2013 Weather

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2013 Annual Summary

2013 as a whole had near normal mean temperature 9.8C. 
HiMax 31.6C on 1/8/2013 ranks 22nd highest daily max temp on record
HiMin 16.8C on 20/7/2013 ranks 55th highest daily min temp on record

 Annual Rainfall was 999.1mm, 131% of normal 764.5mm, 
making it the 3rd wettest year on record here, beaten only by 2012 and 1960.

 Daily rainfall of 38mm on 22/7/2013 ranks 23rd highest on record.
145 Wet days rank 10th highest on record.

57 days with airfrosts rank 8th fewest air frosts.
It is noted that of 10 years with fewest air frosts, all are since 2002, 
only 2010 absent from this block.

6 days experienced thunder, ranking 7th fewest.

21 days with snow falling gave total of 54.3cm of new snow, 
the greatest depth 21cm occurring on 23/1/2013.


Annual figures

13.6 mean max (C) , -0.3 diff from av (C)
6.0 mean min (C) , +0.1 diff from av (C)
9.8 mean (C), -0.1 diff from av (C)
31.6 high max (C) on 1/8 
-0.8 low max (C) on 18/1 
16.8 high min (C) on 20/7 
-4.4 low min (C) on 31/3 

999.1 rain total (mm), 131 % of av 
183 raindays (with 0.2mm or more)
145 wetdays (with 1mm or more)
38.0 most in a day (mm) on 22/7

21 days with snow falling 
20 days with 50% snow cover 

1014.2 mean pressure (mb) , -0.3 pressure anomaly (mb)
1041.0 max pressure at any time of day, on 25/11 
968.2 min pressure at any time of day, on 23/12 

The late frost of 15/4/12 and the early frost of 14/10/12 gave 182 frost-free days 

6 days with thunder heard 

87.0% at 0900

62.8 at 0900



January 2013 February 2013 March 2013

A mixed month!
Statistically mean temps were 0.8C below normal, and mean max temps 1.5C below normal, although the month fell into three parts.
It was mild and dry until 8th, cold 9th-25th with rain then snow 14th-23rd.
Lying snow from 18th-25th, deepest was 21cm on 23rd, but thawed quickly 26-27th.
Wet mild end to the month from 26th, with best sunny spells of the month, but very windy 29th-31st. 
New snowfall totalled 31.5cm, the 3rd highest in 58 years.

5.3 mean max (C) 
-1.5 diff from av (C)
1.2 mean min (C) 
-0.1 diff from av (C)
3.3 mean (C)
-0.8 diff from av (C)
12.6 high max (C) on 29 
-0.8 low max (C) on 18 
7.8 high min (C) on 6 
-4.2 low min (C) on 17 

94.5 rain total (mm)
143 % of av 
19 raindays (days with >=0.2mm)
16 wetdays (days with >=1.0mm)25 18 

14 days air frost, 5 ground frost 
6 days sleet/snow falling: 
1.5cm on 14
3cm on 17
12cm on 18
2cm on 19
8cm on 20
5cm on 23

9 days with 50% snow cover at 0900
between 18th and 26th,
greatest depth was 21cm on 23

1 day with fog at 0900 on 16
55.2 cloud cover percent
93.3 mean RH 

1012.4 mean pressure 
-2.2 pressure anomaly for month (mb)
1036.4 max pressure on 4
987.1 min pressure on 27

A cool month mean temp 1.4C below normal, half the nights having air frosts. Wet up to the 15th, dry after that, the total rainfall being just above normal. Most snowfall 1.5cm on 10th, 3cm on 11th, with light snow flurries on 5th, 12th-13th and 23rd. Most lying snow was 4.5cm on 11th, reducing to 2.5cm on 12th and 13th before the thaw. The 10th brought persistent rainfall from 0900, then turning to snow from 1815 through the evening and early hours. Brightest days were 16th to 19th, also pleasant on 28th, but many days remained cloudy and dull.

5.4 mean max (C) 
0.2 mean min (C) 
2.8 mean (C)
-1.4 diff from av (C)
9.9 high max (C) on 3 
0.4 low max (C) on 22 
3.7 high min (C) on 1 
-2.2 low min (C) on 19 

60.8 rain total (mm)
129.9 % of av 
12 raindays (days with >=0.2mm)
9 wetdays (days with >=1.0mm)
23.0 most in a day (mm) on 10 

14 days with air frost 
26 days with ground frost 
6 days snow falling 
0.5cm on 5
1.5cm on 10
3.0cm on 11
0.2cm on 12
1.0cm on 13
0.1cm on 23

4 days with 50% snow cover at 0900
0.5cm on 5
4.5cm on 11
2.5cm on 12
2.5cm on 13

0 day with fog 

67% cloud cover
89% mean RH 

1017.9 mean pressure 
1036.7 max pressure on 27
989.9 min pressure on 10

Seasonal Summary for
Winter 2013 (Dec,Jan,Feb)
Another wet season, the 3rd wettest in the last 58 years (the 3rd wettest Dec, the wettest Jan and the 10th wettest Feb).

