Letchworth Garden City (Hertfordshire) weather
Find a forecast
Forecast days
-
Maximum daytime temperature: 21° Celsius; Minimum nighttime temperature: 11° Celsius;
Maximum daytime temperature: 21 degrees Celsius; Minimum nighttime temperature: 11 degrees Celsius; -
Maximum daytime temperature: 21° Celsius; Minimum nighttime temperature: 15° Celsius;
Maximum daytime temperature: 21 degrees Celsius; Minimum nighttime temperature: 15 degrees Celsius;
-
Maximum daytime temperature: 22° Celsius; Minimum nighttime temperature: 17° Celsius;
Maximum daytime temperature: 22 degrees Celsius; Minimum nighttime temperature: 17 degrees Celsius; -
Maximum daytime temperature: 24° Celsius; Minimum nighttime temperature: 17° Celsius;
Maximum daytime temperature: 24 degrees Celsius; Minimum nighttime temperature: 17 degrees Celsius;
-
Maximum daytime temperature: 24° Celsius; Minimum nighttime temperature: 14° Celsius;
Maximum daytime temperature: 24 degrees Celsius; Minimum nighttime temperature: 14 degrees Celsius;
-
Maximum daytime temperature: 22° Celsius; Minimum nighttime temperature: 14° Celsius;
Maximum daytime temperature: 22 degrees Celsius; Minimum nighttime temperature: 14 degrees Celsius;
-
Maximum daytime temperature: 23° Celsius; Minimum nighttime temperature: 15° Celsius;
Maximum daytime temperature: 23 degrees Celsius; Minimum nighttime temperature: 15 degrees Celsius;
7 day forecast for Letchworth Garden City
Today (31 August 2026)
| Time |
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 |
30%
|
50%
|
70%
|
60%
|
50%
|
40%
|
50%
|
30%
|
10%
|
<5%
|
<5%
|
| Temperature |
20°
|
20°
|
20°
|
20°
|
20°
|
19°
|
18°
|
17°
|
16°
|
16°
|
15°
|
| Feels like temperature (°C) |
17°
|
17°
|
18°
|
18°
|
18°
|
18°
|
17°
|
17°
|
16°
|
15°
|
14°
|
| Wind direction and speed |
WNW
11
|
WNW
13
|
WNW
11
|
WNW
11
|
WNW
11
|
WNW
9
|
WNW
8
|
WNW
7
|
WNW
7
|
WNW
6
|
WNW
6
|
| Wind gust (mph) |
27
|
28
|
28
|
27
|
25
|
23
|
20
|
17
|
17
|
15
|
12
|
| Visibility |
E
|
VG
|
VG
|
VG
|
VG
|
E
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
65%
|
66%
|
67%
|
69%
|
66%
|
68%
|
73%
|
77%
|
81%
|
79%
|
77%
|
| UV | 5 | 4 | 4 | 2 | 1 | 1 | 1 | - | - | - | - |
Tuesday (1 September 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%
|
10%
|
10%
|
10%
|
10%
|
10%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
14°
|
13°
|
13°
|
12°
|
12°
|
12°
|
11°
|
12°
|
13°
|
15°
|
17°
|
19°
|
19°
|
20°
|
20°
|
20°
|
21°
|
20°
|
20°
|
19°
|
18°
|
17°
|
17°
|
16°
|
| Feels like temperature (°C) |
13°
|
13°
|
12°
|
11°
|
11°
|
11°
|
10°
|
11°
|
12°
|
15°
|
16°
|
17°
|
17°
|
18°
|
18°
|
18°
|
19°
|
19°
|
18°
|
18°
|
17°
|
17°
|
16°
|
15°
|
| Wind direction and speed (mph) |
W
5
|
WSW
5
|
WSW
6
|
WSW
6
|
WSW
6
|
WSW
6
|
WSW
6
|
WSW
6
|
WSW
6
|
WSW
6
|
WSW
7
|
WSW
8
|
WSW
9
|
WSW
9
|
WSW
9
|
WSW
9
|
WSW
9
|
WSW
9
|
WSW
8
|
WSW
7
|
SW
6
|
SW
6
|
SW
7
|
SW
7
|
| Wind gust (mph) |
11
|
11
|
12
|
12
|
12
|
11
|
11
|
13
|
14
|
15
|
19
|
20
|
20
|
21
|
22
|
21
|
21
|
21
|
18
|
15
|
13
|
13
|
14
|
14
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
80%
|
83%
|
83%
|
84%
|
84%
|
85%
|
86%
|
85%
|
82%
|
75%
|
67%
|
56%
|
55%
|
55%
|
55%
|
55%
|
55%
|
55%
|
