Historical weather data, all-time temperature records, and monthly climate averages for Loma Linda, CA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5 in Loma Linda typically brings a pleasant 74° high and 46° low — classic mild spring weather. But history shows the date has real range: a scorching 92° in 1960 and a near-freezing 33° in 1955 prove it can go either way. There's a slim 17% chance of rain today, and snow is essentially off the table.
Loma Linda's weather history is a study in extremes — from a blistering 113° on September 6, 1955, to a bone-chilling 20° on January 12, 1949, recorded in the same decade. That same January in 1949 also brought 6.5" of snow in a single day, a figure that would be almost unimaginable to anyone who knows the area today. The wettest day on record dropped 4.03" of rain on January 26, 1956, a reminder that this inland valley can get walloped when winter storms stall overhead.
Loma Linda runs hot in summer — the week of July 9–15 averages a high of 95°, and that heat holds through August and into September. If you're avoiding the heat, January through March is your window, with highs in the low-to-mid 60s and 70s. Rain is concentrated in winter, peaking the week of January 22–28 with nearly an inch of precipitation on average, then tapering off sharply by spring.