Photo 7: Prune suckers from the base of apple trees anytime of the year. David Zlesak. Finally, pruning is done when the tree is dormant, in late winter or early spring when risk of severe cold damage is past. March and April are the best months to prune.
Typical pacific north-west weather does not apply to the San Juan Islands! The weather in the San Juan Islands remains pleasantly mild all throughout the year. Summer is rarely above 80Âº. Winter brings average lows of 35Âº to 40 Âº. rarely freezing. Snow is very rare in the San Juan Islands.
The tables give the normals for maximum and minimum temperatures based on weather data collected from 1981 to 2010 by the US National Climatic Data Center. You can jump to a separate table for each region of the state: Olympic Peninsula & West Coast, San Juan Islands & Puget Sound, Cascade Mountains and Eastern Washington. Average September temperatures.