From Wiktionary, the free dictionary
uti (“in”) + fall (“case”)
utifall
- (often followed by att) in case
- Synonyms: ifall, (when replaceable by 'if' in English, like in the second example) om
Ta med regnkläder utifall att det börjar regna- Bring rainwear in case it starts to rain
Utifall det börjar regna så åker vi hem- If/In case it starts to rain, we'll go home