Weather in Sacramento in January

A good month. January works. It is not the peak, but nothing about it fights you. Highs average 15.1 °C, lows 5.8 °C, and rain falls on 9 days — nothing in the month is working against you.

January ranks 9 of 12 in Sacramento: past the worst of the year but short of May, which is the month to book if the dates are open.

Rain on 9 days, 3 of them heavy. Enough to need a plan B, not enough to need a plan around it. Pack for 15.1 °C days and 5.8 °C nights; the spread matters more here than any single number.

What the averages hide

The averages here are honest — no hidden extremes worth planning around. Across the twenty years measured, the hottest January day reached 25.9 °C and the coldest night fell to -3.4 °C, and the wettest single day dropped 66 mm — roughly 72% of the month's rain in one day.

This is the volatile part. January rainfall has ranged from 0 mm to 331 mm across the twenty years measured — a 331 mm spread around an average of 92 mm. The average is real but almost no individual January looks like it, so treat the figure as the middle of a wide range rather than a forecast.

Wind is light at 6.1 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 74%.

How January sits in the year

Temperatures hold steady either side: 14.8 °C in December, 15.1 here, 16.3 in February. Nothing about the timing within the month matters much.

Daylight in January

January sits at the dark end of Sacramento's year — 9.7 hours of daylight against 14.8 at midsummer, gaining 0.7 hours across the month. Sightseeing days are genuinely shorter, and an itinerary built for summer will not fit.

An inland climate

With no coast nearby, the year swings a fair way — 31.9 °C between the warmest afternoons and the coldest nights, wider than any coastal city at this latitude would manage.

How busy it gets

Shoulder. The value months — prices ease off and you get the place closer to itself.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

January in Sacramento versus nearby

If Sacramento is one option among several, the nearby comparison is worth making. Napa is close enough to be a coin toss — within a degree on temperature, the same number of rain days. San Francisco is close enough to be a coin toss — within a degree on temperature, the same number of rain days.

So: January is a compromise. May is 27 points better and is what Sacramento is actually like at its best — worth moving the trip for if that is possible, and worth adjusting expectations for if it is not.

Every month in Sacramento

See all twelve months in Sacramento, or where else to go in January.