Historical weather data, all-time temperature records, and monthly climate averages for Olympia, WA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Olympia sits right in that classic Pacific Northwest spring zone — expect a high around 57° with a 62% chance of rain. The date has a pretty wild range in the books, from a balmy 76° back in 1966 all the way down to a bitter 25° low as recently as 2023.
Olympia doesn't mess around at the extremes — it hit a staggering 110° on June 28, 2021, and once bottomed out at -8° on New Year's Day 1979. The wettest single day on record dumped 4.82 inches in January 2009, which tells you everything you need to know about winters here.
Summer is the clear sweet spot, with average highs peaking around 78-79° in mid-to-late July — and genuinely little rain to worry about. If you're rain-averse, avoid late November, the wettest stretch of the year. Winters are mild but relentlessly grey, with January highs hovering in the mid-40s.