Monthly Report for July 2009

Weather Summary
Measure	Mean / Sum (anomaly)	Min	Max	Mean Time
Minimum Temperature	13.5 °C (-0.7)	10.4 °C	18.6 °C	08:14
Maximum Temperature	21.7 °C (-1.3)	18.0 °C	29.5 °C	15:32
Mean Temperature	17.0 °C (-1.0)	14.7 °C	21.7 °C
Minimum Humidity	53%	38%	75%	15:37
Maximum Humidity	90%	79%	97%	07:38
Mean Humidity	74%	60%	88%
Minimum Pressure	1009 hPa	1001 hPa	1021 hPa	12:40
Maximum Pressure	1015 hPa	1004 hPa	1024 hPa	11:24
Mean Pressure	1012 hPa	1002 hPa	1022 hPa
Mean Wind Speed	6.0 mph (+1.7)	3.9 mph	8.5 mph
Maximum Wind Speed	n/a	n/a	n/a
Maximum Gust	24.2 mph	17.0 mph	36.0 mph
Mean Wind Direction	n/a	n/a	n/a
Rainfall	55.4 mm (120%)	0.0 mm	10.2 mm
Maximum Hourly Rain	1.7 mm	0.3 mm	5.5 mm	15:20
Maximum 10-min Rain	1.1 mm	0.3 mm	2.8 mm	15:11
Maximum Rain Rate	14 mm/h	0.3 mm/h	49 mm/h	16:04
Minimum Dew Point	9.4 °C	5.9 °C	12.2 °C	11:18
Maximum Dew Point	14.5 °C	10.7 °C	18.8 °C	11:24
Mean Dew Point	12.0 °C	7.3 °C	15.5 °C
Night Minimum (21-09)	13.5 °C	10.4 °C	18.6 °C
Day Maximum (09-21)	21.7 °C	18.0 °C	29.5 °C
Max 10m Temp Rise	0.9 °C	0.4 °C	1.7 °C	11:05
Max 1hr Temp Rise	2.3 °C	1.3 °C	4.4 °C	12:40
Max 1hr Hum Rise	10%	5%	22%	17:07
Max 10m Temp Fall	0.8 °C	0.4 °C	1.8 °C	12:46
Max 1hr Temp Fall	1.9 °C	1.2 °C	3.4 °C	16:41
Max 1hr Hum Fall	11%	5%	17%	12:28
Max 10m Wind Speed	4.3 mph	2.8 mph	5.8 mph
Minimum Feels-like	n/a	n/a	n/a
Maximum Feels-like	n/a	n/a	n/a
Mean Feels-like	n/a	n/a	n/a
Air-frost Hrs	0 hrs	0 hrs	0 hrs
Minimum PM2.5	0.0 µg/m³	0.0 µg/m³	0.0 µg/m³
Maximum PM2.5	n/a	n/a	n/a
Mean PM2.5	n/a	n/a	n/a
Temperature Range	8.2 °C (-0.6)	4.2 °C	14.5 °C
Humidity Range	38%	18%	52%
Pressure Range	6 hPa	1 hPa	12 hPa
Sun Hours	165 (85%) [36%]
Wet Hours	48 (141%) [6.5%]

NB: Hover over a value to see how many days of data it is from. Sun hrs, Wet hrs, Cloud cover and Events are based on manual observation and provided for interest only.

Written report

July 2009

July 2009: 2nd-coldest of 18 station Julys, and dull too

Mean 17.0°C, 1.6°C below normal, 2nd-coldest of 18 station Julys. Highs averaged 21.7°C and lows 13.5°C. Warmest 29.5°C (2 Jul), coldest night 10.4°C (10 Jul).
Rain 55.4 mm, 120% of normal, over 15 days of 1 mm+. Wettest day: 10.2 mm on 16 Jul.
Sunshine 165.3 hours, 85% of normal, 4th-dullest of 18 station Julys.
Date records still standing: 2 Jul (29.5°C max), 3 Jul (18.6°C min), 8 Jul (18.0°C low max), 9 Jul (10.9°C low min).

Written Mon 2 Nov, 18:03 GMT

‹ Jun 2009 Aug 2009 ›

Written reports for 2009: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec · the year

Days Of...
Rainfall		Temperature		Sunshine		Other
> 0.0 mm	20	Min < -5.0 °C	0	> 0 hrs	31	Falling Snow	0
> 0.1 mm	17	Min < 0.0 °C	0	> 1 hrs	29	Lying Snow	0
> 0.3 mm	17	Mean < 0.0 °C	0	> 3 hrs	23	Hail	0
> 1.0 mm	15	Mean > 20.0 °C	3	> 5 hrs	16	Thunder	3
> 5.0 mm	2	Max > 25.0 °C	4	> 10 hrs	2	Dense Fog	0
> 10.0 mm	1	Max > 30.0 °C	0	> 25% max poss.	23	Gusts > 30mph	3
> 20.0 mm	0	Min > 20.0 °C	0	> 95% max poss.	0	Total Events	6

Misc.

