今日は１日雨だからお散歩無理かなって英語でなんて言うの？

1.Unfortunately we can't go for our walk today because it is going to be raining today.
- unfortunately means that you are disappointed that you can't go for the walk because of the rain.

2.It is going to be raining today so no walk for you today.
- This is a fun way to talk to your dog.

If something is "Out" it means that it is not going to happen, is not on the itinerary, is off the timetable. This activity has been 'ruled out' which means deleted from the activity list.
"John has been ruled out of playing fottball tomorrow due to a leg injury.."
If you are 'on your own' it means nobody will help you with this activity.

"I'm sorry but its raining so no walks today." This explains that it is raining so you cant go for a walk.

"It's going to rain all day so we will be staying inside." This explains that your staying in inside because its raining

Weather forecast are a good way of predicting the weather. You can simply say that it looks like or the forecast said that it'll rain today, all day. For that reason, you can tell your dog that there will be no walking today.

Not to day boy, it's raining.
It's raining, so I can't walk you today.
No walk today because of the rain.

• Dogs need walking every day regardless of the weather. If you don't want to go out in all weathers, don't get a dog.

When you want to explain that you cannot walk your dog today because it is going to rain, then you can say it in the following ways:
-It's going to rain today, so I'm not taking my dog for a walk.
-I can't walk my dog today because it is going to rain

I'm sorry but I don't think we can go for our walk today. It's suppose to be rainy all day.
It's suppose to be a rainy day today, so I don't think we will be able to go for a walk.

The two sentences you see are great ways to let your dog know you will not be going for a walk because of the rain. In the first sentence you will see the word likely. Although this word has different meanings in this sentence it means probable. This is a word we use in both formal and informal settings. It would make a great addition to your vocabulary!