2011 Weather

Home ] Up ] 2005 Weather ] 2006 Weather ] 2007 Weather ] 2008 Weather ] 2009 Weather ] 2010 Weather ] [ 2011 Weather ] 2012 Weather ] 2013 Weather ] 2014 Weather ] 2015 Weather ] 2016 Weather ] 2017 Weather ]

 

Click here to read Monthly Entries

ANNUAL SUMMARY FOR 2011

Overall

Several records have been broken in this unusual year, it being the driest on record with just 535.2mm of rain just 70% of normal, (the previous record being 551.9mm in 1975), and the second mildest year with a mean temperature of 11.2C (beaten only by 11.6C in 2006). 
Consequently there have been only 21 airfrosts (average number is 49 each year, previous lowest was 31 in 2007), only one day with snow and the 2nd fewest number of fog days on record.

 

By Month

Jan
A dull month with few sunny days. Rainfall was 76% of normal. 1cm snowfall on morning of 7th.

Feb
A very mild month with many cloudy days, minimum temps averaging 3.3C above normal 
(2nd highest in 56 years), the mean 2.5C above normal (3rd highest). 


Mar
8th mildest March in last 56 years. 
Rainfall occurred on just 4 days, the fewest in 56 years, and monthly rainfall was just 15.2mm, the 2nd lowest


Apr
April was exceptionally mild and dry. 
New records set for MeanMax 18.7C, Mean 13.1C, MeanMin 7.4C, and LowMin 3.2C. HighMax 25.6C was 2nd highest.
New record for lowest rainfall, just 3.1mm and lowest number of rain days (just 3). 


May
Temps and rainfall both slightly above average. 

June
Overall mean temps and rainfall only slightly below normal.

July
A dry and slightly cooler July than average. 

Aug
August was dry with average mean temp 0.2C lower than normal

Sep
A pleasant month, fairly dry and a very warm.
2nd highest HiMax 27.5C .   2nd highest Mean 15.6C 
Useful rain 3rd-6th, 10th and 20th but total only 58% of normal.

Oct
Rainfall only 69% of normal.     A very mild month statistically more like Sept than Oct.   
Very warm 1st-3rd , remaining warm until 17th. Cold morning 1.7C on 20th with ground frost.

Nov
A warm month, more like October than November.  Mean temp 9.2C was 2nd highest. 
Although the max temp was not exceptional, the min temp 1.9C was the highest on record here.
Rainfall was below normal,  cumulative Jan-Nov only 468mm, the lowest on record here. 
Thunderstorm on 3rd with short duration downpour of 6.2mm. 
Earls High School 1km away was struck by lightning on 3rd, 3 times around 1311 lunchtime. 


Dec
A mild month with 8th highest mean temp, and setting a new rcord for highest lo-min temp -1.1C.
No snowfall.  No fog reported (unusual as only 9 years have not had any). 
Just 3 air frosts,  making it the 5th fewest in 56 years, and 8 ground frosts which is the 7th fewest. 
-----------------------------------------------------------------------------------------------

Annual figures

TEMPERATURE

15.1  mean max (C)    +1.2 diff from av (C)
7.3  mean min (C)    +1.4 diff from av (C)
11.2 mean (C)           +1.3 diff from av (C)

  28.8 high max (C) on 26 Jun
 0.8 low max (C) on 20 Jan
17.5 high min (C) on 27 Jun
-6.4 low min (C) on 31 Jan

RAINFALL

535.2 rain total (mm)   70.0% of av 
  146 raindays (no. of days with 0.2mm or more)
 107 wetdays (no. of days with 1.0mm or more)
21.4 most in a day (mm) on 7 May

SNOWFALL

The year produced snowfall of 8 cm on 7Jan

PRESSURE

Mean annual pressure 1014.5mb.
1040.8mb max pressure on 23 Mar
 979.9mb min pressure on 13 Dec

FROSTS
There were 73 airfosts ( normally 51), 5 foggy mornings , average 20), and 7 days with thunder (average is 11).


