Page updated September 21, 2018 20:06
Link to August 2018..Link to October 2018

Data on this website may be freely used for personal and/or academic purposes only -but please do acknowledge Swanston Weather Site as source
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Swanston Weather Station
September 2018 (Means and totals to date are at foot of table)
 
  0900 GMT readings
 Daily  Readings (See notes at foot of page)
Weather in previous 24h & hours of air frost (to 0900 on date)
Date
Date
Pressure
(mb)
Temp (°C)
Relative
Humidity (%)
Wind Speed
(mph)
Wind
Direction
SoilTemp @ 20cm
(°C)
SnowDepth(cm) or
Pentlands, Lammermuirs, Moorfoots snowline(ft)
1Maximum Temperature (°C)
2Minimum Temperature (°C)
3Rainfall
(mm)

4GrassMin Temp
(°C)
5Sunshine (Hours)

Solar
Rad'n High
(W/m2)

7ET
(mm)
6Max Wind
Speed (mph)
1
1020.2
15.9
85
14
SW
14.5
20.3
13.6
0.0
11.0
1.59
882
2.4
28
Sunny periods 31st August. Cloudy am 1st
1
2
1019.4
18.6
84
9
S
16.0
21.8
14.6
5.8
13.0
2.31
802
2.2
33
Mainly cloudy 1st and am 2nd
2
3
1023.4
11.1
97
7
E
15.0
11.8
10.9
3.0
10.5
0.00
264
0.7
17
Mainly cloudy 2nd. Rain by 0600h 3rd
3
4
1025.0
11.7
88
3
WNW
14.0
17.1
8.2
0.1
6.4
11.83
844
2.2
11
Rain, drizzle and low cloud 3rd. Clearer skies am 4th
4
5
1023.7
14.0
77
4
W
14.0
18.5
9.2
0.0
4.9
7.39
737
2.5
23
Prolonged sunshine 4th. Clear skies am 5th
5
6
1015.8
10.7
80
5
NW
14.0
14.4
8.0
4.4
4.7
5.07
954
1.7
19
Sunny periods 6th. Clear skies am 6th
6
7
1011.4
10.3
93
5
WNW
13.5
15.8
7.3
0.1
5.9
2.29
870
1.7
21
Showers pm 7th and am 8th
7
8
1010.5
13.1
85
8
W
13.5
17.2
8.8
0.1
7.0
3.68
777
1.8
20
Mainly cloudy 7th and am 8th
8
9
1006.2
15.8
86
10
W
14.5
18.0
9.9
0.4
10.7
6.00
881
2.8
44
Sunny intervals 8th. Variable cloud am 9th
9
10
1011.9
12.2
83
13
W
14.0
15.3
10.3
6.0
8.0
1.59
1000
1.9
43
Sunny intervals pm 9th. Clear then cloudy am 10th
10
11
1009.1
12.4
76
20
W
14.0
15.7
10.6
0.0
9.8
8.90
758
3.2
49
Mainly cloudy 10th. Rain evening 10th and am 11th
11
12
1017.6
12.1
76
14
W
13.0
15.1
9.2
0.2
7.6
9.30
837
2.8
34
Sunny periods 11th, showers in vicinity. Clear am 12th
12
13
1014.9
11.5
86
16
WSW
13.0
14.1
9.4
0.7
7.8
1.78
635
2.1
38
Sunny periods 12th. Showers in vicinity. Clear am 13th
13
14
1010.9
11.9
88
12
W
13.0
13.7
10.4
6.1
9.2
1.27
722
1.3
33
Mainly cloudy 13th. Showers am 14th
14
15
1018.4
9.8
87
7
W
12.5
15.1
7.3
1.7
5.7
2.51
738
1.8
29
Heavy showers pm 14th. Clear overnight the cloudy am 15th
15
16
1006.1
13.4
87
14
W
14.0
15.3
12.0
1.0
10.6
3.48
629
2.3
48
Mainly cloudy 15th. Showers late pm 15th and am 16th
16
17
1009.5
12.3
83
8
SW
13.0
17.2
10.9
0.2
9.8
0.28
396
1.6
55
Shower midday 16th, sunny intervals pm. Turning cloudy am 17th
17
18
992.6
15.5
91
4
S
14.0
18.8
12.3
11.2
13.5
4.02
728
2.3
54
Cloudy 17th with light rain. Windy late pm/early am 17th/18th
18
19
990.4
12.6
92
18
SSW
13.0
15.4
10.7
4.8
10.0
2.55
626
2.2
60
Isolated heavy showers evening 18th and am 19th
19
20
1004.4
9.9
78
15
SW
12.0
12.7
8.1
5.1
6.9
5.14
555
2.0
40
Very windy with squally showers 19th. Clear am 20th
20
21
994.2
8.7
86
13
W
11.5
5.8
4.9
7.58
773
Sunny intervals 20th. Rain am 21st
21
22
 
22
23
 
23
24
 
24
25
 
25
26
 
26
27
 
27
28
 
28
29
                               
29
30
                               
30
31
                               
31
                                   
Total/
Mean
16.2
9.9
50.9
4.7
88.54
1000
41.7
60
 
Date
 
Pressure
(mb)
Temp
(°C)
Relative
Humidity
(%)
Wind
Speed (mph)
Wind
Direction
Soil Temp
at 20cm
(°C)
Snow Depth(cm)
or
Pentlands Snow line(ft)
1 Mean Maximum
Temperature
(°C)
2Mean Minimum
Temperature
(°C)
3Total Rainfall
(mm)


4GrassMin
Temperature
lowest
(°C)
5Total Sunshine
(Hours)
Solar
Rad'n highest
( W/m2)
7Total ET
(mm)
6Maximum
Wind Speed
(mph)
 
  0900 GMTreadings
Daily Readings (see notes below)  
   

 

Notes
1. For the 24 hours from 0900UTC* on the date to 0900UTC* on the following day. (The maximum temperature is generally in the afternoon*)
2. For the 24 hours ending at 0900UTC* on the date. (The minimum temperature is generally just after sunrise*)
*Where a maximum is overnight or minimum is during the day the figure is shown in italics. This often occurs in winter
3. For the 24 hours from 0900UTC* on the date to 0900UTC* on following day. SEPA = Scottish Environmental Protection Agency/UKMO 5" diameter gauge
4. For the period from sunset on previous day to 0900UTC* on the date
5.For the period sunrise to sunset on the date
6. For the period 0000UTC*-2400UTC* on the date i.e the Calendar Day
7. Total evapotranspiration on the date (in mm).
* UTC is Universal Time Coordinated. It has been adopted by the UK Met.Office in place of Greenwich Mean Time (GMT). When British Summer Time is in force UTC is BST minus one hour ,e.g.1000BST=0900UTC

 

 

 

 

 


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