Royston (Iceni) Weather Station
2008 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 |
9.7 |
14.1 |
20 |
3.9 |
3 |
5.0 |
12.1 |
19, 20 |
0.3 |
28 |
3.3 |
-2.2 |
28 |
6.9 |
6.5 |
6.6 |
0 |
6 |
0.0 |
58.6 |
19 |
13.3 |
11 |
64.6 |
75.9 |
7.1 |
27 |
6 |
JAN |
|
FEB |
9.8 |
13.9 |
10 |
3.9 |
19 |
2.3 |
9.5 |
22 |
-5.5 |
17 |
-1.2 |
-11.3 |
17 |
5.4 |
5.0 |
5.1 |
7 |
14 |
69.9 |
12.9 |
7 |
3.7 |
4 |
20.1 |
145.0 |
9.4 |
18 |
2 |
FEB |
|
MAR |
10.1 |
14.7 |
30 |
3.4 |
23 |
3.2 |
8.7 |
2 |
-2.5 |
5 |
0.5 |
-7.8 |
5 |
6.0 |
6.9 |
7.2 |
5 |
11 |
49.8 |
78.2 |
19 |
22.0 |
15 |
69.3 |
117.5 |
10.5 |
30 |
1 |
MAR |
|
APR |
13.4 |
21.8 |
26 |
7.1 |
6 |
4.5 |
12.0 |
27 |
-0.5 |
6 |
1.6 |
-4.9 |
15 |
8.3 |
9.7 |
10.1 |
3 |
11 |
5.3 |
52.2 |
16 |
11.2 |
29 |
40.1 |
168.4 |
11.2 |
26 |
1 |
APR |
|
MAY |
19.2 |
26.5 |
11 |
11.9 |
16 |
8.9 |
12.9 |
9,10,28 |
1.5 |
19 |
6.6 |
-2.0 |
20 |
13.6 |
14.5 |
15.0 |
0 |
3 |
0.0 |
73.7 |
13 |
18.5 |
26 |
59.4 |
205.0 |
14.2 |
11 |
4 |
MAY |
|
JUN |
20.1 |
25.8 |
9 |
14.9 |
3 |
11.1 |
16.3 |
28 |
6.4 |
16 |
9.0 |
2.7 |
16 |
15.2 |
17.0 |
17.5 |
0 |
0 |
0.0 |
38.5 |
10 |
11.9 |
3 |
51.3 |
207.0 |
15.4 |
9 |
3 |
JUN |
|
JUL |
22.5 |
29.1 |
28 |
16.8 |
17 |
13.1 |
17.4 |
27 |
9.2 |
21 |
10.9 |
6.0 |
21, 22 |
17.4 |
18.4 |
18.9 |
0 |
0 |
0.0 |
59.0 |
16 |
15.8 |
9 |
45.0 |
212.2 |
14.9 |
1 |
2 |
JUL |
|
AUG |
21.3 |
25.0 |
30 |
17.1 |
8 |
13.7 |
17.5 |
29 |
9.3 |
23 |
11.7 |
6.9 |
23 |
16.9 |
18.4 |
18.7 |
0 |
0 |
0.0 |
92.0 |
19 |
40.4 |
7 |
53.2 |
126.4 |
11.8 |
15 |
1 |
AUG |
|
SEP |
18.3 |
20.9 |
19 |
14.8 |
30 |
10.3 |
14.6 |
11 |
6.5 |
21 26 |
8.0 |
2.5 |
26 |
13.5 |
15.9 |
16.1 |
0 |
0 |
0.0 |
30.4 |
16 |
6.9 |
5 |
29.9 |
122.8 |
10.6 |
20 |
4 |
SEP |
|
OCT |
14.4 |
21.6 |
12 |
7.4 |
29 |
7.1 |
14.0 |
13 |
-2.5 |
29 |
4.6 |
-6.0 |
29 |
9.8 |
11.8 |
11.9 |
2 |
6 |
11.8 |
53.2 |
15 |
19.9 |
28 |
49.4 |
153.0 |
9.8 |
11 |
2 |
OCT |
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NOV |
9.7 |
14.4 |
14 |
3.5 |
29 |
5.3 |
10.6 |
16 |
-2.2 |
23 |
3.5 |
-6.0 |
23 |
7.0 |
8.2 |
8.4 |
3 |
7 |
23.4 |
77.4 |
20 |
20.3 |
1 |
84.3 |
65.9 |
7.1 |
11 |
11 |
NOV |
|
DEC |
6.1 |
13.1 |
20 |
0.6 |
31 |
