The highest day temperature in September 2026 was 88°F. The lowest night temperature was 47°F. The average values for day and night temperatures during September were 71.4°F и 62.6°F respectivly.

The average sea surface temperature in September 2026 for Saugatuck was 67.6°F. The maximum and minimum values were 48.8°F and 76.0°F respectively.

Most of the days in September are sunny but you can also expect cloudy and gloomy days.

Precipitation total in September for Saugatuck is 0.7 in. It makes september one of the least rainy months of the year.

The average wind speed in September is 9.6 mph. It makes September one of the most windless months of the year for Saugatuck.

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 Saugatuck in September is 7.8 hours.