Climate According to the Köppen climate classification system, Bristol has a humid subtropical climate (Cfa). Cfa climates are characterized by all months having an average mean temperature > , at least four months with an average mean temperature ≥ , at least one month with an average mean temperature ≥ and no significant precipitation difference between seasons. Although most summer days are slightly humid in Bristol, episodes of heat and high humidity can occur with heat index values > . Since 1981, the highest air temperature was on 07/06/2010, and the highest daily average mean dew point was on 08/13/2016. The average wettest month is July which corresponds with the annual peak in thunderstorm activity. Since 1981, the wettest calendar day was on 08/27/2011.
Climate According to the Köppen climate classification system, Bristol has a humid subtropical climate (Cfa). Cfa climates are characterized by all months having an average mean temperature > , at least four months with an average mean temperature ≥ , at least one month with an average mean temperature ≥ and no significant precipitation difference between seasons. Although most summer days are slightly humid in Bristol, episodes of heat and high humidity can occur with heat index values > . Since 1981, the highest air temperature was on 07/06/2010 and the highest daily average mean dew point was on 08/13/2016. The average wettest month is July which corresponds with the annual peak in thunderstorm activity. Since 1981, the wettest calendar day was on 08/27/2011.