Historical weather data, all-time temperature records, and monthly climate averages for Bellevue, WA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5 in Bellevue runs cool and damp — expect a high near 57° and a coin-flip chance of rain. The date has swung from a balmy 74° back in 2007 to a chilly 33° low as recently as 2021, so don't put the layers away just yet.
Bellevue's weather has real extremes lurking beneath its mild reputation. The all-time high hit a staggering 107° on June 28, 2021, while the coldest recorded day bottomed out at 10° in December 1990 — the same month that also delivered 8 inches of snow in a single day.
Late July through early August is peak Bellevue, with average highs reaching 79° during the warmest week of the year. If you're avoiding rain, steer clear of mid-to-late November — the wettest stretch averages 1.58 inches in a single week. Winter is grey and cool but rarely brutal, with December highs hovering around 46°.