Horncastle Temperature by Month
Horncastle in Lincolnshire, United Kingdom sees significant seasonal temperature differences, with daytime highs between 8°C (46°F) in January and 22°C (72°F) in July, averaging 15°C (59°F) annually. Explore the full monthly breakdown below.
Horncastle Monthly Temperatures
Depending on the time of the year, temperatures range from warm to cold in Horncastle. Nighttime lows follow the same pattern, ranging from 13°C (55°F) to 2°C (36°F).
The chart below illustrates the average maximum day and minimum night temperatures in Horncastle by month:
Daily lows are most common between 4 AM and 6 AM. By 3 PM temperatures reach their daily high, driven by peak solar heating. July, the warmest month of the year, receives 196 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Horncastle vs the United Kingdom
The map below shows the annual temperature across the United Kingdom. You can also select individual months if you want to compare a specific time of year.
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Horncastle vs World: Temperature Compared
Horncastle's average annual maximum temperature is 15°C (59°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.
Glasgow, Scotland averages 13°C (55°F) a year — mild but often grey, with cold winters and rarely hot summers.
New York City, USA averages 17°C (63°F) a year, with hot humid summers and cold winters that bring regular snowfall.
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.
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 Horncastle this rarely lasts long on the ground.
For more on Horncastle's weather — including monthly rainfall, sunshine hours, and humidity — visit our Horncastle climate page.
