Lisbon Seasonal temperature break down - The average median temperature March through May is approximately 62°F with highs averaging at 71°F and lows averaging at 55°F. June through August has an approximate average median temperature of 70°F with highs averaging at 79°F, lows typically average at 62°F. Average median temperatures September through November average out at 65°F, high temperatures average out at 72°F and lows average at 59°F.
The average median temperature December through February is approximately 54°F with highs averaging at 61°F, lows average out at 49°F.
The average Lisbon annual median temperature averages out at approximately 63°F. The coldest month in Lisbon is January with a median temperature of 52°F, the average high for the month of January is 59°F with an average low of 47°F. The hottest month in Lisbon is August with an approximate median temperature of 72°F, the average high for the month of August is 83°F with an average low of 65°F.