Radcliff (KY) Temperature by Month
The average annual maximum temperature in Radcliff, Kentucky, United States of America is 19°C (66°F), with daytime highs ranging from 6°C (43°F) in January to 30°C (86°F) in August. This page covers monthly averages, day-night differences, and how Radcliff compares to cities worldwide.
Radcliff Monthly Temperatures
The climate in Radcliff is dynamic, ranging widely from chilly in winter to very warm in summer. Nights are significantly colder, with lows dropping from 19°C (66°F) in August to -5°C (23°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Radcliff by month:
The coldest point of the day usually falls between 4 AM and 6 AM, with temperatures peaking around 3 PM. August, the city's warmest month, gets 275 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Radcliff 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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Radcliff vs World: Temperature Compared
Radcliff'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.
Toronto, Canada averages 13°C (55°F) annually, with cold snowy winters balanced by genuinely warm summers.
Shanghai, China averages 21°C (70°F) a year, with warm summers, mild winters, and a noticeable spring and autumn.
Perth, Australia averages 25°C (77°F) annually, with a classic Mediterranean climate — hot dry summers and mild wet winters.
What Does the Temperature Feel Like in Radcliff?
Temperature alone doesn't tell the whole story — humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.
In the cooler months, when temperatures drop below 10°C, high humidity makes the cold feel more cutting than it would in dry conditions.
In Radcliff, January is the coolest month, with average highs of 6°C (43°F) and humidity around 67% — considered high. In August, the warmest month, temperatures average 30°C (86°F) with 71% humidity — conditions that feel high. For a full picture, see our humidity page.
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 Radcliff this rarely lasts long on the ground.
For more on Radcliff's weather — including monthly rainfall, sunshine hours, and humidity — visit our Radcliff climate page.
