Thanks Martin and Tyler

What about t-storms, did you get much of those during that period?
T-storms are usual during Jun-Aug and probable during Apr-May & Sep. However there can be some exceptions. How many? Let me place here some statistics:
(the number of days, not single t-storms!)2006: 18
2007: 27
2008: 17 (Mar-1, Apr-1, May-5, Jun-3, Jul-4, Aug-2, Sep-0, Oct-1)
The last t-storm of Oct.06 was a surprise for me because it was already mid-autumn (t-storms less probable) and no t-storms for 40 days before that.
I tried to do that, and it lasted about 2 days .lol
Tyler, I had many unsucessfull attempts before 2006.......with a few days, week, even month but no more

But then I decided to do
minimum observations but
constantly, and it is the most important and hard part - to have
no single day of unrecorded weather. It worth to try doing it - it is hard to start but it brings awesome results in a few years.
I do that in the simple way: just a few temperature measurments (usually 8AM, 4PM, min, max), av. daily cloudiness estimate, type & amount of precipitation - that's all. Maybe I'll improve my observations soon with adding there RH, pressure and more precise temperature.