Royston (Iceni) Weather Station
2003 Annual Summary
Part1 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 0900 GMT |
Mean Earth 30cms 2100 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 |
6.6 |
13.4 |
27 |
0.1 |
7 |
2.3 |
8.4 |
27 |
-5.7 |
8 |
-0.4 |
-8.8 |
8 |
3.7 |
4.7 |
4.7 |
11 |
12 |
186.3 |
98.0 |
20 |
23.0 |
1 |
90.5 |
67.5 |
6.9 |
11 |
7 |
JAN |
|
FEB |
7.6 |
13.5 |
27 |
2.6 |
13 |
1.2 |
7.0 |
8 |
-6.1 |
18 |
-1.2 |
-10.0 |
18 |
3.5 |
3.5 |
3.7 |
11 |
16 |
128.8 |
16.6 |
10 |
3.8 |
8 |
38.2 |
120.8 |
9.4 |
21 |
5 |
FEB |
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MAR |
13.1 |
18.0 |
23 |
7.0 |
13 |
3.3 |
9.8 |
5 |
-2.4 |
22 |
0.5 |
-5.5 |
19 |
7.2 |
7.0 |
7.5 |
7 |
14 |
29.3 |
19.2 |
3 |
11.6 |
5 |
14.7 |
197.9 |
12.4 |
31 |
1 |
MAR |
|
APR |
15.4 |
25.5 |
16 |
7.5 |
10 |
4.8 |
10.2 |
15 |
-3.4 |
8 |
2.4 |
-6.3 |
8 |
9.3 |
10.0 |
10.6 |
4 |
8 |
28.3 |
24.0 |
9 |
6.4 |
30 |
28.7 |
193.0 |
13.5 |
16 |
0 |
APR |
|
MAY |
17.9 |
26.0 |
30 31 |
13.0 |
16 |
8.4 |
14.9 |
31 |
3.4 |
15 |
6.8 |
0.3 |
15 |
12.5 |
13.8 |
14.5 |
0 |
0 |
0.0 |
36.7 |
16 |
6.4 |
1 |
43.0 |
202.6 |
15.1 |
30 |
2 |
MAY |
|
JUN |
22.6 |
27.5 |
16 |
17.6 |
6 |
12.4 |
16.6 |
23 |
8.6 |
15 |
10.7 |
5.9 |
21 |
17.0 |
18.2 |
18.9 |
0 |
0 |
0.0 |
46.2 |
14 |
17.0 |
22 |
30.8 |
220.7 |
15.5 |
15 |
0 |
JUN |
|
JUL |
23.6 |
31.0 |
15 |
17.3 |
3 |
13.7 |
17.1 |
17 |
10.4 |
5 |
12.2 |
8.5 |
12 |
18.1 |
19.2 |
20.0 |
0 |
0 |
0.0 |
47.7 |
13 |
10.8 |
26 |
40.1 |
203.0 |
16.0 |
13 |
3 |
JUL |
|
AUG |
25.7 |
36.4 |
10 |
19.2 |
28 |
13.9 |
19.8 |
10 |
6.9 |
30 |
11.6 |
4.3 |
31 |
19.2 |
20.2 |
21.0 |
0 |
0 |
0.0 |
0.7 |
1 |
0.7 |
1 |
1.5 |
239.2 |
14.3 |
2 |
1 |
AUG |
|
SEP |
21.3 |
27.2 |
16 |
14.5 |
23 |
10.3 |
15.2 |
22 |
4.9 |
24 |
7.6 |
1.5 |
24 |
15.0 |
16.2 |
16.8 |
0 |
0 |
0.0 |
17.1 |
7 |
5.9 |
6 |
15.7 |
216.8 |
12.3 |
4 |
0 |
SEP |
|
OCT |
13.9 |
19.3 |
1 |
8.7 |
22 |
5.0 |
13.0 |
10 |
0.2 |
24 |
2.4 |
-3.1 |
24 |
8.3 |
10.4 |
10.7 |
0 |
13 |
0.0 |
34.1 |
15 |
13.5 |
30 |
48.8 |
167.2 |
9.8 |
11 |
1 |
OCT |
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NOV |
11.3 |
15.3 |
6 |
7.0 |
23 |
6.6 |
11.6 |
18 |
1.0 |
27 |
5.4 |
-2.0 |
27 |
8.3 |
8.6 |
8.7 |
0 |
2 |
0.0 |
103.8 |
16 |
20.6 |
22 |
102.1 |
92.2 |
7.9 |
7 |
6 |
NOV |
|
DEC |
7.7 |
14.0 |
12 |
2.9 |
29 30 |
3.3 |
12.1 |
13 |
-4.1 |
8 |
1.5 |
-6.9 |
8 |
4.7 |
5.8 |
5.8 |
5 |
11 |
