There are no standard way of writing in Cantonese.  So it is better to provide an English version to help you better.  Here's a great Cantonese website.  Usually within a day, your question will be answered by experts.  http://www.cantonese.sheik.co.uk/dictionary/

廣東話/粵語 - Snow and Where I Want To Go Next

好耐冇見,

今日落雪，差唔多有5英寸。今日真係都好凍啦啊！温度都超唔過多-2攝氏，但係-5攝氏凍得滞啦！[Don't understand this.  I'm guessing, it translates to "If it's -5C, I'll be shitting cold = 如果落到 -5C, 真係变成攋屎凍]波士頓嘅冬天通常好凍，不過但係雪景好靚。聽日我希望天氣好暖啲，但係本月唔/非[a bit more poetic elegance]係三月。三月雪通常在溶化。

我唔鍾意凍嘅天氣，所以我想搭飛機去暖嘅地方。譬如，香港，泰國，新加波，或定係澳洲。香港冇落雪，又而天氣唔係好凍。我而家想去悉尼，因爲是應而家天氣好熱。我鍾意游水，所以我想去沙灘。悉尼有好多沙灘，華人，有好好嘢食嘢，亦有同埋靚妹女。澳洲人嘅英文口音好聽，但係口音好難識聽得懂。我未曾去過澳洲，但係今年我好希望得去。

我想去澳洲，但係飛機票好非常[之]貴，又唔想洗太多而我希望可以慳錢。係咁先，下次見，拜拜！

Go Bangkok!  It is warm still without humidity.  You live like a king unless you want American style luxurious hotels.  Street food is great and it's you can get easily around the district without having to learn Thai.

廣東話/粵語 - Snow and Where I Want To Go Next

好耐冇見,

今日落雪，落左差唔多5英寸。今日都仲系好凍啦啊！（温度）得返差唔多攝氏-2度攝氏／（得﹣2度到），但係-5攝氏凍得滞啦！(?? Don't get this part.)波士頓嘅冬天通常好凍，但係D雪好靚。聽日，我希望天氣會好暖啲，／（我）希望聽日（嘅）天氣會好／暖D，但係應該無咩可能，因為本月("本月" sounds too formal for this entry. If you wanna write "this month" in Cantonese, try "今個月".)唔係仲未到三月。三月D雪通常會溶化／通常（到）三月D雪（就）會溶（Again, write "溶", omit the "化" to make it sound more casual.）。 

我唔鍾意凍嘅天氣，所以我想搭飛機去暖嘅地方。譬如，：香港，、泰國，、新加波，、定係同澳洲。因為香港冇落雪落，而（所以）天氣唔係算好凍。我而家想去悉尼，因爲而家戈（＝果）到天氣好熱。我鍾意游水，所以我想去沙灘。悉尼有好多沙灘，、／（同）華人，、好好多／（好多好）食嘢食，同埋靚女。澳洲人嘅D英文幾好聽，但係佢地嘅口音好難識聽／但好難聽得明。我仲未去過澳洲，但（係）今年我希望可以去到。 

我想去澳洲，但（係）飛機票好貴，而我希望／想可以慳錢。係咁先，下次見，拜拜！

廣東話/粵語 - Snow and Where I Want To Go Next

好耐冇見,

今日落雪，(積雪)差唔多5英寸。今日真系好凍啊！温度只有-2攝氏，但係-5攝氏凍得滞啦！（No idea what this means, but i think u only need to say the previous one）波士頓嘅冬天通常好凍，但係雪好靚。聽日我希望天氣好暖啲，但係(可惜)本（or 今個。 本is a bit formal :)）月唔係三月。(因為在)三月，雪通常（都會）溶化。

我唔鍾意凍嘅天氣，所以我想搭飛機去暖嘅地方。譬如，香港，泰國，新加波或者澳洲。（不過）香港冇落雪，而天氣亦唔係好凍。（其實 or 不過 or some other words like these）我而家想去悉尼，因爲而家(那裡/果度)天氣好熱（i think 天氣很暖 is better but 好熱 is fine）。我鍾意游水，所以我想去沙灘。悉尼有好多沙灘，也有好多好食嘢，同埋靚女（I would say: 悉尼除左有好多好靚的沙灘，美味的食物，還有非常多的華人，包括靚女）澳洲人嘅英文（其實幾）好聽，但係口音好難識聽（聽得明）。我未去（過）澳洲，但係今年我希望去。

我想去澳洲，但係飛機票好貴，而我希望可以慳錢。係咁先，下次見，拜拜！

廣東話/粵語 - Snow and Where I Want To Go Next

好耐冇見,

今日落雪，差唔多5英寸厚。今日都好凍啊，温度差唔多-2攝氏，如果係-5攝氏凍得滞啦！波士頓嘅冬天通常都好凍，但係雪好靚。我希望聽日噶天氣會好暖。三月雪通常會溶化，依家中未到呢，雪融化中凍啊！（最後呢句唔係好理解你想表達d咩？）

我唔鍾意凍嘅天氣，所以我想搭飛機去暖嘅地方。譬如香港，泰國，新加波或者澳洲。香港唔會落雪，同埋天氣唔係好凍。我而家想去悉尼，因爲而家天氣好熱。我鍾意游水，所以我想去沙灘。悉尼有好多沙灘，華人，好多好食噶嘢同埋靚女。澳洲人嘅（英文）口音好好聽，但係好難聽得明。我未去過澳洲，但係今年我希望我可以去。 飛機票都好貴，希望我可以慳到錢。係咁先，下次見，拜拜！