Might be a good way to start the year (especially if you have a lot of new students). I would allow students to pick some maybe) that they are willing to have shared. Then you could use it as an ice breaker also ~ Nice prompts for back to school.
English vocabulary: different types of weather. For classroom activity, give kids a mini pack of weather cards. play sounds or show other pics asaociated with one of the weathers. Kids can hold up the correct card to match the correct term to the weather.
Having the prepositions of time listed and in sections is nice. But I would also have more graphic examples. I would make a worksheet where the students matched examples to the appropriate preposition of time.