Grantham weather live forecast

Today's maximum temperature in Grantham is expected to be 19°C. Select a day from the live weather forecast for Grantham, England, UK for more weather parameters.

Wednesday
3rd Sep
19

14

3

3
Thursday
4th Sep
16

11

3

2
Friday
5th Sep
19

10

9

2
Saturday
6th Sep
21

11

4

3
Sunday
7th Sep
23

14

1

3

5-day weather forecast updated at 04:05 on Wednesday 3rd September 2025 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 3rd September 2025

Expect mostly cloudy with rain in Grantham, England with a maximum temperature of 19°C, maximum UV of 3 (Moderate) and 3 hours of bright sunshine. There are 5-10 mm of rainfall expected with 75% chance of some rain and a fresh breeze of 34 kph from the south-west.

19
°C maximum temperature
14
°C minimum temperature
mostly cloudy with rain
3
hours of sunshine
3
UV index (Moderate)
75
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
34
kph wind from SW

Grantham weather for Thursday 4th September 2025

Expect mostly cloudy with light rain in Grantham, England with a maximum temperature of 16°C, maximum UV of 2 (Low) and 3 hours of bright sunshine. There are 2-5 mm of rainfall expected with 77% chance of some rain and a moderate breeze of 24 kph from the south-west.

16
°C maximum temperature
11
°C minimum temperature
mostly cloudy with light rain
3
hours of sunshine
2
UV index (Low)
77
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
24
kph wind from SW

Grantham weather for Friday 5th September 2025

Expect scattered clouds in Grantham, England with a maximum temperature of 19°C, maximum UV of 2 (Low) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 18 kph from the west.

19
°C maximum temperature
10
°C minimum temperature
scattered clouds
9
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
0
no heat & humidity
18
kph wind from W

Grantham weather for Saturday 6th September 2025

Expect broken clouds in Grantham, England with a maximum temperature of 21°C, maximum UV of 3 (Moderate) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 20 kph from the south.

21
°C maximum temperature
11
°C minimum temperature
broken clouds
4
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
21
°C wind chill
20
kph wind from S

Grantham weather for Sunday 7th September 2025

Expect mostly cloudy with rain in Grantham, England with a maximum temperature of 23°C, maximum UV of 3 (Moderate) and 1 hour of bright sunshine. There are 5-10 mm of rainfall expected with 48% chance of some rain and a moderate breeze of 26 kph from the south-east.