Falmouth Seasonal temperature break down - The average median temperature March through May is approximately 78°F with highs averaging at 84°F and lows averaging at 73°F. June through August has an approximate average median temperature of 82°F with highs averaging at 87°F, lows typically average at 77°F. Average median temperatures September through November average out at 82°F, high temperatures average out at 88°F and lows average at 76°F.
The average median temperature December through February is approximately 77°F with highs averaging at 83°F, lows average out at 72°F.
The average Falmouth annual median temperature averages out at approximately 80°F. The coldest month in Falmouth is January with a median temperature of 76°F, the average high for the month of January is 82°F with an average low of 71.4°F. The hottest month in Falmouth is September with an approximate median temperature of 82°F, the average high for the month of September is 89°F with an average low of 76°F.