Mean rainfall for days with >0.3mm: 3.3 mm
Total snowfall: 0.0 mm

Graphs and Charts

Mean Temperature

Variable

Measure

View more charts for this month

Intraday conditions

Per-minute readings across the month (downsampled for display). Choose a variable below.

Wind rose

Daily breakdown

Day numbers link to the detailed daily report. Wide tables can be scrolled horizontally.

Temperature, rain, sunshine & wind

Day	Tmin	Tmax	Tmean	Rain	Hr max	10m rain	Rate	Sun	Wmean	Wmax	Gust	Wdir	W10m
1	15.8	28.8	21.2	0.0	-	-	-	10	4.3	-	19.0	-	-
2	15.0	29.5	21.7	0.0	-	-	-	12	5.2	-	22.0	-	-
3	18.6	25.2	20.6	0.0	-	-	-	4	4.1	-	21.0	-	-
4	14.6	25.5	19.8	0.0	-	-	-	7	6.3	-	25.0	-	-
5	15.8	24.9	19.0	0.1	-	-	-	7	8.4	-	31.0	-	-
6	14.0	20.4	16.3	4.9	3.3	2.8	49	4	5.6	-	26.0	-	-
7	13.8	18.0	15.2	7.1	2.7	1.7	33	3	4.0	-	19.0	-	-
8	12.1	18.0	14.8	1.9	1.1	1.1	16	3	5.3	-	20.0	-	-
9	10.9	18.0	14.7	0.0	-	-	-	6	5.9	-	23.0	-	-
10	10.4	20.7	15.7	0.0	-	-	-	9	5.6	-	20.0	-	-
11	14.4	20.2	16.3	4.4	1.6	0.8	4.1	0.3	7.2	-	24.0	-	-
12	14.2	23.6	17.8	2.5	1.1	0.6	2.7	6	5.9	-	25.0	-	-
13	14.0	21.5	17.3	0.1	-	-	-	4	6.3	-	26.0	-	-
14	13.6	23.0	17.5	0.8	0.8	0.6	2.3	4	7.5	-	27.0	-	-
15	13.8	20.8	16.9	1.4	0.3	0.3	-	3	4.1	-	17.0	-	4.8
16	12.9	24.1	17.6	10.2	5.5	2.8	33	6	5.0	-	25.0	-	2.8
17	13.9	18.4	15.6	2.5	1.4	0.8	4.1	2	8.5	-	26.0	-	4.7
18	13.3	21.2	16.1	0.1	-	-	-	7	8.5	-	31.0	-	4.2
19	12.7	19.7	15.6	1.4	1.4	0.8	16	4	6.1	-	22.0	-	5.8
20	11.9	19.7	16.1	0.0	-	-	-	7	5.6	-	22.0	-	3.7
21	14.3	21.2	16.8	2.5	1.4	0.5	3.3	0.4	8.1	-	29.0	-	3.4
22	14.4	20.8	17.5	0.0	-	-	-	4	5.8	-	27.0	-	5.2
23	13.6	21.6	16.4	3.5	2.2	1.4	16	6	6.6	-	26.0	-	4.0
24	13.1	18.5	15.2	3.0	1.9	0.8	6	6	5.3	-	22.0	-	4.3
25	12.1	24.0	17.5	0.0	-	-	-	9	6.1	-	25.0	-	3.5
26	13.4	20.6	16.4	0.5	0.3	0.3	0.3	3	6.1	-	24.0	-	4.2
27	12.4	21.0	16.2	4.4	1.4	0.7	1.8	4	6.7	-	26.0	-	3.9
28	11.8	21.3	16.4	0.0	-	-	-	6	6.6	-	26.0	-	5.2
29	13.9	20.1	16.5	3.0	1.9	1.1	16	2	7.6	-	36.0	-	5.0
30	11.6	19.3	15.3	1.1	1.1	0.9	16	9	3.9	-	19.0	-	4.6
31	11.7	22.9	16.7	0.0	-	-	-	7	4.2	-	19.0	-	3.7

