Members October Stats/averages

[SP1986]

Surprised this hasn't been started yet...

I'll kick off with mine.

It was a month characterised by high maximums and minimums, a very warm start and a mild finish.

In my area we didn't get the low minimums in the midst of the month that most places had, which had an impact on the finishing values.

My stats seem to correlate quite well with the Midlands average (+3.1C above average)

October

Mean Maximum temperature: 16.5C

Mean Minimum temperature: 11.0C

Overall Mean temperature: 13.75C (new personal record)

Monthly Rainfall Total: 63.2mm

Rainfall Days: 17

Max Daily Rainfall: 9.3mm

Highest daily maximum temperature: 27.6C

Lowest daily maximum temperature: 11.3C

Highest daily minimum temperature: 17.3C

Lowest daily minimum temperature: 5.9C

Days of ground frost: 0

Days of air frost: 0

Days of falling snow: 0

Days of lying snow: 0

I can't be sure whether local record were broken, however the Bidston temperature series has the previous October mean record as 13.3C in 1995, and this has certainly been beaten by Liverpool (EGGP) and Hawarden.

Compared to the October 71-00 average (10.4C), October 2011 comes in at 3.35C above the average. It is unknown whether this has been surpassed locally, given that Bidston observatory ceased taking records in 2002.

[Aaron]

Mean Maximum: 14.1°C

Mean Minimum: 7.9°C

Mean Temperature: 11°C

Highest Temperature: 28.3°C (1st)

Lowest Temperature: 0.4°C (20th)

Lowest Maximum: 9°C (18th)

Highest Minimum: 14.0°C (1st)

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Precipitation: 40.9mm

Days with rain: 15

Most in one day: 6.3 mm (25th)

Max rainfall rate: 23.4mm/hr (25th)

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Max Pressure: 1030.7mb (14th)

Min Pressure: 992.1mb (25th)

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Average humidity: 84.2%

Maximum humidity: 100% (numerous days)

Minimum humidity: 31% (1st)

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Days with ground frost: 2

Days with air frost: 0

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Average Dew Point: 8.6°C

Highest Dew Point: 16.5°C

Lowest Dew Point: -1.4°C

Not far from average temperature wise, still mild but nothing at all exceptional bar the first few days.

[Zenarcher]

Castlebay Isle of Barra October 2011

Highest Temperature 15.5°C

Lowest Temperature 5.8°C

Average Temperature 11.4°C

Total Rainfall 147.8mm

Highest Humidity 98%

Lowest Humidity 54%

Average Humidity 87%

Highest Average Wind Speed 45mph

Average Wind Speed 20mph

Highest Gust 72mph

Highest Pressure 1024.3mb

Lowest Pressure 983.6mb

Lowest Wind Chill -4.0°C

Highest Dew Point 13.2°C

Lowest Dew Point -1.5°C

Average Dew Point 9.3°C

[johnholmes]

Cantley October 2011

Milder than average with the record temperatures at the end of September continuing into the first 3 days of October.

Values in brackets are long term values in C

Mean=13.2(10.5)

Avge Max=17.1(14.3) highest=29.6C 1st and coldest day=12.3C on 18th

Avge Min=9.4(6.8C) warmest night=17.0C on 3rd and coldest=1.3C on 20th

1 ground frost, no snow, no hail but 1 day with thunder

rainfall 23.6mm wettest=4.8mm on 8th; 11 days with 0.2mm or more and 8 with 1.0mm or more

[Optimus Prime]

A warm month but not as warm as 2005 or 2006 (13.8c and 13.9c respectively) The frequency of cold days and nights was considerably greater than 2005 or 2006 (about the same as 2009) but such was the warm start, the average was always too high for it to ever recover back to near normal

Mean Max 17.6c (+1.6c)

Mean Min 9.4c (+2.9c)

Mean 13.5c (+2.1c)

Highest Maximum 26.1c (1st)

Lowest Maximum 12.6c (21st)

Lowest Minimum 0.3c (16th)

Highest Minimum 16.0c (8th)

[mikeocarroll]

Summary for October 2011 - near Llandrindod Wells, Mid Wales

Temperature (°C):

Mean (1 minute) 11.2

Mean (min+max) 11.1

Mean Minimum 7.1

Mean Maximum 15.1

Minimum -2.6 (20th)

Maximum 26.8 (1st)

Highest Minimum 15.3 (2nd)

Lowest Maximum 9.9 (26th)

Air frosts 5

Rainfall (mm):

Total for month 123.6mm

Wettest day 21.9mm (24th)

Rain days 20

Pressure (mb):

Maximum 1031.0 (14th)

Minimum 987.3 (24th)

Quite wet here especially in the last week of the month. Some cold nights under high pressure, but otherwise mild.

