Wednesday, December 26, 2012

Fall 2012 Summary

A warm fall that had above average precipitation

Apart from a 2 week period in late October into early November where the temperature remained below average, the rest of season was mostly warmer than average.  Then a mild beginning of December caused the overall fall temperature to be 1.2 degrees warmer than average.  But this pales in comparison to last year when it was 2.5 above.

November was also the anomaly for precipitation, however a wet start and end to season just managed to get us out of the average range to make it a wet fall.  The 248.2 mm was more than the average of 222.5 mm and just a little above the top of the average range which is 238.2 mm.

Summary for Fall 2012:
Maximum Temperature 23.6 °C
Minimum Temperature -7.4 °C
Average Daily High Temperature 9.3 °C (Long term average 8.3 °C)
Average Daily Low Temperature 1.4 °C  (Long term average -0.5 °C)
Total Precipitation 248.2 mm (Long term average 220.9 mm)

(Long term averages based on 1971-2000 data for the Waterloo Wellington Airport)

Saturday, December 1, 2012

November 2012 Summary

A dry and colder (but still average) November

So that’s what a cold month feels like!  However, overall it was just 0.2 degrees below average, as this is within the average range, November was not classified as a colder than average month.  Thus it has still been 19 months since one of those, but it does break the streak of months when it was at least a bit warmer than average overall.

After two really wet months, November was really dry, in fact at 22.5 mm it was the 4th driest since records began in the region almost 100 years ago.  As far as snow, we only had 2 cm which is much less than the 14 cm of a typical November.

With this dry month we are at 701.2 mm for the year compared to the average of 832.9 mm, this means (spoiler alert) that 2011 will most likely end up as a drier than average year overall.  We would need around 150 mm for the month of December to get into the average range.  This amount of precipitation has never happened before in December in this area.

Summary for November 2012:
Maximum Temperature 16.5°C
Minimum Temperature -6.5°C
Average Daily High Temperature 5.9°C (Long term average 6.1°C)
Average Daily Low Temperature -1.5°C (Long term average -1.4°C)
Total Precipitation 22.5 mm (Long term average 82.3 mm)

(Long term averages based on 1971-2000 data for the Waterloo Wellington Airport)