Mean Max temp 6.0C, 
     1.0C below normal
Mean Min temp 1.1C, 
     0.2C below normal
Mean temp 3.6C, 
     0.6C below normal

Total rainfall 306.7mm for the season,
165.8% of normal.

March was a very cold and disappointing month, the mean temp 2.6C was the lowest since the 2.0C of 1962. The low max temp was 0.0C, the second lowest on record, 
beaten only by -0.6C in 1965. The mean max temp 5.3C was the lowest on record.

The mean temp was 3.9 deg below expectations, indeed this months mean min, mean
and mean max temps were 1.5 deg below a normal January!

17 nights had air frosts (third highest), and 25 ground frosts (highest on record).

A total of 16.5cm snow fell 20th-24th (the fifth highest) with accumulations 
up to 13cm by 24th, and >50% lying snow until 28th.
Rainfall including snow melt was 94.2mm (fifth highest for March).

5.3 mean max (C) 
-0.2 mean min (C) 
2.6 mean (C)
-3.9 diff from av (C)
14.2 high max (C) on 5 
0.0 low max (C) on 24 
5.1 high min (C) on 8 
-4.4 low min (C) on 31 

94.2 rain total (mm)
including melted snow
173 % of av 
12 raindays (days with >=0.2mm)
10 wetdays (days with >=1.0mm)
23.0 most in a day (mm) on 22 

17 days with air frost 
25 days with ground frost 

4 days snow falling 
1.0cm on 21, 4.0cm on 22
9.0cm on 23, 2.5cm on 24
snow flurries on 10,11,13,27,30

7 days with 50% snow cover
5.0cm on 22, 11.5cm on 23
13.0cm on 24, 12.5cm on 25
11.0cm on 26, 10.5cm on 27
9.0cm on 28

1 day with fog on 8th
66% cloud cover
87% mean RH 

1009.1 mean pressure 
1030.8 max press
ure on 1
987.3 min pressure on 17

April 2013 May 2013 June 2013

April was a cool, breezy and dry month with the 5th lowest LoMax temperature recorded in 58 years here, and was the 8th driest.  A cool start to the month with E/NE winds, temperatures recovering mid-month with a slight drop at the end of the month.The little rain that fell was between 11th-18th and 24th-28th. Windy mid-month.  Many days had worthwhile sunshine. Brief thunder on 27th at 1410.

12.1 mean max (C) 
3.4 mean min (C) 
7.7 mean (C)
-1.0 diff from av (C)
19.6 high max (C) on 23 
3.1 low max (C) on 1 
9.6 high min (C) on 25 
-3.5 low min (C) on 2 

19.5 rain total (mm)
31 % of av 
12 raindays (days with >=0.2mm)
9 wetdays (days with >=1.0mm)
4.0 most in a day (mm) on 13 

6 days with air frost 
11 days with ground frost 

thunder on 27th at 1410
54% cloud cover
82% mean RH 

1014.0 mean pressure 
1033.1 max press
ure on 20th
991.4 min pressure on 12th

May was cool, 1.1C below normal, breezy and wet.  Brighter and warmer at start of month, 16th, 19th, 25-27th and 31st. Cooler and duller 9th-12th, 20th-21st and 28th.  Persistent rainfall of 32.4mm on 14th, and 38.5mm over the three days 28th-30th contributed to a total monthly rainfall of 109mm, making it the 7th wettest May in last 58 years.  Windy on 9th, 13th, 22nd-24th. The mean pressure for the month was the 8th lowest on record.

15.5 mean max (C) 
6.1 mean min (C) 
10.8 mean (C)
-1.1 diff from av (C)
22.5 high max (C) on 7th 
10.2 low max (C) on 24th 
10.8 high min (C) on 8th 
1.5 low min (C) on 1st 

109.0 rain total (mm)
188 % of av 
20 raindays (days with >=0.2mm)
14 wetdays (days with >=1.0mm)
32.4 most in a day (mm) on 14th 

3 days with ground frost 
64% cloud cover
80% mean RH 
1011.2 mean pressure 
1026.2 max press
ure on 1st
983.6 min pressure on 15th

Seasonal Summary for
Spring 2013 (Mar,Apr,May)
Mean temp 7.0C,  1.6C below normal, the 3rd lowest in 58 years.

