Saint Mary's Airport (KSM) 15 Day Weather Forecast, Saint Mary's United States
Current weather conditions and 15 day weather forecast for Saint Mary's Airport in Saint Mary's, United States including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain, wind speed, cloud, pressure, and UV index.
Current weather conditions at KSM
| 21 December 2025 Sun -15.7 ° C ( 3.7°F )  Light snow |
Feels Like : -22.4 ° C / -8.3°F Humidity : % 84 Pressure : 1026 mb Wind Speed : 10.8 kmph / 6.7 miles from ESE 
Visibility : 14 km Precipitation (rainfall) : 0.35 mm Cloud (%) : 100 |
15-day weather forecast for Saint Mary's Airport, Saint Mary's, United States
| Date | Weather forecast | Low temperature | High temperature | Average Temperature | Humidity | Wind | Chance of rain |
|---|---|---|---|---|---|---|---|
| 21 December 2025 Sun |  Heavy snow |
-22.1 ° C | -16.9 ° C | -18.8 ° C | % 94 | 16.6 km/h | 85% |
| 22 December 2025 Mon |  Blizzard |
-17 ° C | -8.7 ° C | -12 ° C | % 95 | 36.7 km/h | 72% |
| 23 December 2025 Tue |  Light freezing rain |
-7.5 ° C | 0.9 ° C | -2.4 ° C | % 94 | 27.7 km/h | 71% |
| 24 December 2025 Wed |  Moderate snow |
-5.2 ° C | -0.9 ° C | -3.2 ° C | % 96 | 35.6 km/h | 88% |
| 25 December 2025 Thu |  Moderate or heavy snow showers |
-25.5 ° C | -15.7 ° C | -13.5 ° C | % 97 | 38.2 km/h | 83% |
| 26 December 2025 Fri |  Cloudy |
-24.6 ° C | -22.7 ° C | -23.4 ° C | % 96 | 28.1 km/h | 0% |
| 27 December 2025 Sat |  Sunny |
-28.8 ° C | -27.2 ° C | -27.1 ° C | % 91 | 21.2 km/h | 0% |
| 28 December 2025 Sun | Sunny |
-28.1 ° C | -24 ° C | -26.3 ° C | % 79 | 14.4 km/h | 0% |
| 29 December 2025 Mon | Light snow |
-24.1 ° C | -15.4 ° C | -17.9 ° C | % 86 | 13.7 km/h | 89% |
| 30 December 2025 Tue |  Mist |
-16.2 ° C | -12.3 ° C | -13.3 ° C | % 96 | 8.6 km/h | 81% |
| 31 December 2025 Wed |  Overcast |
-22.5 ° C | -12.1 ° C | -14.9 ° C | % 93 | 15.1 km/h | 0% |
| 01 January 2026 Thu |  Freezing fog |
-26.6 ° C | -20.3 ° C | -23 ° C | % 99 | 13 km/h | 0% |
| 02 January 2026 Fri |  Partly Cloudy |
-27.8 ° C | -20.8 ° C | -24.9 ° C | % 90 | 11.5 km/h | 0% |
| 03 January 2026 Sat | Partly Cloudy |
-26.5 ° C | -20.3 ° C | -23.1 ° C | % 82 | 13.3 km/h | 0% |
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