St. Marie Weather Forecast 15 Days, Weather in St. Marie Today
Current weather conditions and 15 day weather forecast for St. Marie, 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 St. Marie
| 14 December 2025 Sunday -15.6 ° C / 3.9°F  Mist |
Feels Like : -25.4 ° C / -13.6°F Humidity : % 83 Pressure : 1020 mb Wind Speed : 22 kmph / 13.6 miles from ESE  Visibility : 8 km Precipitation (rainfall) : 0 mm Cloud (%) : 75 |
15 day weather forecast for St. Marie, MT, USA
Weather Forecast for next 15 Days for St. Marie 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 St. Marie, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 13 December 2025 Saturday |  Moderate or heavy snow showers |
-20.6 ° C (-5.1°F) |
-18.3 ° C (-0.9°F) |
-19.3 ° C (-2.7°F) |
% 79 | 67% | 0.2 | Sunrise:07:50 AM Sunset: 04:11 PM |
Moonrise:01:29 AM Moonset: 12:46 PM Moon Phase ( Waning Crescent ) |
|
| 14 December 2025 Sunday |  Partly Cloudy |
-17.6 ° C (0.3°F) |
-2.7 ° C (27.1°F) |
-8.7 ° C (16.3°F) |
% 87 | 0% | 0.2 | Sunrise:07:51 AM Sunset: 04:11 PM |
Moonrise:02:37 AM Moonset: 01:00 PM Moon Phase ( Waning Crescent ) |
|
| 15 December 2025 Monday |  Freezing fog |
-3.7 ° C (25.3°F) |
-0.4 ° C (31.3°F) |
-1.8 ° C (28.7°F) |
% 98 | 0% | 0.2 | Sunrise:07:52 AM Sunset: 04:12 PM |
Moonrise:03:46 AM Moonset: 01:17 PM Moon Phase ( Waning Crescent ) |
|
| 16 December 2025 Tuesday | Partly Cloudy |
-7.3 ° C (18.9°F) |
0.9 ° C (33.6°F) |
-0.9 ° C (30.3°F) |
% 95 | 0% | 0.2 | Sunrise:07:52 AM Sunset: 04:12 PM |
Moonrise:04:55 AM Moonset: 01:38 PM Moon Phase ( Waning Crescent ) |
|
| 17 December 2025 Wednesday | Moderate or heavy snow showers |
-12.6 ° C (9.3°F) |
3.8 ° C (38.8°F) |
-2.5 ° C (27.6°F) |
% 79 | 65% | 0.1 | Sunrise:07:53 AM Sunset: 04:12 PM |
Moonrise:06:04 AM Moonset: 02:05 PM Moon Phase ( Waning Crescent ) |
|
| 18 December 2025 Thursday |  Cloudy |
-17.2 ° C (1.1°F) |
-13.3 ° C (8.1°F) |
-14.9 ° C (5.2°F) |
% 82 | 0% | 0 | Sunrise:07:54 AM Sunset: 04:12 PM |
Moonrise:07:11 AM Moonset: 02:40 PM Moon Phase ( Waning Crescent ) |
|
| 19 December 2025 Friday |  Light freezing rain |
-17.9 ° C (-0.3°F) |
-1.4 ° C (29.5°F) |
-9.8 ° C (14.3°F) |
% 84 | 61% | 1 | Sunrise:07:54 AM Sunset: 04:13 PM |
Moonrise:08:11 AM Moonset: 03:27 PM Moon Phase ( New Moon ) |
|
| 20 December 2025 Saturday | Light freezing rain |
-20.9 ° C (-5.6°F) |
-14.3 ° C (6.3°F) |
-17.3 ° C (0.8°F) |
% 87 | 68% | 1 | Sunrise:07:55 AM Sunset: 04:13 PM |
Moonrise:09:01 AM Moonset: 04:24 PM Moon Phase ( New Moon ) |
|
| 21 December 2025 Sunday | Partly Cloudy |
-14 ° C (6.9°F) |
-8.2 ° C (17.2°F) |
-11.1 ° C (12.1°F) |
% 89 | 0% | 2 | Sunrise:07:55 AM Sunset: 04:14 PM |
Moonrise:09:41 AM Moonset: 05:31 PM Moon Phase ( Waxing Crescent ) |
|
| 22 December 2025 Monday |  Moderate snow |
-16.7 ° C (1.9°F) |
-2.9 ° C (26.8°F) |
-7.3 ° C (18.8°F) |
% 89 | 68% | 1 | Sunrise:07:56 AM Sunset: 04:14 PM |
Moonrise:10:11 AM Moonset: 06:43 PM Moon Phase ( Waxing Crescent ) |
|
| 23 December 2025 Tuesday | Partly Cloudy |
-22.7 ° C (-8.9°F) |
-19.5 ° C (-3.1°F) |
-20.8 ° C (-5.4°F) |
% 92 | 0% | 2 | Sunrise:07:56 AM Sunset: 04:15 PM |
Moonrise:10:35 AM Moonset: 07:57 PM Moon Phase ( Waxing Crescent ) |
|
| 24 December 2025 Wednesday | Mist |
-21.7 ° C (-7.1°F) |
-13.8 ° C (7.2°F) |
-18.4 ° C (-1.1°F) |
% 95 | 0% | 1 | Sunrise:07:57 AM Sunset: 04:15 PM |
Moonrise:10:54 AM Moonset: 09:11 PM Moon Phase ( Waxing Crescent ) |
|
| 25 December 2025 Thursday | Mist |
-19.3 ° C (-2.7°F) |
-11.2 ° C (11.8°F) |
-15.1 ° C (4.7°F) |
% 95 | 0% | 1 | Sunrise:07:57 AM Sunset: 04:16 PM |
Moonrise:11:10 AM Moonset: 10:25 PM Moon Phase ( Waxing Crescent ) |
|
| 26 December 2025 Friday |  Heavy snow |
-12.9 ° C (8.8°F) |
-7.3 ° C (18.9°F) |
-9.1 ° C (15.6°F) |
% 96 | 84% | 1 | Sunrise:07:57 AM Sunset: 04:17 PM |
Moonrise:11:25 AM Moonset: 11:41 PM Moon Phase ( Waxing Crescent ) |
|
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