回答
-
extreme cold
-
severe cold
「厳しい寒さ」は英語で次のように言えます。
ーextreme cold
ーsevere cold
例:
I think the severe cold is going to continue for a while.
「厳しい寒さがしばらく続くと思います」
It seems like the extreme cold is going to stay with us for the next few days.
「厳しい寒さはここ2〜3日続くようです」
ご参考まで!