St. Regis Weather Forecast 15 Days, Weather in St. Regis Today
Current weather conditions and 15 day weather forecast for St. Regis, 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. Regis
| 18 December 2025 Thursday 0.7 ° C / 33.3°F  Clear |
Feels Like : -0.8 ° C / 30.5°F Humidity : % 67 Pressure : 1013 mb Wind Speed : 5 kmph / 3.1 miles from SSW  Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for St. Regis, MT, USA
Weather Forecast for next 15 Days for St. Regis 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. Regis, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 18 December 2025 Thursday |  Heavy rain |
0.4 ° C (32.7°F) |
4.4 ° C (39.9°F) |
2 ° C (35.7°F) |
% 80 | 83% | 0.1 | Sunrise:08:23 AM Sunset: 04:51 PM |
Moonrise:07:40 AM Moonset: 03:22 PM Moon Phase ( Waning Crescent ) |
|
| 19 December 2025 Friday | Heavy rain |
-2.4 ° C (27.6°F) |
4.8 ° C (40.6°F) |
1.3 ° C (34.3°F) |
% 84 | 85% | 0.1 | Sunrise:08:23 AM Sunset: 04:52 PM |
Moonrise:08:39 AM Moonset: 04:09 PM Moon Phase ( New Moon ) |
|
| 20 December 2025 Saturday |  Moderate or heavy snow showers |
-10 ° C (14°F) |
0.1 ° C (32.2°F) |
-3.4 ° C (25.9°F) |
% 83 | 86% | 0.1 | Sunrise:08:24 AM Sunset: 04:52 PM |
Moonrise:09:30 AM Moonset: 05:06 PM Moon Phase ( New Moon ) |
|
| 21 December 2025 Sunday |  Moderate snow |
-11 ° C (12.2°F) |
3.4 ° C (38.1°F) |
-5.5 ° C (22.2°F) |
% 87 | 61% | 0.1 | Sunrise:08:24 AM Sunset: 04:53 PM |
Moonrise:10:10 AM Moonset: 06:12 PM Moon Phase ( Waxing Crescent ) |
|
| 22 December 2025 Monday | Moderate or heavy snow showers |
-5.4 ° C (22.3°F) |
3.1 ° C (37.7°F) |
-2.7 ° C (27.2°F) |
% 94 | 76% | 0 | Sunrise:08:25 AM Sunset: 04:53 PM |
Moonrise:10:41 AM Moonset: 07:24 PM Moon Phase ( Waxing Crescent ) |
|
| 23 December 2025 Tuesday |  Light snow showers |
-5.9 ° C (21.4°F) |
3.4 ° C (38.2°F) |
-2 ° C (28.5°F) |
% 97 | 83% | 1 | Sunrise:08:25 AM Sunset: 04:54 PM |
Moonrise:11:06 AM Moonset: 08:36 PM Moon Phase ( Waxing Crescent ) |
|
| 24 December 2025 Wednesday | Moderate or heavy snow showers |
-13.6 ° C (7.5°F) |
-2 ° C (28.3°F) |
-5.1 ° C (22.8°F) |
% 90 | 67% | 1 | Sunrise:08:26 AM Sunset: 04:54 PM |
Moonrise:11:26 AM Moonset: 09:50 PM Moon Phase ( Waxing Crescent ) |
|
| 25 December 2025 Thursday |  Partly Cloudy |
-14.5 ° C (5.9°F) |
0 ° C (32.1°F) |
-9.7 ° C (14.6°F) |
% 87 | 0% | 2 | Sunrise:08:26 AM Sunset: 04:55 PM |
Moonrise:11:43 AM Moonset: 11:03 PM Moon Phase ( Waxing Crescent ) |
|
| 26 December 2025 Friday |  Mist |
-15.5 ° C (4°F) |
0.9 ° C (33.6°F) |
-10.5 ° C (13°F) |
% 91 | 0% | 1 | Sunrise:08:26 AM Sunset: 04:56 PM |
Moonrise:11:59 AM Moonset: No moonset Moon Phase ( Waxing Crescent ) |
|
| 27 December 2025 Saturday | Sunny |
-14.5 ° C (5.9°F) |
0.9 ° C (33.6°F) |
-10 ° C (14°F) |
% 90 | 0% | 2 | Sunrise:08:27 AM Sunset: 04:57 PM |
Moonrise:12:15 PM Moonset: 12:17 AM Moon Phase ( First Quarter ) |
|
| 28 December 2025 Sunday | Partly Cloudy |
-14.5 ° C (5.9°F) |
0.3 ° C (32.6°F) |
-10.1 ° C (13.9°F) |
% 93 | 0% | 2 | Sunrise:08:27 AM Sunset: 04:57 PM |
Moonrise:12:33 PM Moonset: 01:34 AM Moon Phase ( Waxing Gibbous ) |
|
| 29 December 2025 Monday | Mist |
-14.4 ° C (6°F) |
1.7 ° C (35°F) |
-9.3 ° C (15.3°F) |
% 93 | 0% | 1 | Sunrise:08:27 AM Sunset: 04:58 PM |
Moonrise:12:54 PM Moonset: 02:54 AM Moon Phase ( Waxing Gibbous ) |
|
| 30 December 2025 Tuesday | Mist |
-11.5 ° C (11.2°F) |
3.1 ° C (37.6°F) |
-7 ° C (19.3°F) |
% 93 | 0% | 1 | Sunrise:08:27 AM Sunset: 04:59 PM |
Moonrise:01:22 PM Moonset: 04:18 AM Moon Phase ( Waxing Gibbous ) |
|
| 31 December 2025 Wednesday | Mist |
-8 ° C (17.6°F) |
3.6 ° C (38.4°F) |
-4 ° C (24.7°F) |
% 96 | 0% | 1 | Sunrise:08:27 AM Sunset: 05:00 PM |
Moonrise:01:59 PM Moonset: 05:45 AM Moon Phase ( Waxing Gibbous ) |
|
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