Royston (Iceni) Weather Station
2005 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 |
8.6 |
13.9 |
7 |
2.9 |
24 |
3.8 |
11.8 |
10 |
-2.6 |
26 |
1.7 |
-7.0 |
26 |
5.7 |
5.5 |
5.6 |
3 |
9 |
29.6 |
31.5 |
16 |
5.5 |
20 |
51.1 |
87.0 |
6.9 |
23 |
4 |
JAN |
|
FEB |
6.8 |
12.2 |
12 |
2.5 |
23, 24 |
1.8 |
10.6 |
12 |
-4.5 |
28 |
-0.4 |
-9.3 |
28 |
3.6 |
5.4 |
5.6 |
8 |
19 |
62.2 |
27.1 |
16 |
8.9 |
10 |
63.2 |
62.6 |
8.2 |
7 |
8 |
FEB |
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MAR |
10.8 |
18.0 |
18 |
3.3 |
2 |
4.2 |
11.2 |
17 |
-3.6 |
4 |
1.8 |
-8.5 |
4 |
6.7 |
6.8 |
7.2 |
7 |
10 |
49.3 |
35.9 |
16 |
11.2 |
26 |
34.1 |
84.8 |
10.7 |
17 |
4 |
MAR |
|
APR |
14.5 |
21.1 |
30 |
7.7 |
8 |
5.4 |
12.5 |
30 |
-2.1 |
9 |
3.1 |
-5.0 |
9 |
9.3 |
10.6 |
11.1 |
1 |
5 |
9.7 |
39.8 |
13 |
9.7 |
14 |
32.9 |
143.5 |
12.8 |
29 |
1 |
APR |
|
MAY |
17.3 |
30.3 |
27 |
11.1 |
4 |
7.6 |
14.5 |
27 |
1.0 |
12 |
5.3 |
-1.6 |
12 |
11.8 |
13.9 |
14.6 |
0 |
7 |
0.0 |
35.3 |
15 |
15.8 |
21 |
31.2 |
212.0 |
14.5 |
15 |
0 |
MAY |
|
JUN |
22.0 |
31.7 |
19 |
15.7 |
11 |
11.5 |
18.9 |
20 |
3.6 |
7 |
9.3 |
-0.1 |
7 |
16.3 |
17.5 |
18.2 |
0 |
1 |
0.0 |
41.2 |
9 |
11.9 |
28 |
17.7 |
211.8 |
16.2 |
27 |
1 |
JUN |
|
JUL |
22.1 |
29.6 |
14 |
15.8 |
25 |
13.2 |
17.4 |
15 |
10.4 |
5 |
11.6 |
8.1 |
16 |
17.1 |
18.8 |
19.4 |
0 |
0 |
0.0 |
33.8 |
13 |
7.6 |
24 |
43.9 |
179.7 |
15.2 |
17 |
2 |
JUL |
|
AUG |
22.5 |
31.4 |
31 |
15.8 |
19 |
12.1 |
15.4 |
31 |
8.5 |
7 8 |
9.9 |
5.9 |
8 |
16.7 |
18.0 |
18.6 |
0 |
0 |
0.0 |
62.6 |
13 |
16.5 |
22 |
57.3 |
199.3 |
13.4 |
17 |
1 |
AUG |
|
SEP |
20.9 |
27.4 |
4 |
15.3 |
16 |
12.0 |
16.6 |
5 |
4.0 |
17 |
10.0 |
1.9 |
17 |
15.7 |
17.3 |
17.7 |
0 |
0 |
0.0 |
59.5 |
14 |
23.3 |
4 |
50.6 |
174.1 |
11.7 |
2 |
2 |
SEP |
|
OCT |
17.2 |
22.5 |
10 |
13.5 |
18 |
10.7 |
15.9 |
12 |
6.2 |
4 |
8.7 |
2.3 |
18 |
13.1 |
13.8 |
13.9 |
0 |
0 |
0.0 |
63.4 |
14 |
18.3 |
23 |
61.2 |
125.1 |
9.9 |
4 |
4 |
OCT |
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NOV |
9.3 |
17.5 |
2 |
3.0 |
25 |
3.9 |
12.9 |
11 |
-2.3 |
18 |
1.9 |
-5.5 |
18 |
5.8 |
8.4 |
8.4 |
8 |
11 |
72.0 |
46.5 |
13 |
18.6 |
2 |
39.3 |
108.5 |
7.7 |
7 |
5 |
NOV |
|
DEC |
7.1 |
10.5 |
15, 16 |
0.5 |
28 |
2.6 |
