There are days when it's cold enough to turn on the heater
There are days when it's so cold I have to turn on the heater
「ストーブをつけなけなきゃいけない位寒い日がある。」= There are days when it's cold enough to turn on the heater / There are days when it's so cold I have to turn on the heater
ボキャブラリー
there are days = 日がある
cold = 寒い
enough = 位
turn on the heater = ストーブを付ける
have to = ~しなければならない
Here in Hokkaido, there are days when it's so cold that we have to fire up the old fire heater
Here in Hokkaido, ( ここ北海道では)there are days (〜 の日があって)when it's so cold ( そんなに寒い)that we have to(〜 必要がある) fire up ( 火のヒーター をつける)the old fire heater( あのストーブヒーター)