1.8 |
10.1 |
20 |
-3.3 |
30 |
-0.1 |
-7.5 |
30 |
3.6 |
5.3 |
5.4 |
12 |
18 |
83.4 |
22.2 |
11 |
9.9 |
13 |
26.0 |
88.5 |
6.8 |
10 |
7 |
DEC |
|
YEAR |
14.6 |
X |
X |
X |
X |
7.2 |
X |
X |
X |
X |
4.9 |
X |
X |
10.3 |
11.5 |
11.7 |
32 |
76 |
243.6 |
648.3 |
181 |
X |
X |
592.6 |
1687.6 |
X |
X |
44 |
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 |
1009 |
1033 |
25, 28 |
971 |
15 |
0 |
0 |
2 |
1 |
6 |
12 |
10 |
0 |
0 |
9.0 |
76 |
17 |
90.4 |
5.9 |
2 |
1 |
1 |
0 |
0 |
0 |
JAN |
|
FEB |
1020 |
1043 |
16 |
985 |
4 |
0 |
2 |
3 |
1 |
6 |
9 |
4 |
1 |
3 |
6.0 |
58 |
29 |
85.3 |
3.7 |
2 |
1 |
0 |
0 |
0 |
0 |
FEB |
|
MAR |
1003 |
1034 |
5 |
958 |
10 |
4 |
1 |
0 |
2 |
4 |
5 |
10 |
5 |
0 |
8.2 |
62 |
1 11 |
82.8 |
5.9 |
1 |
0 |
4 |
1 |
3 |
0 |
MAR |
|
APR |
1008 |
1029 |
3 |
983 |
30 |
3 |
4 |
4 |
0 |
2 |
8 |
6 |
3 |
0 |
5.1 |
41 |
1 |
81.2 |
5.1 |
0 |
0 |
2 |
1 |
3 |
2 |
APR |
|
MAY |
1013 |
1024 |
5 |
998 |
28 |
1 |
16 |
2 |
7 |
1 |
2 |
1 |
1 |
0 |
3.0 |
39 |
26 |
78.5 |
4.6 |
0 |
0 |
0 |
0 |
0 |
2 |
MAY |
|
JUN |
1013 |
1023 |
9 |
1000 |
19 |
3 |
3 |
0 |
2 |
1 |
3 |
11 |
7 |
0 |
5.0 |
41 |
22 |
77.0 |
5.1 |
1 |
0 |
0 |
0 |
0 |
0 |
JUN |
|
JUL |
1010 |
1024 |
23 |
991 |
7 |
1 |
0 |
2 |
3 |
3 |
9 |
8 |
5 |
0 |
4.9 |
37 |
19 |
76.1 |
4.7 |
0 |
0 |
0 |
0 |
0 |
3 |
JUL |
|
AUG |
1006 |
1018 |
26 |
983 |
12 |
1 |
0 |
0 |
1 |
3 |
13 |
10 |
3 |
0 |
6.0 |
46 |
13 |
83.6 |
5.8 |
1 |
0 |
0 |
0 |
0 |
2 |
AUG |
|
SEP |
1014 |
1036 |
26 |
983 |
5 |
2 |
4 |
2 |
0 |
4 |
6 |
4 |
5 |
3 |
3.8 |
44 |
3 |
86.0 |
5.6 |
2 |
1 |
0 |
0 |
0 |
1 |
SEP |
|
OCT |
1011 |
1029 |
9 |
992 |
5, 30 |
1 |
1 |
0 |
1 |
4 |
11 |
7 |
6 |
0 |
6.1 |
46 |
1 |
87.8 |
4.3 |
0 |
0 |
1 |
0 |
0 |
0 |
OCT |
|
NOV |
1010 |
1034 |
17 |
983 |
23 |
5 |
3 |
1 |
1 |
4 |
4 |
7 |
3 |
2 |
5.6 |
46 |
9 10 |
93.4 |
6.0 |
3 |
1 |
1 |
0 |
0 |
0 |
NOV |
|
DEC |
1016 |
1038 |
26 |
975 |
4 |
1 |
2 |
3 |
0 |
5 |
5 |
7 |
6 |
2 |
4.6 |
46 |
19 |
94.9 |
5.1 |
0 |
0 |
0 |
0 |
0 |
0 |
DEC |
|
YEAR |
1011.1 |
X |
X |
X |
X |
22 |
36 |
19 |
19 |
43 |
87 |
85 |
45 |
10 |
5.6 |
X |
X |
84.8 |
5.2 |
12 |
4 |
9 |
2 |
6 |
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 17th January 2009 2024 GMT)