Sullivan County Airport (SIV) 15 Day Weather Forecast, Sullivan United States
Current weather conditions and 15 day weather forecast for Sullivan County Airport in Sullivan, 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 SIV
| 14 December 2025 Sun -15.9 ° C ( 3.4°F )  Overcast |
Feels Like : -24.5 ° C / -12°F Humidity : % 78 Pressure : 1032 mb Wind Speed : 16.6 kmph / 10.3 miles from NW 
Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15-day weather forecast for Sullivan County Airport, Sullivan, United States
| Date | Weather forecast | Low temperature | High temperature | Average Temperature | Humidity | Wind | Chance of rain |
|---|---|---|---|---|---|---|---|
| 14 December 2025 Sun |  Partly Cloudy |
-18.9 ° C | -8 ° C | -12.6 ° C | % 74 | 19.1 km/h | 0% |
| 15 December 2025 Mon |  Sunny |
-14.9 ° C | 0.5 ° C | -9 ° C | % 76 | 22.7 km/h | 0% |
| 16 December 2025 Tue | Partly Cloudy |
-8.5 ° C | 2.1 ° C | -3.5 ° C | % 75 | 23 km/h | 0% |
| 17 December 2025 Wed | Partly Cloudy |
1 ° C | 7.4 ° C | 4.2 ° C | % 93 | 22.7 km/h | 0% |
| 18 December 2025 Thu |  Patchy rain nearby |
7 ° C | 14.1 ° C | 9.9 ° C | % 84 | 36.7 km/h | 84% |
| 19 December 2025 Fri | Sunny |
-2.7 ° C | 3.8 ° C | 0.4 ° C | % 53 | 30.2 km/h | 0% |
| 20 December 2025 Sat | Patchy rain nearby |
1.7 ° C | 17.1 ° C | 10.4 ° C | % 80 | 35.3 km/h | 79% |
| 21 December 2025 Sun | Partly Cloudy |
-1.2 ° C | 4.5 ° C | 1.7 ° C | % 65 | 26.6 km/h | 0% |
| 22 December 2025 Mon | Overcast |
-2.3 ° C | 6.1 ° C | 2.1 ° C | % 68 | 20.9 km/h | 0% |
| 23 December 2025 Tue | Partly Cloudy |
6.5 ° C | 12.2 ° C | 9.2 ° C | % 74 | 24.5 km/h | 0% |
| 24 December 2025 Wed | Patchy rain nearby |
3.2 ° C | 4.3 ° C | 4.1 ° C | % 68 | 15.5 km/h | 85% |
| 25 December 2025 Thu | Patchy rain nearby |
3.1 ° C | 7.2 ° C | 4.6 ° C | % 71 | 16.2 km/h | 89% |
| 26 December 2025 Fri |  Moderate rain |
3.9 ° C | 9.9 ° C | 7.2 ° C | % 95 | 25.6 km/h | 88% |
| 27 December 2025 Sat | Overcast |
1.2 ° C | 2.8 ° C | 2.7 ° C | % 83 | 20.2 km/h | 0% |
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