St. Ignatius Weather Forecast 15 Days, Weather in St. Ignatius Today
Current weather conditions and 15 day weather forecast for St. Ignatius, 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. Ignatius
| 16 December 2025 Tuesday 8.9 ° C / 48°F  Light rain |
Feels Like : 6.5 ° C / 43.8°F Humidity : % 73 Pressure : 1014 mb Wind Speed : 15.1 kmph / 9.4 miles from S  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 100 |
15 day weather forecast for St. Ignatius, MT, USA
Weather Forecast for next 15 Days for St. Ignatius 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. Ignatius, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 15 December 2025 Monday |  Patchy rain nearby |
6 ° C (42.8°F) |
12.7 ° C (54.9°F) |
9.3 ° C (48.7°F) |
% 56 | 82% | 0.1 | Sunrise:08:17 AM Sunset: 04:47 PM |
Moonrise:04:14 AM Moonset: 01:52 PM Moon Phase ( Waning Crescent ) |
|
| 16 December 2025 Tuesday |  Cloudy |
4.2 ° C (39.6°F) |
7.1 ° C (44.8°F) |
5.8 ° C (42.5°F) |
% 75 | 0% | 0.1 | Sunrise:08:18 AM Sunset: 04:47 PM |
Moonrise:05:23 AM Moonset: 02:13 PM Moon Phase ( Waning Crescent ) |
|
| 17 December 2025 Wednesday |  Partly Cloudy |
0.2 ° C (32.3°F) |
6.3 ° C (43.3°F) |
3.2 ° C (37.8°F) |
% 79 | 0% | 0.1 | Sunrise:08:18 AM Sunset: 04:47 PM |
Moonrise:06:30 AM Moonset: 02:42 PM Moon Phase ( Waning Crescent ) |
|
| 18 December 2025 Thursday |  Moderate or heavy snow showers |
-0.6 ° C (30.9°F) |
1.5 ° C (34.7°F) |
0.3 ° C (32.6°F) |
% 80 | 78% | 0.1 | Sunrise:08:19 AM Sunset: 04:48 PM |
Moonrise:07:36 AM Moonset: 03:18 PM Moon Phase ( Waning Crescent ) |
|
| 19 December 2025 Friday |  Moderate rain |
-5.7 ° C (21.7°F) |
4.5 ° C (40.1°F) |
1.5 ° C (34.7°F) |
% 79 | 77% | 0.1 | Sunrise:08:20 AM Sunset: 04:48 PM |
Moonrise:08:35 AM Moonset: 04:05 PM Moon Phase ( New Moon ) |
|
| 20 December 2025 Saturday |  Light freezing rain |
-6 ° C (21.2°F) |
1.5 ° C (34.7°F) |
-4.3 ° C (24.3°F) |
% 73 | 55% | 0 | Sunrise:08:20 AM Sunset: 04:49 PM |
Moonrise:09:26 AM Moonset: 05:03 PM Moon Phase ( New Moon ) |
|
| 21 December 2025 Sunday | Cloudy |
-5.9 ° C (21.4°F) |
2 ° C (35.6°F) |
-3.5 ° C (25.8°F) |
% 68 | 0% | 1 | Sunrise:08:21 AM Sunset: 04:49 PM |
Moonrise:10:06 AM Moonset: 06:09 PM Moon Phase ( Waxing Crescent ) |
|
| 22 December 2025 Monday |  Moderate snow |
-3.2 ° C (26.3°F) |
4.8 ° C (40.7°F) |
0.6 ° C (33.1°F) |
% 78 | 85% | 1 | Sunrise:08:21 AM Sunset: 04:50 PM |
Moonrise:10:37 AM Moonset: 07:20 PM Moon Phase ( Waxing Crescent ) |
|
| 23 December 2025 Tuesday |  Patchy moderate snow |
-6 ° C (21.2°F) |
2 ° C (35.7°F) |
-2.3 ° C (27.9°F) |
% 83 | 88% | 1 | Sunrise:08:22 AM Sunset: 04:50 PM |
Moonrise:11:02 AM Moonset: 08:32 PM Moon Phase ( Waxing Crescent ) |
|
| 24 December 2025 Wednesday |  Sunny |
-7.4 ° C (18.6°F) |
0.8 ° C (33.5°F) |
-5 ° C (22.9°F) |
% 79 | 0% | 2 | Sunrise:08:22 AM Sunset: 04:51 PM |
Moonrise:11:22 AM Moonset: 09:46 PM Moon Phase ( Waxing Crescent ) |
|
| 25 December 2025 Thursday | Patchy rain nearby |
-6.5 ° C (20.2°F) |
2.8 ° C (37°F) |
-2.7 ° C (27.1°F) |
% 84 | 79% | 1 | Sunrise:08:22 AM Sunset: 04:52 PM |
Moonrise:11:40 AM Moonset: 10:59 PM Moon Phase ( Waxing Crescent ) |
|
| 26 December 2025 Friday | Partly Cloudy |
-3.5 ° C (25.6°F) |
2 ° C (35.7°F) |
-1.8 ° C (28.7°F) |
% 81 | 0% | 2 | Sunrise:08:23 AM Sunset: 04:52 PM |
Moonrise:11:56 AM Moonset: No moonset Moon Phase ( Waxing Crescent ) |
|
| 27 December 2025 Saturday | Sunny |
-3.9 ° C (25°F) |
0.9 ° C (33.7°F) |
-2.4 ° C (27.7°F) |
% 76 | 0% | 2 | Sunrise:08:23 AM Sunset: 04:53 PM |
Moonrise:12:11 PM Moonset: 12:13 AM Moon Phase ( First Quarter ) |
|
| 28 December 2025 Sunday |  Overcast |
-3.6 ° C (25.5°F) |
1.9 ° C (35.4°F) |
-1.7 ° C (28.9°F) |
% 78 | 0% | 1 | Sunrise:08:23 AM Sunset: 04:54 PM |
Moonrise:12:29 PM Moonset: 01:30 AM Moon Phase ( Waxing Gibbous ) |
|
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