The highest day temperature in September 2026 was 89°F. The lowest night temperature was 76°F. The average values for day and night temperatures during September were 82.7°F и 81.5°F respectivly.

The average sea surface temperature in September 2026 for Polis was 86.7°F. The maximum and minimum values were 84.4°F and 88.0°F respectively.

Almost all days in September are sunny. There is very low probability of clouds or gloomy days.

Precipitation total in September for Polis is 0.2 in. It makes september one of the least rainy months of the year.

The average wind speed in September is 7.6 mph. It makes September one of the most windless months of the year for Polis.

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 Polis in September is 11.5 hours.