May 2007 Weather Reports

[Zenarcher]

Post your May reports here.

[Mark Bayley]

My Max temp 23.0c

My min temp 4.5c

My max humidity 98%

My min humidity 35%

[Summer of '47]

A normal May mixture of good and bad with temperatures generally around average and unexceptional. The main feature of the month was very cool and wet late spring Bank Holiday weekend conditions on 27th/28th, which raised rainfall levels rather above average for the month. The 28th with a daytime max of 7.7 ºC was the coldest day for any date in May since recording began at this site (just beating May 17th, 1996 in the awfulness stakes). Sunshine total was only around 75% of normal, with just 3 or 4 days bringing extended sunshine of 10 hrs or more.

Monthly Mean: 12.8 ºC

Average max: 17.3 ºC ( 0.1C BELOW average )

Average min: 9.0 ºC ( 0.7C ABOVE average )

Highest max: 25.5 ºC ( 24th )

Lowest max: 7.7 ºC ( 28th )

Lowest min: 4.1 ºC ( 15th )

Highest min: 14.4 ºC ( 25th )

No.of Days with max >= 20 ºC: 5

No.of Days with max >= 25 ºC: 2

No.of Days with air frost: 0 days

Low Wind Chill: 4.1 ºC ( 15th )

Low THW Heat Index: 3.9 ºC ( 15th )

High THW Heat Index: 25.3 ºC ( 24th )

High THSW Sun Index: 33.4 ºC ( 23rd )

Lowest RH%: 27 % ( 2nd )

Lowest Dewpoint: -0.6 ºC ( 2nd )

Highest Dewpoint: 14.5 ºC ( 25th )

Rain total: 61.4 mm ( 135% of Average )

Wettest day: 13.2 mm ( 28th )

Rain Days ( measurable ): 15 days ( +4 )

Rain Days ( >= 1.0mm ): 14 days

High Rain Rate: 24.4 mm/hr ( 12th )

Days with thunder 0 days

EvapoTranspiration Total: 74.0 mm

Wind Speed Average: 2.1 mph

Wind Speed high gust: 29 mph ( 8th )

Wind Dominant Direction: SSW ( 43% ) followed by NNW, N, W

Mean Barometer: 1010.1 hPa

Low Barometer: 993.5 hPa ( 11th & 27th )

High Barometer: 1023.0 hPa ( 23rd )

High Solar Radiation 1244 w/m2 ( 11th )

Sunshine Hours 119 Hours **

Sunniest Day: 10 Hours ( 2nd ) calculated with limited sensor exposure, estimate 12+ hrs actual daily total

** calculated with limited sensor exposure, estimate 160 hrs actual monthly total ( BELOW average )

* average at this site 1984 - 2006

http://www.tonbridge-weather.org.uk/2007/may2007.htm

[johnholmes]

figures for my site

Mean temp=12.7C(11.3)

Mean max=17.4(16.2) absolute max = 24.1 on 23rd with warmest night 14.4C on 24th

Mean min=8.0(6.4) absolute min = 3.9C on 30th with coldest day 10.0C on 27th

59.0mm with 20.4 as wettest on 13th; 0.2mm or more=20 days; 1.0mm or more=12 days

thunder on 1 day

fog on nil

no air or ground frost and no snow or hail

The last month with a mean temperature less than 0.5C above the long term mean for here was March 2006.

I'll do another post/thread about how many times and by how much above/below the long term since December 1999.

[The PIT]

Well taking advantage of having to come home because My Mother had another turn I've slapped the figures on my website.

One interesting thing I noticed the day time highs were the lowest since 1996 and continued the trend of recent Mays. Quite a reversal compaired to April.

Stevenson data can be found here http://www.sheffieldweather.co.uk/html/data_for_2006_7.html

Davis VP2 can be found here http://www.sheffieldweather.co.uk/html/2007_vp2_data.html

Summery of the month can be found here http://www.sheffieldweather.co.uk/html/las...ths_report.html

Long term trends http://www.sheffieldweather.co.uk/html/ave...55_onwards.html

Any mistooks drop me an email I won't sulk honest.