50.7 |
57.2 |
18 |
8.3 |
20 |
80.1 |
76.6 |
6.8 |
7 |
13 |
DEC |
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YEAR |
15.6 |
X |
X |
X |
X |
7.1 |
X |
X |
X |
X |
5.0 |
X |
X |
10.6 |
11.5 |
11.9 |
38 |
76 |
423.4 |
501.3 |
142 |
X |
X |
534.2 |
1997.5 |
X |
X |
39 |
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 0900 GMT (oktas) |
Fog (visibility < 1000m @ 0900 GMT) |
Fog (visibility < 200m @ 0900 GMT) |
Snow or Rain and Snow |
Snow Lying (> 50% cover @ 0900 GMT) |
Hail |
Thiunder |
Month |
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JAN |
1016 |
1039 |
11 |
976 |
2 |
2 |
4 |
1 |
1 |
4 |
8 |
6 |
3 |
2 |
5.7 |
48 |
30 |
90.7 |
5.6 |
0 |
0 |
6 |
3 |
2 |
0 |
JAN |
|
FEB |
1020 |
1041 |
17 |
991 |
3 |
1 |
2 |
4 |
6 |
6 |
4 |
2 |
1 |
2 |
3.3 |
39 |
3 28 |
86.2 |
4.8 |
3 |
3 |
2 |
2 |
1 |
0 |
FEB |
|
MAR |
1023 |
1043 |
16 |
1007 |
2 |
3 |
7 |
2 |
0 |
4 |
6 |
3 |
2 |
4 |
3.7 |
41 |
8 |
78.2 |
3.7 |
3 |
1 |
0 |
0 |
0 |
0 |
MAR |
|
APR |
1018 |
1036 |
5 |
992 |
28 |
2 |
7 |
5 |
3 |
2 |
6 |
0 |
5 |
0 |
3.4 |
39 |
28 |
72.2 |
4.6 |
0 |
0 |
2 |
0 |
2 |
1 |
APR |
|
MAY |
1016 |
1028 |
7 |
997 |
2 |
1 |
2 |
0 |
2 |
5 |
12 |
7 |
2 |
0 |
4.7 |
44 |
12 |
74.5 |
4.6 |
0 |
0 |
0 |
0 |
1 |
1 |
MAY |
|
JUN |
1015 |
1025 |
13 |
999 |
30 |
1 |
1 |
3 |
5 |
3 |
9 |
6 |
2 |
0 |
3.3 |
44 |
19 |
71.6 |
5.1 |
0 |
0 |
0 |
0 |
0 |
3 |
JUN |
|
JUL |
1015 |
1025 |
12 |
997 |
1 |
2 |
2 |
1 |
1 |
3 |
9 |
10 |
3 |
0 |
3.6 |
32 |
25 |
73.1 |
5.0 |
0 |
0 |
0 |
0 |
0 |
3 |
JUL |
|
AUG |
1019 |
1025 |
5 |
1005 |
29 |
3 |
8 |
1 |
3 |
2 |
2 |
7 |
5 |
0 |
2.1 |
30 |
21 |
67.5 |
3.6 |
0 |
0 |
0 |
0 |
0 |
1 |
AUG |
|
SEP |
1020 |
1034 |
24 |
1000 |
22 |
1 |
1 |
0 |
5 |
4 |
8 |
5 |
4 |
2 |
2.2 |
39 |
22 |
71.0 |
3.2 |
0 |
0 |
0 |
0 |
0 |
1 |
SEP |
|
OCT |
1014 |
1033 |
16 |
971 |
31 |
0 |
13 |
0 |
0 |
1 |
4 |
10 |
2 |
1 |
2.8 |
39 |
8 |
81.5 |
4.0 |
1 |
0 |
0 |
0 |
2 |
0 |
OCT |
|
NOV |
1012 |
1031 |
7 |
983 |
26 |
1 |
2 |
0 |
4 |
10 |
9 |
1 |
2 |
1 |
4.5 |
46 |
14 |
91.7 |
5.2 |
1 |
0 |
0 |
0 |
0 |
0 |
NOV |
|
DEC |
1017 |
1035 |
6 7 |
988 |
28 |
0 |
5 |
1 |
5 |
3 |
7 |
2 |
4 |
4 |
3.7 |
46 |
20 21 |
90.9 |
4.9 |
2 |
2 |
2 |
0 |
0 |
0 |
DEC |
|
YEAR |
1017.1 |
X |
X |
X |
X |
17 |
54 |
18 |
35 |
47 |
84 |
59 |
35 |
16 |
3.6 |
X |
X |
79.1 |
4.5 |
10 |
6 |
12 |
5 |
8 |
10 |
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 20th January 2004 2056 GMT)