Page updated January 25, 2021 13:11
Link to December 2020..Link to February 2021

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Swanston Weather Station
January 2021 (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
1014.7
1.4
89
1
WNW
2.5
4 cm snow
3.7
0.1
0.6
–1.1
4.55
148
0.15
10
Snow turning to rain 31st December. Clear skies am 1st January
1
2
1018.4
– 0.8
93
0
WSW
2.0
5 cm snow
1.6
– 1.2
0.6
– 3.5
4.65
297
0.15
8
Sunny periods 1st . Snow shower 0800-0900 2nd. 11.3h <0degC
2
3
1024.9
0.8
88
1
W
2.0
4 cm snow
3.3
– 0.8
6.2
– 3.2
0.46
216
0.13
11
Sunny periods 2nd. Clear overnight, light snow showers mid am 3rd. 4.9h<0degC
3
4
1031.6
2.4
92
1
NNW
2.0
2 cm snow
2.9
0.7
6.8
– 1.6
0.01
72
0.10
19
Showers of Sn, RaSn, Hail and Freezing Rain. Glaze and very icy am 4th
4
5
1030.3
1.9
95
2
N
2.0
< 50% cover
2.9
0.9
0.0
– 0.5
0.08
137
0.10
18
RaSn showers 4th and am 5th
5
6
1025.9
0.0
93
0
Calm
2.0
PML 800'
2.3
– 0.2
0.8
– 3.5
5.13
151
0.15
14
Mainly overcast 5th, clear skies evening. Light snow shower am 6th. 3.2h <0degC
6
7
1016.9
0.7
94
1
W
2.0
PML 800'
1.9
– 0.7
5.2
– 3.5
0.21
77
0.08
21
Prolonged sunshine 6th, occ light rain and snow evening 6th/am 7th. 3.9h <0degC
7
8
1023.0
– 3.1
88
0
W
2.0
4 cm snow
0.3
– 3.3
0.0
– 5.5
5.24
369
0.40
7
Moderate snowfall late 7th and early 8th. 4 cm @ 0900h. 8.0 hrs <0degC to 0900h
8
9
1023.7
0.3
80
6
SW
2.0
3 cm snow
4.6
-3.3
0.2
– 8.5
2.69
158
0.61
42
Prolonged sunshine 8th. Clear skies overnight 8th/9th. 23.5h <0degC
9
10
1020.7
4.3
88
2
WSW
2.0
PML 1000'
6.7
0.3
0.0
2.5
0.14
183
0.21
41
Sunny intervals 9th, thaw, gusty winds pm. Mainly overcast am 10th
10
11
1004.0
6.7
91
13
SW
3.0
P 1350'
9.2
4.3
6.7
4.3
0.00
83
0.48
42
Overcast 10th and am 11th, milder. Gusty winds
11
12
1013.9
– 0.1
83
2
WSW
2.5
1 cm snow
2.5
– 0.7
0.0
– 2.9
5.96
209
0.25
14
Turning much colder from 1820h 11th. Rain turning to snow. Clear am 12th. 8.3h<0degC
12
13
1017.0
– 0.4
92
0
Calm
2.0
1 cm snow
2.2
– 1.1
20.9
– 3.8
0.03
91
0.10
15
Prolonged sunshine 12th. Clear skies overnight 12th/13th, turning cloudy. 3.7h<0degC
13
14
1018.0
0.3
96
0
NE
2.0
3 cm snow
2.2
-0.4
0.5
-0.1
0.00
79
0.08
17
Continous wet snow from 1500 GMT 13th to 0900 GMT 14th. 0.3Ch<0degC
14
15
1028.7
1.5
91
2
SSW
2.0
3 cm snow
5.8
– 0.9
9.1
– 3.8
0.07
93
0.18
17
Overcast 14th, clear skies later. Light snow shower am 15th. 3.9h<0degC
15
16
1006.0
5.1
91
8
SSW
2.0
< 50% cover
7.6
– 0.5
0.0
– 1.9
0.69
146
0.56
48
Overcast 15th. Rain and snow turning to rain am 16th. Less cold, thaw. Gusts to 48 mph.
16
17
1018.5
3.4
85
4
WSW
2.0
PML 1100'
5.8
2.8
1.7
1.3
1.11
232
0.48
23
Mainly overcast 16th, windy am. Remaining overcast am 17th
17
18
1012.3
4.1
88
7
SW
2.5
PML 1400'
6.1
3.3
1.0
2.5
2.21
258
0.48
23
A few sunny intervals 17th. Showers am 18th
18
19
997.3
2.9
90
1
SW
3.0
Patches 1500'
4.7
2.7
19.6
1.0
0.00
65
0.10
9
Sunny intervals 18th, a few clear spells am 19th
19
20
981.1
0.2
97
0
Calm
.
9 cm snow
1.0
– 0.1
17.1
– 0.2
0.00
44
0.03
4
Snow overnight 19th/20th. 9 cm @ 0900h on 20th. 1.2h<0degC
20
21
968.9
0.5
94
6
W
.
20 cm snow
2.6
– 0.6
0.0
– 0.2
0.71
188
0.38
39
Heavy snow overnight 20th/21st. 20 cm at 0900h 0n 21st. 11.0h<0degC Grass min buried
21
22
984.6
1.2
87
5
SW
.
16 cm snow
2.7
0.5
0.0
– 1.0
5.60
229
0.43
22
A few sunny intervals 21st. A few clear spells am 22nd
22
23
991.9
– 1.3
91
2
WSW
.
15 cm snow
0.7
– 1.6
0.0
– 4.0
6.57
236
0.25
21
Prolonged sunshine 22nd. Clear skies am 23rd. 12.3h<0degC to 0900h
23
24
996.4
– 0.6
89
2
WSW
.
14 cm snow
2.4
– 1.7
0.0
– 4.1
6.93
246
0.33
25
Prolonged sunshine 23rd. Clear skies am 24th. 20.0h<0degC to 0900h
24
25
1003.3
1.4
87
5
W
.
13 cm snow
– 0.6
– 2.1
Prolonged sunshine 24th. Variable cloud amount am 25th. 8.0h<0degC to 0900h
25
26
 
26
27
 
27
28
 
28
29
 
29
30
 
30
31
 
31
 
Total/
Mean
3.6
– 0.1
97.1
– 8.5
53.04
369
6.2
48
 
Date
 
Pressure
(mb)
Temp
(°C)
Relative
Humidity
(%)
Wind Speed (mph)
Wind
Direction
Soil Temp
at 20cm
(°C)
SnowDepth(cm) or
Pentlands, Lammermuirs, Moorfoots snowline(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)

January 2021 so far (to 0900 GMT on the 25th January)

Overall mean temperature 1.7C ( – 2.0 degC of normal)

Precipitation 97.1 mm (118.6%), Sunshine 53.04 hours (106.1%)

 
  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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