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.
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Weather
Statistics 2013 - Armidale NSW
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