Need more space, please...

[Art]

Got any RAM left?

Tc=2
Nc=6
PosX=11
PosY=3 
Gosub Lcd_GotoXY : Gosub Lcd_SentString

Tc=3
Nc=6
PosX=11
PosY=4
Gosub Lcd_GotoXY : Gosub Lcd_SentString

->

bla var byte : blabla var byte
bla = 2 : blabla = 3

'************************

gosub loop
bla = bla + 1
blabla = blabla + 1
gosub loop

'************************

loop:
Tc=bla
Nc=6
PosX=11
PosY=blabla
Gosub Lcd_GotoXY : Gosub Lcd_SentString
return

plenty of potential for stuff like that,
& you did this exact same thing twice:

LcdStr(5) = 59                            ' simbol for degree
LcdStr(4) = 48 + Temperature2 dig 1
LcdStr(3) = "."
LcdStr(2) = 48 + Temperature2 dig 2
if Temperature2 dig 3=0 then
LcdStr(1) = 32
else
LcdStr(1) = 48 + Temperature2 dig 3
endif

but looks like you fit it in anyways