Hertfordshire weather live forecast

Today's maximum temperature in Hertfordshire is expected to be 21°C. Select a day from the live weather forecast for Hertfordshire (Watford), UK for more weather parameters.

Friday
5th Sep
21

11

7

5
Saturday
6th Sep
22

13

5

4
Sunday
7th Sep
23

15

1

3
Monday
8th Sep
21

13

7

3
Tuesday
9th Sep
20

13

6

4

5-day weather forecast updated at 04:05 on Friday 5th September 2025 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 Friday 5th September 2025

Expect scattered clouds in Hertfordshire with a maximum temperature of 21°C, maximum UV of 5 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the west.

21
°C maximum temperature
11
°C minimum temperature
scattered clouds
7
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
13
kph wind from W

Hertfordshire weather for Saturday 6th September 2025

Expect broken clouds in Hertfordshire with a maximum temperature of 22°C, maximum UV of 4 (Moderate) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 20 kph from the south-east.

22
°C maximum temperature
13
°C minimum temperature
broken clouds
5
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
20
kph wind from SE

Hertfordshire weather for Sunday 7th September 2025

Expect mostly cloudy with light rain in Hertfordshire with a maximum temperature of 23°C, maximum UV of 3 (Moderate) and 1 hour of bright sunshine. There are 0-2 mm of rainfall expected with 58% chance of some rain and a moderate breeze of 22 kph from the south-east.

23
°C maximum temperature
15
°C minimum temperature
mostly cloudy with light rain
1
hour of sunshine
3
UV index (Moderate)
58
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
22
kph wind from SE

Hertfordshire weather for Monday 8th September 2025

Expect broken clouds in Hertfordshire with a maximum temperature of 21°C, maximum UV of 3 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 27 kph from the south-west.

21
°C maximum temperature
13
°C minimum temperature
broken clouds
7
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
21
°C wind chill
27
kph wind from SW

Hertfordshire weather for Tuesday 9th September 2025

Expect sunshine and showers in Hertfordshire with a maximum temperature of 20°C, maximum UV of 4 (Moderate) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 49% chance of some rain and a moderate breeze of 23 kph from the south.