Hourly Weather Forecast - Harpenden, Hertfordshire, GB

12 AM
37°F
0%
4mph
WNW
Hazy
Humidity
97%
Feels like
33°F
Dew Point
36°F
1 AM
36°F
0%
4mph
WNW
Hazy
Humidity
96%
Feels like
32°F
Dew Point
35°F
2 AM
36°F
0%
4mph
W
Hazy
Humidity
97%
Feels like
32°F
Dew Point
35°F
3 AM
35°F
0%
5mph
SW
Hazy
Humidity
97%
Feels like
31°F
Dew Point
34°F
4 AM
35°F
0%
5mph
SSW
Foggy
Humidity
99%
Feels like
30°F
Dew Point
34°F
5 AM
34°F
0%
5mph
SSW
Foggy
Humidity
99%
Feels like
29°F
Dew Point
34°F
6 AM
33°F
0%
6mph
SSW
Foggy
Humidity
100%
Feels like
28°F
Dew Point
33°F
7 AM
33°F
0%
6mph
SSW
Foggy
Humidity
100%
Feels like
27°F
Dew Point
33°F
8 AM
34°F
0%
7mph
SSW
Foggy
Humidity
100%
Feels like
27°F
Dew Point
34°F
8:03 AM
9 AM
35°F
0%
8mph
SSW
Cloudy
Humidity
98%
Feels like
29°F
Dew Point
35°F
10 AM
38°F
0%
9mph
S
Cloudy
Humidity
95%
Feels like
31°F
Dew Point
37°F
11 AM
40°F
10%
11mph
S
Cloudy
Humidity
91%
Feels like
34°F
Dew Point
38°F
12 PM
42°F
10%
11mph
S
Mostly Cloudy
Humidity
87%
Feels like
36°F
Dew Point
39°F
1 PM
44°F
10%
13mph
SSW
Cloudy
Humidity
87%
Feels like
37°F
Dew Point
40°F
2 PM
45°F
10%
13mph
SSW
Cloudy
Humidity
87%
Feels like
38°F
Dew Point
41°F
3 PM
45°F
10%
14mph
SSW
Cloudy
Humidity
86%
Feels like
38°F
Dew Point
41°F
3:51 PM
4 PM
45°F
10%
15mph
SSW
Cloudy
Humidity
87%
Feels like
38°F
Dew Point
41°F
5 PM
45°F
20%
15mph
SSW
Cloudy
Humidity
87%
Feels like
38°F
Dew Point
41°F
6 PM
45°F
30%
15mph
SSW
30% Chance of Light Rain
Humidity
88%
Feels like
38°F
Dew Point
41°F
7 PM
45°F
30%
15mph
SSW
30% Chance of Rain
Humidity
89%
Feels like
38°F
Dew Point
42°F
8 PM
45°F
30%
16mph
SSW
30% Chance of Rain
Humidity
91%
Feels like
38°F
Dew Point
42°F
9 PM
45°F
30%
16mph
SSW
30% Chance of Light Rain
Humidity
92%
Feels like
38°F
Dew Point
43°F
10 PM
46°F
20%
16mph
SSW
Cloudy
Humidity
92%
Feels like
39°F
Dew Point
43°F
11 PM
46°F
30%
16mph
SSW
30% Chance of Light Rain
Humidity
93%
Feels like
39°F
Dew Point
44°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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