |
-2.6 ° C (27.3°F) |
2.9 ° C (37.3°F) |
0.4 ° C (32.7°F) |
% 91 | 75% | 1 | Sunrise:07:47 AM Sunset: 04:49 PM |
Moonrise:10:01 AM Moonset: 07:18 PM Moon Phase ( Waxing Crescent ) |
|
| 23 December 2025 Tuesday |  Heavy snow |
-0.4 ° C (31.4°F) |
1 ° C (33.8°F) |
0.3 ° C (32.6°F) |
% 95 | 76% | 1 | Sunrise:07:47 AM Sunset: 04:49 PM |
Moonrise:10:30 AM Moonset: 08:26 PM Moon Phase ( Waxing Crescent ) |
|
| 24 December 2025 Wednesday | Partly Cloudy |
-3.8 ° C (25.2°F) |
2.8 ° C (37°F) |
-1.4 ° C (29.5°F) |
% 84 | 0% | 2 | Sunrise:07:48 AM Sunset: 04:50 PM |
Moonrise:10:54 AM Moonset: 09:35 PM Moon Phase ( Waxing Crescent ) |
|
| 25 December 2025 Thursday |  Light snow |
-5.2 ° C (22.7°F) |
1.7 ° C (35.1°F) |
-2 ° C (28.4°F) |
% 82 | 73% | 1 | Sunrise:07:48 AM Sunset: 04:50 PM |
Moonrise:11:16 AM Moonset: 10:43 PM Moon Phase ( Waxing Crescent ) |
|
| 26 December 2025 Friday | Sunny |
-9 ° C (15.9°F) |
-1.1 ° C (30.1°F) |
-6.2 ° C (20.8°F) |
% 76 | 0% | 2 | Sunrise:07:48 AM Sunset: 04:51 PM |
Moonrise:11:36 AM Moonset: 11:53 PM Moon Phase ( Waxing Crescent ) |
|
| 27 December 2025 Saturday | Light freezing rain |
-8.1 ° C (17.5°F) |
-0.4 ° C (31.4°F) |
-4.7 ° C (23.6°F) |
% 74 | 64% | 1 | Sunrise:07:49 AM Sunset: 04:52 PM |
Moonrise:11:56 AM Moonset: No moonset Moon Phase ( First Quarter ) |
|
| 28 December 2025 Sunday | Patchy moderate snow |
-8.2 ° C (17.2°F) |
-0.7 ° C (30.8°F) |
-3.4 ° C (25.8°F) |
% 82 | 69% | 1 | Sunrise:07:49 AM Sunset: 04:53 PM |
Moonrise:12:18 PM Moonset: 01:05 AM Moon Phase ( Waxing Gibbous ) |
|
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