Hartford Seasonal temperature break down - The average median temperature March through May is approximately 67°F with highs averaging at 80°F and lows averaging at 56°F. June through August has an approximate average median temperature of 80°F with highs averaging at 92°F, lows typically average at 71°F. Average median temperatures September through November average out at 69°F, high temperatures average out at 82°F and lows average at 58°F.
The average median temperature December through February is approximately 55°F with highs averaging at 66°F, lows average out at 46°F.
The average Hartford annual median temperature averages out at approximately 68°F. The coldest month in Hartford is January with a median temperature of 50°F, the average high for the month of January is 62°F with an average low of 41°F. The hottest month in Hartford is September with an approximate median temperature of 81°F, the average high for the month of September is 95°F with an average low of 69°F.