Welwyn (Hertfordshire) weather
Find a forecast
Forecast days
-
Maximum daytime temperature: 13° Celsius; Minimum nighttime temperature: 10° Celsius;
Maximum daytime temperature: 13 degrees Celsius; Minimum nighttime temperature: 10 degrees Celsius; -
Maximum daytime temperature: 14° Celsius; Minimum nighttime temperature: 8° Celsius;
Maximum daytime temperature: 14 degrees Celsius; Minimum nighttime temperature: 8 degrees Celsius; -
Maximum daytime temperature: 16° Celsius; Minimum nighttime temperature: 9° Celsius;
Maximum daytime temperature: 16 degrees Celsius; Minimum nighttime temperature: 9 degrees Celsius;
-
Maximum daytime temperature: 13° Celsius; Minimum nighttime temperature: 9° Celsius;
Maximum daytime temperature: 13 degrees Celsius; Minimum nighttime temperature: 9 degrees Celsius; -
Maximum daytime temperature: 13° Celsius; Minimum nighttime temperature: 4° Celsius;
Maximum daytime temperature: 13 degrees Celsius; Minimum nighttime temperature: 4 degrees Celsius; -
Maximum daytime temperature: 11° Celsius; Minimum nighttime temperature: 7° Celsius;
Maximum daytime temperature: 11 degrees Celsius; Minimum nighttime temperature: 7 degrees Celsius; -
Maximum daytime temperature: 12° Celsius; Minimum nighttime temperature: 8° Celsius;
Maximum daytime temperature: 12 degrees Celsius; Minimum nighttime temperature: 8 degrees Celsius;
Overcast.
Sunrise:
Sunset:
L UV
L Pollution
No pollen data.
7 day forecast for Welwyn
Today (23 February 2026)
| Time |
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|
| Weather symbols |  |
|
|
|
|
|
| Chance of precipitation |
20%
|
30%
|
30%
|
20%
|
10%
|
<5%
|
| Temperature |
10°
|
10°
|
11°
|
11°
|
11°
|
11°
|
| Feels like temperature (°C) |
8°
|
9°
|
9°
|
9°
|
9°
|
9°
|
| Wind direction and speed |
SW
7
|
SW
8
|
WSW
10
|
WSW
11
|
WSW
12
|
WSW
11
|
| Wind gust (mph) |
17
|
20
|
21
|
23
|
23
|
22
|
| Visibility |
M
|
M
|
M
|
G
|
G
|
G
|
| Humidity |
96%
|
95%
|
95%
|
95%
|
95%
|
94%
|
| UV | - | - | - | - | - | - |
Tuesday (24 February 2026)
| Time |
00:00
|
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
 |
 |
|
 |
|
|
|
|
|
 |
|
|
|
 |
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
10%
|
20%
|
10%
|
10%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
11°
|
11°
|
11°
|
11°
|
11°
|
11°
|
10°
|
10°
|
11°
|
11°
|
11°
|
12°
|
13°
|
13°
|
14°
|
14°
|
13°
|
12°
|
11°
|
10°
|
9°
|
9°
|
9°
|
9°
|
| Feels like temperature (°C) |
9°
|
10°
|
10°
|
10°
|
9°
|
9°
|
9°
|
8°
|
9°
|
9°
|
9°
|
9°
|
10°
|
11°
|
11°
|
11°
|
11°
|
10°
|
9°
|
8°
|
8°
|
7°
|
7°
|
7°
|
| Wind direction and speed (mph) |
WSW
10
|
WSW
9
|
SW
8
|
SW
8
|
SW
8
|
SW
9
|
SW
9
|
SSW
9
|
SSW
9
|
SSW
11
|
SSW
12
|
SSW
13
|
SSW
14
|
SSW
14
|
SSW
13
|
SSW
13
|
S
11
|
S
10
|
S
9
|
S
8
|
S
7
|
SSE
7
|
SSE
7
|
SSE
8
|
| Wind gust (mph) |
20
|
19
|
17
|
18
|
18
|
17
|
17
|
17
|
21
|
24
|
26
|
26
|
27
|
27
|
25
|
24
|
21
|
18
|
16
|
15
|
14
|
14
|
14
|
15
|
| Visibility (description) |
G
|
G
|
G
|
G
|
G
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
93%
|
93%
|
94%
|
96%
|
95%
|
94%
|
93%
|
93%
