Royston (Iceni) Weather Station
2007 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 |
|
JAN |
9.8 |
13.8 |
18 |
2.5 |
23 |
4.9 |
11.7 |
9 |
-3.1 |
25 |
2.7 |
-7.7 |
25 |
6.9 |
6.8 |
7.0 |
4 |
6 |
44.0 |
62.9 |
21 |
12.0 |
9 |
52.4 |
78.2 |
7.8 |
31 |
5 |
JAN |
|
FEB |
9.1 |
12.4 |
23 |
1.4 |
8 |
3.8 |
7.7 |
28 |
-4.9 |
7 |
1.4 |
-10.4 |
7 |
5.8 |
5.7 |
6.0 |
7 |
10 |
64.5 |
61.8 |
17 |
10.9 |
10 |
83.6 |
80.4 |
8.0 |
3 |
7 |
FEB |
|
MAR |
12.2 |
17.5 |
12 |
5.9 |
22 |
3.9 |
8.8 |
6 |
-1.5 |
21 |
1.0 |
-5.6 |
22 |
7.1 |
7.9 |
8.2 |
2 |
13 |
9.7 |
36.2 |
15 |
10.7 |
2 |
42.4 |
177.1 |
10.2 |
13 |
3 |
MAR |
|
APR |
18.1 |
23.0 |
15 |
8.8 |
3 |
6.4 |
13.3 |
25 |
0.2 |
4 |
3.5 |
-3.3 |
4 |
11.5 |
11.9 |
12.5 |
0 |
4 |
0.0 |
1.6 |
3 |
0.6 |
23, 25 |
3.8 |
232.1 |
13.9 |
30 |
0 |
APR |
|
MAY |
17.1 |
24.3 |
24 |
8.5 |
28 |
8.6 |
15.6 |
24 |
4.0 |
2 |
6.7 |
0.8 |
1 |
12.3 |
14.5 |
14.9 |
0 |
0 |
0.0 |
147.5 |
17 |
65.7 |
27 |
122.6 |
143.8 |
14.0 |
2 |
3 |
MAY |
|
JUN |
20.3 |
25.0 |
9 |
14.2 |
6 |
11.8 |
15.4 |
15 |
7.0 |
1 |
10.1 |
3.5 |
1 |
15.6 |
17.6 |
18.2 |
0 |
0 |
0.0 |
58.4 |
18 |
11.4 |
14 |
40.7 |
160.4 |
15.8 |
2 |
4 |
JUN |
|
JUL |
21.3 |
24.5 |
19 |
17.5 |
11 |
12.5 |
17.1 |
16 |
8.8 |
31 |
10.5 |
5.6 |
8, 31 |
16.4 |
18.3 |
18.8 |
0 |
0 |
0.0 |
59.8 |
15 |
16.3 |
20 |
35.9 |
186.4 |
13.3 |
31 |
0 |
JUL |
|
AUG |
21.3 |
29.8 |
5 |
14.6 |
22 |
12.1 |
16.0 |
15 |
8.5 |
10 |
9.8 |
5.0 |
10 |
16.4 |
18.1 |
18.5 |
0 |
0 |
0.0 |
73.0 |
13 |
17.8 |
19 |
53.6 |
190.8 |
14.0 |
5 |
4 |
AUG |
|
SEP |
19.4 |
24.0 |
5 |
11.8 |
26 |
10.7 |
14.4 |
7 |
5.0 |
30 |
8.2 |
1.4 |
30 |
14.5 |
16.5 |
16.8 |
0 |
0 |
0.0 |
27.8 |
11 |
9.2 |
23 |
24.5 |
169.6 |
11.8 |
11 |
1 |
SEP |
|
OCT |
14.9 |
18.9 |
4 |
10.0 |
25 |
8.1 |
13.6 |
13 |
1.2 |
24 |
5.6 |
-2.5 |
24 |
10.8 |
12.5 |
12.7 |
0 |
6 |
0.0 |
46.8 |
7 |
23.8 |
16 |
34.0 |
113.5 |
10.1 |
4 |
6 |
OCT |
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NOV |
10.4 |
16.5 |
1 |
5.5 |
23 |
4.8 |
10.9 |
2 |
-1.0 |
24 |
2.2 |
-5.1 |
15, 24 |
7.0 |
8.3 |
8.4 |
3 |
9 |
9.3 |
44.4 |
9 |
15.9 |
21 |
45.6 |
93.9 |
8.0 |
6 |
4 |
NOV |
|
DEC |
7.8 |
14.1 |
6 |
2.0 |
19, 20 |
3.1 |
12.0 |
5 |
-6.1 |
20 |
0.7 |
