Horn Lake (MS) Temperature by Month
The average annual maximum temperature in Horn Lake, Mississippi, United States of America is 22°C (72°F), with daytime highs ranging from 10°C (50°F) in January to 33°C (91°F) in August. This page covers monthly averages, day-night differences, and how Horn Lake compares to cities worldwide.
Horn Lake Monthly Temperatures
The weather in Horn Lake experiences significant differences between warm and cold seasons, with big shifts in temperature. At night, minimum temperatures range from 22°C (72°F) in August to -1°C (30°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Horn Lake by month:
From around 4 AM to 6 AM temperatures are at their lowest; by 3 PM they've climbed to their daily peak. August, the warmest month, averages 307 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Horn Lake 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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Horn Lake vs World: Temperature Compared
Horn Lake's average annual maximum temperature is 22°C (72°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.
Toronto, Canada averages 13°C (55°F) annually, with cold snowy winters balanced by genuinely warm summers.
Seoul, South Korea averages 18°C (64°F) a year, with four clear seasons, cold winters, and hot humid summers.
Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.
What Does the Temperature Feel Like in Horn Lake?
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 Horn Lake, January is the coolest month, with average highs of 10°C (50°F) and humidity around 68% — considered high. In August, the warmest month, temperatures average 33°C (91°F) with 70% 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.
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 Horn Lake's weather — including monthly rainfall, sunshine hours, and humidity — visit our Horn Lake climate page.