|
93%
|
89%
|
86%
|
82%
|
76%
|
70%
|
67%
|
67%
|
67%
|
75%
|
84%
|
86%
|
91%
|
93%
|
93%
|
93%
|
| UV | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - | - |
Wednesday (25 February 2026)
| Time |
00:00
|
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
10%
|
10%
|
10%
|
<5%
|
<5%
|
10%
|
| Temperature (°C) |
9°
|
9°
|
9°
|
8°
|
8°
|
8°
|
8°
|
8°
|
9°
|
10°
|
11°
|
13°
|
14°
|
15°
|
16°
|
16°
|
15°
|
14°
|
13°
|
12°
|
11°
|
11°
|
11°
|
10°
|
| Feels like temperature (°C) |
7°
|
7°
|
7°
|
6°
|
6°
|
6°
|
6°
|
6°
|
7°
|
8°
|
9°
|
11°
|
12°
|
13°
|
14°
|
14°
|
14°
|
13°
|
11°
|
10°
|
10°
|
9°
|
9°
|
8°
|
| Wind direction and speed (mph) |
SSE
8
|
SSE
8
|
SSE
8
|
S
7
|
S
7
|
S
7
|
S
7
|
S
7
|
SSW
8
|
SSW
8
|
SSW
8
|
SSW
9
|
SSW
10
|
SSW
10
|
SSW
10
|
SSW
10
|
SSW
9
|
SSW
8
|
SSW
8
|
SSW
8
|
SSW
8
|
SSW
8
|
SSW
8
|
SSW
8
|
| Wind gust (mph) |
16
|
15
|
15
|
15
|
15
|
14
|
13
|
14
|
16
|
17
|
19
|
19
|
21
|
22
|
21
|
19
|
17
|
15
|
15
|
15
|
15
|
16
|
15
|
17
|
| Visibility (description) |
G
|
G
|
G
|
M
|
M
|
M
|
M
|
P
|
M
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
94%
|
95%
|
96%
|
97%
|
98%
|
98%
|
98%
|
98%
|
97%
|
94%
|
88%
|
83%
|
76%
|
74%
|
71%
|
68%
|
73%
|
76%
|
83%
|
84%
|
85%
|
87%
|
89%
|
90%
|
| UV | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - | - |
Thursday (26 February 2026)
| Time |
00:00
|
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
 |
|
|
|
|
|
|
|
|
| Chance of precipitation |
10%
|
10%
|
10%
|
20%
|
10%
|
20%
|
20%
|
20%
|
30%
|
20%
|
30%
|
30%
|
20%
|
30%
|
30%
|
50%
|
50%
|
60%
|
60%
|
70%
|
70%
|
70%
|
60%
|
70%
|
| Temperature (°C) |
10°
|
10°
|
10°
|
10°
|
10°
|
10°
|
10°
|
10°
|
11°
|
11°
|
12°
|
12°
|
12°
|
12°
|
12°
|
12°
|
11°
|
11°
|
11°
|
11°
|
11°
|
11°
|
11°
|
11°
|
| Feels like temperature (°C) |
8°
|
8°
|
8°
|
8°
|
8°
|
8°
|
8°
|
8°
|
8°
|
8°
|
9°
|
9°
|
9°
|
9°
|
9°
|
9°
|
9°
|
8°
|
8°
|
8°
|
8°
|
8°
|
8°
|
8°
|
| Wind direction and speed (mph) |
SSW
9
|
SW
10
|
SW
11
|
SW
11
|
SW
11
|
SW
12
|
SW
12
|
SW
13
|
SW
13
|
SW
14
|
SW
14
|
SW
14
|
SW
15
|
SW
16
|
SW
16
|
SW
16
|
SW
16
|
SW
16
|
SSW
16
|
SSW
16
|
SSW
15
|
SSW
15
|
SSW
15
|
SSW
15
|
| Wind gust (mph) |
18
|
21
|
22
|
22
|
23
|
25
|
27
|
28
|
28
|
29
|
30
|
32
|
32
|
32
|
33
|
32
|
31
|
32
|
32
|
32
|
32
|
31
|
31
|
31
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
G
|
G
|
G
|
G
|
G
|
| Humidity |
90%
|
90%
|
91%
|
91%
|
91%
|
90%
|
88%
|
88%
|
86%
|
84%
|
81%
|
77%
|
75%
|
74%
|
76%
|
77%
|
83%
|
83%
|
86%
|
87%
|
88%
|
92%
|
92%
|
92%
|
| UV | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - | - |
Friday (27 February 2026)
| Time |
00:00
|
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Chance of precipitation |
70%
|
70%
|
50%
|
50%
|
50%
|
40%
|
40%
|
40%
|
40%
|
30%
|
30%
|
20%
|
20%
|
20%
|
20%
|
30%
|
30%
|
40%
|
30%
|
20%
|
20%
|
20%
|
10%
|
10%
|
| Temperature (°C) |
11°
|
11°
|
11°
|
11°
|
11°
|
11°
|
11°
|
10°
|
11°
|
11°
|
11°
|
12°
|
12°
|
12°
|
12°
|
12°
|
11°
|
11°
|
10°
|
9°
|
8°
|
8°
|
7°
|
7°
|
| Feels like temperature (°C) |
8°
|
8°
|
8°
|
8°
|
8°
|
