St Clair County International Airport (PHN) 15 Day Weather Forecast, Port Huron United States
Current weather conditions and 15 day weather forecast for St Clair County International Airport in Port Huron, 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 PHN
| 13 September 2026 Sun 17.5 ° C ( 63.5°F )  Sunny |
Feels Like : 17.3 ° C / 63.1°F Humidity : % 81 Pressure : 1015 mb Wind Speed : 8.3 kmph / 5.1 miles from N 
Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 13 |
15-day weather forecast for St Clair County International Airport, Port Huron, United States
| Date | Weather forecast | Low temperature | High temperature | Average Temperature | Humidity | Wind | Chance of rain |
|---|---|---|---|---|---|---|---|
| 13 September 2026 Sun | Sunny |
12.5 ° C | 23.3 ° C | 18.3 ° C | % 76 | 29.5 km/h | 22% |
| 14 September 2026 Mon | Sunny |
8.9 ° C | 17.4 ° C | 13.4 ° C | % 67 | 18 km/h | 7% |
| 15 September 2026 Tue |  Overcast |
13.6 ° C | 22.6 ° C | 18 ° C | % 69 | 25.2 km/h | 49% |
| 16 September 2026 Wed | Overcast |
15.9 ° C | 21.4 ° C | 18.9 ° C | % 83 | 24.1 km/h | 39% |
| 17 September 2026 Thu | Overcast |
14.3 ° C | 19.5 ° C | 17 ° C | % 83 | 16.6 km/h | 84% |
| 18 September 2026 Fri | Overcast |
15.3 ° C | 20.4 ° C | 17.7 ° C | % 76 | 14.8 km/h | 16% |
| 19 September 2026 Sat | Overcast |
13.7 ° C | 21.1 ° C | 17.4 ° C | % 67 | 26.3 km/h | 10% |
| 20 September 2026 Sun | Overcast |
13.5 ° C | 17.9 ° C | 15.8 ° C | % 82 | 22.3 km/h | 88% |
| 21 September 2026 Mon | Overcast |
12.5 ° C | 17.9 ° C | 15.4 ° C | % 66 | 25.6 km/h | 16% |
| 22 September 2026 Tue |  Light rain shower |
11.4 ° C | 14 ° C | 12.6 ° C | % 90 | 24.5 km/h | 92% |
| 23 September 2026 Wed | Overcast |
12.2 ° C | 17.7 ° C | 14.8 ° C | % 83 | 23.8 km/h | 75% |
| 24 September 2026 Thu | Sunny |
13.6 ° C | 21.2 ° C | 17.2 ° C | % 74 | 16.6 km/h | 12% |
| 25 September 2026 Fri |  Cloudy |
15.4 ° C | 22.3 ° C | 18.4 ° C | % 81 | 15.5 km/h | 15% |
| 26 September 2026 Sat | Sunny |
17.2 ° C | 24 ° C | 19.6 ° C | % 81 | 10.1 km/h | 13% |
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