Port Washington (WI) Temperature by Month
Port Washington in Wisconsin, United States of America sees significant seasonal temperature differences, with daytime highs between -2°C (28°F) in February and 26°C (79°F) in July, averaging 13°C (55°F) annually. Explore the full monthly breakdown below.
Port Washington Monthly Temperatures
With significant temperature fluctuations, Port Washington enjoys distinct seasons year-round. Nighttime lows range from 16°C (61°F) in July to -10°C (14°F) in February.
The chart below illustrates the average maximum day and minimum night temperatures in Port Washington by month:
From around 4 AM to 6 AM temperatures are at their lowest; by 3 PM they've climbed to their daily peak. July, the warmest month, averages 330 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Port Washington vs the United States of America
The map below shows the annual temperature across the United States of America. You can also select individual months if you want to compare a specific time of year.
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Port Washington vs World: Temperature Compared
Port Washington's average annual maximum temperature is 13°C (55°F). To put that in context, here's how it compares to a few well-known destinations:
Seville, Spain averages 23°C (73°F) a year — one of the warmer cities in Western Europe, with long hot summers.
Queenstown, New Zealand averages 10°C (50°F) annually — remember seasons are flipped, so its coldest months fall in June and July.
Boston, USA averages 16°C (61°F) annually, with four distinct seasons and cold winters that rival northern Europe.
Perth, Australia averages 25°C (77°F) annually, with a classic Mediterranean climate — hot dry summers and mild wet winters.
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.
For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained — so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.
For more on Port Washington's weather — including monthly rainfall, sunshine hours, and humidity — visit our Port Washington climate page.
