Harrison Weather Forecast 15 Days, Weather in Harrison Today
Current weather conditions and 15 day weather forecast for Harrison, 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 Harrison
| 14 December 2025 Sunday 11.7 ° C / 53.1°F  Sunny |
Feels Like : 10.4 ° C / 50.7°F Humidity : % 35 Pressure : 1017 mb Wind Speed : 11.9 kmph / 7.4 miles from SW  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for Harrison, MT, USA
Weather Forecast for next 15 Days for Harrison 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 Harrison, 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 |
2.7 ° C (36.9°F) |
10.4 ° C (50.7°F) |
5.3 ° C (41.6°F) |
% 49 | 0% | 0.2 | Sunrise:08:01 AM Sunset: 04:44 PM |
Moonrise:02:55 AM Moonset: 01:28 PM Moon Phase ( Waning Crescent ) |
|
| 15 December 2025 Monday |  Overcast |
2.2 ° C (35.9°F) |
4.3 ° C (39.7°F) |
3.2 ° C (37.7°F) |
% 61 | 0% | 0.2 | Sunrise:08:02 AM Sunset: 04:44 PM |
Moonrise:04:00 AM Moonset: 01:48 PM Moon Phase ( Waning Crescent ) |
|
| 16 December 2025 Tuesday | Overcast |
0.2 ° C (32.4°F) |
3.2 ° C (37.8°F) |
2 ° C (35.7°F) |
% 76 | 0% | 0.2 | Sunrise:08:02 AM Sunset: 04:45 PM |
Moonrise:05:07 AM Moonset: 02:11 PM Moon Phase ( Waning Crescent ) |
|
| 17 December 2025 Wednesday |  Blowing snow |
-7.6 ° C (18.3°F) |
1.9 ° C (35.3°F) |
-2.8 ° C (27°F) |
% 67 | 88% | 0.2 | Sunrise:08:03 AM Sunset: 04:45 PM |
Moonrise:06:13 AM Moonset: 02:40 PM Moon Phase ( Waning Crescent ) |
|
| 18 December 2025 Thursday | Sunny |
-7.7 ° C (18.2°F) |
-1.6 ° C (29.2°F) |
-4.3 ° C (24.2°F) |
% 61 | 0% | 0 | Sunrise:08:04 AM Sunset: 04:45 PM |
Moonrise:07:18 AM Moonset: 03:18 PM Moon Phase ( Waning Crescent ) |
|
| 19 December 2025 Friday |  Light freezing rain |
-7.5 ° C (18.5°F) |
-3.9 ° C (25.1°F) |
-4.2 ° C (24.4°F) |
% 73 | 79% | 1 | Sunrise:08:04 AM Sunset: 04:46 PM |
Moonrise:08:16 AM Moonset: 04:05 PM Moon Phase ( New Moon ) |
|
| 20 December 2025 Saturday |  Partly Cloudy |
-7.4 ° C (18.6°F) |
-4.3 ° C (24.3°F) |
-5.9 ° C (21.5°F) |
% 66 | 0% | 2 | Sunrise:08:05 AM Sunset: 04:46 PM |
Moonrise:09:07 AM Moonset: 05:03 PM Moon Phase ( New Moon ) |
|
| 21 December 2025 Sunday | Light freezing rain |
-5.9 ° C (21.4°F) |
-3.5 ° C (25.7°F) |
-4.8 ° C (23.4°F) |
% 71 | 68% | 1 | Sunrise:08:05 AM Sunset: 04:47 PM |
Moonrise:09:49 AM Moonset: 06:07 PM Moon Phase ( Waxing Crescent ) |
|
| 22 December 2025 Monday |  Patchy moderate snow |
-10.7 ° C (12.7°F) |
-6.3 ° C (20.7°F) |
-7.6 ° C (18.2°F) |
% 74 | 60% | 1 | Sunrise:08:06 AM Sunset: 04:47 PM |
Moonrise:10:21 AM Moonset: 07:17 PM Moon Phase ( Waxing Crescent ) |
|
| 23 December 2025 Tuesday | Sunny |
-10.5 ° C (13°F) |
-7.6 ° C (18.3°F) |
-9 ° C (15.8°F) |
% 71 | 0% | 2 | Sunrise:08:06 AM Sunset: 04:48 PM |
Moonrise:10:48 AM Moonset: 08:28 PM Moon Phase ( Waxing Crescent ) |
|
| 24 December 2025 Wednesday | Partly Cloudy |
-12.9 ° C (8.7°F) |
-9.5 ° C (14.9°F) |
-10.2 ° C (13.7°F) |
% 77 | 0% | 2 | Sunrise:08:07 AM Sunset: 04:48 PM |
Moonrise:11:09 AM Moonset: 09:40 PM Moon Phase ( Waxing Crescent ) |
|
| 25 December 2025 Thursday |  Heavy snow |
-24 ° C (-11.3°F) |
-20.1 ° C (-4.2°F) |
-21.6 ° C (-6.9°F) |
% 93 | 61% | 1 | Sunrise:08:07 AM Sunset: 04:49 PM |
Moonrise:11:28 AM Moonset: 10:51 PM Moon Phase ( Waxing Crescent ) |
|
| 26 December 2025 Friday |  Moderate snow |
-22.1 ° C (-7.7°F) |
-17.9 ° C (-0.2°F) |
-20.2 ° C (-4.4°F) |
% 95 | 66% | 1 | Sunrise:08:07 AM Sunset: 04:50 PM |
Moonrise:11:46 AM Moonset: No moonset Moon Phase ( Waxing Crescent ) |
|
| 27 December 2025 Saturday | Light freezing rain |
-16.7 ° C (2°F) |
-13.2 ° C (8.3°F) |
-14.3 ° C (6.2°F) |
% 86 | 79% | 1 | Sunrise:08:07 AM Sunset: 04:51 PM |
Moonrise:12:04 PM Moonset: 12:03 AM Moon Phase ( First Quarter ) |
|
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