يوم جميل

كان الجو ممطرا اليوم و كان عندي زكام قليلا.

(I don't know if you know the rule of using "kaana" and her sisters. It's a bit advanced)

تبعد رالي عن البيت ساعتين.

"Rally is two hours from home" or you can say

تبعد رالي عن بيتي ساعتين.

"Rally is two hours from my home"

عندما عدت الى بيتي زوجتي طبخت عشاءً لذيذا :)

the object ("maf'ool bihi") should be "mansoob" and hence its adjective also (لذيذا) should be  "منصوب"

كان اليوم جميلا جدا :)

Same as first sentence :) Rule for using "كان"

Your level is really advanced :)

So I assume you know the rules for using "كان" and the basic rules of "إعراب"

Otherwise, the mistakes are all insignificant and it's very well understood

Very Good level !

but if you made the word order of :

زوجتي طبخت عشاء لذيذ

in this form

طبخت زوجتي عشاء لذيذ

Becuase we Arabs use the words order to show emphases

Consider the following example and you will get the point:

Who is reading?

my wife is reading.

what she is doing?

reading ! , she is reading.

In Arabic we usually put the verb(action) before the doer of it , to show that type of emphases in action.

As for your sentence

زوجتي طبخت عشاء لذيذ

it looks like an answer to the quetion

من طبخ لك العشاء؟

But the real question was :

ماذا حصل بعد ان عدتَ الى البيت؟

the suitable answer is

طبخت زوجتي عشاءاً لذيذاً

.

يوم جميل

 كان الجو ممطرا اليوم و كنت مصاب بالزكام . قليلا 
كان يجب أن اذهب الى مدينة رالي لعملي.
تبعد رالي عن بيت ساعتين.
عندما عدت الى البيت .زوجتي طبخت عشاء لذيذ :)
كان اليوم جميل جدا :)