During the hot, humid summer months, meteorologists often discuss the heat index instead of the actual air temperature. But how is the heat index calculated, and why is it more important than the ...

How to Calculate Heating Degree Day (HDD) There are several ways to calculate HDD. The more detailed a record of temperature data, the more accurate the HDD calculation.

Satellite-derived Normalized Difference Vegetation Index (NDVI), a proxy of vegetation productivity, is known to be correlated with temperature in northern ecosystems. This relationship, however ...

The charts below show how observed highs and lows compare with average temperatures taken from data gathered from 1991 to 2020, which forecasters use to define climate normals that describe a ...