Normal Temperature Maps

A common misconception is that a climate "normal" describes the "typical" state of the atmosphere. "Normal" is simply a 30-year arithmetic mean, computed once per decade. The temperature normals data presented in the maps below summarize the observation period 1971-2000. These values are benchmarks to be used throughout this decade as a measure of central tendency. Normals data can be useful in placing ongoing weather conditions in historical context. Additionally, normals data offer an excellent tool for describing climate variability across space.

Clicking on a map below will bring the user to a page displaying larger versions of mean temperature normals maps. Maximum and minimum temperature normal maps are also provided for each month.

Normal Winter Mean Temperature Winter (Dec-Feb) Normal December Mean Temperature December Normal January Mean Temperature January Normal February Mean Temperature February
Normal Spring Mean Temperature Spring (Mar-May) Normal March Mean Temperature March Normal April Mean Temperature April Normal May Mean Temperature May
Normal Summer Mean Temperature Summer (Jun-Aug) Normal June Mean Temperature June Normal July Mean Temperature July Normal August Mean Temperature August
Normal Autumn Mean Temperature Autumn (Sep-Nov) Normal September Mean Temperature September Normal October Mean Temperature October Normal November Mean Temperature November
Normal Annual Mean Temperature Annual


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Last modified: June 11, 2003