Annual Weather Review
Armidale NSW - 2013

Compiled and written by Peter Burr, using data recorded at the Bureau of Meteorology weather station at East Armidale. No part of this review may be reproduced for commercial purposes without prior permission from the author.


2013 was a dry year with warmer than normal temperatures, particularly in the second half of the year.

RAINFALL: The total of 636.4 millimetres was 151 mm less than the LTA. The year started off with good rains in January and February, but dry conditions prevailed from March through to October. November had well above average rain, but December was the driest for 72 years. The wettest month was January with 162.0 mm, and the driest was April with 6.6 mm. The highest daily fall was 50.8 mm on 30th November.

TEMPERATURES
: Temperatures were warmer than the LTA in January and from July to December with January being the hottest month. September was the warmest on record for the first month of spring. The hottest day of the year was 23th January at 34.9 degrees, the coldest day was 25th June with a maximum of 7.4 degrees, and the coldest overnight temperature was -7.0 degrees on 16th August. Notable temperature extremes were:
18th July - the maximum of 19.9 degrees was the warmest for July since 24th July 1990 and was the second warmest on record for the month.
26th September - the maximum of 28.7 degrees was the highest September temperature on record from 105 years of records. The previous highest was 28.2 degrees on 29/9/2000 & on 25/9/2002.

WINDS: Winds were light in April, May, June and July, and light to moderate in all other months. The year totaled 20 windy days* (annual average 19 days).
Wind direction at 3pm: west: 142 days, east: 96 days, south-west: 51 days, south-east: 35 days, south: 14 days, north-west: 13 days, north-east: 11 days, north: 2 days, calm: 1 day.

EVAPORATION:
Total for the year was 1235.4 millimetres which was 47 mm higher than the LTA. Average daily evaporation for the year was 3.4 mm.

FROSTS:
Total frosts for the year was 117 which was 19 more than the LTA. August was the frostiest month recording 26 frosts. There were 52 light frosts, 54 moderate frosts and 11 severe frosts**. The first frost was on 19th April which produced a frost-free period of 175 days over the summer of 2011-12. The last frost was a late one on 7th December.

FOGS: There were fogs on 31 days which is close to the annual average. The foggiest months were June and July with fogs on 6 days and 7 days respectively. There was one evening fog with the remainder in the early mornings.

SNOW: There were no snowfalls in 2013. The annual average is 2.2 days of snow. The last settling snowfall in Armidale was on 9th July 2008.

THUNDERSTORMS: Thunderstorm activity was highest in January, February, October and November. In November there were storms on 10 days which is unusually high, while in December, which usually has the highest storm activity, there were storms on only one day.

HAIL: Hail fell on 3 days - 18th October (small hailstones - 5 mm diameter), 29th October (hailstones up to 10 mm diameter), 10th November (2 falls - up to 17 mm diameter and 10 mm diameter). The annual average is 3.3 hail days.

FLOODS:
Minor flooding occurred in Dumaresq Creek on the 28th January, 1st & 2nd March, and 29th November. Minor brief flash flooding from thunderstorms occurred on 19th & 23rd January. Other brief flash flooding events may have occurred on other dates not noted here.


LTA - Long Term Average     * Windy day - average wind speed higher than 20 kms per hour: 9am to 6pm
** Intensity of frosts: light - minimum temp > 0.0C, moderate - minimum temp -3.9C to -0.1C, severe - minimum temperature <-3.9C.      

 




Weather Statistics 2013 - Armidale NSW

 

JAN

FEB

MAR

APR

MAY

JUN

JUL

AUG

SEP

OCT

NOV

DEC

YEAR

 

RAINFALL mm

162.0

89.6

55.4

6.6

19.2

79.8

18.6

10.8

23.8

31.0

117.6

22.0

636.4

Long Term Average mm

101.5

88.9

65.2

45.6

43.2

55.1

48.4

47.7

51.4

68.1

83.6

89.0

787.7

 

RAIN DAYS

10

14

11

4

6

11

7

3

4

6

11

6

93

Long Term Average days

10

10

10

8

8

10

9

9

8

9

9

10

110

 

HIGHEST DAILY RAINFALL mm

47.8

13.0

26.0

3.2

8.4

18.2

9.4

10.4

17.6

13.0

50.8

7.4

50.8

Day

20

30

2

8

23

11

20

18

17

30

30

26

 

