Month 1 of 12
How Many Days in January?
January has 31 days, every year.
January 2026
31days
From Thursday, Jan 1, 2026 to Saturday, Jan 31, 2026.
- Weeks
- 4 weeks 3 days
- Weekdays
- 22
- Weekend days
- 9
- US holidays
- 2
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About January
January at a Glance
Named after Janus, the Roman god of doorways and beginnings. It always starts the year, and New Year’s Day on the 1st is a public holiday almost everywhere.
A quick way to remember month lengths is the knuckle rule: make two fists and count across your knuckles and the gaps between them. Every month that lands on a knuckle has 31 days; every month in a gap has 30, except February. Or use the rhyme: “Thirty days hath September, April, June and November…”
Days in Every Month
Questions About How Many Days in January
How many days are in January?
January always has 31 days.
How many weeks are in January?
January 2026 has 31 days, which is 4 weeks and 3 days.
How many weekdays are in January 2026?
22 weekdays (Monday to Friday) and 9 weekend days. January 2026 starts on a Thursday and ends on a Saturday.
What holidays are in January?
US federal holidays in January 2026: New Year's Day (Jan 1, 2026); Martin Luther King Jr. Day (Jan 19, 2026).
What number month is January?
January is month 1 of 12, in quarter 1.