Historical weather data, all-time temperature records, and monthly climate averages for Pullman, WA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Pullman runs mild but unpredictable — the average high of 53° masks a range that's swung from a balmy 75° back in 1952 to a bitter 17° in 1975. There's nearly a coin-flip chance of rain today (44%), though snow is unlikely at just 4%.
Pullman doesn't mess around at the extremes — this Palouse college town has baked at 110° and frozen at -32°, a 142-degree spread that speaks to its continental inland character. A single August storm in 1952 dumped 2.45 inches of rain, while a January day in 1966 buried the city under 13 inches of snow.
Summer is the clear sweet spot, with late July averaging a high of 86° and a comfortable stretch from June through September before temps start their autumn slide. Winters are cold and gray — January highs sit around 34°, and the wettest stretch of the year falls right over the holidays in late December. If you're visiting for good weather, aim for July or August; if you're avoiding the worst of winter, steer clear of December through February.