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Weather warnings may have been issued

Heathrow (nearest observation site to Syon House)

Wednesday (Wednesday 17 January 2018)
12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00
Sunny day Sunny intervals Cloudy Cloudy Sunny day Clear night Partly cloudy night Cloudy Overcast Overcast Light shower night Light rain
Temperature (°C)
-5.2 ° -5.2 ° -5.2 ° 7.4 ° 6.9 ° 6.0 ° 5.6 ° 5.7 ° 5.6 ° 5.8 ° 5.8 ° 6.1 °
Show detail Show detail
Wind direction, speed & gust (mph) Expand
W 21 32 W 22 36 W 24 36 W 17 37 W 16 30 WSW 13 WSW 13 SW 13 SW 13 SSW 16 SSW 14 SSW 15
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) Expand
G G VG VG VG VG VG G G G G M
Humidity Expand
52% 99% 99% 55% 58% 66% 70% 73% 74% 74% 83% 90%
Pressure (hPa) Expand
1008 1009 1009 1009 1009 1009 1008 1006 1004 1001
Pressure Tendency (F = Falling, R = Rising, S = Steady) Expand
R R R R R R F F F F F F
Sunrise: 07:59 Sunset: 16:25 Moon phase: New
Thursday (Thursday 18 January 2018)
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
Drizzle Drizzle Light shower night Overcast Overcast Overcast Cloudy Partly cloudy night Sunny day Sunny day Sunny day Sunny day Cloudy
Temperature (°C)
7.3 ° 9.1 ° 10.2 ° 11.3 ° 11.6 ° 10.6 ° 9.9 ° 8.3 ° 7.1 ° 6.9 ° 7.2 ° 7.8 ° 8.9 °
Show detail Show detail
Wind direction, speed & gust (mph) Expand
SSW 24 37 SW 25 36 WSW 26 41 WSW 32 51 W 41 63 W 32 61 W 30 53 W 26 47 W 18 44 W 17 31 W 19 29 W 17 W 16
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) Expand
M G M VG G M VG E E E VG VG VG
Humidity Expand
93% 94% 90% 75% 65% 65% 57% 59% 64% 67% 67% 64% 64%
Pressure (hPa) Expand
998 995 993 992 992 993 995 998 1000 1001 1002 1003 1002
Pressure Tendency (F = Falling, R = Rising, S = Steady) Expand
F F F F F F R R R R R
Sunrise: 07:58 Sunset: 16:26 Moon phase: New

– = No Data

Issued at:

Extremes

London & South East England extremes

Parameter Location Value
Highest maximum temperature Shoreham 8.5 °C
Lowest maximum temperature Stowe 6.0 °C
Lowest minimum temperature High Wycombe -0.5 °C
Highest rainfall Alice Holt Lodge 1.0 mm
Sunniest Brize Norton 6.0 hours

UK extremes

Parameter Location Value
Highest maximum temperature Scilly St Marys 10.8 °C
Lowest maximum temperature Carterhouse 0.8 °C
Lowest minimum temperature Drumnadrochit -5.0 °C
Highest rainfall Glenanne 20.6 mm
Sunniest Wattisham 6.5 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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