THUNDER 
7 days when thunder heard 22 Apr, 6 May, 26 May, 8 Jul, 10 Jul, 26 Aug, 3 Nov

VISIBILITY 

Fog dates 20 Jan,15 Mar, 28 Mar, 8 Apr, 20 Nov

HUMIDITY
83.5 mean Relative Humidity at 0900

 

Monthly Entries:

January 2011 February 2011 March 2011

A dull month with few sunny days. 
Max temp slightly below normal although min temp normal.
Mild from 13th to 16th reaching a pleasant 12.6C, coldest 19th-22nd and 28th-31st. Rainfall was 76% of normal, most falling between 7th and 16th.
Just 1cm snowfall on morning of 7th. Patchy fog on 20th remained all day.
Airfrosts 3th-4th, 7th, 19th-22nd, 28th-31st.
An unspectacular January!

6.1 mean max (C) 
-0.7 diff from av (C)
1.3 mean min (C) 
0.0 diff from av (C)
3.7 mean (C)
-0.4 diff from av (C)
12.6 high max (C) on 13th 
0.8 low max (C) on 20th 
9.6 high min (C) on 14th 
-6.4 low min (C) on 31st 

50.2 rain total (mm)
76.0 % of av 
14 raindays (with >=0.2mm)
10 wetdays (with >=1.0mm)
12.9 most in a day (mm) on 7th


11 days with air frost 

1 day with 1cm snow falling on 7th
1 day with 50% snow cover at 0900
1 day with fog for much of day on 20th

A very mild month with many cloudy days, minimum temps averaging 3.3C above normal (2nd highest in 56 years), the mean 2.5C above normal (3rd highest). 
Mildest days 23-25th, 11-12th, 4-7th, and coolest nights 1st and 8th, both 
with airfrosts, and 15-16th. 
Rainfall above average, most falling in second half of the month, keeping the ground very wet, and foggy or misty between 17th and 23rd. 
A few more cheerful sunny days on 8th, 12th, 18th. 

9.1 mean max (C) 
+1.7 diff from av (C)
4.3 mean min (C) 
+3.3 diff from av (C)
6.7 mean (C)
+2.5 diff from av (C)
13.9 high max (C) on 24th 
4.3 low max (C) on 20th 
10.6 high min (C) on 5th 
-3.2 low min (C) on 1st 

59.9 rain total (mm)
128 % of av 
14 raindays (with >=0.2mm)
11 wetdays (with >=1.0mm)
14.2 most in a day (mm) on 18th

2 days with air frost on 1st and 8th

3 days with fog on 21st, 22nd and 23rd

After a cool start with air frosts on 5,7-8, temperatures were mostly above normal after 9th, with only slight air frosts on 14,19. 
Temps exceeded 18C on 23-25, and it was the 8th mildest March in last 56 years.
Rainfall occurred on just 4 days, the fewest in 56 years, and monthly rainfall was just 15.2mm, the 2nd lowest (only beating 7.2mm in 1961). The only significant rain fell on 12 and 30.
Mean pressure was 1021.6mb, the 7th highest. 3 foggy days on 15-16 and 28. There were 15 predominantly sunny days, giving some pleasant March days.

11.8 mean max (C) 
+1.5 diff from av (C)
3.4 mean min (C) 
+0.7 diff from av (C)
7.6 mean (C)
+1.1 diff from av (C)
18.4 high max (C) on 25th 
4.9 low max (C) on 3rd 
9.1 high min (C) on 30th 
-3.2 low min (C) on 5th 

15.2 rain total (mm)
28 % of av 
4 raindays (0.2mm or more)
3 wetdays (1.0mm or more)
7.9 most in a day (mm) on 12th

5 days with air frost on 5th, 7-8th, 14th and 19th
3 days with fog on 15-16th, 28th

April 2011 May 2011 June 2011

April was exceptionally mild and dry. 
New records set (for 1956 to present) for MeanMax 18.7C, Mean 13.1C, MeanMin 7.4C, and LowMin 3.2C. 
HighMax 25.6C was 2nd highest (only beaten by 26.6C in 2007). 
New record for lowest rainfall, just 3.1mm (previous record was 3.3mm in 1957),and lowest number of raindays (just 3). 

No frosts recorded. 
Temperatures good for growers, but watering cans have had a busy time!

