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Duck, North Carolina Weather. is mild with no extreme variations in temperatures. You can expect lovely weather all year long with highs in the wintertime reaching the mid-50s and lows in the 30s or 40s. Summer temperatures rarely exceed the mid 80s.
For most breeds of ducks the eggs are incubated for 25 days at a dry bulb temperature of 37.5 C (99.5 F) and a wet bulb temperature of 29.4 â 30.0 C (85 to 86 F) then transferred to the incubator hatcher where the temperature is held at a dry bulb temperature of 36.9 C (98.5 F) and a wet bulb temperature of 34.4 C (94 F) till they hatch on day 28.