Mid-month progress of April 2015 averages

April 2015 has seen a warm first half of the month in Jyväskylä. The 16 days so far don't give averages quite as high as the respective numbers from 2010, but they do sit in second and third place for the average minimum and maximum out of the years since 2009.

One thing that is clear for Jyväskylä is the lack of cold minimums. So far there has been only one minimum below -5C, and it's very possible that there won't be any more. 2010 hadn't seen any minimums below -5C by the 16th and 2011 had seen one also. On the other hand, 2013 saw 13 of the first 16 days go below the mark.

A new part of my progressive graphs show predicted values for the coming days. Current forecasts show the average minimum holding steady just below zero, possibly ending up in a similar position as the averages from 2010 and 2011.

Progressive average minimum for April at Jyväskylä Airport for the period 2009-2015

Daily maximums at the start of April in the years since 2009 have varied quite a bit as well. 2010 saw a very warm beginning with April 1 and 2 topping 10C. 2012 saw maximums remain below zero until the 4th.

2015 sat among the remaining years for the first few days, but it quickly climbed towards 2010's figures thanks to April 11 and 12 topping 10C; the latter reaching a remarkable 14.9C. Cooler temperatures this week have stabilised the average, and forecasts predict it to stay at a similar level, increasing only slightly in the next 10 days.

Progressive average maximum for April at Jyväskylä Airport for the period 2009-2015

Sydney has seen an interesting start to April. The average minimum sits well above the long term figure, but it is somewhat average when compared to the previous six years. The daily figures haven't been especially high. Only two minimums so far topped 18C, compared to six in 2009 at the same date, and five in 2014. However, the lowest temperature seen after 17 days is 14.5C. All other years had seen a minimum lower than this by April 17.

The forecast shows some warm minimums in the coming couple of days, but they will drop next week. The overall average for the month is likely to sit somewhere close to the majority of figures from recent years.

Progressive average minimum for April at Sydney Airport for the period 2009-2015 plus the long term average

Tops of 29.3C and 31.0C, the latter of which, at the time, was the highest April temperature at Sydney Airport since 2006, got the month off to a warm start, but maximums dropped quickly after. There was a run of 12 straight days below 25C. April 15 and 16 followed with warm temperatures once again. The 16th's 32.6C maximum replaced the 2nd as the warmest since 2006.

The average dipped to the lowest respective figure on April 13, but the 32.6C maximum quickly pushed it back above the long term progressive average. The coming week will see a drop in the average, but that's only normal for this time of the year.

Progressive average maximum for April at Sydney Airport for the period 2009-2015 plus the long term average