Grantham Climate by Month
The temperature in Grantham can vary greatly throughout the year.
The temperatures shift from warm
to cold.
It receives a reasonable amount of rain/snowfall.
Now, let’s break down all the climate details for a clearer picture.
Average day and night temperature
Depending on the time of the year, temperatures range from comfortable to chilly in Grantham. Average daytime temperatures reach a comfortable 23°C in July. In February, the coolest month of the year, temperatures drop to a chilly 8°C. At night, expect cooler temperatures, averaging 2°C during this month.
The mean minimum and maximum temperatures throughout the year
Precipitation and rainy days
Generally, Grantham has a moderate amount of precipitation, averaging 732 mm of rain/snowfall annually. Despite minor fluctuations, Grantham enjoys fairly consistent precipitation throughout the year. In June, you can expect around 74 mm of precipitation, while in February, Grantham receives about 48 mm.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
Sunshine over the year
Grantham can be enjoyed more throughout the sunniest month of May under a blue sky, with approximately 6.4 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 1.8 hours of sunlight per day.Monthly hours of sunshine
Daily hours of sunshine
Average humidity
The relative humidity is high throughout the year in Grantham.
Relative humidity over the year
The best time of year to visit Grantham in the United Kingdom
During the months of June, July and August you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.Other facts from our historical weather data:
July has an average maximum temperature of 23°C and is the warmest month of the year.
The coldest month is February with an average maximum temperature of 8°C.
June tops the wettest month list with 74 mm of rainfall.
February is the driest month with 48 mm of precipitation.
May is the sunniest month with an average of 193 hours of sunshine.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
