Chatham Seaplane Base (CYM) 15 Day Weather Forecast, Chatham United States
Current weather conditions and 15 day weather forecast for Chatham Seaplane Base in Chatham, 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 CYM
| 20 December 2025 Sat -6.9 ° C ( 19.6°F )  Partly cloudy |
Feels Like : -10.4 ° C / 13.4°F Humidity : % 53 Pressure : 1003 mb Wind Speed : 6.8 kmph / 4.3 miles from NNE 
Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 75 |
15-day weather forecast for Chatham Seaplane Base, Chatham, United States
| Date | Weather forecast | Low temperature | High temperature | Average Temperature | Humidity | Wind | Chance of rain |
|---|---|---|---|---|---|---|---|
| 19 December 2025 Fri | Partly Cloudy |
-15.3 ° C | -12.7 ° C | -14 ° C | % 82 | 9 km/h | 0% |
| 20 December 2025 Sat |  Sunny |
-15.6 ° C | -13 ° C | -14.6 ° C | % 88 | 7.6 km/h | 0% |
| 21 December 2025 Sun |  Cloudy |
-17.7 ° C | -14.9 ° C | -15.7 ° C | % 80 | 13.3 km/h | 0% |
| 22 December 2025 Mon |  Overcast |
-18.2 ° C | -16.8 ° C | -17.3 ° C | % 83 | 11.9 km/h | 0% |
| 23 December 2025 Tue | Sunny |
-17.3 ° C | -13.9 ° C | -16.3 ° C | % 90 | 8.3 km/h | 0% |
| 24 December 2025 Wed | Sunny |
-15.9 ° C | -12 ° C | -14.5 ° C | % 86 | 12.2 km/h | 0% |
| 25 December 2025 Thu | Sunny |
-14.8 ° C | -10.2 ° C | -13.1 ° C | % 83 | 11.2 km/h | 0% |
| 26 December 2025 Fri | Partly Cloudy |
-12.9 ° C | -7.3 ° C | -9.5 ° C | % 81 | 7.6 km/h | 0% |
| 27 December 2025 Sat |  Heavy snow |
-4.8 ° C | -1.4 ° C | -2.9 ° C | % 98 | 9.7 km/h | 75% |
| 28 December 2025 Sun | Heavy snow |
-7 ° C | -3.2 ° C | -4.6 ° C | % 97 | 13.3 km/h | 70% |
| 29 December 2025 Mon | Heavy snow |
-6.8 ° C | 1.1 ° C | -3.2 ° C | % 98 | 27.4 km/h | 69% |
| 30 December 2025 Tue |  Moderate or heavy snow in area with thunder |
-11.1 ° C | -2.8 ° C | -5.6 ° C | % 97 | 4.7 km/h | 73% |
| 31 December 2025 Wed |  Light snow |
-10.4 ° C | -4.6 ° C | -6.7 ° C | % 97 | 6.1 km/h | 72% |
| 01 January 2026 Thu | Heavy snow |
-7.6 ° C | -2.7 ° C | -3.5 ° C | % 93 | 19.8 km/h | 87% |
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