Historical weather data, all-time temperature records, and monthly climate averages for Maryland Heights, MO. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Maryland Heights runs mild on paper — average high of 62°, low of 41° — but the date has a wild range baked in. Temperatures here have swung from a brutal 26° in 1944 all the way to a shirt-sleeve 91° in 1988, a 65-degree spread on the same calendar date. There's about a 1-in-3 chance of rain today, with just a whisper of a snow chance at 2%.
Maryland Heights plays in the extremes — this is a place that has seen 115° in July 1954 and -18° in January 1985, a 133-degree swing between its all-time records. The wettest single day on record dumped 8.64 inches of rain on July 26, 2022, and a March 2013 storm buried the area under 12.4 inches of snow. This is classic continental Midwest: no season comes quietly.
Summer owns Maryland Heights, with average highs hitting 90° during the peak week of July 16–22 and staying near that mark through August. If you're heat-averse, aim for late fall or early spring — January and February highs hover in the upper 30s to mid-40s. The wettest stretch runs late June into early July, averaging over an inch of precipitation per week, so pack accordingly if you're visiting for the Fourth.