Historical weather data, all-time temperature records, and monthly climate averages for Port Huron, MI. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Port Huron sits right on the edge of winter's exit, with an average high of 49° and a low that still flirts with freezing at 32°. The date has seen wild swings over 89 years of records — from a balmy 74° in 2010 to a brutal 13° low back in 1995. There's a 39% chance of precipitation today, though snow is unlikely at just 6%.
Port Huron's weather history spans nearly a century of Lake Huron-influenced extremes, from a scorching 103° in July 1936 to a bone-chilling -19° in January 1994 — a 122-degree spread. The wettest single day on record dumped nearly 4 inches of rain on September 7, 1996, while a March 1934 storm buried the city under 14.3 inches of snow in one shot.
Port Huron peaks in warmth during the third week of July, when average highs reach 83°, then bottoms out in mid-January at just 30°. If you're chasing dry weather, avoid late June — it's the wettest stretch of the year, averaging nearly an inch of precipitation per week. Spring and fall offer mild shoulder seasons, though both come with unpredictable swings.