Hourly Weather Forecast - Harpenden, Hertfordshire, GB

3 AM
49°F
0%
15mph
S
Mostly Cloudy
Humidity
90%
Feels like
43°F
Dew Point
46°F
4 AM
48°F
0%
14mph
S
Mostly Cloudy
Humidity
91%
Feels like
42°F
Dew Point
45°F
5 AM
47°F
0%
13mph
S
Mostly Cloudy
Humidity
92%
Feels like
42°F
Dew Point
45°F
6 AM
47°F
0%
13mph
S
Cloudy
Humidity
93%
Feels like
41°F
Dew Point
45°F
7 AM
47°F
0%
13mph
SSW
Cloudy
Humidity
94%
Feels like
41°F
Dew Point
45°F
8 AM
47°F
0%
13mph
S
Cloudy
Humidity
95%
Feels like
41°F
Dew Point
46°F
8:01 AM
9 AM
47°F
0%
13mph
S
Mostly Cloudy
Humidity
94%
Feels like
42°F
Dew Point
46°F
10 AM
48°F
0%
13mph
S
Mostly Cloudy
Humidity
93%
Feels like
43°F
Dew Point
46°F
11 AM
50°F
0%
14mph
S
Partly Cloudy
Humidity
90%
Feels like
44°F
Dew Point
47°F
12 PM
50°F
0%
14mph
S
Mostly Cloudy
Humidity
88%
Feels like
50°F
Dew Point
47°F
1 PM
50°F
0%
14mph
S
Mostly Cloudy
Humidity
88%
Feels like
50°F
Dew Point
47°F
2 PM
49°F
0%
14mph
S
Cloudy
Humidity
91%
Feels like
44°F
Dew Point
47°F
3 PM
48°F
0%
13mph
S
Cloudy
Humidity
93%
Feels like
43°F
Dew Point
47°F
3:50 PM
4 PM
48°F
0%
13mph
S
Cloudy
Humidity
95%
Feels like
42°F
Dew Point
46°F
5 PM
47°F
0%
13mph
S
Cloudy
Humidity
96%
Feels like
42°F
Dew Point
46°F
6 PM
47°F
0%
13mph
S
Mostly Cloudy
Humidity
96%
Feels like
42°F
Dew Point
46°F
7 PM
47°F
0%
13mph
S
Mostly Cloudy
Humidity
96%
Feels like
42°F
Dew Point
46°F
8 PM
48°F
10%
13mph
SSE
Cloudy
Humidity
95%
Feels like
42°F
Dew Point
47°F
9 PM
48°F
0%
13mph
S
Cloudy
Humidity
94%
Feels like
43°F
Dew Point
47°F
10 PM
49°F
10%
12mph
S
Cloudy
Humidity
94%
Feels like
44°F
Dew Point
47°F
11 PM
49°F
10%
11mph
S
Cloudy
Humidity
94%
Feels like
44°F
Dew Point
47°F

Wind chill temperatures Monday A.M.

Cold Weather Chills the Nation Down to the Gulf

Extreme cold paired with their wind chill values will shiver much of the nation.

Snowfall forecast through Monday evening.

Mid-Atlantic, Great Lakes Snow Piles Up

Monday's Weather Outlook

Monday's Weather Outlook

How to Measure Snow via NWS

How To Measure Snow

Weekly Drought Map for December 11, 2025

Hit-or-Miss Precipitation Leads to Mixed Drought Results

A strong cold-air-damming event from March 20, 2018.

Cold Air Damming - Cause And Effects

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