Historical weather data, all-time temperature records, and monthly climate averages for Marinette, WI. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in Marinette sits right in the thick of spring's uncertainty — the average high is only 47° with a low of 29°, and history backs up the chill, with a brutal 2° recorded back in 1923. That said, a 75° day in 1921 proves the season can surprise you. There's about a 1-in-3 chance of some precipitation today, with a small but real 9% shot at snow.
Marinette's weather history is not for the faint of heart — the thermometer has swung from a scorching 108° in July 1936 all the way down to -30° in January 1982, a range of 138 degrees. A single day in May 1965 dumped 5.17 inches of rain, and a January storm in 1971 buried the city under 17 inches of snow.
Summer is the sweet spot here, with highs peaking around 82–83° in mid-July before gradually easing into a crisp fall. Winters are genuinely cold — average highs sit at just 26° during the third week of January. If you're watching the rain, plan around mid-June, which is historically Marinette's wettest stretch of the year.