Royston (Iceni) Weather Station
2006 Annual Summary
Part 1 Temperature, Rainfall & Sunshine
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T e m p e r a t u r e (°C) |
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Rainfall (mm) |
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Sunshine (Hours) |
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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) |
Rainfall Duration (Hours) |
Total |
Highest |
Date(s) |
No. of Days no sun |
Month |
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JAN |
6.2 |
11.0 |
19 |
0.7 |
24 |
2.1 |
8.2 |
19 |
-4.3 |
24, 25 |
0.2 |
-7.8 |
25 |
3.8 |
4.7 |
4.8 |
9 |
10 |
91.8 |
16.8 |
13 |
3.8 |
3 |
35.1 |
61.9 |
7.6 |
28 |
10 |
JAN |
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FEB |
6.5 |
11.4 |
15 |
-1.5 |
2 |
1.6 |
7.9 |
13 |
-3.0 |
3 |
-0.1 |
-5.8 |
10 |
3.5 |
4.3 |
4.5 |
11 |
15 |
76.5 |
31.9 |
11 |
6.6 |
14 |
35.4 |
75.2 |
9.2 |
25 |
11 |
FEB |
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MAR |
8.9 |
16.5 |
30 |
3.1 |
16 |
1.9 |
11.2 |
27 |
-4.3 |
3 |
-0.1 |
-8.5 |
3 |
4.7 |
5.1 |
5.5 |
13 |
18 |
112.8 |
33.2 |
12 |
6.5 |
7 |
30.3 |
112.4 |
10.2 |
23 |
5 |
MAR |
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APR |
13.8 |
17.5 |
27 |
8.7 |
11 |
5.2 |
9.5 |
27 |
-3.0 |
5 |
3.0 |
-6.9 |
5 |
8.8 |
10.1 |
10.7 |
2 |
5 |
14.2 |
32.8 |
14 |
12.9 |
30 |
43.6 |
141.1 |
12.6 |
5 |
1 |
APR |
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MAY |
17.6 |
26.0 |
4 |
13.2 |
29 |
9.0 |
13.0 |
27 |
3.2 |
30 |
7.3 |
1.7 |
30 |
12.7 |
14.5 |
15.0 |
0 |
0 |
0.0 |
70.2 |
19 |
9.2 |
6 |
67.1 |
158.3 |
14.0 |
11 |
0 |
MAY |
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JUN |
22.8 |
29.8 |
12 |
15.4 |
26 |
12.1 |
18.5 |
12 |
5.1 |
1 |
10.4 |
2.4 |
1 |
17.2 |
18.3 |
19.2 |
0 |
0 |
0.0 |
24.3 |
8 |
18.6 |
13 |
15.4 |
258.5 |
16.0 |
9 |
0 |
JUN |
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JUL |
27.8 |
35.2 |
19 |
21.0 |
7 |
15.1 |
20.7 |
20 |
8.4 |
15 |
13.0 |
5.5 |
15 |
21.1 |
20.8 |
21.8 |
0 |
0 |
0.0 |
93.4 |
10 |
75.5 |
26 |
13.5 |
297.2 |
16.1 |
3 |
0 |
JUL |
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AUG |
21.0 |
27.3 |
6 |
15.9 |
12 |
12.8 |
17.3 |
7 |
9.1 |
25 |
11.2 |
6.5 |
25 |
16.3 |
18.5 |
19.0 |
0 |
0 |
0.0 |
91.4 |
17 |
15.6 |
18 |
48.0 |
147.4 |
11.8 |
5 |
1 |
AUG |
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SEP |
22.3 |
28.6 |
11 |
17.2 |
22 |
13.8 |
18.3 |
5 |
7.2 |
8 |
11.8 |
4.6 |
8 |
17.6 |
17.9 |
18.4 |
0 |
0 |
0.0 |
44.6 |
14 |
10.9 |
13 |
31.7 |
191.7 |
12.2 |
8 |
1 |
SEP |
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OCT |
17.2 |
20.5 |
9 |
14.0 |
23 27 |
10.9 |
14.9 |
10 |
7.0 |
14 |
8.9 |
4.5 |
14 |
13.4 |
14.4 |
14.6 |
0 |
0 |
0.0 |
62.9 |
16 |
10.3 |
23 |
31.3 |
131.7 |
10.0 |
7 |
2 |
OCT |
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NOV |
11.9 |
15.3 |
15 |
8.4 |
21 |
6.0 |
12.0 |
25 |
-0.1 |
2 |
3.6 |
-3.5 |
2 |
8.2 |
9.1 |
9.1 |
1 |
5 |
0.2 |
65.9 |
15 |
15.3 |
17 |
41.6 |
118.7 |
8.6 |
2 |
1 |
NOV |
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DEC |
9.0 |
14.3 |
4 |
1.2 |
22 |
4.9 |
13.0 |
5 |
-4.0 |
19 |
3.4 |
-7.1 |
19 |
6.5 |
7.2 |
7.4 |
5 |
8 |
63.6 |
70.7 |
18 |
17.9 |
30 |
31.0 |
67.4 |
