Tonbridge-Weather.org.uk

JANUARY 2015 daily and monthly summary

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JANUARY 2015
February

January 2015 monthly summary stats
* Compared to site averages 1985 - 2013.
‡ SUN:
From February 2014, bright sunshine hour totals are estimated from observation only, and corroborated to some extent by the nearest UKMO stations.
THW = Shaded Heat Index calculated with cooling/warming effect of wind and humidity to give an apparent temperature.

   DAILY STATS JANUARY 2015
 
TEMPERATURE ºc
HUMIDITY
SUN ‡
PRESSURE
RAINFALL
WIND SPEED
DIRECTION
 WEATHER
 NOTES
DATE
Low
(21-09h)
High
(09-21h)
Temp at 14.00z
RH %
at 14.00z
Dewpoint ºc
at 14.00z
Bright
sun hrs
hPa   †
at 14.00z
Day Total
(mm)
Average
(mph)
Max Gust
(mph)
Dominant
(Compass)
 Precipitation
 type etc ‡
                       
1st
3.7 10.0 8.4 91 7.0 0.0 1028.1 F 0.0 4.9 23 SW  Cloudy
2nd
8.1 12.3 9.1 59 1.5 5.2 1032.1 RS 0.6 3.3 23 SW  Rain night am.
3rd
2.6 8.3 7.4 98 7.1 0.0 1014.6 F 13.0 0.7 9 N  Rain
4th
1.1 2.2 1.9 95 1.2 0.0 1037.1 ST 0.0 0.9 8 SW  Overcast, mist
5th
0.8 9.7 9.7 89 7.9 0.0 1028.2 F 0.0 0.7 8 SW  Overcast
6th
7.0 9.9 9.3 90 7.7 0.2 1018.8 RS 0.6 1.8 13 SW  Rain pm
7th
-1.4 8.9 8.7 79 5.2 0.5 1023.5 F 0.4 3.2 22 SW  Rain
8th
8.1 11.0 9.0 88 7.1 2.4 1021.8 RQ 19.2 3.8 21 SW  Rain
9th
6.9 14.2 12.3 80 8.9 2.0 1018.3 F 0.4 6.5 28 SW  Rain night am
10th
11.5 13.1 10.5 63 3.7 0.3 1015.0 RQ 0.4 5.7 27 SW  Rain shower am
11th
3.3 8.4 7.8 68 2.3 4.7 1024.3 FS 0.0 4.6 23 SW  Sunny am
12th
7.2 11.2 10.6 92 9.4 0.0 1009.6 F 8.4 6.6 24 SW  Rain pm
13th
7.6 8.8 7.9 88 6.1 3.5 1002.1 FS 12.0 4.4 21 SW  Rain
14th
2.6 8.4 6.6 64 0.2 5.2 1009.4 RS 7.6 4.2 23 SW  Rain night pm
15th
7.1 10.6 7.8 83 5.1 0.7 991.2 RS 15.4 6.4 31 SW  Rain am
16th
3.6 4.8 4.6 93 3.5 0.6 1004.9 RS 3.8 2.3 17 SW  Rain am
17th
-2.7 5.9 5.6 83 2.9 2.7 1012.2 F 0.0 1.2 10 SW  Fair
18th
0.7 4.3 4.3 88 2.5 0.0 1011.3 ST 1.2 0.3 6 N  Rain am
19th
-0.7 3.3 3.2 83 0.6 0.3 1013.3 F 0.0 0.7 10 N  Cloudy
20th
-2.5 3.7 3.1 89 1.4 2.2 1010.3 FS 0.0 0.6 11 SE  Cloudy
21st
1.7 3.2 3.1 94 2.2 0.0 1007.7 ST 1.2 0.8 9 ESE  Drizzle am
22nd
0.6 4.6 4.3 73 -0.1 0.6 1020.9 RS 0.0 0.5 8 N  Cloudy
23rd
-3.8 7.1 4.9 76 1.0 5.0 1025.3 F 1.6 1.3 15 SW  Rain night pm
24th
3.3 8.2 7.0 67 1.3 6.3 1027.5 RS 3.2 2.7 17 NNE  Rain night am
25th
-0.6 7.9 7.8 74 3.4 0.3 1029.7 F 0.0 1.8 12 SW  Cloudy
26th
6.9 10.3 9.4 72 4.6 0.2 1022.4 ST 0.0 2.5 15 SW  Cloudy
27th
2.4 8.9 8.9 74 4.5 2.2 1026.1 F 0.0 1.7 11 SW  Cloudy
28th
6.3 10.0 6.8 78 3.3 1.1 1000.9 FS 2.0 5.2 28 SW  Rain am & pm
29th
2.2 6.3 6.2 68 0.7 3.1 980.2 FQ 1.4 4.0 20 SW  Hail & snow eve.
30th
1.0 5.6 5.5 79 1.8 1.2 979.9 FS 2.6 2.1 11 SW  Rain am
31st
0.2 4.3 3.2 91 1.8 0.0 984.7 RS 2.2 2.7 15 N  Rain pm
                         
‡ SUN: Sunshine hours are calculated approximately and solely from solar radiation readings, but note that the solar sensor's exposure to sunshine is rather limited. The sensor receives less than 60% of total possible sunshine exposure this month, and there is no allowance for sunshine by visual observation only, so the figures above can be very significantly less than the actual daily sunshine duration.
† Barometer trend (previous 3 hours) : F = falling, ST = steady, R = rising; Q = quickly, S = slowly
Weather Notes use METAR codes: OVC = overcast; SHRA = rain showers; '+' = heavy; CAVOK = no cloud below 5000 ft & visibility> 10 km & no fog, precipitation or snow; SN = snow; RASN = Rain and snow

