Harrington (DE) Temperature by Month

Harrington, Delaware, United States of America has an average annual maximum temperature of 19°C (66°F), ranging from 7°C (45°F) in January to 31°C (88°F) in July. Below you'll find a full monthly breakdown and a comparison with cities worldwide.

Visitors to Harrington can expect significant temperature changes throughout the year. Nighttime temperatures also vary widely, ranging from 20°C (68°F) in July to -3°C (27°F) in January.

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

The minimum temperature is often recorded between 4 AM and 6 AM, while the highest temperature is usually reached at 3 PM, when the sun's heating effect is strongest.

The chart below shows the average temperature throughout the year:

Harrington's average annual maximum temperature is 19°C (66°F). To put that in context, here's how it compares to a few well-known destinations:

Athens, Greece sits at 23°C (73°F) on average, with hot dry summers and mild winters characteristic of the Mediterranean.

Zermatt, Switzerland averages just 4°C (39°F) annually due to its altitude, with very cold winters and cool summers even at its warmest.

Buenos Aires, Argentina averages 23°C (73°F) a year, with hot summers and mild winters, and seasons reversed compared to Europe.

Brisbane, Australia averages 26°C (79°F) a year, with warm winters and hot, humid summers.

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.

Seasonal temperature shifts influence more than just how warm it feels, they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.

Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Harrington this rarely lasts long on the ground.

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