Sunday, 20 April 2014

Change in seasons more evident in the past week

Temperatures in both Jyväskylä and Sydney during this week have indicated a more obvious change in respective seasons.

Some key figures from the past week include:

Jyväskylä

  • Today is the warmest day of the year so far, pushing above 14C. It is also the highest temperature since September 20 last year (15.7C).
  • The overall average (average of minimums and maximums) since April 14 is 5.1C. The previous weekly period with a higher average was between October 27 and November 2 last year (5.4C). 
  • The past 4 days have been above 10C, also the first such period since early October.

Sydney Airport

  • Saw its lowest temperature of the year so far this morning with 12.3C. It is also the lowest temperature since November 6 (11.9C).
  • The overall average since April 14 is 17.8C. The previously weekly period with a lower average was between September 11 and 18 last year (17.7C).
  • The past week has seen only 1 day above 25C. November 25 to December 1 was the last weekly period with only 1 day above that mark.

One other thing is that today is the first day of the year where the temperatures of each city have crossed over. By this I mean that the minimum at Sydney Airport, which was 12.3C, has been beaten by Jyväskylä's maximum of 13C+. While this year is the earliest date for that to occur in the past 6 years, it is somewhat remarkable that the dates for all 6 years are contained within a 7 day period. The respective dates are below.

  • 2009 - April 24 
  • 2010 - April 26 
  • 2011 - April 23
  • 2012 - April 27
  • 2013 - April 21
  • 2014 - April 20

The next few days should see fairly similar temperatures for both cities as spring and autumn settle in.

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