7.9 |
16 |
-4.2 |
28 |
0.5 |
-9.5 |
28 |
4.4 |
5.1 |
5.2 |
7 |
16 |
94.8 |
22.6 |
12 |
9.5 |
30 |
34.1 |
95.9 |
6.6 |
17 |
4 |
DEC |
|
YEAR |
14.9 |
X |
X |
X |
X |
7.4 |
X |
X |
X |
X |
5.3 |
X |
X |
10.5 |
11.8 |
12.1 |
34 |
78 |
317.6 |
499.2 |
164 |
X |
X |
516.6 |
1684.3 |
X |
X |
36 |
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 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 |
1021 |
1035 |
26 |
993 |
18 |
5 |
0 |
0 |
0 |
5 |
13 |
5 |
1 |
2 |
6.4 |
62 |
8 |
87.1 |
4.9 |
0 |
0 |
1 |
0 |
1 |
0 |
JAN |
|
FEB |
1021 |
1036 |
3 |
998 |
12 |
8 |
2 |
0 |
4 |
1 |
3 |
4 |
5 |
1 |
3.0 |
48 |
12, 13 |
88.6 |
5.9 |
0 |
0 |
9 |
5 |
4 |
0 |
FEB |
|
MAR |
1015 |
1034 |
9 |
998 |
2 |
3 |
2 |
3 |
1 |
4 |
5 |
8 |
3 |
2 |
3.0 |
41 |
16 |
84.9 |
6.6 |
3 |
1 |
4 |
1 |
1 |
0 |
MAR |
|
APR |
1012 |
1031 |
11 |
990 |
18 |
3 |
0 |
2 |
1 |
4 |
11 |
3 |
4 |
2 |
2.5 |
44 |
6 |
78.7 |
5.6 |
1 |
0 |
1 |
0 |
2 |
3 |
APR |
|
MAY |
1015 |
1028 |
11 |
1001 |
22 |
3 |
5 |
1 |
1 |
6 |
6 |
5 |
4 |
0 |
3.1 |
41 |
7 |
74.8 |
5.7 |
0 |
0 |
0 |
0 |
2 |
3 |
MAY |
|
JUN |
1017 |
1037 |
8 |
1003 |
3 |
4 |
5 |
0 |
1 |
7 |
7 |
4 |
2 |
0 |
2.4 |
35 |
4 |
73.5 |
5.5 |
0 |
0 |
0 |
0 |
0 |
4 |
JUN |
|
JUL |
1014 |
1032 |
12 |
999 |
25 |
4 |
3 |
1 |
1 |
1 |
7 |
8 |
5 |
1 |
2.1 |
37 |
6 |
77.1 |
5.7 |
1 |
0 |
0 |
0 |
0 |
0 |
JUL |
|
AUG |
1016 |
1025 |
15 |
1001 |
25 |
4 |
1 |
0 |
3 |
3 |
4 |
9 |
7 |
0 |
1.7 |
37 |
24 |
75.4 |
3.9 |
0 |
0 |
0 |
0 |
0 |
3 |
AUG |
|
SEP |
1016 |
1029 |
3 |
1006 |
25 |
3 |
4 |
1 |
0 |
5 |
10 |
4 |
1 |
2 |
1.8 |
37 |
28 |
82.3 |
4.9 |
1 |
1 |
0 |
0 |
0 |
4 |
SEP |
|
OCT |
1014 |
1032 |
3 |
990 |
21 |
0 |
3 |
1 |
6 |
7 |
7 |
0 |
2 |
5 |
2.0 |
44 |
24 |
89.9 |
5.1 |
3 |
0 |
0 |
0 |
0 |
1 |
OCT |
|
NOV |
1015 |
1040 |
22 |
986 |
25 |
1 |
0 |
0 |
0 |
7 |
7 |
8 |
3 |
4 |
2.8 |
44 |
3 |
91.2 |
4.5 |
2 |
0 |
0 |
0 |
0 |
0 |
NOV |
|
DEC |
1017 |
1041 |
12 |
976 |
2 |
4 |
1 |
0 |
1 |
7 |
6 |
6 |
3 |
3 |
2.4 |
48 |
30 |
91.5 |
5.1 |
0 |
0 |
2 |
4 |
0 |
0 |
DEC |
|
YEAR |
1016.1 |
X |
X |
X |
X |
42 |
26 |
9 |
19 |
57 |
86 |
64 |
40 |
22 |
2.8 |
X |
X |
82.9 |
5.3 |
11 |
2 |
17 |
10 |
10 |
18 |
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 10th January 2006 2133 GMT)