Lowest Max temp was 0.0C, the 2nd lowest on record.

Another wet season with rainfall 222.7mm, 130% of the normal 171mm, making it the 7th wettest spring here (following the 3rd wettest winter).

June was slightly cooler and drier than normal, the temperature rising during the
No air or ground frosts.
Wet periods 12th-15th (10.0mm rain on 14th), 19th-23rd, and 27th-28th (10.2mm on 27th).

Windy on 1st, and 23rd-24th. Sunniest days 1st-4th, 6th-9th, 19th, 25th-26th, 29th-30th. Brief thunder on 14th at 1300, and a sudden single clap of thunder on 20th at 2105.

19.5 mean max (C) 
9.7 mean min (C) 
14.6 mean (C)
-0.2 diff from av (C)
24.4 high max (C) on 19th 
15.3 low max (C) on 15th 
14.2 high min (C) on 19th 
5.9 low min (C) on 3rd 

53.1 rain total (mm)
87 % of av 
15 raindays (days with >=0.2mm)
12 wetdays (days with >=1.0mm)
10.2 most in a day (mm) on 27th 

0 days with ground frost 
65% cloud cover
80% mean RH 
1017.6 mean pressure 
1032.0 max press
ure on 3rd
1000.2 min pressure on 22nd

July 2013 August 2013 September 2013


July was a very dry and settled month until the early hours of 23rd when 38mm torrential rainfall and thunder arrived. Further significant rain fell 27th to 29th, with over 31mm on 27th. 
After three weeks anticipating a record dry month, the overall rainfall total was 104.8mm (179%, 8th highest in last 58 years). 
Mean temperature 19.7C was 2.8C above normal (3rd highest), the maximum recorded was 31.4C on 13th (6th highest), although it was hot or very warm from 7th onwards. Mean Max temperature was 25.9C (3rd highest, beaten only in 2006 and 1983). Lowest Minimum temperature was 9.6C (3rd highest).
Thunder was recorded on 23rd (at 0430, 0700 and 0830) and thunder with small hail on 29th (at 1500). 
Pressure was high from 4th to 22nd, reaching 1033.8mb on 8th (2nd highest).

25.9 mean max (C) 
13.5 mean min (C) 
19.7 mean (C)
+2.8 diff from av (C)
31.4 high max (C) on 13th 
16.8 low max (C) on 2nd 
16.8 high min (C) on 20th 
9.6 low min (C) on 2nd 

104.8 rain total (mm)
179 % of av 
9 raindays (days with >=0.2mm)
8 wetdays (days with >=1.0mm)
38.0 most in a day (mm) on 22nd 

0 days with ground frost 
47% cloud cover
75% mean RH 
1019.2 mean pressure 
1033.8 max press
ure on 8th
1000.3 min pressure on 28th


August was a warm and pleasant month, mean temperatures 0.9C above normal, ranking equal 7th highest in 58 years.  Rainfall was 89% of normal, 16.5mm of it falling on 15th, and 22.5mm falling 4th-5th.  There was one brief thunder event at 2145 on 2nd.

22.3 mean max (C) 
12.5 mean min (C) 
17.4 mean (C)
+0.9 diff from av (C)
31.6 high max (C) on 1st 
17.0 low max (C) on 13th 
15.9 high min (C) on 2nd 
8.1 low min (C) on 13th 

58.9 rain total (mm)
89 % of av 
12 raindays (days with >=0.2mm)
9 wetdays (days with >=1.0mm)
16.5 most in a day (mm) on 15th 

74% cloud cover
86% mean RH 
1016.2 mean pressure 
1029.6 max press
ure on 31st
1002.5 min pressure on 1st


Summer was warm, mean temperature 17.3C ranking 3rd equal in 58 years, beaten only in 2006 and 1995. Highest temperature was 31.6C, the 9th highest, and mean max was 22.6C ranking 5th highest.

Rainfall totalled 216.8mm, about normal for the season, with 36 rain days and 29 wet days


September had a pleasant and dry start and finish, but was cooler windier and wet from 6th to 19th.  It remained frost-free.

Overall the mean temperature was 0.4C above normal. Both the HiMax temperature 26.4C and the LoMin 5.1C rank 9th highest in 58 years here.

