Royston (Iceni) Weather Station
2011 Annual Summary
Part 1 Temperature, Rainfall & Sunshine
|
T e m p e r a t u r e (°C) |
|
Rainfall (mm) |
Sunshine (Hrs) |
|||||||||||||||||||||||||
|
Month |
Mean Maximum |
Highest Maximum |
Date(s) |
Lowest Maximum |
Date(s) |
Mean Minimum |
Highest Minimum |
Date(s) |
Lowest Minimum |
Date(s) |
Mean Grass Minimum |
Lowest Grass Minimum |
Date(s) |
Mean Dry Bulb (5 min. obs.) |
Mean Earth 30cms 09 GMT |
Mean Earth 30cms 21 GMT |
No. of Air Frosts |
No. of Ground Frosts |
Air Frost Duration (Hours) |
Total |
No. of Days with 0.2mm or more |
Most in a Day |
Date(s) |
Total |
Highest |
Date(s) |
No. of Days no sun |
Month |
|
JAN |
6.4 |
12.8 |
13 |
1.5 |
21 |
2.6 |
11.1 |
14 |
-4.1 |
29 |
0.9 |
-7.2 |
29 |
4.2 |
4.8 |
5.0 |
10 |
16 |
57.3 |
73.5 |
20 |
16.2 |
17 |
42.7 |
7.5 |
31 |
12 |
JAN |
|
FEB |
9.2 |
14.5 |
25 |
3.7 |
28 |
4.5 |
11.0 |
5 |
-2.9 |
1 |
3.0 |
-5.1 |
1 |
6.7 |
5.9 |
6.2 |
1 |
5 |
6.8 |
31.5 |
14 |
5.1 |
10 |
55.6 |
8.6 |
8 |
12 |
FEB |
|
MAR |
11.6 |
17.8 |
23 |
3.5 |
1 |
3.5 |
9.4 |
22 |
-2.5 |
8 |
1.3 |
-7.5 |
8 |
6.9 |
7.1 |
7.6 |
5 |
11 |
21.8 |
4.4 |
5 |
2.8 |
30 |
134.4 |
11.4 |
24 |
4 |
MAR |
|
APR |
19.2 |
27.1 |
23 |
11.8 |
13 |
7.3 |
11.8 |
6 |
2.5 |
10 |
4.1 |
-2.0 |
28 |
12.4 |
12.0 |
12.8 |
0 |
3 |
0.0 |
4.8 |
3 |
2.5 |
3 |
228.7 |
13.5 |
30 |
0 |
APR |
|
MAY |
19.0 |
24.0 |
6 |
15.0 |
15 |
8.5 |
14.6 |
8 |
0.5 |
3, 4 |
6.3 |
-3.9 |
4 |
13.3 |
14.7 |
15.5 |
0 |
2 |
0.0 |
19.2 |
8 |
5.9 |
26, 30 |
230.7 |
14.6 |
24 |
0 |
MAY |
|
JUN |
20.7 |
31.5 |
27 |
14.6 |
6 |
10.6 |
17.8 |
27 |
7.4 |
10 |
8.9 |
3.7 |
1 |
15.1 |
16.6 |
17.5 |
0 |
0 |
0.0 |
61.3 |
15 |
9.5 |
28 |
210.3 |
14.4 |
14 |
0 |
JUN |
|
JUL |
21.4 |
25.8 |
31 |
17.0 |
13 |
11.5 |
14.4 |
16 |
7.7 |
22 |
9.7 |
4.6 |
30 |
15.9 |
17.8 |
18.7 |
0 |
0 |
0.0 |
36.2 |
12 |
11.9 |
16 |
173.6 |
12.0 |
24 |
0 |
JUL |
|
AUG |
21.2 |
29.8 |
3 |
14.1 |
18 |
12.4 |
16.0 |
2, 3 |
8.7 |
19 |
10.4 |
6.0 |
19 |
16.2 |
17.6 |
18.3 |
0 |
0 |
0.0 |
50.7 |
16 |
10.6 |
18 |
133.6 |