18.7 mean max (C) 
+5.3 diff from av (C)
7.4 mean min (C) 
+3.4 diff from av (C)
13.1 mean (C)
+4.4 diff from av (C)
25.6 high max (C) on 22nd 
11.6 low max (C) on 4th 
11.9 high min (C) on 2nd 
3.2 low min (C) on 12th 

3.1 rain total (mm)
5 % of av 
3 raindays (with >=0.2mm)
1 wetdays (with >=1.0mm)

no days with air frost 
1 day when thunder heard (22nd at 1700)
1 day with fog at 0900 (8th)

A mixed month with 15 good sunny days and just a few duller ones, most rainfall occurring 6-7th and 26-30th. Temps and rainfall both slightly above average. Mean temp was 9th highest (in last 56 years) and min temp 7th highest. 2 thunderstorms, more significant one from 2100 to 2140 on 6th, and a few rumbles at 1340 on 26th. A frost free month, good for gardeners, but near misses on 4th (2.9C) and 14th (3.3C). 

17.6 mean max (C) 
+0.7 diff from av (C)
8.2 mean min (C) 
+1.3 diff from av (C)
12.9 mean (C)
+1.0 diff from av (C)
22.9 high max (C) on 6th 
13.9 low max (C) on 30th 
13.4 high min (C) on 8th 
2.9 low min (C) on 4th 

64.8 rain total (mm)
112 % of av 
11 raindays (with >=0.2mm)
11 wetdays (with >=1.0mm)
21.4 most in a day (mm) on 7th

0 days with air frost 
0 days with fog 

2 days thunder heard 
6th at 2100 and 26th at 1340 

Overall mean temps and rainfall only slightly below normal. Coolest day and night on 12th and very warm during 26th and 27th, but otherwise a fairly normal pleasant month with no extremes, although the high min temp of 17.5C at 5am on 27th was the fifth highest on record here, just short of the 18.2C recorded in 2005. Rainfall was spread out across the month, 16.5mm falling on 12th, 11.6mm on 24th and 6.7mm on 20th.

19.8 mean max (C) 
0.0 diff from av (C)
9.4 mean min (C) 
-0.5 diff from av (C)
14.6 mean (C)
-0.2 diff from av (C)
28.8 high max (C) on 26th
14.7 low max (C) on 12th
17.5 high min (C) on 27th
3.8 low min (C) on 12th

53.3 rain total (mm)
88 % of av 
18 raindays (days with >=0.2mm)
11 wetdays (days with >=1.0mm)
16.5 most in a day (mm) on 12th


July 2011 August 2011 September 2011

A dry and slightly cooler July than average overall. A mixed month with below average temperatures and some rain 5th-10th and 15th-22nd, otherwise some fine sunny and warm days. 
Wettest day was 10th with 8.0mm, 9.2mm fell between 5th-8th and 20.2mm rain fell between 15th-19th. There were brief thunder events late afternoon on 8th and 10th.

21.5 mean max (C) 
-0.4 diff from av (C)
11.4 mean min (C) 
-0.5 diff from av (C)
16.4 mean (C)
-0.5 diff from av (C)
25.9 high max (C) on 4th 
17.4 low max (C) on 18th 
16.0 high min (C) on 4th 
6.9 low min (C) on 1st 

39.2 rain total (mm)
67 % of av 
11 raindays (with >=0.2mm)
10 wetdays (with >=1.0mm)
8.0 most in a day (mm) on 10th

2 days thunder heard 
8th at 1715 and 10th at 1640 

August was dry with average mean temp 0.2C lower, mean max 0.6C lower and mean min 0.2C higher than normal. A warm start to the month from 1st to 3rd, again 19th-24th. Cool 8th, 18th and 26th-31st. Colder nights were 8.3C on 19th (the 7th highest low min in 56 years), 8.5C on 8th and 8.8C on 17th. 
Rainfall 62% of normal, 15mm falling on 24th and 12.4mm on 26th (with rumbles of thunder around 2030).
Few good sunny days for August.

20.8 mean max (C) 
-0.6 diff from av (C)
11.9 mean min (C) 
+0.2 diff from av (C)
16.3 mean (C)
-0.2 diff from av (C)
27.4 high max (C) on 3rd 
14.9 low max (C) on 29th 
16.4 high min (C) on 1st 
8.3 low min (C) on 19th 
41.5 rain total (mm)
62.6 % of av 
11 raindays (with >=0.2mm)
9 wetdays (with >=1.0mm)
15.0 most in a day (mm) on 24th

1 day thunder heard on 26th at 2030 

A pleasant month, fairly dry and a very warm and sunny end 27th-30th.
2nd highest HiMax 27.5C in last 56 years,beaten only by 28.4C in 2006.
2nd highest Mean 15.6C beaten only by 17.4C in 2006.