8°
|
8°
|
8°
|
8°
|
8°
|
8°
|
9°
|
9°
|
9°
|
9°
|
9°
|
9°
|
8°
|
7°
|
7°
|
6°
|
6°
|
5°
|
4°
|
| Wind direction and speed (mph) |
SSW
15
|
SW
15
|
SW
15
|
SW
15
|
SW
15
|
SW
15
|
SW
15
|
SW
13
|
SW
14
|
SW
14
|
WSW
15
|
WSW
16
|
WSW
15
|
W
15
|
WSW
14
|
WSW
14
|
WSW
13
|
WSW
11
|
WSW
10
|
WSW
9
|
WSW
9
|
WSW
9
|
W
9
|
W
8
|
| Wind gust (mph) |
31
|
31
|
31
|
29
|
29
|
30
|
25
|
25
|
29
|
32
|
34
|
31
|
30
|
29
|
29
|
28
|
26
|
23
|
21
|
17
|
17
|
18
|
17
|
16
|
| Visibility (description) |
M
|
G
|
G
|
G
|
G
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
E
|
VG
|
E
|
VG
|
VG
|
| Humidity |
93%
|
93%
|
92%
|
93%
|
92%
|
91%
|
90%
|
91%
|
91%
|
85%
|
77%
|
70%
|
65%
|
60%
|
58%
|
59%
|
63%
|
67%
|
72%
|
77%
|
79%
|
82%
|
84%
|
85%
|
| UV | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - | - |
Saturday (28 February 2026)
| Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
| Chance of precipitation |
10%
|
10%
|
<5%
|
10%
|
10%
|
20%
|
40%
|
50%
|
| Temperature (°C) |
7°
|
5°
|
5°
|
6°
|
9°
|
10°
|
9°
|
8°
|
| Feels like temperature (°C) |
4°
|
3°
|
2°
|
4°
|
7°
|
8°
|
6°
|
5°
|
| Wind direction and speed (mph) |
W
8
|
WSW
6
|
SW
6
|
SSW
7
|
SSW
10
|
SSW
12
|
S
12
|
S
12
|
| Wind gust (mph) |
16
|
13
|
14
|
21
|
24
|
25
|
26
|
26
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
G
|
| Humidity |
85%
|
88%
|
91%
|
85%
|
66%
|
60%
|
72%
|
82%
|
| UV | - | - | 1 | 1 | 2 | 1 | - | - |
Sunday (1 March 2026)
| Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
| Chance of precipitation |
40%
|
40%
|
20%
|
30%
|
40%
|
30%
|
20%
|
30%
|
| Temperature (°C) |
8°
|
8°
|
8°
|
9°
|
11°
|
11°
|
11°
|
10°
|
| Feels like temperature (°C) |
5°
|
5°
|
5°
|
6°
|
8°
|
9°
|
8°
|
8°
|
| Wind direction and speed (mph) |
S
11
|
S
10
|
SSW
10
|
SSW
11
|
SSW
12
|
SSW
12
|
SSW
11
|
S
11
|
| Wind gust (mph) |
24
|
22
|
22
|
25
|
27
|
27
|
23
|
23
|
| Visibility (description) |
G
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
86%
|
88%
|
88%
|
87%
|
79%
|
76%
|
83%
|
85%
|
| UV | - | - | 1 | 1 | 1 | 1 | - | - |
Tooltip header
UK video forecast
Welwyn weather map
View the weather with our interactive map
Loading map...
WARNING
Flood warnings in force for England
Flood warnings in force for England
East of England weather forecast
Headline:
Evening rain clearing. Drier Tuesday with afternoon sunny spells. Mild.
This Evening and Tonight:
Cloudy with outbreaks of rain or drizzle through the evening. These easing after midnight to become largely dry by dawn, although the odd spot of rain remaining possible in the east. Perhaps some clear spells developing further west. Mild. Minimum temperature 9 °C.
Tuesday:
Any overnight rain soon clearing. A dry and often cloudy morning follows, with a few brighter spells. Cloud clearing in the afternoon to give longer sunny periods. Very mild. Maximum temperature 14 °C.
Outlook for Wednesday to Friday:
Early fog clearing, then dry and very mild with warm sunny spells Wednesday. Breezy with rain or showers Thursday. Likely wet and windy at first Friday, then cooler with showers.
Updated: