Historical weather data, all-time temperature records, and monthly climate averages for Barstow Heights, CA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in Barstow Heights is a mild transition day, with highs averaging 75° and lows around 47° across 45 years of records. The date has swung dramatically though — from a scorching 90° in 2000 down to a near-freezing 34° as recently as 2023. Rain is essentially a non-event, with just a 2% chance of any precipitation.
Barstow Heights plays in extremes — the all-time high of 120° in July 1996 puts it among the hottest places on earth on its worst days, while a bone-chilling 8° in December 1990 proves the desert cold is real. Even rainfall makes a statement when it shows up, with a single September day in 1997 dropping 2.25 inches, and a rare December snowstorm in 2008 piling up 6.5 inches.
Summer here is not for the faint of heart — the warmest week of the year averages a high of 103°, and temperatures stay in the 90s from June through September. If you're heat-averse, aim for December or January, when highs drop to the upper 50s and low 60s. The wettest stretch is early January, though even then you're averaging just 0.27 inches for the week.