Historical weather data, all-time temperature records, and monthly climate averages for Wasco, CA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in Wasco sits right in the swing season, with an average high of 73° and low of 45° across 121 years of records. The date has seen wild swings — from a scorching 92° in 1961 to a freezing 28° back in 1918. Rain is unlikely today, with only a 12% historical chance of any precipitation.
Wasco plays by San Joaquin Valley rules: extreme heat, rare cold, and not much in between. The all-time high of 116° in July 1910 and all-time low of 12° in January 1921 show a 104-degree spread in recorded history. Even snow isn't unheard of — 3 inches fell on a single January day in 1999.
Wasco runs hot for a long stretch, with average highs cracking 100° in July and staying above 90° from June through September. If you're heat-averse, aim for January through March, when highs hover in the mid-50s to upper 60s. The wettest window is early February, though even then you're only averaging about a third of an inch per week.