Royston (Iceni) Weather Station
2002 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 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 |
8.6 |
13.5 |
27 |
2.2 |
2 |
4.4 |
11.5 |
21 |
-3.5 |
4 |
2.4 |
-7.9 |
2 |
5.8 |
4.7 |
4.9 |
4 |
8 |
40.6 |
33.2 |
14 |
7.2 |
26 |
44.5 |
68.0 |
7.2 |
19 |
8 |
JAN |
|
FEB |
10.7 |
13.3 |
11 |
6.5 |
23 |
4.9 |
12.2 |
2 |
-2.5 |
15 |
2.7 |
-6.9 |
15 |
6.6 |
6.6 |
6.8 |
4 |
8 |
30.6 |
48.9 |
17 |
9.6 |
3 |
61.6 |
87.6 |
8.4 |
15 |
8 |
FEB |
|
MAR |
12.2 |
16.7 |
30 |
7.2 |
13 |
4.2 |
10.2 |
7 |
-2.8 |
2 |
1.5 |
-7.3 |
2 |
7.4 |
7.8 |
8.3 |
1 |
11 |
11.4 |
35.5 |
10 |
10.1 |
18 |
53.3 |
129.3 |
12.1 |
28 |
2 |
MAR |
|
APR |
15.2 |
22.7 |
23 |
10.3 |
9 |
4.7 |
9.5 |
3 |
-0.1 |
7 |
2.3 |
-3.4 |
7 |
9.2 |
10.7 |
11.3 |
1 |
10 |
1.0 |
35.9 |
9 |
10.3 |
30 |
34.7 |
208.2 |
13.4 |
23 |
0 |
APR |
|
MAY |
17.0 |
23.5 |
16 |
11.5 |
9 |
8.3 |
13.0 |
21 |
1.5 |
5 |
6.8 |
-1.6 |
5 |
11.9 |
13.8 |
14.5 |
0 |
1 |
0.0 |
60.6 |
16 |
11.2 |
13 |
53.6 |
173.3 |
14.3 |
16 |
3 |
MAY |
|
JUN |
20.0 |
27.7 |
17 |
14.5 |
5 |
11.2 |
15.5 |
17 18 |
8.1 |
28 29 |
9.3 |
5.5 |
29 |
15.3 |
17.2 |
17.8 |
0 |
0 |
0.0 |
29.4 |
13 |
10.5 |
5 |
27.0 |
188.0 |
16.1 |
17 |
3 |
JUN |
|
JUL |
22.0 |
30.8 |
29 |
16.5 |
3 |
12.7 |
17.2 |
30 |
9.0 |
14 |
11.0 |
6.4 |
14 |
16.8 |
18.4 |
19.0 |
0 |
0 |
0.0 |
104.7 |
13 |
48.8 |
30 |
58.4 |
180.1 |
15.0 |
14 |
0 |
JUL |
|
AUG |
22.6 |
30.0 |
17 |
16.3 |
26 |
13.9 |
17.2 |
19 |
11.0 |
21 26 |
12.1 |
8.9 |
21 |
17.6 |
19.4 |
19.9 |
0 |
0 |
0.0 |
49.6 |
11 |
17.4 |
7 |
35.6 |
141.1 |
12.0 |
14 |
1 |
AUG |
|
SEP |
19.6 |
24.5 |
13 |
15.8 |
18 |
10.1 |
14.9 |
6 |
4.7 |
24 |
7.8 |
2.1 |
24 |
14.1 |
16.3 |
16.8 |
0 |
0 |
0.0 |
38.0 |
6 |
32.9 |
9 |
16.6 |
158.1 |
11.7 |
1 |
0 |
SEP |
|
OCT |
14.1 |
21.5 |
1 |
10.0 |
30 |
7.7 |
13.6 |
2 |
1.1 |
19 |
5.5 |
-1.9 |
19 |
10.0 |
11.8 |
12.0 |
0 |
0 |
0.0 |
65.5 |
15 |
21.4 |
15 |
62.3 |
98.0 |
8.9 |
4 |
6 |
OCT |
|
NOV |
11.1 |
15.4 |
2 |
7.9 |
25 |
6.6 |
12.3 |
6 |
1.5 |
18 |
4.4 |
-2.4 |
18 |
8.1 |
9.0 |
9.1 |
0 |
1 |
0.0 |
98.0 |
22 |
12.8 |
6 |
115.8 |
71.4 |
7.9 |
4 |
7 |
NOV |
|
DEC |
7.6 |
12.9 |
24 |
1.7 |
10 |
4.4 |
9.7 |
24 |
-1.2 |
20 |
2.7 |
-5.6 |
20 |
5.4 |
6.7 |
6.8 |
5 |
8 |
27.4 |
83.5 |
21 |
18.0 |
21 |
120.3 |
30.4 |
6.7 |
9 |
15 |
DEC |
|
YEAR |
15.1 |
X |
X |
X |
X |
7.8 |
X |
X |
X |
X |
5.7 |
X |
X |
10.7 |
11.9 |
12.3 |
15 |
47 |
111.0 |
