Hertfordshire weather live forecast

Today's maximum temperature in Hertfordshire is expected to be 20°C. Select a day from the live weather forecast for Hertfordshire (Watford), UK for more weather parameters.

Monday
28th Sep
20

12

3

3
Tuesday
29th Sep
25

15

6

2
Wednesday
30th Sep
22

14

5

2
Thursday
1st Oct
20

12

6

3
Friday
2nd Oct
21

10

4

3

5-day weather forecast updated at 04:04 on Monday 28th September 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 28th September 2026

Expect isolated thunderstorms in Hertfordshire with a maximum temperature of 20°C, maximum UV of 3 (Moderate) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 25% chance of some rain and a light breeze of 8 kph from the east.

20
°C maximum temperature
12
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
3
UV index (Moderate)
25
% chance of some rain
<2
mm of rainfall expected
20
°C wind chill
8
kph wind from E

Hertfordshire weather for Tuesday 29th September 2026

Expect isolated thunderstorms in Hertfordshire with a maximum temperature of 25°C, maximum UV of 2 (Low) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 17% chance of some rain and a gentle breeze of 16 kph from the south-east.

25
°C maximum temperature
15
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
2
UV index (Low)
17
% chance of some rain
<2
mm of rainfall expected
25
°C wind chill
16
kph wind from SE

Hertfordshire weather for Wednesday 30th September 2026

Expect sunshine and showers in Hertfordshire with a maximum temperature of 22°C, maximum UV of 2 (Low) and 5 hours of bright sunshine. There are 2-5 mm of rainfall expected with 83% chance of some rain and a gentle breeze of 19 kph from the south-west.

22
°C maximum temperature
14
°C minimum temperature
sunshine and showers
5
hours of sunshine
2
UV index (Low)
83
% chance of some rain
<5
mm of rainfall expected
22
°C wind chill
19
kph wind from SW

Hertfordshire weather for Thursday 1st October 2026

Expect broken clouds in Hertfordshire with a maximum temperature of 20°C, maximum UV of 3 (Moderate) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 18 kph from the south-west.

20
°C maximum temperature
12
°C minimum temperature
broken clouds
6
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
20
°C wind chill
18
kph wind from SW

Hertfordshire weather for Friday 2nd October 2026

Expect broken clouds in Hertfordshire with a maximum temperature of 21°C, maximum UV of 3 (Moderate) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 19 kph from the south.