Page updated September 30, 2020 11:54
Link to August 2020..Link to October 2020

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 2020 (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 Temp (°C)
2Minimum Temp (°C)
3Rainfall
(mm)

4Grass Min Temp
(°C)
5Sun (Hours)

Solar
Rad'n High
(W/m2)

7ET
(mm)
6Max Wind
Speed (mph)
1
1018.9
13.8
78
6
SSE
14.0
16.8
9.6
0.0
3.2
3.03
729
2.13
26
Sunny intervals 31st August. Clear skies am 1st September
1
2
1010.6
14.8
84
6
S
14.5
16.1
12.8
6.7
11.5
0.09
538
1.45
53
Sunny intervals 1st. Overcast and windy am 2nd, 36 mph. Turning millder
2
3
1005.5
15.6
81
8
SW
14.5
16.8
12.7
0.5
10.5
8.12
851
2.31
35
Rain and showers pm 2nd and early am 3rd. Gust to 53 mph 1212 GMT on 2nd
3
4
1012.0
13.6
78
8
SW
14.5
16.2
10.9
3.8
7.2
7.09
835
2.46
36
Sunny periods, occasional showers 3rd. Clear skies am 4th
4
5
1014.9
11.3
78
6
WSW
14.0
14.7
9.0
0.3
6.7
7.03
756
1.98
25
Sunny periods 4th, heavy shower 1400 GMT. Clear am 5th
5
6
1018.4
11.9
83
1
N
14.0
16.8
10.2
3.5
9.5
5.73
840
2.13
17
Sunny periods 5th. Light rain early am 6th then clearing
6
7
1012.4
13.1
91
10
SSW
14.5
17.2
11.1
0.1
9.4
0.17
469
1.52
39
Sunny periods 6th, rain and winds gusting to 35mph am 7th
7
8
1018.4
16.4
81
5
SW
14.0
21.8
12.7
1.4
10.4
9.59
870
2.59
41
Mainly overcast 7th, broken cloud am 8th
8
9
1017.6
12.9
81
7
WSW
15.0
16.2
10.8
0.0
8.3
9.00
879
2.41
32
Sunny periods 8th, showers late pm. Clear skies am 9th
9
10
1021.8
11.9
74
2
WSW
14.0
14.6
8.9
0.0
6.0
0.89
476
1.55
30
Sunny periods 9th. Clear am 9th, cloud later
10
11
1004.2
14.3
76
9
SW
14.0
15.5
10.5
1.3
9.1
4.07
577
1.73
43
Mainly cloudy 11th, clear evening. Turning cloudy am 11th
11
12
1009.5
11.7
81
8
SW
13.0
16.3
10.1
4.0
8.0
5.84
795
2.01
42
Sunny intervals 11th, broken cloud am 12th.
12
13
1011.0
16.2
85
10
SSW
14.0
18.8
10.9
0.1
9.4
3.92
645
1.73
51
Sunny periods 12th, rain late pm. Rain and gusty winds (51 mph) am 13th. Mild
13
14
1019.7
15.1
85
2
SW
14.0
19.1
13.9
0.0
12.3
2.10
654
1.14
23
Sunny intervals 13th, overcast am 14th
14
15
1019.1
14.7
91
0
Calm
14.0
20.1
12.7
0.1
9.8
1.39
529
0.99
12
A few sunny intervals 14th, overcast am 15th
15
16
1029.0
11.2
88
3
ENE
14.5
15.9
10.6
0.0
10.2
0.00
190
0.64
19
Mainly overcast 15th, drizzle am 16th with much colder NE'y winds setting in
16
17
1031.7
11.8
80
2
NW
14.5
18.0
7.9
0.0
4.2
12.13
522
1.78
10
Overcast 16th, clear skies am 17th
17
18
1029.1
14.1
80
0
NE
13.5
17.9
8.7
0.0
4.2
9.48
531
1.78
13
Unbroken sunshine 17th, haze. Clear skies am 18th
18
19
1027.3
11.4
85
1
E
13.0
14.8
6.5
0.1
1.9
11.11
721
1.42
17
Sunny periods 18th. Clear skies am 19th
19
20
1025.4
11.4
95
0
ENE
13.0
15.6
10.3
0.0.00
7.3
3.92
686
1.09
10
Prolonged sunshine 19th. Haar am 20th, a damp morning
20
21
1015.6
12.7
84
5
WSW
13.0
16.7
9.2
0.0
5.0
6.22
657
1.78
20
Sunny intervals 20th, becoming overcast am 21st
21
22
1002.5
14.2
85
10
SW
13.0
15.6
10.9
0.3
8.6
2.98
450
1.22
35
Sunny periods 21st, overcast am 22nd
22
23
1001.5
8.5
83
2
WNW
12.5
11.4
6.1
1.0
2.3
3.39
657
1.14
16
Mainly overcast 22nd, showers late pm. Clear and cold am 23rd
23
24
993.9
7.9
88
2
N
12.0
10.7
4.0
1.6
- 0.5
3.23
587
0.94
16
Mainly overcast 23rd, showers late pm. Clear with ground frost am 24th
24
25
1008.1
8.3
83
2
WNW
11.0
11.7
4.6
0.0
0.3
1.30
429
0.97
22
Light showers early pm 24th and am 25th
25
26
1016.5
7.9
75
4
WNW
10.5
13.1
4.8
0.0
1.8
6.54
729
1.35
18
Mainly cloudy 25th. Clear skies am 26th, more cloud later
26
27
1017.6
6.0
78
2
NW
10.0
12.1
1.4
0.0
-3.9
11.02
606
1.24
10
Sunny periods 27th. Cold overnight with ground frost-earliest since recording began in 2014
27
28
1010.0
9.9
85
0
NNW
10.5
15.1
5.3
0.1
0.9
1.04
545
1.07
28
Unbroken sunshine 27th. Clear skies, then clouding over, am 28th
28
29
1015.6
10.4
84
3
WSW
10.5
14.6
7.6
0.2
4.2
8.31
534
1.27
26
Mainly overcast 28th. Clear skies am 29th
29
30
998.3
10.8
87
9
S
11.0
7.5
5.1

Sunny periods 29th, overcast with light rain later am 30th

30
31
 
31
 
Total/
Mean
15.9
9.1
25.1
-3.9
140.42
879
44.55
53
 
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
Temp
(°C)
2Mean Minimum
Temp
(°C)
3Total Rainfall
(mm)


4Grass Min
Temp
lowest
(°C)
5Total Sun
(Hours)
Solar
Rad'n highest
W/m2
7Total ET
(mm)
6Max
Wind Speed
(mph)

Month so far (to 0900 GMT on the 30th September)

Overall mean temperature 12.5 ( - 0.1 degC of normal)

Precipitation 25.1 mm (33.5%), Sunshine 148.73 hours (114.4%)

 
  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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