Hourly Weather Forecast - Harpenden, Hertfordshire, GB

12 AM
36°F
10%
13mph
NW
Clear
Humidity
75%
Feels like
27°F
Dew Point
29°F
1 AM
35°F
10%
13mph
NW
Mostly Clear
Humidity
76%
Feels like
26°F
Dew Point
28°F
2 AM
34°F
0%
13mph
NW
Partly Cloudy
Humidity
77%
Feels like
25°F
Dew Point
28°F
3 AM
34°F
0%
12mph
NW
Mostly Cloudy
Humidity
75%
Feels like
25°F
Dew Point
27°F
4 AM
33°F
0%
12mph
NW
Partly Cloudy
Humidity
75%
Feels like
24°F
Dew Point
26°F
5 AM
32°F
0%
12mph
NW
Mostly Clear
Humidity
77%
Feels like
23°F
Dew Point
26°F
5:51 AM
6 AM
33°F
0%
12mph
NW
Sunny
Humidity
77%
Feels like
24°F
Dew Point
26°F
7 AM
35°F
0%
12mph
NW
Sunny
Humidity
73%
Feels like
27°F
Dew Point
27°F
8 AM
38°F
0%
13mph
NW
Sunny
Humidity
67%
Feels like
30°F
Dew Point
28°F
9 AM
41°F
10%
14mph
NW
Sunny
Humidity
62%
Feels like
34°F
Dew Point
29°F
10 AM
44°F
10%
14mph
NW
Sunny
Humidity
58%
Feels like
37°F
Dew Point
30°F
11 AM
46°F
10%
14mph
NW
Sunny
Humidity
54%
Feels like
39°F
Dew Point
30°F
12 PM
47°F
10%
13mph
NW
Sunny
Humidity
50%
Feels like
42°F
Dew Point
30°F
1 PM
48°F
10%
13mph
NW
Partly Cloudy
Humidity
48%
Feels like
43°F
Dew Point
30°F
2 PM
48°F
10%
13mph
NW
Mostly Cloudy
Humidity
48%
Feels like
43°F
Dew Point
30°F
3 PM
47°F
10%
12mph
NW
Cloudy
Humidity
51%
Feels like
42°F
Dew Point
30°F
4 PM
46°F
10%
11mph
NW
Cloudy
Humidity
53%
Feels like
40°F
Dew Point
29°F
5 PM
44°F
10%
10mph
NW
Cloudy
Humidity
57%
Feels like
38°F
Dew Point
29°F
6 PM
42°F
10%
9mph
NW
Mostly Cloudy
Humidity
60%
Feels like
37°F
Dew Point
29°F
6:24 PM
7 PM
41°F
10%
7mph
NW
Mostly Cloudy
Humidity
63%
Feels like
36°F
Dew Point
29°F
8 PM
40°F
10%
6mph
NW
Partly Cloudy
Humidity
67%
Feels like
35°F
Dew Point
29°F
9 PM
38°F
10%
6mph
NW
Partly Cloudy
Humidity
70%
Feels like
34°F
Dew Point
30°F
10 PM
38°F
10%
6mph
WNW
Partly Cloudy
Humidity
75%
Feels like
33°F
Dew Point
30°F
11 PM
37°F
10%
6mph
WNW
Partly Cloudy
Humidity
78%
Feels like
32°F
Dew Point
31°F

Sunday's High Temperature Outlook

Early Spring Heat Wave Zaps Southwest

Much of the Southwest will observe record-breaking heat through the weekend, with high temperatures reminiscent of mid-summer!

Weekend Weather Outlook

Weekend Weather Outlook

Weekly Drought Map for March 19, 2026

Active Weather, Drought Improvements for Eastern Half; Drying Persists Elsewhere

(Image provided by Pixabay.com)

Lightning Safety

A tree knocked over after a storm produced high winds. (provided by PublicDomainPictures via Pixabay.com)

Strong Winds in the Springtime

Story image: WeatherBug user Pat S. captures a plant blooming in Columbia, Md., on February 24, 2017.

When Does Spring Begin?

loading ad...

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide