Historical weather data, all-time temperature records, and monthly climate averages for Alpena, MI. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in Alpena sits squarely in that stubborn late-winter limbo — the average high is just 43° with lows still dipping to 28°. There's a coin-flip chance of precipitation today and a 15% shot at snow, though the date has seen wilder swings: a balmy 71° back in 1981, and a brutal 8° in 1954.
Alpena's weather history doesn't mess around — the thermometer has swung from a scorching 100° in June 1995 all the way down to -24° in February 1979, a 124-degree spread that tells you everything about Michigan's extremes. A single storm dropped 17 inches of snow on December 18, 2000, and September once delivered 3.34 inches of rain in a day.
Summer is short but real in Alpena, with the warmest week of the year (July 16–22) averaging a pleasant 78° high before temperatures slide quickly into fall. Winters are long and cold — January and February highs hover in the upper 20s, bottoming out around 26° in mid-January. If you're planning a visit, late July is also the wettest stretch, averaging 0.83 inches of rain in a week, so pack accordingly.