[Andy Bown]

October 2011 was both the warmest and driest October since I began recordings.

Of the 60mm of rain, 42.5mm fell within the period 24-27 October!! Although there were more rain days than dry days, the majority were showery or drizzly.

Average max = 15.94c (Highest = 23.9c on 1st Oct)

Average min = 9.75c (Lowest = 1.4c on 20 Oct)

Mean = 12.84c

Dry days = 12

Rain days = 19

Rainfall = 60mm

[Teesdale]

Mild, drier than average month. Expectional warmth on first day, no real cold.

Mean 9.4C

Mean max 12.3C

Mean min 6.7C

Max 24.1C

Min -0.2C

Highest min 12.4C

Lowest max 7.5C

Rainfall 89.4mm

Rain days 22

[cheeky_monkey]

Stats for Edmonton Alberta

Ave max = 11.6c

Ave Min = -3.6c

Mean = 4.2C

Highest Max = 17.5c Oct 18

Lowest Min = -10.4c Oct 16 & 24

Rain = 6.6mm

so pretty average if slightly on the cool side..dry month..statisically October is the driest month of the year in these parts.

[Styx]

_{Main averages}

_{Maximum average: 17.1 ( -0.1 below 1961-90 average )}

_{Minimum average: 8.2 ( equal to 1961-90 average )}

_{Rainfall: 62.2mm ( 0.5mm below 1882-2010 average )}

_{Doesn't get much closer to the average than that.}

_Extremes

_{Highest maximum 29C ( Record 35 for October )}

_{Lowest maximum 11C ( Record 6 for October )}

_{Highest minimum 17C ( Record 20 for October )}

_{Lowest mimum 3C ( Record 0 for October )}

_{Wettest day 11mm}

_{Highest wind gust 85km/hr ( 63m/ph )}

[TonyH]

October, Llanwnnen, Lampeter, Ceredigion

Very mild, average rainfall

1^st: Record breaking warmth, maximum 26.4c, national (29.9c), and welsh (28.2c), new heat records for October. The night had also been very warm, minimum of 17c. Sunny.

2^nd/ 3^rd: Warm with sunny intervals and a few showers.

4^th – 8^th: Much cooler and unsettled; mostly cloudy with rain and showers, heavy at times. Maximum of just 12.4c 7^th, so a drop of 14c in a week!

9^th – 12^th: Very mild, mostly cloudy and windy at times, with a little rain or drizzle at times. Nights especially mild, being 12-14c, more like what it should be day in October.

13^th – 15^th: High pressure to the east brought up a warm southerly flow: Reached 19.6c on the 13^th, rather cloudy although a sunny 15^th.

16^th – 20^th: Unsettled with rain and showers at times, with hail. Turned cool and windy, sunny intervals also.

21^st / 22^nd: Dry, average temperatures

23^rd – 27^th: Very mild, then average. Very unsettled and wet, 30mm rain on the 24^th.

28^th: First air frost of autumn, minimum of -0.2c, quite late this year, as it can occur in September.

29^th- 31^st: Became very mild and quite windy, with rain at times.