56%
|
64%
|
71%
|
74%
|
76%
|
78%
|
| UV | - | - | - | - | - | - | 1 | 1 | 1 | 2 | 4 | 5 | 5 | 5 | 4 | 3 | 2 | 1 | 1 | 1 | - | - | - | - |
Wednesday (2 September 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%
|
10%
|
20%
|
10%
|
10%
|
30%
|
40%
|
50%
|
50%
|
60%
|
50%
|
40%
|
40%
|
20%
|
20%
|
20%
|
30%
|
20%
|
20%
|
20%
|
20%
|
10%
|
10%
|
| Temperature (°C) |
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
16°
|
17°
|
18°
|
19°
|
19°
|
21°
|
21°
|
21°
|
21°
|
21°
|
20°
|
20°
|
19°
|
19°
|
18°
|
| Feels like temperature (°C) |
15°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
15°
|
15°
|
16°
|
17°
|
17°
|
19°
|
19°
|
19°
|
19°
|
19°
|
19°
|
18°
|
18°
|
17°
|
17°
|
| Wind direction and speed (mph) |
SW
7
|
SW
7
|
SW
7
|
SSW
6
|
SSW
6
|
SSW
6
|
SSW
7
|
SSW
7
|
SSW
8
|
SSW
9
|
SSW
10
|
SSW
13
|
SSW
13
|
SW
14
|
SW
15
|
SW
14
|
SW
14
|
SW
14
|
SW
13
|
SW
11
|
SW
11
|
SW
10
|
SW
10
|
SW
9
|
| Wind gust (mph) |
15
|
13
|
13
|
13
|
13
|
14
|
15
|
17
|
21
|
26
|
28
|
30
|
31
|
31
|
31
|
32
|
30
|
29
|
26
|
25
|
23
|
22
|
22
|
22
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
G
|
G
|
G
|
G
|
G
|
M
|
M
|
G
|
G
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
G
|
G
|
G
|
| Humidity |
84%
|
85%
|
85%
|
86%
|
87%
|
86%
|
87%
|
86%
|
86%
|
85%
|
80%
|
80%
|
80%
|
74%
|
73%
|
71%
|
72%
|
73%
|
75%
|
81%
|
83%
|
83%
|
85%
|
86%
|
| UV | - | - | - | - | - | - | 1 | 1 | 1 | 2 | 2 | 3 | 3 | 3 | 4 | 2 | 2 | 1 | 1 | 1 | - | - | - | - |
Thursday (3 September 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%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
20%
|
20%
|
20%
|
20%
|
20%
|
20%
|
20%
|
| Temperature (°C) |
18°
|
18°
|
18°
|
18°
|
18°
|
18°
|
18°
|
18°
|
18°
|
19°
|
20°
|
21°
|
22°
|
22°
|
23°
|
23°
|
23°
|
23°
|
22°
|
22°
|
21°
|
20°
|
19°
|
19°
|
| Feels like temperature (°C) |
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
18°
|
19°
|
20°
|
20°
|
20°
|
21°
|
21°
|
21°
|
21°
|
21°
|
21°
|
20°
|
19°
|
19°
|
18°
|
| Wind direction and speed (mph) |
SW
9
|
SW
10
|
SW
10
|
SW
10
|
SW
10
|
SW
10
|
SW
10
|
SW
10
|
SW
10
|
WSW
11
|
WSW
11
|
WSW
11
|
WSW
13
|
WSW
13
|
WSW
13
|
WSW
13
|
WSW
13
|
WSW
11
|
WSW
10
|
WSW
9
|
WSW
9
|
SW
9
|
SW
9
|
SW
9
|
| Wind gust (mph) |
22
|
22
|
22
|
22
|
22
|
22
|
21
|
22
|
24
|
26
|
26
|
29
|
29
|
29
|
29
|
28
|
27
|
26
|
25
|
22
|
22
|
22
|
21
|
21
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
G
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
G
|
| Humidity |
85%
|
85%
|
86%
|
86%
|
87%
|
88%
|
89%
|
88%
|
86%
|
81%
|
75%
|
69%
|
64%
|
61%
|
58%
|
57%
|
57%
|
58%
|
63%
|
68%
|
73%
|
77%
|
82%
|
83%
|
| UV | - | - | - | - | - | - | 1 | 1 | 1 | 2 | 3 | 4 | 4 | 4 | 4 | 3 | 2 | 1 | 1 | 1 | - | - | - | - |
Friday (4 September 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 |
20%
|
30%
|
30%
|
30%
|
30%
|
40%
|
30%
|
40%
|
40%
|
30%
|
30%
|
30%
|
40%
|
30%
|
20%
|
20%
|
30%
|
30%
|
20%
|
20%
|
20%
|
20%
|
20%
|
10%
|
| Temperature (°C) |
19°
|
18°
|
18°
|
18°
|
18°
|
18°
|
18°
|
18°
|
18°
|
18°
|
19°
|
20°
|
22°
|
23°
|
24°
|
24°
|
23°
|
23°
|
23°
|
21°
|
19°
|
18°
|
18°
|
17°
|
| Feels like temperature (°C) |
18°
|
18°
|