682.8 |
167 |
X |
X |
683.7 |
1533.5 |
X |
X |
53 |
YEAR |
Part 2 Air Pressure, Wind Direction, Wind Speed, Relative Humidity, Cloud Cover, Fog, Snow Falling, Snow Lying, Hail & Thunder
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|
Air P r e s s u r e (mb) |
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Wind Direction 0900h (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 09h (oktas) |
Fog (visibility < 1000m @ 0900 GMT) |
Fog (visibility < 200m @ 0900 GMT) |
Snow or Rain and Snow |
Snow Lying (> 50% cover @ 0900 GMT) |
Hail |
Thunder |
Month |
|
JAN |
1018.9 |
1040 |
1 |
977 |
24 |
0 |
0 |
0 |
4 |
8 |
12 |
5 |
0 |
2 |
6.8 |
58 |
28 |
91.1 |
5.7 |
2 |
1 |
0 |
0 |
0 |
0 |
JAN |
|
FEB |
1009.3 |
1037 |
15 |
981 |
26 |
1 |
0 |
0 |
0 |
6 |
10 |
8 |
0 |
3 |
9.8 |
65 |
26 |
84.4 |
5.5 |
1 |
1 |
1 |
0 |
1 |
0 |
FEB |
|
MAR |
1017.6 |
1037 |
24 |
986 |
18 |
2 |
4 |
3 |
1 |
6 |
7 |
6 |
1 |
1 |
4.9 |
62 |
9 10 |
81.6 |
5.6 |
0 |
0 |
0 |
0 |
0 |
0 |
MAR |
|
APR |
1016.7 |
1036 |
21 |
990 |
29 |
3 |
7 |
0 |
2 |
4 |
4 |
6 |
4 |
0 |
4.3 |
53 |
28 |
74.7 |
3.8 |
1 |
0 |
0 |
0 |
2 |
0 |
APR |
|
MAY |
1012.1 |
1027 |
31 |
991 |
22 |
4 |
3 |
1 |
2 |
7 |
9 |
2 |
3 |
0 |
4.7 |
46 |
24 |
79.9 |
5.6 |
1 |
0 |
0 |
0 |
1 |
2 |
MAY |
|
JUN |
1014.7 |
1029 |
24 25 |
996 |
5 |
2 |
0 |
0 |
3 |
3 |
9 |
12 |
1 |
0 |
4.3 |
37 |
10 |
74.0 |
5.1 |
0 |
0 |
0 |
0 |
0 |
1 |
JUN |
|
JUL |
1014.5 |
1029 |
14 |
991 |
3 |
6 |
1 |
0 |
1 |
3 |
8 |
6 |
5 |
1 |
3.2 |
39 |
23 |
76.7 |
4.8 |
0 |
0 |
0 |
0 |
0 |
6 |
JUL |
|
AUG |
1015.6 |
1031 |
31 |
1001 |
9 |
7 |
1 |
0 |
2 |
1 |
3 |
5 |
6 |
6 |
1.6 |
28 |
17 30 |
80.5 |
5.5 |
0 |
0 |
0 |
0 |
0 |
2 |
AUG |
|
SEP |
1020.9 |
1033 |
1 |
1001 |
9 |
7 |
7 |
0 |
2 |
2 |
4 |
0 |
3 |
5 |
1.7 |
41 |
6 |
79.0 |
4.9 |
2 |
1 |
0 |
0 |
0 |
0 |
SEP |
|
OCT |
1011.0 |
1031 |
4 |
977 |
22 |
1 |
4 |
0 |
5 |
2 |
1 |
8 |
4 |
6 |
3.3 |
71 |
27 |
84.7 |
5.7 |
0 |
0 |
0 |
0 |
0 |
0 |
OCT |
|
NOV |
1004.5 |
1024 |
5 |
968 |
14 |
0 |
0 |
1 |
5 |
9 |
7 |
3 |
1 |
4 |
3.9 |
46 |
14 |
94.5 |
5.6 |
4 |
2 |
0 |
0 |
0 |
1 |
NOV |
|
DEC |
1013.5 |
1035 |
18 |
987 |
27 |
2 |
8 |
4 |
2 |
4 |
4 |
3 |
2 |
2 |
3.6 |
46 |
30 |
93.7 |
6.9 |
2 |
1 |
0 |
0 |
0 |
0 |
DEC |
|
YEAR |
1014.1 |
X |
X |
X |
X |
35 |
35 |
9 |
29 |
55 |
78 |
64 |
30 |
30 |
4.3 |
X |
X |
82.9 |
5.4 |
13 |
6 |
1 |
0 |
4 |
12 |
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 2003 2037 GMT)