Historical weather data, all-time temperature records, and monthly climate averages for Grandview, WA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5 in Grandview typically lands right in that comfortable spring sweet spot — expect a high around 63° and a low near 36°. Historically, this date has swung wildly, from a warm 79° back in 1960 to a bitter 21° low in 1928. Rain is unlikely today, with only an 18% chance of any precipitation and essentially no shot at snow.
Grandview plays for keeps when it comes to extremes — the all-time high of 114° on June 30, 2021 puts it firmly in desert heat territory, while the -20° low from January 1930 shows winters can turn brutal. That's a staggering 134-degree range between the coldest and hottest days on record.
Grandview runs hot and dry through the summer, peaking in late July with average highs of 91°, then cools sharply to a January average of just 37°. If you're chasing the best weather, May through September is your window. Winter is the wettest stretch, though even the rainiest week of the year — late December — averages only 0.34 inches.