Hertfordshire weather live forecast

Today's maximum temperature in Hertfordshire is expected to be 13°C. Select a day from the live weather forecast for Hertfordshire (Watford), UK for more weather parameters.

Monday
18th May
13

6

0

3
Tuesday
19th May
16

9

2

4
Wednesday
20th May
17

10

5

4
Thursday
21st May
20

10

8

6
Friday
22nd May
26

12

7

6

5-day weather forecast updated at 04:03 on Monday 18th 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 Monday 18th May 2026

Expect mostly cloudy with light rain in Hertfordshire with a maximum temperature of 13°C, maximum UV of 3 (Moderate) and no hours of bright sunshine. There are 0-2 mm of rainfall expected with 57% chance of some rain and a gentle breeze of 15 kph from the south-west.

13
°C maximum temperature
6
°C minimum temperature
mostly cloudy with light rain
0
hours of sunshine
3
UV index (Moderate)
57
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
15
kph wind from SW

Hertfordshire weather for Tuesday 19th May 2026

Expect mostly cloudy with rain in Hertfordshire with a maximum temperature of 16°C, maximum UV of 4 (Moderate) and 2 hours of bright sunshine. There are 5-10 mm of rainfall expected with 69% chance of some rain and a gentle breeze of 19 kph from the south-west.

16
°C maximum temperature
9
°C minimum temperature
mostly cloudy with rain
2
hours of sunshine
4
UV index (Moderate)
69
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
19
kph wind from SW

Hertfordshire weather for Wednesday 20th May 2026

Expect mostly cloudy with light rain in Hertfordshire with a maximum temperature of 17°C, maximum UV of 4 (Moderate) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 45% chance of some rain and a moderate breeze of 21 kph from the south-west.

17
°C maximum temperature
10
°C minimum temperature
mostly cloudy with light rain
5
hours of sunshine
4
UV index (Moderate)
45
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
21
kph wind from SW

Hertfordshire weather for Thursday 21st May 2026

Expect broken clouds in Hertfordshire with a maximum temperature of 20°C, maximum UV of 6 (High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 20 kph from the south-west.

20
°C maximum temperature
10
°C minimum temperature
broken clouds
8
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
20
kph wind from SW

Hertfordshire weather for Friday 22nd May 2026

Expect broken clouds in Hertfordshire with a maximum temperature of 26°C, maximum UV of 6 (High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the south-west.