Monday, 1 July 2013

June Weather report

The biggest challenge this month has been gathering the data, so the material below is a bit patchier and more dubious than normal.

My previous weather station appeared to be very good value as it was cheap, but had all the functionality I required, and didn't need up to a dozen batteries to keep it chugging along.  However a few months after I got it the rain gauge ceased gauging the rain so I got a replacement.  Bit by bit the anemometer, wind vane  and thermometer all packed in.  So that has been returned and a Davis Vantage Vue system (with WeatherLink) has been acquired at a somewhat greater cost.

I got the new system through Instrument Choice who advertise a 3 hr response time to queries.  Thus far they have certainly stuck to - in fact beaten the daylights out of - that metric.  It also appears (after a week of use) that the system is rather effective.  I expect it to come to "getting what you pay for".

A result of this was finding that there was a period in the middle of June when neither system was in place.  So I have plugged that gap with some information from the Bureau of Meteorology for Tuggeranong.  I don't think it will unduly mess thing up.

To business.  At this time of year temperature, and especially minimum temperature are a point of interest.
There is also an impact of the temperature range.  Thus, IMHO, a day that starts at -2 but includes a maximum of +15 is much more enjoyable than a day that only drops to +5.6 but then has trouble getting over +9!

During the month we experienced 13 days with a minimum below 0 and a further 4 with the minimum between +2 and 0.  On 7 days the minimum was >+5.  We failed to get into double figures on 3 days with a minimax of +9.3.

Rain was recorded on 9 days, totalling to 86mm (cf the 428mm Denis has recorded at Robertson).  This is the first month since january which we have been over the values for 6-year average and last year.
The BoM takes its afternoon readings at 3pm so for this month I have followed that approach.  
This chart also includes the rainfall recorded.  The basic pattern is for humidity to be very high on the day the rain starts but then drop off on the next day: that seems intuitively correct.

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