The highest day temperature in September 2026 was 72°F. The lowest night temperature was 47°F. The average values for day and night temperatures during September were 59.9°F и 55.3°F respectivly.

The average sea surface temperature in September 2026 for Cassino was 59.1°F. The maximum and minimum values were 56.4°F and 61.6°F respectively.

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

Precipitation total in September for Cassino is 1.8 in. It makes september one of the most rainy months of the year.

The average wind speed in September is 11.9 mph. This value is relatively stable throughout the year.

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 Cassino in September is 5.5 hours.