Historical weather data, all-time temperature records, and monthly climate averages for Deer Park, TX. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in Deer Park typically lands in that sweet spring window — average highs of 76° with a 27% chance of rain. This date has seen a 36-degree swing in recorded history, from a chilly 48° low back in 1951 to a toasty 84° high just this year in 2025.
Deer Park plays the full range of Gulf Coast extremes, from a scorching 104° in July 1954 to a bone-chilling 15° in February 1951. The wettest single day on record dumped over 6 inches of rain in November 1961 — a reminder that this Houston-area suburb is no stranger to serious water.
Summers here are long and sweltering, with late July through early August averaging highs of 92-93° — the peak of the heat. If you prefer milder conditions, January and February are your best bet, with highs in the low-to-mid 60s. Spring is beautiful but wet; the second week of April is statistically the rainiest stretch of the year.