Historical weather data, all-time temperature records, and monthly climate averages for Highland, CA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5 in Highland runs warm and dry — expect a high near 74° and a low around 46°, with only a 17% chance of rain. This date has seen some wild swings, though, from a scorching 92° back in 1960 to a near-freezing 33° in 1955.
Highland is no stranger to extremes — the thermometer has hit 113° in September and plunged to 20° in January, both back in the station's early years. Its wettest single day on record dumped 4.03 inches of rain, and a rare January snowstorm in 1949 left 6.5 inches on the ground.
Highland follows a classic inland Southern California rhythm: scorching summers with highs near 95° in July and August, and mild winters that rarely dip below the low 60s. If you're dodging rain, avoid late January — it's the wettest stretch of the year, averaging nearly an inch of precipitation in a single week. Spring and fall offer the sweet spot, with comfortable highs in the 70s and 80s.