Somewhat; a little — indicates a small amount or degree is present.
風邪は幾分か良くなった。
My cold has gotten somewhat better.
幾分かの貯金は将来の安心になる。
Some savings can provide peace of mind for the future.
この説明で幾分か納得できた。
I was somewhat convinced by this explanation.
To some extent; partly — indicates partial degree or extent.
気温は幾分か下がったが、まだ暑い。
The temperature has dropped somewhat, but it's still hot.
その対策は幾分か効果があるように見える。
That measure seems to have some effect.