1st
LP 997 hPa Outer Hebrides, HP 1039 hPa SW France. A rather dull day except for a short spell in mid-morning, occasional spots of light drizzle.
2nd
A windy night with a spell of light rain in the early hours. The highest temperature recorded before dawn and the passage of a cold front. Sky clears durig the morning to give a long period of sunshine.
3rd
LP 1014 hPa tracks E across southern England. Long period of rain starting around 04.00 and clearing by 13.30, mainly light/moderate. Remaining overcast and dull throughout the day.
4th
Misty at first; remaining overcast, murky and dull all day.
5th
Another overcast and rather dull day.
6th
An overcast and dull morning with spots of light drizzle. A short spell of rain in early afternoon as cold front passes and sky clears towards the end of the day.
7th
LP 940 hPa Iceland, HP 1033 hPa Switzerland. A short spell of light rain in the morning with quick temperature rise after ground frost. Some brightness in the morning but becoming overcast again in the early afternoon and breezy with light drizzle in the night.
8th
Rain, heavy at times starting just after 07.00 and ending shortly after midday from a "wave" front moving eastwards. Sky clears around 13.00 to give a long sunny spell in the afternoon.
9th
A little rain during another windy night. The day is bright with some sunny spells, feeling mild, but becoming overcast in mid-afternoon. Temperature rises in the evening to give the second highest reading for January in the site records.
10th
LP 952 hPa N of Shetland Islands. The night is again very windy with some light rain /drizzle Short spell of showery rain in mid-morning as a cold front passes across. Mainly cloudy with a little brightness in the afternoon.
11th
LP 975 hPa Iceland, HP 1038 hPa Biscay. A bright and sunny morning. Cloud starts to build a little after midday giving a cloudy end to the day.
12th
LP 945 HPa North of Shetland Islands. Overcast, windy and rather dull with intermittent drizzle in the morning. More persistent rain moves across from the west in the afternoon and after a brief interruption continues into the next day.
13th
LP 966 HPa south of Iceland. Persistent rain, heavy at times. continues through the night and early morning until a cold front clearance just after 09.00. A long sunny spell from mid-morning with a couple of brief heavy rain showers in the middle of the day followed by a couple of sunny intervals.
14th
LP 956 hPa S of Iceland and W of Ireland. A bright start with patchy cloudy clearing after 09.00 to give a long sunny period. Becoming cloudy in mid-afternoon. Rain arrives from the west around 19.30 and continues overnight.
15th
LP 945 hPa Outer Hebrides. A very wet and windy night with rain continuing into mid morning. Cloud clearing to give a few short sunny intervals and a rain shower in the afternoon.
16th
LP 969 hPa NW of Shetland. A heavy rain shower around 06.30 and spell of steady rain in mid morning. Cloud very slowly thins and clears to give a brighter end to the day.
17th
A frosty start, bright morning with a long sunny spell and a brief light rain shower. After a cloudier period brightening again in the afternoon with a couple of sunny spells.
18th
An overcast and damp start with light rain and drizzle. Cloud breaks a little in the afternoon but doesn't clear until dusk.
19th
Mainly overcast with a little brightness in the middle of the day before the overcast returns for the afternoon.
20th
An area of cloud moves across in mid-morning bringing a brief shower of light snow. Becoming a bright day but more cloud prevents more than a couple of longish sunny spells in the morning and a few sunny intervals in the afternoon.
21st
A very dull and overcast day with drizzle in the morning, sleety for a time.
22nd
A cloudy but day but bright at times with a short spell of sunshine in the middle of the day.
23rd
A frosty start, intervals of hazy sunshine at first with cloud thinning from late morning to give a long sunny period through most of the afternoon. A spell of rain late in the night as warm front passes.
24th
Further rain overnight in the early hours from cold front passage. A clear start with some patchy cloud appearing from midmorning but giving long sunny spells.
25th
A cloudy but fairly bright day with a couple of sunny intervals.
26th
Cloudy and sometimes overcast with a few spots of light rain. Cloud cover only breaks for a couple of short sunny intervals in early afternoon.
27th
A bright morning with a long sunny spell. Becoming cloudy from mid-afternoon.
28th
LP 971 hPa Iceland, HP 1042 hPa Azores. Overcast morning with rain from warm front, followed in the afternoon by squally rain from cold front, sky clears from mid-afternoon.
29th
LP 956 hPa SW Norway & 967 hPa WNW of Outer Hebrides. A bright morning with some long sunny spells. Becoming cloudy from early afternoon. A heavy and squally shower of graupel (soft hail) in late afternoon/early evening from passage of trough giving a covering of 1cm very quickly. Followed by a spell of light snow.
30th
LP 975 hPa London - a "Polar Low" tracking SEwards from NW Scotland overnight. A spell of light rain during the rush hour. Hail covering from previous evening largely melted away. After the rain clears, a bright morning with some sunny intervals followed by a cloudy afternoon.
31st
LP 974 hPa east of Shetland. A rather miserable Saturday with a mix of drizzle, sleet and snow in mid-morning followed by a longer spell of rain in the afternoon..