6.5 |
17 |
12 |
DEC |
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YEAR |
15.4 |
X |
X |
X |
X |
8.0 |
X |
X |
X |
X |
6.1 |
X |
X |
11.2 |
12.1 |
12.5 |
41 |
61 |
359.1 |
638.1 |
167 |
X |
X |
424.0 |
1761.5 |
X |
X |
44 |
YEAR |
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Part 2 Air Pressure, Wind Direction, Wind Speed, Humidity, Cloud Cover, Fog, Snow Falling, Snow Lying, Hail & Thunder
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P r e s s u r e (mb) |
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Wind Direction 0900 GMT (No. of Days) |
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Wind Speed (MPH) |
Humidity |
Cloud |
No of Days With: |
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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 |
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JAN |
1023 |
1039 |
22 |
991 |
1 |
2 |
5 |
2 |
4 |
6 |
2 |
3 |
2 |
5 |
1.8 |
46 |
11 |
92.3 |
6.5 |
0 |
0 |
3 |
0 |
0 |
0 |
JAN |
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FEB |
1015 |
1034 |
5 |
978 |
17 |
1 |
6 |
1 |
0 |
3 |
4 |
5 |
5 |
3 |
2.9 |
48 |
15 |
87.0 |
5.8 |
0 |
0 |
5 |
1 |
0 |
0 |
FEB |
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MAR |
1009 |
1031 |
12 |
989 |
24 |
0 |
9 |
0 |
4 |
3 |
8 |
4 |
2 |
1 |
3.7 |
46 |
28 |
81.4 |
5.6 |
1 |
1 |
6 |
1 |
2 |
0 |
MAR |
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APR |
1013 |
1026 |
28 |
1001 |
1 |
5 |
2 |
2 |
1 |
2 |
7 |
8 |
3 |
0 |
3.0 |
46 |
2 |
78.2 |
5.4 |
0 |
0 |
0 |
0 |
1 |
0 |
APR |
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MAY |
1011 |
1027 |
31 |
984 |
22 |
2 |
2 |
0 |
3 |
4 |
9 |
6 |
4 |
1 |
2.7 |
44 |
19 |
81.5 |
6.0 |
1 |
0 |
0 |
0 |
1 |
2 |
MAY |
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JUN |
1019 |
1030 |
2 |
1006 |
21 |
2 |
6 |
0 |
7 |
2 |
4 |
6 |
3 |
0 |
1.4 |
35 |
21 |
70.5 |
3.4 |
0 |
0 |
0 |
0 |
0 |
1 |
JUN |
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JUL |
1017 |
1032 |
14 |
1003 |
31 |
4 |
7 |
3 |
2 |
2 |
8 |
3 |
2 |
0 |
1.9 |
37 |
9 |
67.2 |
3.2 |
0 |
0 |
0 |
0 |
1 |
4 |
JUL |
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AUG |
1010 |
1023 |
8 |
998 |
17 |
5 |
1 |
0 |
0 |
3 |
3 |
11 |
8 |
0 |
2.5 |
37 |
1 |
79.8 |
5.2 |
0 |
0 |
0 |
0 |
1 |
5 |
AUG |
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SEP |
1010 |
1031 |
8 |
998 |
21 |
3 |
1 |
0 |
6 |
6 |
8 |
4 |
0 |
2 |
2.5 |
46 |
3 |
83.6 |
4.4 |
1 |
0 |
0 |
0 |
0 |
1 |
SEP |
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OCT |
1007 |
1031 |
13 |
981 |
24 |
0 |
1 |
1 |
5 |
7 |
8 |
5 |
2 |
2 |
3.1 |
44 |
26 |
90.2 |
4.9 |
3 |
1 |
0 |
0 |
1 |
2 |
OCT |
|
NOV |
1011 |
1035 |
10 |
976 |
23 |
0 |
0 |
0 |
1 |
10 |
9 |
9 |
1 |
0 |
3.7 |
44 |
20 |
89.8 |
4.0 |
0 |
0 |
0 |
0 |
0 |
1 |
NOV |
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DEC |
1016 |
1044 |
22 |
981 |
8 |
1 |
1 |
1 |
0 |
9 |
12 |
3 |
0 |
4 |
5.3 |
65 |
30 |
91.7 |
5.7 |
3 |
2 |
0 |
0 |
0 |
0 |
DEC |
|
YEAR |
1013.4 |
X |
X |
X |
X |
25 |
41 |
10 |
33 |
57 |
82 |
67 |
32 |
18 |
2.9 |
X |
X |
82.8 |
5.0 |
9 |
4 |
14 |
2 |
7 |
16 |
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
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(This page last updated 13th January 2007 2104 GMT)