September Month Weather Reports 2007

[Zenarcher]

Post your reports from september here.

Edited September 30, 2007 by weathermaster

[Zenarcher]

Castlebay Barra September 2007

1st to 2nd cloudy dry

3rd sunny

4th rain

5th fog

6th sunny

7th drizzle

8th cloudy

9th mist

10th to 11th sunny

12th cloudy

13th rain

14th sunny

15th to 16th rain

17th sunny

18th to 19th rain

20th 21st cloudy

22nd 23rd rain

24th to 28th sunny

29th to 30th cloudy

Min Temp 4.3c

Max Temp 18.8c

Min Humidity 56%

Max Humidity 94%

Min Wind Chill -6.4c

Max Wind Chill 18.8c

Low Pressure 985mb

Max Pressure 1030mb

Max Wind Speed 32.8mph

Rainfall 56.5mm

Edited October 1, 2007 by weathermaster

[Polar Continental]

Stanton Station: South Derbyshire (nr. Burton upon Trent.) Lat. 52°46'N Long. 1°36'W Ht. 74m A.M.S.L.Grid Ref: SK 26500

September 2007 Report.

By Paul Carfoot.

Apart from a little light rain recorded on the 2nd the first two weeks in to September were dominated by high pressure and it was dry with a good deal of sunshine here, with daytime temperatures mostly slightly above average, although some clear nights gave low minimums for early September, -0.5c on the 4th with a touch of ground frost, the first of the season.

The 16th saw a change as low pressure took control to the north of the UK. Rain arrived here late on the 16th producing just a trace, but more rain in the form of showers produced 2mm on the 17th.

It also became noticeably cooler as winds swung from the SW to NW.

With a clear sky on the night of the 18th the minimum temperature fell to 2.0c here with another ground frost.

By the 19th the daytime temperatures had recovered to average, but with cloudy nights and now SW winds the minimums were well above average, with a notably mild night on the 20th, minimum only 14.7c. The unsettled conditions continued with more significant rain being recorded here on the 21st with 8mm over just 1 and half hours.

More wet days followed and a remarkably mild night on the 24th, with a temperature of 16c around 4am, but a cold front pushed through shortly afterwards and the temperature fell 5c in 5 hours to 11c by 09:14, so the overnight minimum not reflecting the warmth of the previous hours.

The period from the 25th to the end of the month was rather unsettled with a little rain at times and also on the cool side as winds turned more northerly and later north easterly.

Summary.

A dry, warm and sunny start for the first half the month with only 1mm of rain being recorded here during the first 16 days. The second half was more unsettled with a little rain and saw a gradual cool down with some chilly nights and a couple of ground frosts. The mean temperature came in slightly above average at 14.1c + 0.4c above the CET average. Rainfall total 27mm.

Stats for September 2007

Mean maximum temperature = 18.1c

Mean minimum temperature = 10.0c

Mean temperature = 14.1c + 0.4c above the 1971-2000 CET average.

Warmest day on the 6th = 24.2c

Coldest day on the 26th = 12.3c

Warmest night on the 6th = 15.5c

Coldest night on the 18th = 2.0c

Minimum Grass Temperature on the 18th = -2.5 c

Ground Frosts = 2

Air frost = 0

Fog Observed = 1 on the 22nd. (Not at normal observation time, this was dawn event)

Days of Rain, with 1mm or more = 7

Wettest Day 23rd = 13mm

Days of snow = 0

Days of lying snow = 0

Thunder heard / Thunderstorms = 0

Rainfall total = 27mm

Rain total this year = 541mm

[Andy Bown]

The stats below are for September 2007 from Westbury, Wiltshire.

This is the coolest September that I have recorded (first was 2003), most likely due to the cool down in the final week. It was 2.02c cooler than last September. Conversely it was the driest September recorded, with just 35.5mm of rain (30mm of which fell on the 24th/25th!).

Average max = 19.70c (highest = 25c on 7th & 13th)

Average min = 9.63c (lowest = 4c on 18th & 27th)

Mean = 14.66c

Dry days = 16

Rain days = 14 (a number with drizzle or just the odd light shower)

Rainfall = 35.5mm

[jmackenz]

A sunny start and end to the month here in NE Scotland but otherwise fairly dull and disappointing. Very briefly:

Mean Temperature 11.9°C, 0.2°C higher than the 11.7°C historic average.

Minimum Temperature 2.9 °C , on the 18th.

Maximum Temperature 22.3°C, on the 7th.

Total Rainfall 55.1mm, 13.2mm down on the 68.3mm average (80.7%).

Average Sunshine Hours were 3.2 hrs per day, 0.7 down on the 3.9 hrs per day average (82.6%).

See under "Complete Weather History - Data Archive" on Garioch Weather website for further information:

http://www.gariochweather.org.uk/

[Osbourne One-Nil]

Average daily maximum, 16.2c (ten year average, 16.9c)

Highest daily maximum, 21.8c (6th)

Lowest daily maximum, 9.4c (26th)

Average daily minimum, 7.8c (ten year average, 8.8c)

Highest daily minimum, 14.5c (6th)

Lowest daily minimum, -0.1c (18th)

MEAN TEMPERATURE, 12.0c (ten year mean, 12.9c)

Total rainfall, 60.2mm

Wettest day, 21.2mm (24th)

No of wet days (0.2mm and above), thirteen.

Highest wind gust, 41mph (16th)

[reef]

Hull, East Yorkshire.

