"Temperature variability" refers to the changes or fluctuations in temperature over a specific period of time. It means that the temperature can go up and down, and there can be differences or variations in temperature within a given area or region.
The role of increasing temperature variability in European summer heat waves. (realclimate.org)
We present tree ring — based reconstructions of central European summer precipitation and temperature variability over the past 2500 years. (science.sciencemag.org)
These changes led to an overall decline in long - term temperature variability, the research finds. (carbonbrief.org)