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1 August 2006

MONTHLY CLIMATE SUMMARY - NSW REGIONAL OFFICE

Return to warmer than average temperatures

July 2006 Main points:

  • Warmer than average temperatures, especially in the south-east
  • Close to average rainfall across most of the state, with parts of the north-west receiving very much above average falls

July 2006

Temperatures:

After a colder than average June much of NSW experienced a warmer than average July. Maximum temperatures were above average across most of the eastern half of the state with the Southwest Slopes, Central Tablelands and Riverina experiencing very much above average maximum temperatures. The statewide average maximum temperature for July was 0.59 degrees above the historic average1 of 15.3°C (See Map 1). Minimum temperatures were above average across much of the state during July. The Southern Tablelands and South Coast were the only areas of the state to record very much above average minimum temperatures during July (See Map 2). The statewide minimum temperature was 0.8 degrees above the historic average of 3.5°C.

Rainfall: (See Map 3)

July, like June, delivered close to average rainfall across much of eastern NSW. North western NSW and some coastal areas recorded above average falls during the month with areas of the Upper Western receiving very much above average falls. The only area of the state to recieve below to very much below average rainfall during July was the southern half of the Southwest Slopes. The statewide average rainfall for the month was 45.7mm compared to the historical average of 38.6mm.

  

Extremes

Table 1: Weather extremes during July 2006

Highest temperature
Hottest day		 26.1°C Casino on the 30th
Highest mean daily maximum temperature
Warmest days on average		 21.6°C Murwillumbah (Bray Park)
Lowest mean daily maximum temperature
Coolest days on average		 0.5°C Thredbo AWS
Lowest daily maximum temperature
Coldest day		 -2.5°C Thredbo AWS on the 20th
Lowest temperature
Coldest night		 -12.3°C Glen Innes AP on the 10th
Lowest mean daily minimum temperature
Coldest nights on average		 -4.5°C Thredbo AWS
Highest mean daily minimum temperature
Mildest nights on average		 12.4°C Byron Bay
Highest daily minimum
Warmest night		 16.1°C Byron Bay on the 16th
Highest total rainfall
Wettest overall		 233.8mm Rose Bay (Royal Sydney Golf Club)
Highest daily rainfall
Wettest day		 85.2mm Rose Bay (Royal Sydney Golf Club)

Records for July 2006

Table 2: Record Lowest Total Rainfall for July

Total rainfall
for July 2006 (mm) 		Previous lowest
for July 		Years of
record
Yarrangobilly Caves
16.9
27.5
in 1982
40
Kingstown Post Office
0.4
0.8
in 2002
26

 

Table 3: Record Highest Mean Maximum Temperature for July

Mean daily maximum
temperature
for July 2006 (°C) 		Previous highest
for July 		Years of
record
Hume Reservoir
13.8
= 13.8
in 2001
75

 

Table 4: Record Highest Mean Daily Minimum Temperature for July

Mean daily minimum
temperature
for July 2006 (°C) 		Previous highest
for July 		Years of
record
Charlotte Pass
-4.3
= -4.3
in 1973
37

 

Table 5: Record Lowest Temperature for July

Lowest temperature
in July 2006 (°C) 		Previous lowest
for July 		Years of
record
Tenterfield
-10.6
on 10th
-10.0
on 13th in 2002
91
Tidbinbilla Nature Reserve
-9.0
on 7th
-7.0
on 14th in 1985
21

 

Summaries

 

