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January Weather in Horncastle, United Kingdom

Last updated: August 27, 2025

In January, the average temperature in Horncastle, United Kingdom hovers around 5°C (40°F). Expect a chilly minimum of -4°C (26°F) and a warmer peak at 15°C (59°F). During this time, precipitation averages 44 mm (1.7 in) across 8 days, contributing to a notably high average humidity of 89%.

January Temperature in Horncastle

In January in Horncastle, the average temperature is 5°C (40°F). Maximum temperatures can reach 15°C (59°F), while minimum temperatures can plummet to as low as -4°C (26°F). Be sure to pack layers to stay comfortable while exploring the area!

January Weather in Horncastle: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Horncastle, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Horncastle, January typically has an average temperature of 5°C (40°F), with highs reaching up to 15°C (59°F) and lows dropping to around -4°C (26°F).
JanFebMarAprMayJunJulAugSepOctNovDec404245485359636358534642
Data source: Temperature data for Horncastle generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Horncastle

In Horncastle in January, the total precipitation amount is 44 mm (1.7 in) over a duration of 8 days.

January Precipitation Trends in Horncastle

The chart displays monthly precipitation patterns in Horncastle, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Horncastle, January typically receives around 44 mm (1.7 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec446057337280778164786071
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Horncastle

In Horncastle in January, humidity is 89%. With an average temperature of 5°C (40°F), this humidity feels like a chilly, damp blanket enveloping you, making outdoor activities less enjoyable and causing each breath to feel heavier, which can be quite uninviting for travelers.

January Average Humidity in Horncastle

This chart illustrates the average monthly humidity levels in Horncastle, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Horncastle is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%87%86%85%83%83%80%78%84%88%89%88%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Horncastle

In Horncastle in January, the maximum UV index is 1, which corresponds to a low Exposure Category. This means you have a time to burn of 45 minutes. For more details, you can check the Hourly UV Index in Horncastle.

Maximum UV Index Levels in Horncastle for January

The chart shows the monthly maximum UV Index (UVI) for Horncastle in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Horncastle typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875321
Data source: Horncastle January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How January Weather in Horncastle Compares to Other Months

Weather in Horncastle varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Horncastle, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Horncastle, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (40°F)44 mm (1.7 inches)89%low
February Weather6°C (42°F)60 mm (2.3 inches)87%low
March Weather7°C (45°F)57 mm (2.2 inches)86%moderate
April Weather9°C (48°F)33 mm (1.3 inches)85%moderate
May Weather12°C (54°F)72 mm (2.8 inches)83%high
June Weather15°C (60°F)80 mm (3.2 inches)83%very high
July Weather17°C (64°F)77 mm (3.0 inches)79%very high
August Weather17°C (63°F)80 mm (3.2 inches)78%high
September Weather15°C (58°F)64 mm (2.5 inches)84%moderate
October Weather11°C (53°F)78 mm (3.1 inches)88%moderate
November Weather8°C (46°F)60 mm (2.3 inches)89%low
December Weather5°C (42°F)71 mm (2.8 inches)88%low

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