11.5 |
19 |
1 |
AUG |
|
SEP |
21.4 |
28.7 |
30 |
17.9 |
7 |
12.3 |
16.5 |
10 |
8.0 |
18 |
10.3 |
4.4 |
15 |
15.9 |
15.8 |
16.4 |
0 |
0 |
0.0 |
15.4 |
10 |
5.4 |
4 |
196.6 |
12.5 |
1 |
0 |
SEP |
|
OCT |
17.5 |
29.0 |
1 |
12.0 |
27 |
10.1 |
17.5 |
2 |
1.9 |
20 |
13.0 |
-1.2 |
20 |
13.1 |
13.0 |
13.3 |
0 |
1 |
0.0 |
21.8 |
11 |
6.3 |
8 |
175.4 |
10.6 |
1 |
1 |
OCT |
|
NOV |
12.7 |
17.0 |
3 |
9.4 |
23 |
7.9 |
13.1 |
3 |
1.6 |
28 |
6.3 |
-0.9 |
28 |
9.8 |
10.3 |
10.4 |
0 |
2 |
0.0 |
30.7 |
10 |
22.3 |
3 |
85.8 |
7.5 |
19 |
6 |
NOV |
|
DEC |
8.7 |
13.7 |
26 |
2.9 |
16 |
4.0 |
10.9 |
26 |
-1.7 |
18 |
2.3 |
-4.2 |
19 |
6.0 |
6.0 |
6.2 |
3 |
9 |
16.6 |
60.4 |
21 |
10.0 |
12 |
74.7 |
6.6 |
22 |
3 |
DEC |
|
YEAR |
15.8 |
X |
X |
X |
X |
7.9 |
X |
X |
X |
X |
6.4 |
X |
X |
11.3 |
11.8 |
12.3 |
19 |
49 |
102.5 |
409.9 |
145 |
X |
X |
1742.1 |
X |
X |
39 |
YEAR |
Part 2 Air Pressure, Wind Direction, Wind Speed, Humidity, Cloud Cover, Fog, Snow Falling, Snow Lying, Hail & Thunder
|
P r e s s u r e (mb) |
Wind Direction 0900 GMT (No. of Days) |
Wind Speed (MPH) |
Humidity |
Cloud |
No of Days With: |
|||||||||||||||||||||
|
Month |
Mean MSL Pressure |
Highest |
Date(s) |
Lowest |
Date(s) |
N |
NE |
E |
SE |
S |
SW |
W |
NW |
CALM |
Mean Wind Speed |
Maximum Gust |
Date |
Mean Relative Humidity (5 min.obs.) |
Mean Cloud Cover 09 GMT (oktas) |
Fog (visibility < 1000m @ 09 GMT) |
Fog (visibility < 200m @ 09 GMT) |
Snow or Rain and Snow |
Snow Lying (> 50% cover @ 09(GMT) |
Hail |
Thunder |
Month |
|
JAN |
1017.5 |
1039.7 |
21 |
985.4 |
8 |
4 |
3 |
2 |
0 |
5 |
7 |
7 |
3 |
0 |
6.5 |
35 |
5, 15 |
89.1 |
6.9 |
1 |
0 |
0 |
0 |
0 |
0 |
JAN |
|
FEB |
1013.0 |
1034.3 |
1 |
987.7 |
15 |
1 |
1 |
2 |
2 |
11 |
6 |
4 |
1 |
0 |
8.1 |
51 |
4 |
89.0 |
6.8 |
2 |
0 |
0 |
0 |
0 |
0 |
FEB |
|
MAR |
1021.7 |
1041.2 |
23 |
995.7 |
13 |
3 |
6 |
4 |
1 |
5 |
7 |
2 |
3 |
0 |
5.1 |
44 |
31 |
80.9 |
5.5 |
1 |
1 |
0 |
0 |
0 |
0 |
MAR |
|
APR |
1019.2 |
1029.6 |
12 |
1006.2 |
2 |
6 |
6 |
3 |
0 |
4 |
5 |
3 |
3 |
0 |
5.2 |
40 |
5 |
