Historical weather data, all-time temperature records, and monthly climate averages for Glen Allen, VA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Glen Allen tends to be a pleasant spring day, with average highs around 67° and lows dipping to 41°. The date has seen some wild swings though — temperatures have ranged from a balmy 89° back in 2010 to a teeth-chattering 28° in 2016. There's about a 1-in-4 chance of rain, so a light jacket isn't a bad idea.
Glen Allen doesn't mess around when it comes to extremes — the mercury has soared to 105° in July 2010 and crashed to -5° in January 2000, a 110-degree spread that tells you this is a place with real seasons. The wettest single day on record dropped an extraordinary 10.61 inches on August 30, 2004, the kind of deluge that rewrites the rulebook.
Glen Allen is at its best in spring and fall, with April and October both averaging highs around 71° before the summer heat takes over — July peaks at 89° during the warmest week of the year around July 16-22. If you're heat-averse, January is the coolest stretch with highs only reaching 45°. August is the wettest month, so plan outdoor activities accordingly.