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Heathrow (nearest observation site to Syon House)

Tuesday (Tuesday 12 December 2017)
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
Clear night Sunny day Sunny day Sunny day Sunny day Sunny intervals Cloudy Cloudy Overcast Overcast Overcast Overcast Overcast Overcast Heavy shower night Light rain
Temperature (°C)
-2.9 ° -1.9 ° 0.3 ° 1.6 ° 3.0 ° 4.1 ° 4.2 ° 3.6 ° 3.6 ° 3.1 ° 2.9 ° 3.8 ° 3.6 ° 4.9 ° 5.5 ° 6.1 °
Show detail Show detail
Wind direction, speed & gust (mph) Expand
W 7 W 8 S 5 SW 5 SW 5 W 6 S 7 S 7 SSW 8 S 7 S 8 S 8 S 6 S 9 S 7 S 9
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) Expand
M G G VG G E VG VG VG E VG VG E VG G M
Humidity Expand
88% 92% 85% 82% 79% 74% 76% 78% 77% 81% 82% 82% 84% 83% 90% 93%
Pressure (hPa) Expand
1008 1009 1009 1010 1010 1010 1010 1010 1010 1010 1010 1009 1009 1008 1007 1006
Pressure Tendency (F = Falling, R = Rising, S = Steady) Expand
R R R R R R F R R R F F F F F F
Sunrise: 07:57 Sunset: 15:52 Moon phase: Third quarter
Wednesday (Wednesday 13 December 2017)
00:00 01:00 02:00 03:00 04:00 05:00 06:00 07:00 08:00
Heavy rain Drizzle Heavy rain Drizzle Overcast Overcast Cloudy Overcast Overcast
Temperature (°C)
5.9 ° 6.6 ° 7.5 ° 7.8 ° 8.0 ° 7.3 ° 6.0 ° 5.3 ° 5.6 °
Show detail Show detail
Wind direction, speed & gust (mph) Expand
S 11 S 13 S 13 SSW 11 SW 9 W 11 W 9 W 7 W 9
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) Expand
M M M M VG G VG VG G
Humidity Expand
93% 98% 98% 99% 95% 89% 90% 92% 90%
Pressure (hPa) Expand
1005 1003 1002 1001 1001 1001 1001 1001 1001
Pressure Tendency (F = Falling, R = Rising, S = Steady) Expand
F F F F F F F R F
Sunrise: 07:58 Sunset: 15:52 Moon phase: Third quarter

– = No Data

Issued at:

Extremes

London & South East England extremes

Parameter Location Value
Highest maximum temperature St Catherines Pt. 10.1 °C
Lowest minimum temperature Benson -9.3 °C
Highest rainfall South Newington 2.4 mm
Sunniest Manston 6.1 hours

UK extremes

Parameter Location Value
Highest maximum temperature Scilly St Marys 10.7 °C
Lowest maximum temperature Fylingdales 0.2 °C
Lowest minimum temperature Shawbury -13.0 °C
Highest rainfall Capel Curig 23.2 mm
Sunniest Shoeburyness 6.6 hours

About extremes

Highest maximum temperature - (0900 to 2100 on the date shown)

Lowest maximum temperature - (0900 to 2100 on the date shown)

Lowest minimum temperature - (2100 on the previous day to 0900 on the date shown)

Highest rainfall -(2100 on the previous day to 2100 on the date shown)

Sunniest - (2100 on the previous day to 2100 on the date shown)

The information shown is initial data as it is received; observations are subject to final quality control after publication on this website. This is particularly the case for rainfall totals during snow events.

Issued at:

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