Union Pier (MI) Temperature by Month

The average annual maximum temperature in Union Pier, Michigan, United States of America is 14°C (57°F), with daytime highs ranging from 0°C (32°F) in January to 27°C (81°F) in July. This page covers monthly averages, day-night differences, and how Union Pier compares to cities worldwide.

The climate in Union Pier is known for significant temperature differences throughout the year. At night, this contrast is just as clear, with lows ranging from 18°C (64°F) in July to -7°C (19°F) in January.

The chart below illustrates the average maximum day and minimum night temperatures in Union Pier by month:

Temperatures tend to bottom out between 4 AM and 6 AM, then climb to their daily peak around 3 PM. July, the warmest month, sees 330 hours of sunshine.

The chart below shows the average temperature throughout the year:

Union Pier's average annual maximum temperature is 14°C (57°F). To put that in context, here's how it compares to a few well-known destinations:

Lisbon, Portugal averages 21°C (70°F) annually, warm summers, mild winters, and rain mainly in the cooler months.

Queenstown, New Zealand averages 10°C (50°F) annually, remember seasons are flipped, so its coldest months fall in June and July.

Beijing, China averages 20°C (68°F) annually, but with big seasonal swings, very cold winters and hot summers.

Adelaide, Australia averages 21°C (70°F) a year, with warm summers, mild winters, and relatively low rainfall year-round.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

Whether a city sits on the coast or deep inland makes a significant difference to its climate. Coastal areas tend to have more stable temperatures year-round, large bodies of water absorb heat slowly in summer and release it gradually in winter, keeping extremes in check. Cities far from the sea don't benefit from that buffer, which is why continental climates tend to have hotter summers and colder winters than their coastal counterparts at the same latitude.

For more on Union Pier's weather, including monthly rainfall, sunshine hours, and humidity, visit our Union Pier climate page.