September 2007

Warmest Max: 23.6°C (on 07/09/07)

Coldest Max: 11.6°C (on 26/09/07) - Coolest since 1994

Warmest Min: 16.2°C (on 06/09/07)

Coldest Min: 5.9°C (on 18/09/07)

Average Max: 18.2°C (Equal to 1971-2000 Average)

Average Min: 11.3°C (+0.9°C Above 1971-2000 Average)

Overall Average: 14.7°C (+0.4°C Above 1971-2000 Average)

Rain: 41.0mm (79% Of Normal)

Wettest Day: 24th (18.6mm)

Air Frosts: 0

Days with Snow: 0

Snow lying at 0900: 0 days

Dry Days: 16

Wet Days: 14

Days With Rain >1.0mm: 7

Thunderstorms: 0

Year 2007 So Far (Jan - Sep)

Warmest Max: 24.1°C (on 05/08/07)

Coldest Max: 2.9°C (on 23/01/07)

Warmest Min: 17.3°C (on 04/08/07)

Coldest Min: -2.7°C (on 08/02/07)

Average Max: 15.5°C (+1.0°C Above 1971-2000 Average)

Average Min: 8.3°C (+1.3°C Above 1971-2000 Average)

Overall Average: 11.9°C (+1.2°C Above 1971-2000 Average)

Rain: 595.8mm (145% Of Normal)

Wettest Day: 25/06/07 (97.8mm)

Air Frosts: 9

Days with Snow: 6

Snow lying at 0900: 1 day

Dry Days: 134

Wet Days: 139

Days With Rain >1.0mm: 93

Thunderstorms: 23

A month of two halves, the first was warm, dry and and sunny. The second was cold, wet and windy. The first 15 days saw no measurable rain whatsoever. The temperature averaged 16.6°C, some 2°C above average for the time of year. Strangely though, there were no excessively warm days, with 23.6°C being the highest on the 7th - the lowest September high maxima since 2002.

The 16th then heralded a change to much cooler conditions as winds switched to the north. The 17th and 18th were rather cold days, reaching 13.6°C and 13.9°C, with minima being well into single figures. The morning of the 18th saw the coldest reading of the month at 5.9°C. It then turned milder for a time, but it was shortlived. The 25th saw a second northerly, more potent than the first. The 26th - 29th saw 4 consecutive days below 15°C, the coldest of which was the 26th, when it reached only 11.6°C - the lowest such reading in September since 1994.

Most remarkable was the temperature of the second half, it averaged only 12.9°C, almost cancelling out the excessively warm start. The 21st August - 16th September also saw a 27 day long dry spell, with no measurable rain. Overall an interesting month, though slightly disappointing in that it contained no thunderstorms.

[Summer of '47]

The first three weeks of the month was characterised by fine and dry weather thanks to dominant high pressure in the mid Atlantic, although temperatures were unexceptional and interrupted by just one short cool interlude. It became increasingly windy and the last week was rather cool and wet. Rainfall for September was 39% of average, inside the driest quartile since recording began in 1984, with half the monthly rain total falling on the 24th.

---------------------------------------------------------------------------------------------------------------------

Monthly Mean: 14.6 ºC

Average max: 19.3 ºC ( 0.2C ABOVE average )

Average min: 10.8 ºC ( 0.3C ABOVE average )

Highest max: 24.2 ºC ( 6th )

Lowest max: 12.7 ºC ( 26th )

Lowest min: 6.3 ºC ( 30th )

Highest min: 15.9 ºC ( 7th )

No.of Days with max < 20 ºC: 15 days

No.of Days with max >= 25 ºC: 0 days

Low Wind Chill: 5.7 ºC ( 25th )

Low THW Heat Index: 5.7 ºC ( 25th )

High THW Heat Index: 24.5 ºC ( 6th )

High THSW Sun Index: 30.2 ºC ( 6th )

Lowest RH%: 34 % ( 12th )

Lowest Dewpoint: 15.6 ºC ( 9th )

Highest Dewpoint: -0.5 ºC ( 18th )

Rain total: 22.2 mm ( 39% of Average )

Wettest day: 11.4 mm ( 24th )

Rain Days ( measurable ): 10 days

Rain Days ( >= 1.0mm ): 3 days

High Rain Rate: 18.5 mm/hr ( 25th )

Days with Thunder 0 days ( 7th )

EvapoTranspiration Total: 57.3 mm

Wind Speed Average: 1.9 mph

Wind Speed high gust: 24 mph ( 24th )

Wind Dominant Direction: SSW ( 25% ) followed by N, SW, NNW

Mean Barometer: 1019.8 hPa

Low Barometer: 1003.4 hPa ( 14th )

High Barometer: 1031.4 hPa ( 25th )

High Solar Radiation 1065 w/m2 ( 5th)

Sunshine Hours 116.2 Hours **

Sunniest Day: 8.3 Hours ( 11th ) calculated with limited sensor exposure, estimate c. 12hrs actual daily total

** calculated with limited sensor exposure, estimate 145 hrs actual monthly total ( Near average )

* average at this site 1984 - 2006

Full daily stats here: http://www.tonbridge-weather.org.uk/2007/sep2007.htm

[johnholmes]

A dry month with above average temperatures again, especially the average maximum.

Mean temp=14.8c=+0.9C on long term figures

Average max=19.5=+1.3C on long term figures

Average min=10.0=+0.5C on long term figures

Highest daytime value=25.9C on 6th, lowest=11.9C on 26th.

Lowest min=3.8C on 30th with warmest night on 10th with 15.1C

Rainfall= 19.6mm with wettest day 24th with 9.2mm

(note that these values are probably 20% too low)

No fog, thunder, air/ground frost.

Edited October 5, 2007 by johnholmes