High Heat Index 40.6F occurred at 12:00am

High Monthly Heat Index 61.0F

High Yearly Heat Index 61.0F

Heat Index History

The Heat Index uses the temperature and the relative humidity to deter mine how hot the air actually feels. When humidity is low, the apparent temperature will be lower than the air temperature, since perspiration evaporates rapidly to cool the body. However, when humidity is high, the air is saturated with water vapor, the apparent temperature feels higher than the actual air temperature, because perspiration evaporates more slowly.