18°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
18°
|
19°
|
22°
|
23°
|
23°
|
22°
|
22°
|
22°
|
22°
|
20°
|
18°
|
18°
|
17°
|
16°
|
| Wind direction and speed (mph) |
SW
9
|
SW
9
|
SW
9
|
SW
9
|
SW
9
|
SW
9
|
WSW
9
|
WSW
9
|
WSW
10
|
WSW
9
|
WSW
9
|
WSW
10
|
WSW
11
|
WSW
11
|
WSW
11
|
WSW
11
|
WSW
11
|
WSW
10
|
W
9
|
W
8
|
WSW
8
|
WSW
8
|
WSW
8
|
WSW
7
|
| Wind gust (mph) |
21
|
20
|
23
|
25
|
24
|
24
|
23
|
23
|
25
|
26
|
28
|
27
|
27
|
25
|
27
|
28
|
26
|
25
|
22
|
19
|
18
|
17
|
16
|
15
|
| Visibility (description) |
VG
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
83%
|
84%
|
86%
|
86%
|
86%
|
86%
|
87%
|
87%
|
86%
|
85%
|
82%
|
79%
|
76%
|
71%
|
68%
|
66%
|
64%
|
63%
|
64%
|
69%
|
70%
|
75%
|
78%
|
80%
|
| UV | - | - | - | - | - | - | 1 | 1 | 1 | 2 | 2 | 3 | 4 | 4 | 4 | 3 | 2 | 1 | 1 | 1 | - | - | - | - |
Saturday (5 September 2026)
| Time |
00:00
|
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
|
| Chance of precipitation |
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
| Temperature (°C) |
17°
|
16°
|
15°
|
14°
|
17°
|
21°
|
21°
|
19°
|
16°
|
| Feels like temperature (°C) |
17°
|
16°
|
15°
|
14°
|
16°
|
20°
|
20°
|
19°
|
16°
|
| Wind direction and speed (mph) |
WSW
7
|
WSW
7
|
W
6
|
WSW
6
|
W
7
|
W
7
|
W
7
|
WNW
5
|
N
4
|
| Wind gust (mph) |
14
|
15
|
13
|
16
|
18
|
18
|
15
|
10
|
10
|
| Visibility (description) |
VG
|
VG
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
82%
|
83%
|
87%
|
88%
|
75%
|
59%
|
55%
|
65%
|
77%
|
| UV | - | - | - | 1 | 3 | 5 | 2 | 1 | - |
Sunday (6 September 2026)
| Time |
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
| Chance of precipitation |
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
| Temperature (°C) |
16°
|
15°
|
15°
|
18°
|
21°
|
22°
|
20°
|
18°
|
| Feels like temperature (°C) |
15°
|
15°
|
14°
|
18°
|
21°
|
22°
|
20°
|
18°
|
| Wind direction and speed (mph) |
SE
5
|
S
5
|
S
6
|
SSW
7
|
SW
7
|
SSW
7
|
SSW
7
|
SSW
7
|
| Wind gust (mph) |
11
|
11
|
14
|
18
|
20
|
19
|
16
|
15
|
| Visibility (description) |
G
|
G
|
G
|
VG
|
VG
|
VG
|
G
|
G
|
| Humidity |
80%
|
85%
|
88%
|
79%
|
66%
|
61%
|
69%
|
77%
|
| UV | - | - | 1 | 3 | 5 | 2 | 1 | - |
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Flood alerts in force for England
Flood alerts in force for England
East of England weather forecast
Headline:
Partly cloudy with isolated showers. Fresh winds.
Today:
A mostly cloudy but dry start to the day. Sunny spells at times through the morning but with isolated showers from the late morning onwards. Fresh winds developing but feeling pleasant in the sun. Maximum temperature 23 °C.
Tonight:
Any lingering showers ease to leave a dry, partly cloudy evening. Remaining partly cloudy with clear spells overnight and dry for most areas. Feeling cooler. Minimum temperature 10 °C.
Tuesday:
Partly cloudy and dry to start but with good sunny spells. Isolated showers may develop but remaining dry for most areas. Feeling cooler in fresh winds. Maximum temperature 21 °C.
Outlook for Wednesday to Friday:
Patchy rain across the area for a time on Wednesday but clearing to a fine and dry Thursday. More unsettled on Friday with rain and then showers. Fresh winds.
Updated: