Grantham weather live forecast

Today's maximum temperature in Grantham is expected to be 81°F. Select a day from the live weather forecast for Grantham, England, UK for more weather parameters.

Friday
22nd May
81

59

10

UV6
Saturday
23rd May
75

59

9

UV6
Sunday
24th May
81

54

16

UV7
Monday
25th May
90

59

16

UV7
Tuesday
26th May
79

54

14

UV6

5-day weather forecast updated at 04:03 on Friday 22nd May 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 Friday 22nd May 2026

Expect scattered clouds in Grantham, England with a maximum temperature of 81°F, low levels of heat & humidity, maximum UV of 6 (High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 16 mph from the south.

81
°F maximum temperature
59
°F minimum temperature
scattered clouds
10
hours of sunshine
UV6
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
16
mph wind from S

Grantham weather for Saturday 23rd May 2026

Expect isolated thunderstorms in Grantham, England with a maximum temperature of 75°F, maximum UV of 6 (High) and 9 hours of bright sunshine. There are 0-2 mm of rainfall expected with 7% chance of some rain and a gentle breeze of 9 mph from the west.

75
°F maximum temperature
59
°F minimum temperature
isolated thunderstorms
9
hours of sunshine
UV6
UV index (High)
7
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
9
mph wind from W

Grantham weather for Sunday 24th May 2026

Expect clear skies in Grantham, England with a maximum temperature of 81°F, low levels of heat & humidity, maximum UV of 7 (High) and 16 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 mph from the west.

81
°F maximum temperature
54
°F minimum temperature
clear skies
16
hours of sunshine
UV7
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
7
mph wind from W

Grantham weather for Monday 25th May 2026

Expect clear skies in Grantham, England with a maximum temperature of 90°F, moderate levels of heat & humidity, maximum UV of 7 (High) and 16 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 9 mph from the south-west.

90
°F maximum temperature
59
°F minimum temperature
clear skies
16
hours of sunshine
UV7
UV index (High)
0
mm of rainfall expected
M
moderate heat & humidity
9
mph wind from SW

Grantham weather for Tuesday 26th May 2026

Expect scattered clouds in Grantham, England with a maximum temperature of 79°F, maximum UV of 6 (High) and 14 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 14 mph from the north-east.