[Zenarcher]

May 2007

1st to 2nd sunny 10mph

3rd 18mph misty

4th to 5th 26mph and heavy rain

6th 55mph here and other places had 60mph and heavy rain

7th to 8th cloudy and breezy

9th to heavy rain 18mph gust and north of england had 45mph

10th light showers and 17mph and north of england had 55mph

11th light rain 10mph

12th to 13th cloudy with 15mph and england and wales had heavy rain with thunder

14th to 16th 10mph with rain

17th light rain foggy 14mph

18th 32mph with heavy showers and other places had 50mph

19th heavy rain

20th cloudy

21st to 22nd sunny with a cold wind 21mph

23rd to 26th cloudy with showers

27th windy but sunny

28th sunny and warm and then at 9pm a hail shower came

29th 30th cloudy with rain calm wind

31st 25mph in the morning then cleared up into a sunny day

Outdoor temp min 4.6c

Outdoor temp max 23.6c

Humidity min 49%

Humidity max 92%

Wind chill min -3.6c

Wind chill max 23.6c

Pressure min 978mb

Pressure max 1017mb

Gust 31.9mph

Rainfall 44.5mm

[Andy Bown]

I started measuring rainfall in January 2005, May 2007 was the wettest month I have had with 159mm comfortably beating the previous highest of 147.5mm (Nov 2006).

Average max = 16.48c (highest 25c on 23rd)

Average min = 8.12c (lowest = 2c on 29th)

Mean = 12.30c

Dry days = 11

Rain days = 21

Rainfall = 159mm (wettest 24 hour period was 43mm from 27th-28th, several days had 25mm+ too)

[Polar Continental]

May 2007 Report.

By Paul Carfoot.

The first week in to May continued as April with high pressure in charge, the weather here in Burton was dry sunny and warm.

On the 6th the high that had been with us for so long gave ground and allowed low pressure to approach the country from the Atlantic.

The weather in Burton turned unsettled and very breezy at times, but despite several fronts crossing the area between the 6th and 8th, little rain was recorded, less than 1mm. This all changed though by the 9th as pressure deepened further, I recorded 7mm on the 9th, but this was only the start as the weather became very unsettled indeed, and the rain continued for the next 7 days in a row. The 13th was particularly wet with a total of 20mm being recorded over a 9-hour period.

We had to wait until the 20th before high pressure eventually nudged up from the SW. The period from the 20th to the 24th was pleasantly warm with sunshine here, with the temperature peaking at 23.3c on the 23rd.

On the 25th the pressure began to fall as the high sank back towards the Azores.

By the 27th low pressure had taken fall control to the south of the country and with strong cold NE winds and continuous moderate rain the temperature only just made double figures at 10.4c here.

The cool unsettled conditions continued until the 30th with rather low night minimums and ground frost.

Finally the last day of the month was warmer as the cool winds from the North Sea were cut off, but still rather unsettled with short sharp heavy showers.

Summary.

In stark contrast to the settled and very dry April, a very unsettled and thoroughly wet month with 70mm more rain than April.

Stats for May 2007

Average maximum temperature = 16.6c

Average minimum temperature = 7.6c

Mean temperature = 12.1c + 0.8c above the CET average.

Warmest day on the 23rd = 23.3c

Coldest day on the 27th = 10.4c

Warmest night on the 17th = 12.3c

Coldest night on the 30th = +0.5c

Ground Frosts = 3

Air frost = 0

Days of snow = 0

Days of lying snow = 0

Thunderstorms = 0

Rainfall total = 79 mm

Rain total this year = 226mm

[I remember Atlantic 252]

may 2007 temps for my area

average maximum 16.5oC (april 16.4C)

average minimum 7.8C

highest maximum 24th 23.8C

lowest maximum 27th 9.3C

highest minimum 18th 12.2C

lowest minimum 30th 2.5C

3 days above 20oC 1st,23rd and 24th

2 days below 10oC 27th and 28th

3rd coldest day of may 07 was the unbelievable 4th at 11.3C max the north sea misty low cloud never lifted

off topic but im expecting our usual north sea misty low cloud tomorrow morning

[Often_Will]

May Statistics all somewhat unreliable due to problems with sensor, as it had technical problems, as well as the movement of the Summer sun meaning it fell directly on the sensor. Consequently all temperature data for May may as well be ignored.

Average Maximum Temperature: 18.5 [13 data sets missing]

Average Mimum Temperature: 6.0 [9 data sets missing]

Highest Indoor Temperature: 25.6 (3rd)

Lowest Outdoor Temperature: 1.0 (30th)

May Rainfall: 107mm

Maximum Rainfall: 25mm (13th)

Maximum Windspeed: 16.1mph (28th)

Maximum Pressure: 1019mb (23rd)

Minimum Pressure: 989mb (13th)

[jmackenz]

A wet month although about 70% of the rain fell in just 3 days.

