Hertfordshire weather live forecast

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

Thursday
21st May
22

11

5

UV6
Friday
22nd May
27

13

13

UV6
Saturday
23rd May
27

17

9

UV5
Sunday
24th May
30

15

9

UV6
Monday
25th May
30

15

14

UV6

5-day weather forecast updated at 04:03 on Thursday 21st May 2026 GMT

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

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Hertfordshire weather forecast by day

Below are the detailed weather forecasts for Hertfordshire for the next 5 days. The forecasts shown are for Watford and may not represent the whole of Hertfordshire. Browse more destinations in Hertfordshire to view more weather forecasts.

Hertfordshire weather for Thursday 21st May 2026

Expect broken clouds in Hertfordshire with a maximum temperature of 22°C, maximum UV of 6 (High) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the south-west.

22
°C maximum temperature
11
°C minimum temperature
broken clouds
5
hours of sunshine
UV6
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
12
kph wind from SW

Hertfordshire weather for Friday 22nd May 2026

Expect scattered clouds in Hertfordshire with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 6 (High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the south.

27
°C maximum temperature
13
°C minimum temperature
scattered clouds
13
hours of sunshine
UV6
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
14
kph wind from S

Hertfordshire weather for Saturday 23rd May 2026

Expect broken clouds in Hertfordshire with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 5 (Moderate) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 9 kph from the north-west.

27
°C maximum temperature
17
°C minimum temperature
broken clouds
9
hours of sunshine
UV5
UV index (Moderate)
0
mm of rainfall expected
L
low heat & humidity
9
kph wind from NW

Hertfordshire weather for Sunday 24th May 2026

Expect broken clouds in Hertfordshire with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 6 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 6 kph from the east.

30
°C maximum temperature
15
°C minimum temperature
broken clouds
9
hours of sunshine
UV6
UV index (High)
0
mm of rainfall expected
M
moderate heat & humidity
6
kph wind from E

Hertfordshire weather for Monday 25th May 2026

Expect scattered clouds in Hertfordshire with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 6 (High) and 14 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the south.