The highest day temperature in January 2026 was 52°F. The lowest night temperature was -19°F. The average values for day and night temperatures during January were 23.5°F и 19.8°F respectivly.

The average sea surface temperature in January 2026 for South Haven was 37.4°F. The maximum and minimum values were 33.8°F and 40.0°F respectively.

Most of the days in January are gloomy but you can also expect sunny days.

Precipitation total in January for South Haven is 0.9 in.

The average wind speed in January is 12.6 mph. It makes January one of the most windy months of the year for South Haven.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for South Haven in January is 2.0 hours.