Page updated January 8, 2020 18:15
Link to November 2019..Link to January 2020

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Swanston Weather Station
December 2019 (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
1027.6
– 0.7
94
6
WNW
2.5
5.4
– 2.1
1.1
– 5.8
6.01
195
0.33
17
 Prolonged sunshine 30th November. Clear am 1st with frost. 9.0 h
1
2
1028.7
5.4
94
9
W
2.5
7.2
– 0.7
4.8
– 1.1
0.00
83
0.41
35
 Prolonged, hazy, sunshine 1st. Frost 1.2 h. Milder 2nd with cloud and light rain
2
3
1022.4
5.6
90
9
W
4.0
8.0
5.4
0.0
4.5
2.47
237
0.81
37
 Rain 2nd. Dry am 3rd. Milder
3
4
1011.1
8.0
80
22
SW
4.0
8.3
4.2
0.7
0.8
0.27
113
0.84
42
 Sunny intervals 3rd. Increasing winds and milder late pm 3rd and am 4th
4
5
1006.9
6.7
85
17
SW
4.0
11.8
5.8
3.6
4.0
0.00
95
1.02
53
 Cloudy 4th with rain early pm. Cloudy and windy (47 mph) am 5th
5
6
991.0
10.1
94
12
W
5.5
10.1
5.8
0.2
5.5
0.04
188
0.69
33
 Wet and windy 5th, gust 53 mph at 1800 GMT. Light rain am 6th
6
7
1004.6
7.3
94
10
WSW
5.5
10.7
6.8
12.1
5.5
0.00
114
0.58
56
 Cloudy 6th and am 7th
7
8
983.3
4.8
91
21
WSW
5.5
5.8
3.9
5.8
2.2
0.42
209
0.76
48
 Rain pm 7th, gusts to 56 mph late pm. Squally showers am 8th, cooler
8
9
1008.7
3.2
84
8
WNW
5.0
8.6
3.1
0.9
0.9
5.37
202
0.74
38
 Squally showers 8th. Clearer and calmer am 9th
9
10
994.3
8.2
89
31
SSW
5.0
12.0
3.1
7.8
0.5
0.00
65
1.02
73
 Sunny periods 9th. Very windy am 10th. Max 63 mph up to 0900 GMT
10
11
992.8
3.8
84
17
SW
4.5
4.8
2.9
0.4
0.9
4.52
149
0.89
41
 Gust 73 mph at 1020 GMT on 10th. Showers. Clear am 11th
11
12
985.7
3.1
87
11
SSW
4.0
PM 1200'
5.4
2.6
2.7
0.4
1.40
227
0.41
34
Sunny intervals 11th, rasn showers late. Clear am 12th
12
13
971.0
3.5
95
14
W
4.0
P 1200'
5.8
2.1
1.2
3.0
1.85
232
0.48
26
 Light ra/sn late pm 12th and am 13th
13
14
975.0
2.6
93
12
W
3.5
P 1500'
4.2
2.3
2.3
1.0
0.38
142
0.58
48
 Sunny intervals 13th. Light ra/sn sh am 14th
14
15
982.2
2.6
89
14
WSW
3.0
P 1300'
3.8
2.2
2.7
– 0.1
3.06
181
0.69
36
 Ra/sn sh 14th, gusty winds. Clear am 15th, ground frost
15
16
990.1
2.7
92
13
W
3.0
P 1300'
5.1
1.7
0.0
0.2
1.88
183
0.48
36
 Sunny intervals 15th. Ra/sn am 16th
16
17
993.5
4.7
88
12
SW
3.0
P 1400'
5.3
2.7
0.0
1.4
1.18
167
0.66
32
 A few sunny intervals 16th. Variable cloud amounts am 17th
17
18
1005.4
0.4
91
4
ENE
3.0
P 1500'
9.6
0.4
0.9
– 2.6
3.00
134
0.51
34
 A few sunny intervals 17th. Clear skies late 17th and am 18th, ground frost
18
19
992.7
8.0
90
3
SE
3.5
8.9
0.4
3.6
2.0
0.24
171
0.36
52
 Sunny intervals 18th, rain later pm. Milder overnight 18th/19th.
19
20
976.9
7.1
91
4
SW
4.0
7.4
7.0
0.0
5.2
0.00
95
0.23
31
 Gust 52 mph am 20th. Overcast 20th.
20
21
976.0
2.8
92
0
Calm
3.5
5.3
2.8
0.0
– 0.1
1.84
134
0.33
28
 Clear sky am 21st, ground frost
21
22
980.0
4.9
92
1
WNW
4.0
8.0
2.8
0.0
1.4
2.29
214
-
17
 A few sunny intervals 21st. Mainly cloudy am 22nd
22
23
992.1
6.7
93
17
WSW
4.0
7.5
3.9
0.2
1.4
0.51
141
-
41
 Sunny intervals 22nd. Cloudy am 23rd
23
24
999.9
4.5
87
2
WNW
4.5
5.7
3.4
0.2
1.1
0.00
114
-
27
 Shower am 23rd,mainly cloudy. Cloudy and calmer am 24th
24
25
1019.7
5.4
90
5
W
4.0
6.7
3.6
0.0
0.9
4.68
135
-
21
 Cloudy 24th. Clear skies am 25th
25
26
1015.2
4.6
83
13
SE
4.0
6.2
2.4
1.2
– 0.8
0.00
69
-
28
 Prolonged sunshine 25th. Clear skies becoming cloudy am 26th, ground frost
26
27
1022.5
6.2
95
11
S
4.5
10.7
3.5
0.8
1.4
0.00
62
-
43
 Cloudy 26th. Rain am 27th
27
28
1024.4
9.2
85
27
SSW
5.0
9.5
5.8
0.0
7.4
0.95
102
-
53
 Rain am 27th. Gusty winds (53mph) overnight 27th/28th. Milder
28
29
1020.5
10.0
74
26
SW
5.5
10.3
8.8
0.0
7.3
4.18
149
-
53
Mainly cloudy 28th. Clear am 29th. Gusty winds throughout (53mph max)
29
30
1017.7
9.9
95
18
SW
5.5
9.7
8.9
0.1
8.3
0.00
69
-
40
Sunny periods 29th. Cloudy and windy am 30th
30
31
1033.7
1.3
94
3
W
4.0
6.3
1.4
0.0
– 4.4
5.45
147
-
11
Cloud clearing late afternoon 30th. Clear am 31st with ground frost
31
 
Total/
Mean
7.6
3.4
53.3
– 5.8
51.84
237
12.8
73
  
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)
 
  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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