72.4 |
4.0 |
0 |
0 |
0 |
0 |
0 |
0 |
APR |
|
MAY |
1017.1 |
1027.8 |
24 |
1003.4 |
26 |
0 |
2 |
1 |
2 |
6 |
9 |
7 |
4 |
0 |
7.4 |
40 |
23 |
69.0 |
4.4 |
0 |
0 |
0 |
0 |
0 |
2 |
MAY |
|
JUN |
1014.6 |
1034.5 |
3 |
995.6 |
17 18 |
1 |
5 |
0 |
1 |
3 |
9 |
8 |
3 |
0 |
6.7 |
32 |
21 |
76.4 |
4.9 |
0 |
0 |
0 |
0 |
0 |
2 |
JUN |
|
JUL |
1012.7 |
1026.5 |
1 |
990.9 |
17 |
8 |
1 |
1 |
1 |
4 |
5 |
3 |
8 |
0 |
5.2 |
34 |
8 |
74.7 |
5.3 |
0 |
0 |
0 |
0 |
0 |
1 |
JUL |
|
AUG |
1012.3 |
1025.7 |
10 |
999.7 |
6 |
1 |
4 |
0 |
1 |
3 |
9 |
10 |
3 |
0 |
5.6 |
33 |
27 |
77.0 |
6.0 |
0 |
0 |
0 |
0 |
0 |
1 |
AUG |
|
SEP |
1012.6 |
1028.9 |
27 |
998.0 |
12 |
0 |
0 |
1 |
3 |
5 |
15 |
5 |
1 |
0 |
7.8 |
47 |
12 |
78.1 |
4.1 |
0 |
0 |
0 |
0 |
0 |
0 |
SEP |
|
OCT |
1016.1 |
1032.0 |
14 |
992.5 |
25 |
0 |
0 |
2 |
5 |
6 |
9 |
7 |
2 |
0 |
7.7 |
39 |
10 |
80.2 |
4.2 |
0 |
0 |
0 |
0 |
0 |
0 |
OCT |
|
NOV |
1016.5 |
1029.7 |
12 |
989.4 |
4 |
1 |
2 |
5 |
6 |
10 |
3 |
3 |
0 |
0 |
5.9 |
40 |
27, 29 |
90.2 |
6.0 |
5 |
0 |
0 |
0 |
0 |
0 |
NOV |
|
DEC |
1010.2 |
1033.8 |
27 |
980.6 |
16 |
0 |
0 |
0 |
0 |
2 |
19 |
9 |
1 |
0 |
10.6 |
49 |
13 |
85.6 |
4.9 |
2 |
0 |
2 |
1 |
0 |
0 |
DEC |
|
YEAR |
1015.3 |
X |
X |
X |
X |
25 |
30 |
21 |
22 |
64 |
103 |
68 |
32 |
0 |
6.8 |
X |
X |
80.2 |
5.3 |
11 |
1 |
2 |
1 |
0 |
6 |
YEAR |
Click on the links below to access the graphs and charts representing the data in the above tables.........
1. Monthly Mean Maximum & Minimum Temperatures 2. Monthly Temperature Extremes
3. Monthly Mean Earth (30 cms Depth) Temperature 4. Monthly Frequency of Air & Ground Frost, and Air Frost Duration
5. Monthly Rainfall 6. Monthly Rainfall Duration 7. Monthly Sunshine Duration
8. Monthly Rainfall & Mean MSL Air Pressure 9. Monthly Mean, Highest and Lowest MSL Air Pressure
10. Monthly Wind Direction Frequency @ 0900 GMT
11. Monthly Maximum Gust & Mean Wind Speed 12. Monthly Mean Relative Humidity
Return to Welcome to Royston (Iceni) Weather Station header page
(This page last updated 19th February 2012 2116 GMT)