Mean temperature was 9.8 °C, +0.8 up on average.

Minimum temperature was 1.8 °C, on the 27th.

Maximum temperature was 22.3 °C, on the 23rd.

The highest wind speed was 32 mph, on the 6th.

Total rainfall was 101.1 mm, 41.4mm higher than the 59.7mm average for May.

Average sunshine hours were 4.7 hrs per day, 84.6% of the average.

[reef]

Hedon, East Yorkshire.

May 2007

Warmest Max: 23.3°C (on 24/05/07)

Coldest Max: 5.0°C (on 30/05/07)

Warmest Min: 14.5°C (on 24/05/07) - highest on record

Coldest Min: 10.5°C (on 27/05/07) - lowest on record

Average Max: 16.6°C (+1.5°C Above 1971-2000 Average)

Average Min: 8.2°C (+1.3°C Above 1971-2000 Average)

Overall Average: 12.4°C (+1.4°C Above 1971-2000 Average)

Rain: 53.7mm (123% Of Normal)

Wettest Day: 13th (20.7mm)

Air Frosts: 0

Days with Snow: 0

Snow lying at 0900: 0 days

Dry Days: 12

Wet Days: 19

Days With Rain >1.0mm: 11

Thunderstorms: 0

Year 2007 So Far (Jan - May)

Warmest Max: 23.3°C (on 24/05/07)

Coldest Max: 2.9°C (on 23/01/07)

Warmest Min: 14.5°C (on 24/05/07)

Coldest Min: -2.7°C (on 08/02/07)

Average Max: 12.5°C (+2.4°C Above 1971-2000 Average)

Average Min: 5.3°C (+2.0°C Above 1971-2000 Average)

Overall Average: 8.9°C (+2.2°C Above 1971-2000 Average)

Rain: 182.4mm (83% Of Normal)

Wettest Day: 13/05/07 (20.7mm)

Air Frosts: 9

Days with Snow: 6

Snow lying at 0900: 1 day

Dry Days: 75

Wet Days: 76

Days With Rain >1.0mm: 49

Thunderstorms: 0

A mild, wet and dull month. The average temperature was exactly the same as May 2006, though the rainfall was substantially lower (May 2006 saw 92.1mm). It was also notable for being the first May since I began recording to have no minima below 5°C all month.

The first few days were dry, cool and cloudy as Northerly winds brought in cloud from the cold North Sea. It was then all change, as brighter and milder weather arrived from the south-west on the 5th. The 8th saw the end of a long dry spell. March 24th - May 8th (46 days) saw only 2.0mm of rain, the longest such dry spell since I began recording. The wettest day of the month was the 13th, which saw over 24 hours of rain and a total of 20.7mm.

The second half of the month saw warmer and sunnier weather. The 22nd and 23rd reached 22.1°C and 23.3°C with the temperature during the night falling no lower than 14.5°C - a new record. There was then abrupt change, as a southerly tracking depression dragged in cool air from the North-east. The 27th saw the lowest reading, reaching only 10.5°C, making it the coldest day since at least 1997.

Overall, another above average month, the 14th in a row and the 9th consecutive month with an anomaly of more than +1.0°C.

[Thundery wintry showers]

Stats for Cleadon, Tyne & Wear

Mean Max: 15.6 (+1.7)

Mean Min: 8.3 (+1.6)

Mean Temp: 11.9 (+1.7)

Warmest: 21.1C (24th)

Coldest: 4.5C (21st)

The mean max was higher than in relatively inland Newton Aycliffe, so it's quite possible that my back garden might still give rise to slightly anomalous readings on sunny days, though less so than before I moved the Stevenson Screen and added appropriate insulation on the top. The lack of cold nights was remarkable, with the minimum of 4.5C being the highest lowest temp for May since 1999.

Rainfall: 38mm

Days of thunder: 2

Days of hail: 1

Days of sleet/snow: 0

Fog: 0

Gales: 0

Overall a dull mild May, though surprisingly it ended up slightly drier than average. It started dry and cloudy with coastal stratocumulus, sunshine and showers (with a hailstorm on the 8th) during the second week, and then the third and fourth weeks were largely dull and unsettled. Thunder occurred early on the 27th, and there was also a distant rumble on the 31st.

[paul tall]

Ave max 15.2º

Ave min 7.9º

Mean 11.5º

Rain 25mm