Climate Change

Climate projections indicate that Orangeville is going to experience warming temperatures, increased variability in precipitation and more frequent extreme weather events.

Local Climate Projections


  • An annual increase in mean temperature of approximately 1.5 degrees Celsius by the 2020s, 3 degrees by the 2050s, and 5.5 degrees by the 2080s
  • Greatest warming will occur in the summer
  • Heatwaves will become more frequent and prolonged
  • Minimum winter temperatures will increase significantly
  • Growing seasons will be lengthened in the shoulder seasons


  • Increase in total precipitation during the fall, spring and winter
  • Decrease in total precipitation in the summer
  • The Town may experience 9 percent more annual precipitation by the 2050s and 12.5 percent by the 2080s
  • Increased potential for freezing rain events
  • Increase in the intensity, duration and frequency of extreme rainfall events

(Source: Ontario Climate Data Portal)

Adaptation vs. Mitigation

Key terminology used when discussing climate change includes "adaptation" and "mitigation".

Adaptation is defined as adjustments in human and natural systems, 

 in response to actual or expected climate stimuli or their effects, that moderate harm or exploit beneficial opportunities (IPCC, 2001).   

Mitigation is defined as an anthropogenic intervention to reduce the sources or enhance the sinks of greenhouse gases (IPCC, 2001). 

The Town of Orangeville recognizes the threats that predicted changes to the local climate pose, both to the community and to Town operations, and is committed to incorporating both climate mitigation and climate adaptation measures in its business processes.