Humidity, dew point & pressure

Day	Hmin	Hmax	Hmean	Dmin	Dmax	Dmean	Pmin	Pmax	Pmean
1	42	86	66	12.2	17.1	14.3	1021	1024	1022
2	44	90	70	12.1	18.8	15.5	1015	1022	1018
3	38	89	69	8.3	17.6	14.4	1011	1015	1013
4	44	82	61	9.2	15.7	11.7	1012	1014	1013
5	42	83	64	7.7	14.8	11.7	1007	1012	1010
6	53	88	77	9.9	14.6	12.1	1003	1008	1006
7	75	93	88	11.9	15.5	13.3	1002	1008	1005
8	66	93	82	10.0	13.7	11.7	1008	1015	1012
9	47	79	62	5.9	10.9	7.3	1015	1016	1016
10	44	80	61	6.2	11.1	7.9	1015	1017	1016
11	73	95	86	10.7	16.5	13.9	1010	1015	1012
12	46	97	76	10.2	15.3	13.0	1006	1010	1008
13	51	87	70	9.2	14.1	11.5	1007	1010	1008
14	44	91	71	8.2	15.2	11.9	1008	1009	1008
15	62	92	80	11.9	15.2	13.4	1008	1019	1014
16	46	95	74	9.0	14.5	12.4	1009	1021	1015
17	71	96	88	11.7	15.3	13.5	1003	1008	1006
18	44	86	69	7.7	11.7	10.1	1008	1011	1010
19	56	90	77	9.7	12.7	11.4	1009	1012	1010
20	51	93	72	7.5	13.0	10.5	1012	1016	1014
21	65	95	83	10.1	17.7	13.8	1003	1014	1008
22	53	92	74	10.4	14.1	12.7	1001	1004	1002
23	58	93	80	11.5	15.0	12.8	1001	1008	1004
24	70	94	84	10.8	15.2	12.6	1008	1016	1012
25	43	95	72	9.8	14.0	11.8	1016	1023	1020
26	57	92	78	10.8	14.8	12.4	1013	1023	1018
27	49	95	78	7.4	15.0	12.0	1010	1016	1013
28	51	91	69	8.6	12.6	10.5	1016	1019	1018
29	60	90	76	10.2	14.4	12.2	1009	1016	1012
30	47	95	73	6.5	12.9	10.0	1011	1023	1017
31	41	80	60	7.3	10.7	8.5	1015	1023	1019

Other measures

Day	Night	Daymax	T+10m	T+1h	H+1h	T-10m	T-1h	H-1h	Fmin	Fmax	Fmean	AQmin	AQmax	AQmean
1	15.8	28.8	1.0	4.4	7	0.6	2.5	12	-	-	-	-	-	-
2	15.0	29.5	0.9	3.4	9	0.7	1.9	11	-	-	-	-	-	-
3	18.6	25.2	0.8	2.4	5	0.5	1.3	12	-	-	-	-	-	-
4	14.6	25.5	1.0	2.9	16	0.8	1.6	16	-	-	-	-	-	-
5	15.8	24.9	-	-	-	-	-	-	-	-	-	-	-	-
6	14.0	20.4	0.8	1.7	13	1.2	2.1	12	-	-	-	-	-	-
7	13.8	18.0	-	-	-	-	-	-	-	-	-	-	-	-
8	12.1	18.0	1.3	1.9	10	0.7	2.0	11	-	-	-	-	-	-
9	10.9	18.0	0.6	2.1	6	0.8	1.4	13	-	-	-	-	-	-
10	10.4	20.7	-	-	-	-	-	-	-	-	-	-	-	-
11	14.4	20.2	0.7	1.3	8	0.9	1.2	5	-	-	-	-	-	-
12	14.2	23.6	-	-	-	-	-	-	-	-	-	-	-	-
13	14.0	21.5	-	-	-	-	-	-	-	-	-	-	-	-
14	13.6	23.0	-	-	-	-	-	-	-	-	-	-	-	-
15	13.8	20.8	1.7	2.3	15	1.6	2.6	13	-	-	-	-	-	-
16	12.9	24.1	0.8	2.4	22	0.8	3.4	11	-	-	-	-	-	-
17	14.7	18.4	1.6	2.1	9	1.1	1.6	9	-	-	-	-	-	-
18	13.3	21.2	1.2	2.0	19	1.8	3.1	14	-	-	-	-	-	-
19	12.7	19.7	0.6	2.2	12	0.6	1.5	9	-	-	-	-	-	-
20	11.9	19.7	0.4	1.9	6	0.6	1.3	12	-	-	-	-	-	-
21	14.3	21.2	0.5	1.9	11	0.6	1.5	7	-	-	-	-	-	-
22	14.4	20.8	0.5	1.5	5	0.5	1.2	8	-	-	-	-	-	-
23	13.9	21.6	0.9	2.5	15	1.4	2.7	11	-	-	-	-	-	-
24	13.1	18.5	0.9	3.4	11	0.9	3.2	17	-	-	-	-	-	-
25	12.1	24.0	0.6	2.5	10	0.7	1.9	11	-	-	-	-	-	-
26	13.4	20.6	0.4	1.6	9	0.7	1.5	10	-	-	-	-	-	-
27	12.4	21.0	0.7	3.0	7	0.9	1.8	14	-	-	-	-	-	-
28	11.8	21.3	1.1	2.6	6	0.4	1.5	10	-	-	-	-	-	-
29	14.6	20.1	0.7	1.6	15	0.6	1.9	11	-	-	-	-	-	-
30	11.6	19.3	-	-	-	-	-	-	-	-	-	-	-	-
31	11.7	22.9	0.8	2.1	5	0.7	1.5	9	-	-	-	-	-	-

View daily report for the 1st