Grantham weather live forecast

Today's maximum temperature in Grantham is expected to be 17°C. Select a day from the live weather forecast for Grantham, England, UK for more weather parameters.

Wednesday
18th Mar
17

4

12

3
Thursday
19th Mar
15

3

9

2
Friday
20th Mar
13

3

4

2
Saturday
21st Mar
12

3

8

1
Sunday
22nd Mar
12

3

4

2

5-day weather forecast updated at 04:03 on Wednesday 18th March 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 18th March 2026

Expect clear skies in Grantham, England with a maximum temperature of 17°C, maximum UV of 3 (Moderate) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 18 kph from the south-east.

17
°C maximum temperature
4
°C minimum temperature
clear skies
12
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
17
°C wind chill
18
kph wind from SE

Grantham weather for Thursday 19th March 2026

Expect scattered clouds in Grantham, England with a maximum temperature of 15°C, maximum UV of 2 (Low) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the east.

15
°C maximum temperature
3
°C minimum temperature
scattered clouds
9
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
15
°C wind chill
11
kph wind from E

Grantham weather for Friday 20th March 2026

Expect fog in low lying areas in Grantham, England with a maximum temperature of 13°C, maximum UV of 2 (Low) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the east.

13
°C maximum temperature
3
°C minimum temperature
fog in low lying areas
4
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
13
°C wind chill
11
kph wind from E

Grantham weather for Saturday 21st March 2026

Expect scattered clouds in Grantham, England with a maximum temperature of 12°C, maximum UV of 1 (Low) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the south-east.

12
°C maximum temperature
3
°C minimum temperature
scattered clouds
8
hours of sunshine
1
UV index (Low)
0
mm of rainfall expected
0
no heat & humidity
11
kph wind from SE

Grantham weather for Sunday 22nd March 2026

Expect broken clouds in Grantham, England with a maximum temperature of 12°C, maximum UV of 2 (Low) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the south-west.