We took all precautions during the same still it occurs. Does weather effect matter ? If it then how can determine
Yes the weather condition in terms of temperatures and windy condition do affect it.
How cracking happens.
when a water from the surface of plaster starts evaporating due to high temperatures at surface and windy conditions, it leads to cracking.
The wind cause the hot air circulation at the surface and the constant evaporation of water from plaster due to high temperatures.
To prevent this, we can avoid doing plaster in high temperatures.
Another cause is, if you are using admixture to modify the properties of plaster (like crystalline water proofing), ensure the plaster does not take longer to set.
All those crazing and shrinkage occurs when mortar is not set, once the mortar hardens, it does not observed any more after that.
So basically it happens when mortar is fresh and not set.
You can apply your own theories on how to prevent crazing by observing the plastering activity and finding the causes if there are any other than listed here.