Rainfall only 83% of normal, ranking around the median value for Septembers. Aggregate rainfall from Jan to Sep is 647mm, the 10th highest on record for these months

18.4 mean max (C) 
10.1 mean min (C) 
14.3 mean (C)
+0.4 diff from av (C)
26.4 high max (C) on 4th 
11.1 low max (C) on 17th 
13.9 high min (C) on 24th 
5.1 low min (C) on 15th 

52.6 rain total (mm)
83 % of av 
12 raindays (days with >=0.2mm)
9 wetdays (days with >=1.0mm)
11.0 most in a day (mm) on 13th 

68% cloud cover
90% mean RH 
1014.9 mean pressure 
1029.7 max pressure on 1st
993.4 min pressure on 17th

0 days with ground frost

October 2013 November 2013 December 2013


October was 1.8C milder than normal, having the 8th highest Mean, the 4th highest LoMin and the 7th highest HiMin temperature in 58 years of records. 
Especially mild from 1st-9th.  
A new record for rainfall, 169mm is the highest I have recorded for October here, 206% of normal. 
Very wet from 11th-28th, the most falling was 24.5mm on 22nd following 16.8mm on 21st. Few really sunny days, 6th  and 24th delivering a worthwhile amount of sunshine. Windy periods 9th and 21st-23rd.  There was a pressure drop of 12mb in 6hrs in the early hours of 28th to 977.6mb as the “big storm” tracked across the south of England, although here we were spared damaging winds, although 26mm of rain fell.

Aggregate rainfall from Jan to Oct is 816mm, now the 4th highest on record for these months.

Overall, very wet and windy but mild.

14.9 mean max (C) 
9.5 mean min (C) 
12.2 mean (C)
+1.8 diff from av (C)
20.9 high max (C) on 8th 
9.6 low max (C) on 14th 
14.4 high min (C) on 4th 
4.2 low min (C) on 30th 

169.0 rain total (mm)
206 % of av 

22 raindays (days with >=0.2mm)
21 wetdays (days with >=1.0mm)
24.5 most in a day (mm) on 22nd  

76% cloud cover
95% mean RH 
1009.0 mean pressure 
1024.6 max pressure on 6th
977.6 min pressure on 28th

0 days with ground frost


Temperatures were close to normal but the 3rd week of November was cooler, so it was 0.9C below normal overall.
It was wet up to 14th, and again 17th to 23rd, with heavy rain at times on 6th and 20th.
Aggregated rainfall (Jan to Nov) has been 896mm so far, the 4th highest 11 month total on record here.
Pressure rose to 1041mb on 25th during the settled anticyclonic conditions at the end of the month.

8.9 mean max (C) 
3.0 mean min (C) 
5.9 mean (C)
-0.9 diff from av (C)
13.4 high max (C) on 6th 
5.3 low max (C) on 23rd 
8.1 high min (C) on 1st 
-2.1 low min (C) on 20th 

79.4 rain total (mm)
108 % of av 
18 raindays (days with >=0.2mm)
13 wetdays (days with >=1.0mm)
16.5 most in a day (mm) on 20th  

57% cloud cover
95% mean RH 
1017.1 mean pressure 
1041.0 max pressure on 25th
986.3 min pressure on 4th

4 days with air frost  
11 days with ground frost


Autumn was slightly milder than usual, with mean temperature 10.8C.  Highest temperature was 26.4C,  mean max was 14.1C, mean min was 7.5C, and lowest temperature was -2.1C.

Rainfall totalled 301mm, 143% of  normal for the season, with 52 rain days, 43 wet days  and 23 very wet days, all well above normal.

A mild month, mean temp 1.6C above normal. Both Mean 5.9C and MeanMax 8.8C rank 5th highest.
Both LowMax 5.3C, and LowMin –0.1C are the highest on record here, just beating 2011 values.
A brief air frost on 26th, but only just, -0.1C.  Ground frosts 5-6th, 11-12th, 17-20th, 23rd, 25-30th.

Rainfall 103.3mm  is 9th highest (143% of normal). Wettest days were 24.5mm on 23rd, 14.5mm on 18th, 9.0mm on 26th, 7.5mm on 21st and 7.5mm on 31st.
Pressure tended to fall  through the month, but the storm of 24th/25th gave a minimum reading of 968.2mb at 2300h on 23rd, having fallen abruptly from 1009mb in the early hours of 23rd, climbing again more slowly to reach 996mb at 1600h on 26th.

8.8 mean max (C) 
3.1 mean min (C) 
5.9 mean (C)
+1.6 diff from av (C)
12.1 high max (C) on 15th 
5.3 low max (C) on 24th 
6.8 high min (C) on 16th 
-0.1 low min (C) on 26th 

103.3 rain total (mm),143 % of av 
20 raindays (with >=0.2mm)
15 wetdays (with >=1.0mm)
24.5mm most in a day on 23rd  

62% cloud cover
91% mean RH 
1011.9 mean pressure 
1035.5 max pressure on 2nd
968.2 min pressure on 23rd

1 day with air frost  
15 days with ground frost

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