Stats

Total rainfall: 139.4mm

Wettest day: 16.8mm 23^rd

Rain days >0.2mm: 24

Wet days >1.0mm: 21

Days of heavy rain >10mm: 4

Mean temperature: 12.7c

Mean Max: 16.1c

Mean Min: 9.2c

High max: 26.4c 1^st

Low Max: 10.5c 19^th

High min: 17.1c 1^st

Low min: -0.2c 28^th

Air frost: 1

Ground frost: 2

Mean RH: 89%

High RH: 100% various

Low RH: 50% 1^st

Predominant wind directions: SSE

Mean wind speed: 1.9mph

Mean pressure: 1016mbar

Max pressure: 1030mbar 1^st

Min pressure: 983mbar 24^th

Days with:

Hail: 2

Gale: 0

Thunder: 0

Fog: 0

Fog at 0900: 0

[Corrigan87]

From other peoples posts, it seems that to work out the overall mean for the month you simply add the mean max and min and divide by 2. Isn't this rather inaccurate? In December the night is far longer than the day so the average for the day will be closer to the min than the max.

Probably quite sad I've worked out how to weight max and min for each month but it makes a big difference and is far more accurate.

October was incredibly warm with a brief interlude mid month when max temps were slightly below average and there were some nights approaching freezing. Also quite dry, just 28mm.

Mean max 16.0

Mean min 9.4

Overall average 12.2

Highest max 28.7 (2nd)

Lowest max 11.0 (18th)

Highest min 15.7 (3rd)

Lowest min 0.7 (18th and 20th)

[SP1986]

Corrigan, as long as everyone is has the bar at the same height it probably doesn't matter.

As I've always known for us amateur enthusiasts, it's a+b/2. It may not be accurately weighted, but it does seem to generally concur with recorded CETs

[reef]

Hedon, East Yorkshire.

October 2011

Warmest Max: 27.3°C (on 01/10/11) - New record

Coldest Max: 11.2°C (on 19/10/11)

Warmest Min: 15.7°C (on 03/10/11) - highest since 1985

Coldest Min: 2.2°C (on 20/10/11)

Average Max: 15.8°C (+2.1°C Above 1981-2010 Average)

Average Min: 9.2°C (+1.0°C Above 1981-2010 Average)

Overall Average: 12.5°C (+1.5°C Above 1981-2010 Average)

Rain: 39.2mm (84% Of Normal)

Wettest Day: 12th (12.0mm)

Sunshine: 128 hours (121% Of Normal)

Air Frosts: 0

Sleet/Snow Falling: 0 days

Snow lying at 0900: 0 days

Dry Days: 15

Wet Days: 16

Days With Rain >1.0mm: 9

Thunderstorms: 1

Year 2011 So Far (Jan - Oct)

Warmest Max: 29.7°C (on 27/06/11)

Coldest Max: 2.2°C (on 03/01/11)

Warmest Min: 16.5°C (on 27/06/11)

Coldest Min: -3.3°C (on 21/01/11 & 29/01/11)

Average Max: 15.3°C (+1.3°C Above 1981-2010 Average)

Average Min: 8.1°C (+0.4°C Above 1981-2010 Average)

Overall Average: 11.7°C (+0.8°C Above 1981-2010 Average)

Rain: 299.0mm (66% of Normal)

Wettest Day: 08/08/11 (22.8mm)

Sunshine: 1552 hours (114% of Normal)

Air Frosts: 12

Sleet/Snow Falling: 3 days

Snow lying at 0900: 0 days

Dry Days: 130

Wet Days: 173

Days With Rain >1.0mm: 76

Thunderstorms: 23

The warmest October since 2006. The weather in the first week was exceptional, with an average of 16.2°C. Both the 1st and 3rd exceeded 25°C, the first time two days in October have managed to do so. The 1st was very warm indeed, with a new record max of 27.3°C - beating 1985 by over a degree and higher than the September record set in 1999. 4 of the first 5 days set new date records. The high min on the 3rd of 15.7°C was the warmest since 1985, the last time such an unusual warm spell occured in October.

Unsuprisingly the month consisted of a very warm first half, but was somewhat countered by an average second half. After the warm and sunny first week it became rather unsettled for a time. South-westerly winds brought overcast conditions and persistent rain from the 8th-12th, with much of the month's rain falling during this period. It then turned cooler, drier and sunnier by mid-month. The 14th and 15th were clear and sunny throughout. The nights of the 18th and 19th were the coolest in the calm and clear conditions. A rather benign second half was then capped with two rather warm but dull final days.

Overall, an unexceptional month but with a very notable record-breaking spell at the start. Very similar in many respects to 1985.