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
| 18 December 2025 Thu 13.2 ° C ( 55.8°F )  Light rain |
Feels Like : 10.2 ° C / 50.4°F Humidity : % 100 Pressure : 998 mb Wind Speed : 41 kmph / 25.5 miles from S 
Visibility : 3.2 km Precipitation (rainfall) : 1.97 mm Cloud (%) : 100 |
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 |
|---|---|---|---|---|---|---|---|
| 18 December 2025 Thu |  Heavy rain |
1.8 ° C | 13 ° C | 7.9 ° C | % 86 | 44.3 km/h | 89% |
| 19 December 2025 Fri |  Cloudy |
-5.6 ° C | -0.6 ° C | -2.4 ° C | % 77 | 31.3 km/h | 0% |
| 20 December 2025 Sat |  Sunny |
-2.6 ° C | 8.1 ° C | 1.3 ° C | % 78 | 30.2 km/h | 0% |
| 21 December 2025 Sun | Sunny |
-2.1 ° C | 6.1 ° C | 1.6 ° C | % 66 | 15.1 km/h | 0% |
| 22 December 2025 Mon |  Patchy rain nearby |
-0.5 ° C | 6.5 ° C | 1.7 ° C | % 60 | 17.3 km/h | 70% |
| 23 December 2025 Tue |  Overcast |
4.1 ° C | 8.4 ° C | 6.2 ° C | % 82 | 11.5 km/h | 0% |
| 24 December 2025 Wed | Patchy rain nearby |
7 ° C | 17 ° C | 12.8 ° C | % 93 | 35.6 km/h | 80% |
| 25 December 2025 Thu | Patchy rain nearby |
8.6 ° C | 19.9 ° C | 15.9 ° C | % 75 | 32.4 km/h | 73% |
| 26 December 2025 Fri | Sunny |
1.7 ° C | 8.3 ° C | 4.6 ° C | % 54 | 20.9 km/h | 0% |
| 27 December 2025 Sat |  Partly Cloudy |
-1.6 ° C | 4.4 ° C | 1.5 ° C | % 50 | 20.9 km/h | 0% |
| 28 December 2025 Sun | Sunny |
-4.9 ° C | -1.2 ° C | -2.1 ° C | % 51 | 24.5 km/h | 0% |
| 29 December 2025 Mon | Sunny |
-8.3 ° C | -2.5 ° C | -5.8 ° C | % 42 | 19.1 km/h | 0% |
| 30 December 2025 Tue | Sunny |
-7.6 ° C | -0.2 ° C | -4.6 ° C | % 39 | 14.8 km/h | 0% |
| 31 December 2025 Wed | Sunny |
-5.7 ° C | 2.2 ° C | -2.5 ° C | % 59 | 7.6 km/h | 0% |
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