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Thunderstorms and heatwave conditions
Thunderstorm warnings continue across much of the UK until Monday, 17th August, with a risk of impacts from heavy rain, flash flooding, lightning and hail.
Read moreCulmore (County Londonderry) weather
Find a forecast
Forecast days
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Today. Maximum daytime temperature: 21 degrees Celsius; Minimum nighttime temperature: 16 degrees Celsius. Fog changing to sunny intervals by late morning. Sunrise: 06:05; Sunset: 21:01. UV: Moderate; Pollution: Low; Pollen: Moderate.
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Sunday 16 August. Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 14 degrees Celsius. Cloudy. Sunrise: 06:06; Sunset: 20:59. UV: Moderate; Pollution: Low; Pollen: Low.
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Monday 17 August. Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 14 degrees Celsius. Cloudy. Sunrise: 06:08; Sunset: 20:57. UV: Moderate; Pollution: Low; Pollen: Moderate.
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Tuesday 18 August. Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 14 degrees Celsius. Cloudy changing to sunny intervals by lunchtime. Sunrise: 06:10; Sunset: 20:54. UV: Moderate; Pollution: Low; Pollen: Moderate.
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Wednesday 19 August. Maximum daytime temperature: 19 degrees Celsius; Minimum nighttime temperature: 15 degrees Celsius. Cloudy. Sunrise: 06:12; Sunset: 20:52. UV: Moderate; No pollen data.
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Thursday 20 August. Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 14 degrees Celsius. Light showers changing to sunny intervals by late morning. Sunrise: 06:14; Sunset: 20:50. UV: Moderate;
Six day forecast for Culmore
Today (15 August 2020)
| Time | Now | 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 symbol |
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| Chance of precipitation | 10% | 20% | 10% | <5% | 10% | 10% | 10% | 10% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% |
| Temperature (°C) |
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
15°
|
16°
|
18°
|
19°
|
20°
|
20°
|
20°
|
20°
|
20°
|
20°
|
20°
|
19°
|
19°
|
18°
|
17°
|
17°
|
| Feels like temperature (°C) | 14° | 14° | 14° | 14° | 14° | 14° | 14° | 14° | 15° | 16° | 18° | 19° | 20° | 20° | 20° | 20° | 19° | 19° | 19° | 18° | 18° | 18° | 17° | 17° |
| Wind direction and speed (miles per hour) |
NE
3
|
NE
5
|
ENE
6
|
ENE
4
|
ENE
3
|
ENE
3
|
NE
4
|
ENE
5
|
ENE
6
|
ENE
6
|
E
5
|
E
5
|
ENE
5
|
ENE
7
|
ENE
8
|
ENE
9
|
NE
10
|
NE
10
|
NE
9
|
NE
8
|
NE
8
|
ENE
6
|
ENE
6
|
ENE
6
|
| Wind gust (miles per hour) | 7 | 8 | 9 | 7 | 5 | 5 | 7 | 8 | 8 | 8 | 6 | 7 | 8 | 9 | 11 | 12 | 14 | 15 | 15 | 14 | 13 | 11 | 11 | 10 |
| Visibility | M | P | P | M | VP | VP | VP | VP | M | G | VG | G | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | G |
| Humidity | 99% | 99% | 99% | 98% | 98% | 99% | 99% | 99% | 97% | 92% | 88% | 85% | 81% | 80% | 79% | 78% | 77% | 75% | 75% | 76% | 78% | 80% | 84% | 87% |
| UV | - | - | - | - | - | - | - | 1 | 1 | 2 | 2 | 3 | 4 | 5 | 5 | 4 | 4 | 3 | 2 | 1 | 1 | - | - | - |
Sunday (16 August 2020)
| Time | 00:00 | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|---|
| Weather symbol |
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| Chance of precipitation | <5% | <5% | 10% | 10% | 10% | 10% | 10% | 10% | 40% |
| Temperature (°C) |
17°
|
16°
|
16°
|
16°
|
17°
|
18°
|
18°
|
17°
|
16°
|
| Feels like temperature (°C) | 17° | 16° | 16° | 16° | 16° | 17° | 17° | 16° | 15° |
| Wind direction and speed (miles per hour) |
NE
5
|
ENE
4
|
ENE
5
|
ENE
6
|
E
8
|
ENE
9
|
ENE
9
|
ENE
9
|
E
8
|
| Wind gust (miles per hour) | 8 | 7 | 7 | 8 | 12 | 14 | 15 | 14 | 12 |
| Visibility | G | G | G | G | VG | VG | VG | VG | G |
| Humidity | 88% | 91% | 92% | 92% | 85% | 80% | 77% | 79% | 86% |
| UV | - | - | - | 1 | 2 | 4 | 3 | 1 | - |
Monday (17 August 2020)
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
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| Chance of precipitation | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% |
| Temperature (°C) |
15°
|
15°
|
15°
