Historical weather data, all-time temperature records, and monthly climate averages for Snoqualmie, WA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Snoqualmie sits right in that shoulder season sweet spot — expect a high around 51° and a low near 35°, with a 64% chance of rain. The date's weather history spans 121 years of wide swings, from a balmy 70° back in 1915 to a bitter 24° low in 1975. Snow is unlikely but not impossible, with a 5% chance of flurries.
Snoqualmie's weather has real teeth at both ends of the thermometer — the all-time high of 101° during the historic June 2021 heat dome was matched in ferocity by a -4° low in January 1950. On the wet side, a single November day in 2006 dumped 7.33 inches of rain, and January 2022 brought a stunning 21.5 inches of snow in one day. This is a place where the weather means business.
Summer is short but pleasant, with late July peaking around 74° — the best window for hiking the area's trails and waterfalls. Winters stay mostly above freezing, with January highs averaging just 40°, though big snow events are always possible. If rain is your concern, avoid late December, which is the wettest stretch of the year at nearly 3.6 inches for the week.