Grantham weather live forecast

Today's maximum temperature in Grantham is expected to be 22°C. Select a day from the live weather forecast for Grantham, England, UK for more weather parameters.

Wednesday
17th Jun
22

16

2

4
Thursday
18th Jun
25

16

6

4
Friday
19th Jun
29

16

10

7
Saturday
20th Jun
23

15

3

5
Sunday
21st Jun
25

13

4

6

5-day weather forecast updated at 04:03 on Wednesday 17th June 2026 GMT

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The 5-day weather forecast for England (Grantham) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Grantham weather forecast by day

Below are the detailed weather forecasts for Grantham for the next 5 days.

Grantham weather for Wednesday 17th June 2026

Expect mostly cloudy with light rain in Grantham, England with a maximum temperature of 22°C, maximum UV of 4 (Moderate) and 2 hours of bright sunshine. There are 2-5 mm of rainfall expected with 17% chance of some rain and a moderate breeze of 25 kph from the south-west.

22
°C maximum temperature
16
°C minimum temperature
mostly cloudy with light rain
2
hours of sunshine
4
UV index (Moderate)
17
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
25
kph wind from SW

Grantham weather for Thursday 18th June 2026

Expect broken clouds in Grantham, England with a maximum temperature of 25°C, maximum UV of 4 (Moderate) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 25 kph from the south-west.

25
°C maximum temperature
16
°C minimum temperature
broken clouds
6
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
25
kph wind from SW

Grantham weather for Friday 19th June 2026

Expect scattered clouds in Grantham, England with a maximum temperature of 29°C, low levels of heat & humidity, maximum UV of 7 (High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 23 kph from the south-west.

29
°C maximum temperature
16
°C minimum temperature
scattered clouds
10
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
23
kph wind from SW

Grantham weather for Saturday 20th June 2026

Expect broken clouds in Grantham, England with a maximum temperature of 23°C, maximum UV of 5 (Moderate) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 20 kph from the west.

23
°C maximum temperature
15
°C minimum temperature
broken clouds
3
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
20
kph wind from W

Grantham weather for Sunday 21st June 2026

Expect broken clouds in Grantham, England with a maximum temperature of 25°C, maximum UV of 6 (High) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 18 kph from the south.