Historical weather data, all-time temperature records, and monthly climate averages for Salmon Creek, WA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5 lands right in the middle of Salmon Creek's spring transition — 131 years of data puts the average high at 59° and the low at 39°, with a coin-flip chance of rain. The range on this date is wild: it's hit 78° (back in 1906) and dipped to 27° as recently as 1975.
Salmon Creek's weather has real range — from a brutal -10° in December 1919 to a scorching 112° during the Pacific Northwest heat dome of June 2021. That same December in 1919 dropped 15.6" of snow in a single day, and an 1856 storm dumped 4.65" of rain, a record that still stands nearly 170 years later.
Summer is the sweet spot here: highs hover around 79-81° from late July through mid-August, with the warmest week of the year running August 6-12. Winters are mild but wet — the last week of December averages 1.72" of precipitation, and January highs only dip to 44°. If you're avoiding rain, aim for July and August; if you're avoiding heat, spring and fall offer comfortable highs in the 55-67° range.