AVERAGE DAILY MAX TEMP deg C

27.9

23.1

22.8

20.7

16.5

13.2

14.6

16.1

21.7

23.3

24.0

26.7

20.9

Long Term Average deg C

26.3

25.4

23.4

20.0

16.2

13.1

12.4

14.1

17.6

20.5

22.7

24.9

19.7

 

AVERAGE DAILY MIN TEMP deg C

14.8

12.1

11.0

4.6

1.5

2.1

0.5

-0.4

2.7

4.9

7.5

10.3

6.0

Long Term Average deg C

12.6

12.6

10.2

6.4

3.0

0.7

-0.3

-0.2

2.5

5.5

8.9

11.1

6.1

 

AVERAGE GRASS MIN TEMP deg C

11.6

8.6

7.6

0.0

-3.2

-2.0

-4.0

-5.9

-3.1

-0.8

3.1

5.9

1.5

Long Term Average deg C

9.8

10.1

7.3

3.2

-1.4

-2.9

-4.0

-4.0

-0.9

2.3

6.2

8.3

2.8

 

HIGHEST MAXIMUM TEMP deg C

34.9

27.9

26.6

24.4

22.5

18.3

19.9

21.5

28.7

29.5

29.4

34.4

34.9

Day

13

10

24

29

1

12

18

30

26

22

8

29

 

LOWEST MAXIMUM TEMP deg C

19.4

17.0

17.1

15.1

9.1

7.4

9.6

8.5

14.5

13.0

17.6

17.4

7.4

Day

27

22

2

20

22

25

23

8

16

18

23

6

 

HIGHEST MINIMUM TEMP deg C

20.0

15.2

17.4

11.4

8.1

9.1

7.9

6.2

9.0

14.6

13.6

16.4

20.0

Day

19

1

1

4

24

2

20

1

16

11

23

10,24

 

LOWEST MINIMUM TEMP deg C

9.4

5.2

5.0

-2.2

-5.0

-4.6

-6.8

-7.0

-3.0

-3.0

0.8

0.4

-7.0

Day

8

3

18

20

27

4

27

16

27

4

5

7

 

LOWEST GRASS MIN TEMP deg C

2.8

2.0

0.9

-7.2

-11.0

-10.0

-10.8

-12.4

-9.7

-8.5

-5.1

-3.2

-12.4

Day

8

3

18

20

20

19

8

16

27

4

5

7

 

FROSTS

0

0

0

10

19

14

20

26

16

10

1

1

117

Long Term Average days

0

0

1

5

13

17

19

20

15

7

1

0

98

 

FOGS days

0

1

3

5

4

6

7

0

2

1

0

2

31

Long Term Average days

1

1

3

5

5

4

3

2

2

2

1

1

32

 

THUNDERSTORMS days

5

5

0

2

0

1

0

0

1

5

10

1

30

Long Term Average days

7

5

3

1

1

0

0

1

2

4

6

8

37

 

EVAPORATION (Class A Pan) mm

171.0

105.8

98.4

73.2

51.6

28.6

37.8

74.6

117.4

161.8

146.4

168.8

1235.4

Long Term Average mm

161.3

126.1

114.4

76.4

50.7

37.1

42.1

65.4

95.8

126.4

133.9

159.0

1188.6

 

AVGE. DAILY EVAPORATION mm

5.5

3.8

3.2

2.4

1.7

1.0

1.2

2.4

3.9

5.2

4.9

5.4

3.4

 

AVERAGE DAILY WIND RUN km

154.3

133.1

122.4

80.9

87.3

94.5

84.7

139.2

135.2

145.2

113.3

130.1

118.4

Long Term Average km

155.8

148.8

143.9

128.9

126.6

149.7

156.1

169.1

175.3

161.4

156.3

157.7

152.5

 

PREVAILING 3PM WIND DIRECTION

E

E

E

E

E

W

W

W

W

W

W

W

-

 

FINE SUNNY DAYS ^

15

6

9

16

18

6

11

23

25

21

14

17

181

Long Term Average days

16

13

17

16

15

14

15

18

19

18

14

15

190

 

MAXIMUM TEMP > 29.9 deg. days

10

0

0

0

0

0

0

0

0

0

0

5

15

MAXIMUM TEMP < 10.0 deg. days

0

0

0

0

1

2

1

1

0

0

0

0

5

MINIMUM TEMP < 5.0 deg. days

0

0

0

14

26

20

25

30

20

16

11

2

164

 

 

 

 

 

 

 

 

 

 

 

 

 

 

^ Fine Sunny Day - a dry sunny day generally free from excessive cloud

Compiled by Peter Burr, Jan 2014

 

 

 

 

 

 

 

 


       
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