Historical weather data, all-time temperature records, and monthly climate averages for Fillmore, CA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Fillmore is a mild, dry kind of day — historically speaking. Highs average 68° with lows around 47°, and there's only a 14% chance of rain. The date has swung between 82° (2022) and a chilly 38° low (2023), so pack a layer just in case.
Fillmore's weather has some real extremes hiding behind its mild reputation. The all-time high hit a scorching 108° on October 9, 2015 — a reminder that fall can bite — while the coldest ever was 25° back in January 1963. The wettest single day on record dumped 4.91 inches in March 2011.
Fillmore is remarkably consistent year-round, with monthly average highs ranging only from 65° in late December to 79° in early September. If you want the warmest weather, aim for late summer through early fall; if you want to dodge rain, avoid late January, which averages the most precipitation at 0.81 inches per week. Honestly, there's rarely a bad time to visit.