Useful rain 3rd-6th, 10th and 20th but total only 58% of normal.

19.7 mean max (C) 
+1.4 diff from av (C)
11.4 mean min (C) 
+1.8 diff from av (C)
15.6 mean (C)
+1.7 diff from av (C)
27.5 high max (C) on 30th 
16.4 low max (C) on 18th 
17.1 high min (C) on 10th 
6.1 low min (C) on 15th 

36.7 rain total (mm)
57.8 % of av 
12 raindays (with >=0.2mm)
8 wetdays (with >=1.0mm)
9.8 most in a day (mm) on 10th 

October 2011 November 2011 December 2011

A very mild month statistically more like Sept than Oct. Very warm 1st-3rd with high night temps also, remaining warm until 17th. Cold morning 1.7C on 20th with ground frost, narrowly avoiding air frost.

Rainfall 69% of normal, most was 
9.8mm on 5th, 8.6mm on 29th,
8.5mm on 27th, 7.9mm on 17th

15 days with useful amounts of sunshine, making it a very pleasant month overall.

16.4 mean max (C) 
+2.5 diff from av (C)
9.4 mean min (C) 
+2.5 diff from av (C)
12.9 mean (C)
+2.5 diff from av (C)
27.7 high max (C) on 1st 
10.8 low max (C) on 18th 
16.1 high min (C) on 3rd 
1.7 low min (C) on 20th 

56.3 rain total (mm)
68.8 % of av 
13 raindays (days with >=0.2mm)
11 wetdays (days with >=1.0mm)

A warm month, more like October than November. Mean temp 9.2C was 2nd highest (in last 56 years here), exceeded only by 9.7C in 1994. Although the max temp was not exceptional, the min temp 1.9C was the highest on record here.
Rainfall was below normal, and cumulative Jan-Nov only 468mm, the lowest on record here. Thunderstorm on 3rd with short duration downpour of 6.2mm. Earls High School 1km away was struck by lightning on 3rd, 3 times around 1311. 

11.6 mean max (C) 
+2.0 diff from av (C)
6.7 mean min (C) 
+2.8 diff from av (C)
9.2 mean (C)
+2.4 diff from av (C)
15.3 high max (C) on 13th 
8.3 low max (C) on 20th 
10.9 high min (C) on 4th 
1.9 low min (C) on 7th 

47.8 rain total (mm)
65.2 % of av 
15 raindays (days with >=0.2mm)
10 wetdays (days with >=1.0mm)
11.4 most in a day (mm) on 11th

1 day with thunder on 3rd around 1311
1 day fog on 20th

A mild month with 8th highest mean temp in 56 years records, and setting a new rcord for highest lo-min temp -1.1C, beating the previous record -1.2C in 1972. Temperatures normal until 12th, then cool spell before becoming mild from 22nd to 31st. Rainfall slightly below normal, most falling 12th-13th and 31st. No snowfall (true of about half the years) or fog reported (more unusually as only 9 years have not had any). With it being mild, there have been few air frosts, only 3 reported making it the 5th fewest in 56 years, and 8 ground frosts which is the 7th fewest. Some sunshine on 14 days, 17 remained sunless. 
Cumulative rainfall for whole of 2011 was only 535.2mm, just 70% of normal, making this year the driest here in the last 56 years.

8.3 mean max (C) 
+1.4 diff from av (C)
3.2 mean min (C) 
+1.6 diff from av (C)
5.7 mean (C)
+1.4 diff from av (C)
12.2 high max (C) on 8,21 
3.9 low max (C) on 16 
9.8 high min (C) on 26 
-1.1 low min (C) on 19 

67.2 rain total (mm)
93.2 % of av 
20 raindays (with >=0.2mm)
13 wetdays (with >=1.0mm)
17.8 most in a day (mm) on 12

3 air frosts on 17-19, and 8 ground frosts on 2, 5-6, 10, 14 and 17-19

 
     www.halesowenweather.co.uk                         email:  info@halesowenweather.co.uk