|
16°
|
17°
|
17°
|
16°
|
15°
|
| Feels like temperature (°C) | 14° | 14° | 14° | 15° | 16° | 16° | 16° | 15° |
| Wind direction and speed (miles per hour) |
ENE
7
|
E
7
|
E
7
|
E
8
|
ENE
8
|
ENE
9
|
ENE
8
|
ENE
6
|
| Wind gust (miles per hour) | 12 | 11 | 12 | 13 | 15 | 16 | 13 | 10 |
| Visibility | G | G | G | VG | VG | VG | VG | VG |
| Humidity | 91% | 94% | 94% | 86% | 82% | 80% | 85% | 92% |
| UV | - | - | 1 | 3 | 5 | 3 | 1 | - |
Tuesday (18 August 2020)
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
| Chance of precipitation | 10% | 10% | 10% | 10% | 10% | 40% | 40% | 10% |
| Temperature (°C) |
15°
|
15°
|
15°
|
16°
|
17°
|
17°
|
17°
|
15°
|
| Feels like temperature (°C) | 15° | 15° | 15° | 16° | 17° | 17° | 16° | 15° |
| Wind direction and speed (miles per hour) |
ESE
5
|
E
4
|
ENE
3
|
WSW
4
|
WSW
6
|
NE
8
|
NW
7
|
WSW
7
|
| Wind gust (miles per hour) | 7 | 6 | 6 | 9 | 12 | 14 | 12 | 11 |
| Visibility | G | M | G | G | G | VG | G | G |
| Humidity | 94% | 97% | 97% | 90% | 83% | 84% | 88% | 94% |
| UV | - | - | 1 | 3 | 5 | 3 | 1 | - |
Wednesday (19 August 2020)
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
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|
|
|
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|
| Chance of precipitation | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 20% |
| Temperature (°C) |
15°
|
14°
|
14°
|
16°
|
18°
|
18°
|
18°
|
16°
|
| Feels like temperature (°C) | 14° | 14° | 14° | 15° | 16° | 16° | 16° | 14° |
| Wind direction and speed (miles per hour) |
WSW
6
|
SW
6
|
SSE
6
|
SSE
9
|
SE
10
|
SE
12
|
ESE
12
|
SE
14
|
| Wind gust (miles per hour) | 10 | 10 | 10 | 15 | 18 | 21 | 20 | 23 |
| Visibility | G | G | G | G | VG | VG | VG | VG |
| Humidity | 95% | 96% | 96% | 84% | 75% | 74% | 79% | 86% |
| UV | - | - | 1 | 3 | 4 | 3 | 1 | - |
Thursday (20 August 2020)
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
| Chance of precipitation | 20% | 40% | 40% | 40% | 60% | 40% | 40% | 10% |
| Temperature (°C) |
16°
|
16°
|
16°
|
16°
|
16°
|
17°
|
17°
|
16°
|
| Feels like temperature (°C) | 13° | 13° | 13° | 14° | 14° | 14° | 15° | 14° |
| Wind direction and speed (miles per hour) |
SE
15
|
SE
15
|
SE
14
|
S
12
|
SSW
15
|
S
14
|
SE
13
|
SSE
14
|
| Wind gust (miles per hour) | 24 | 23 | 22 | 22 | 26 | 25 | 22 | 23 |
| Visibility | G | M | M | M | VG | VG | VG | VG |
| Humidity | 89% | 89% | 91% | 86% | 73% | 73% | 77% | 82% |
| UV | - | - | 1 | 2 | 4 | 3 | 1 | - |
Northern Ireland weather forecast
Headline:
Dry, sunny and very warm on Saturday.
This Evening and Tonight:
It will be a mostly sunny evening then staying dry with clear spells overnight. Some low cloud and fog will develop later tonight. Winds staying light. Minimum temperature 14 °C.
Saturday:
A cloudy, misty start in some places. This will gradually disperse to leave another dry, warm and sunny day. A few showers may arrive from the south later in evening. Maximum temperature 25 °C.
Outlook for Sunday to Tuesday:
Cloudier with a few showers on Sunday and Monday. The showers possibly heavy and slow moving on Tuesday.
Updated:
UK long range weather forecast
The beginning of this period is likely to be generally unsettled with showers and longer spells of rain at times, potentially becoming heavy in places. There is also a chance that there could be some further thundery weather, although this would most likely be confined towards the east and southeast of the UK. It is likely to be windier than of late, especially in the south and west where there is also a risk of gales. Temperatures should start rather warm for many, despite the spells of unsettled weather. However, temperatures may cool slightly by the end of this period with freshening winds from the northwest likely to create a more widespread risk of gales.
Updated:
Although confidence is low for this period, it is likely that conditions will become more changeable with drier and brighter days interspersed with periods of rain and strengthening winds. Temperatures should be around the average for this time of year. Towards the end of this period, there are some tentative signs that high pressure could begin to dominate, especially across the south of the UK, with a return to more settled conditions.
Updated:
