Garrison Weather Forecast 15 Days, Weather in Garrison Today
Current weather conditions and 15 day weather forecast for Garrison, 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 Garrison
| 21 March 2026 Saturday 0.6 ° C / 33.1°F  Clear |
Feels Like : -1.8 ° C / 28.8°F Humidity : % 75 Pressure : 1016 mb Wind Speed : 7.2 kmph / 4.5 miles from WNW  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for Garrison, MT, USA
Weather Forecast for next 15 Days for Garrison 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 Garrison, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 21 March 2026 Saturday |  Partly Cloudy |
-0.9 ° C (30.4°F) |
7.8 ° C (46°F) |
4.4 ° C (39.9°F) |
% 79 | 0% | 0.6 | Sunrise:07:33 AM Sunset: 07:46 PM |
Moonrise:08:24 AM Moonset: 11:45 PM Moon Phase ( Waxing Crescent ) |
|
| 22 March 2026 Sunday | Partly Cloudy |
-3.3 ° C (26.1°F) |
7.4 ° C (45.3°F) |
1.7 ° C (35.1°F) |
% 60 | 0% | 1.1 | Sunrise:07:31 AM Sunset: 07:48 PM |
Moonrise:08:52 AM Moonset: No moonset Moon Phase ( Waxing Crescent ) |
|
| 23 March 2026 Monday | Partly Cloudy |
1 ° C (33.8°F) |
10.6 ° C (51.1°F) |
5.2 ° C (41.4°F) |
% 39 | 0% | 1.1 | Sunrise:07:29 AM Sunset: 07:49 PM |
Moonrise:09:29 AM Moonset: 01:09 AM Moon Phase ( Waxing Crescent ) |
|
| 24 March 2026 Tuesday | Partly Cloudy |
2.1 ° C (35.8°F) |
13.4 ° C (56.1°F) |
7 ° C (44.6°F) |
% 53 | 0% | 1.2 | Sunrise:07:27 AM Sunset: 07:50 PM |
Moonrise:10:18 AM Moonset: 02:27 AM Moon Phase ( Waxing Crescent ) |
|
| 25 March 2026 Wednesday |  Patchy rain nearby |
-3.7 ° C (25.3°F) |
6.9 ° C (44.3°F) |
4.2 ° C (39.5°F) |
% 67 | 88% | 0 | Sunrise:07:25 AM Sunset: 07:52 PM |
Moonrise:11:22 AM Moonset: 03:35 AM Moon Phase ( First Quarter ) |
|
| 26 March 2026 Thursday |  Light freezing rain |
-5 ° C (23.1°F) |
3.8 ° C (38.9°F) |
-1.6 ° C (29.2°F) |
% 46 | 77% | 1 | Sunrise:07:23 AM Sunset: 07:53 PM |
Moonrise:12:35 PM Moonset: 04:27 AM Moon Phase ( Waxing Gibbous ) |
|
| 27 March 2026 Friday | Sunny |
-2.1 ° C (28.3°F) |
11.6 ° C (52.9°F) |
3.7 ° C (38.6°F) |
% 36 | 0% | 2 | Sunrise:07:21 AM Sunset: 07:54 PM |
Moonrise:01:54 PM Moonset: 05:06 AM Moon Phase ( Waxing Gibbous ) |
|
| 28 March 2026 Saturday |  Patchy moderate snow |
-2.2 ° C (28.1°F) |
3.8 ° C (38.8°F) |
0.5 ° C (32.9°F) |
% 62 | 72% | 1 | Sunrise:07:19 AM Sunset: 07:56 PM |
Moonrise:03:13 PM Moonset: 05:36 AM Moon Phase ( Waxing Gibbous ) |
|
| 29 March 2026 Sunday |  Light snow |
-4.8 ° C (23.4°F) |
0.4 ° C (32.7°F) |
-2.5 ° C (27.5°F) |
% 56 | 60% | 1 | Sunrise:07:17 AM Sunset: 07:57 PM |
Moonrise:04:29 PM Moonset: 05:58 AM Moon Phase ( Waxing Gibbous ) |
|
| 30 March 2026 Monday |  Patchy light snow |
-5.8 ° C (21.6°F) |
1.3 ° C (34.3°F) |
-2.6 ° C (27.3°F) |
% 58 | 65% | 1 | Sunrise:07:15 AM Sunset: 07:58 PM |
Moonrise:05:43 PM Moonset: 06:17 AM Moon Phase ( Waxing Gibbous ) |
|
| 31 March 2026 Tuesday | Partly Cloudy |
-4.1 ° C (24.6°F) |
6.1 ° C (42.9°F) |
0.7 ° C (33.3°F) |
% 54 | 0% | 2 | Sunrise:07:13 AM Sunset: 08:00 PM |
Moonrise:06:53 PM Moonset: 06:33 AM Moon Phase ( Waxing Gibbous ) |
|
| 01 April 2026 Wednesday |  Moderate or heavy snow showers |
-2.2 ° C (28.1°F) |
4.8 ° C (40.6°F) |
0.2 ° C (32.3°F) |
% 86 | 89% | 1 | Sunrise:07:11 AM Sunset: 08:01 PM |
Moonrise:08:03 PM Moonset: 06:49 AM Moon Phase ( Waxing Gibbous ) |
|
| 02 April 2026 Thursday | Moderate or heavy snow showers |
-2.6 ° C (27.3°F) |
1.5 ° C (34.8°F) |
-0.9 ° C (30.4°F) |
% 89 | 89% | 1 | Sunrise:07:09 AM Sunset: 08:02 PM |
Moonrise:09:13 PM Moonset: 07:06 AM Moon Phase ( Full Moon ) |
|
| 03 April 2026 Friday | Light snow |
-5.8 ° C (21.6°F) |
2.8 ° C (37°F) |
-1.8 ° C (28.8°F) |
% 81 | 89% | 1 | Sunrise:07:07 AM Sunset: 08:04 PM |
Moonrise:10:22 PM Moonset: 07:24 AM Moon Phase ( Waning Gibbous ) |
|
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