-9.8 |
20 |
5.1 |
6.0 |
6.1 |
7 |
12 |
54.8 |
41.9 |
12 |
7.7 |
24 |
41.4 |
74.8 |
6.7 |
23 |
6 |
DEC |
|
YEAR |
15.1 |
X |
X |
X |
X |
7.6 |
X |
X |
X |
X |
5.2 |
X |
X |
10.8 |
12.0 |
12.3 |
23 |
60 |
182.3 |
662.1 |
158 |
X |
X |
580.5 |
1701.0 |
X |
X |
43 |
YEAR |
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 Air 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 |
1013 |
1032 |
27 |
981 |
18 |
1 |
1 |
0 |
0 |
3 |
17 |
7 |
1 |
1 |
6.7 |
67 |
18 |
88.2 |
5.5 |
0 |
0 |
3 |
1 |
0 |
0 |
JAN |
|
FEB |
1005 |
1039 |
3 |
976 |
12 |
0 |
1 |
1 |
2 |
8 |
3 |
7 |
2 |
4 |
2.9 |
53 |
28 |
91.3 |
5.4 |
1 |
0 |
1 |
2 |
0 |
1 |
FEB |
|
MAR |
1014 |
1035 |
14 |
985 |
1 |
4 |
4 |
0 |
1 |
2 |
7 |
8 |
5 |
0 |
3.5 |
51 |
5 |
83.2 |
3.9 |
3 |
2 |
4 |
0 |
3 |
0 |
MAR |
|
APR |
1021 |
1030 |
2 |
1008 |
25 |
12 |
5 |
0 |
1 |
1 |
4 |
5 |
2 |
0 |
1.6 |
30 |
3 |
77.2 |
4.8 |
1 |
0 |
0 |
0 |
0 |
0 |
APR |
|
MAY |
1008 |
1022 |
23 |
991 |
11 |
6 |
5 |
2 |
0 |
3 |
6 |
5 |
3 |
1 |
2.4 |
46 |
10 |
83.4 |
5.5 |
0 |
0 |
0 |
0 |
0 |
1 |
MAY |
|
JUN |
1009 |
1024 |
5 |
994 |
25 |
5 |
6 |
1 |
3 |
4 |
6 |
4 |
1 |
0 |
1.5 |
37 |
29 |
82.8 |
5.9 |
1 |
0 |
0 |
0 |
0 |
6 |
JUN |
|
JUL |
1008 |
1020 |
31 |
993 |
23 |
0 |
1 |
2 |
0 |
3 |
10 |
9 |
5 |
1 |
3.2 |
41 |
26 |
77.1 |
5.6 |
0 |
0 |
0 |
0 |
0 |
4 |
JUL |
|
AUG |
1013 |
1027 |
26 |
990 |
14 |
8 |
1 |
0 |
0 |
3 |
7 |
4 |
8 |
0 |
2.1 |
37 |
15 |
78.7 |
5.0 |
2 |
0 |
0 |
0 |
0 |
1 |
AUG |
|
SEP |
1018 |
1030 |
7 |
998 |
24 |
7 |
1 |
0 |
0 |
1 |
8 |
5 |
7 |
1 |
2.4 |
46 |
24 |
81.7 |
5.2 |
0 |
0 |
0 |
0 |
1 |
1 |
SEP |
|
OCT |
1021 |
1035 |
20 |
1007 |
16 |
2 |
4 |
0 |
2 |
8 |
2 |
4 |
2 |
7 |
2.5 |
44 |
28 |
90.4 |
5.2 |
1 |
0 |
0 |
0 |
0 |
0 |
OCT |
|
NOV |
1017 |
1032 |
2 |
991 |
19 |
0 |
0 |
2 |
3 |
6 |
8 |
9 |
2 |
0 |
5.3 |
39 |
10 |
88.9 |
4.8 |
0 |
0 |
1 |
0 |
0 |
0 |
NOV |
|
DEC |
1017 |
1039 |
14 |
974 |
9 |
0 |
3 |
1 |
3 |
9 |
8 |
5 |
1 |
1 |
6.6 |
55 |
1 |
91.1 |
5.8 |
1 |
1 |
0 |
0 |
0 |
0 |
DEC |
|
YEAR |
1013.7 |
X |
X |
X |
X |
45 |
32 |
9 |
15 |
51 |
86 |
72 |
39 |
16 |
3.4 |
X |
X |
84.5 |
5.2 |
10 |
3 |
9 |
3 |
4 |
14 |
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 14th January 2008 2041 GMT)