Summary statistics for July 2006

Maximum temperatures
for July
(°C)		 Minimum temperatures
for July
(°C)		 Rainfall
for July
(mm)
Mean for 2006 Difference from normal Highest for 2006 Mean for 2006 Difference from normal Lowest for 2006 Total for 2006 Normal total
Albury 
13.9
+0.9
16.8
3.4
+0.3
-2.8
55
-
Armidale 
12.4
+0.1
16.6
1.7
+0.6
-3.4
60
-
Batemans Bay
16.3
-0.9
20.1
4.7
+0.8
-0.9
87
33
Bathurst 
12.9
+1.8
16.8
1.0
+0.5
-7.0
62
49
Bega 
16.0
-0.1
21.6
3.8
+1.4
-1.4
76
-
Bourke
17.8
-
24.3
5.3
-
-2.1
38
-
Bowral
11.8
+0.1
16.7
3.7
+2.0
-0.7
81
46
Broken Hill
14.3
-0.8
20.6
5.9
+0.6
2.5
37
19
Byron Bay
19.1
-0.3
22.6
12.3
+0.6
9.5
187
101
Canberra 
12.7
+1.4
15.5
1.8
+2.0
-5.8
35
42
Cobar 
15.6
-0.2
21.6
5.7
+0.7
0.5
38
29
Coffs Harbour 
19.5
+0.8
23.2
8.1
+0.5
1.2
70
75
Cooma 
11.1
-0.3
14.5
-1.6
+1.2
-8.5
27
30
Deniliquin
14.4
-
17.7
4.6
-
-0.4
36
-
Dubbo 
15.7
+0.3
20.8
3.5
+0.4
-3.2
39
-
Gosford
17.9
+0.4
23.0
5.6
+1.1
-0.4
104
79
Goulburn 
12.0
+0.4
15.5
1.7
+1.5
-6.3
40
-
Grafton 
21.2
+0.7
25.6
6.8
+0.6
-0.5
50
42
Griffith 
14.7
+0.3
17.2
4.5
+1.1
-2.0
42
36
Inverell 
16.4
+1.4
19.8
3.6
+0.1
-2.6
46
50
Katoomba
10.5
+1.3
14.7
3.3
+0.9
-1.1
102
85
Kempsey
20.5
+0.8
25.0
5.8
+0.1
0.0
63
68
Lismore
21.0
-
25.7
9.3
-
5.4
52
-
Maitland 
18.2
-
23.1
5.9
-
-2.0
65
-
Moree 
18.3
+0.3
22.9
4.7
+0.4
-2.4
56
44
Mudgee 
14.7
+0.3
19.2
0.9
-0.4
-6.6
68
-
Newcastle 
17.5
+0.8
20.8
10.2
+1.8
6.5
81
97
Nowra
16.2
-
21.3
7.7
-
1.1
81
-
Orange
10.3
+1.0
14.0
2.2
+0.8
-1.6
91
91
Parkes
15.4
+1.4
20.0
4.4
+0.4
-2.5
75
49
Penrith 
17.8
0
23.2
5.5
0
1.1
35
-
Port Macquarie 
18.9
+0.2
22.5
6.6
+0.2
-2.0
227
-
Richmond 
17.2
-0.3
23.1
3.1
-0.4
-3.3
31
-
Scone 
17.3
+1.0
22.9
5.5
+0.9
0.1
23
36
Sydney
17.9
+1.7
23.0
9.1
+1.1
5.8
140
98
Tamworth 
16.4
+0.2
21.0
2.3
0
-4.2
63
-
Taree 
19.0
-
24.0
6.6
-
-3.0
82
-
Wagga Wagga 
14.4
+1.8
17.3
3.2
+0.5
-5.1
45
56
Wollongong 
17.1
+0.1
23.4
8.2
-0.2
1.5
81
60

 

** Please note: the length of record for some of the stations listed in the above table is not long enough to produce valid temperature and/or rainfall averages

This statement has been prepared based on information available at 12 PM on 1 August 2006. Although every effort has been made to check them, it is possible that results may change as new information becomes available.

A note about deciles: Deciles are used to give an element (in this case rainfall or temperature) a ranking. Deciles are calculated by arranging the totals in ascending order (from lowest to highest) then splitting them into 10 equal groups (thus the groups are called deciles). The first group would be in decile range one, the second group in decile range two, etc up to the highest annual totals (highest 10 per cent) being in decile range 10.

1Averages: Averages are based on the period 1961 to 1990 which is a convention of the World Meteorological Organisation.

Further information: Contact Clinton Rakich 9296 1610, email: reqnsw@bom.gov.au

A directory of Bureau services is available on poll fax: 1800 630 100

The latest rainfall and temperature maps are available here
Climate averages for New South Wales localities are available here
Daily Weather Observations for selected New South Wales localities are available here

 


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