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Please enter valid temperature and humidity values.
Frost Risk Assessment
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Forecast Low
Surface Frost Temp
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Dew Point
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Frost Formation
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🌱 Plant Protection
🔧 Pipe Protection
Monitor Frost Risk From Home
Ambient Weather WS-2902C Osprey
Track overnight lows, humidity, and dew point in real time from your property so you always know when frost is coming.
Frost risk is calculated using air temperature, dew point (Magnus formula), wind speed, and sky conditions. Clear skies allow radiative cooling that can drop surface temperatures 2 to 5°F below air temperature. Based on NWS frost guidance. Not a substitute for official forecasts.