nomadseason

September Weather in Startup, United States

Last updated: June 24, 2025

In Startup, United States, the average temperature in September hovers around 14°C (57°F), offering a pleasant climate for exploration. Daytime highs can reach up to 30°C (87°F), while chilly nights may drop to a minimum of 3°C (37°F). Expect about 136 mm (5.4 in) of precipitation spread over 13 days, contributing to an average humidity of 62%. Make sure to pack accordingly for a variety of weather!

September Temperature in Startup

In September in Startup, the average temperature is 14°C (57°F). Maximum temperatures can reach 30°C (87°F), while minimum temperatures can drop to as low as 3°C (37°F). This makes Startup an ideal destination for travelers seeking a pleasant climate with opportunities for both warm and cool adventures.

September Weather in Startup: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Startup, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Startup, September typically has an average temperature of 14°C (57°F), with highs reaching up to 30°C (87°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec363439455257616256464136
Data source: Temperature data for Startup generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Startup

In Startup in September, the precipitation amount reaches 136 mm (5.4 in) over a span of 13 days.

September Precipitation Trends in Startup

The chart displays monthly precipitation patterns in Startup, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Startup, September typically receives around 136 mm (5.4 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec2613032021821121024030136261301300
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Startup

In Startup in September humidity is 62%. With an average temperature of 14°C (57°F), this humidity feels like a refreshing embrace, making it a pleasant experience for traveling as the mild climate invites you to explore without feeling too hot or sweaty.

September Average Humidity in Startup

This chart illustrates the average monthly humidity levels in Startup, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Startup is approximately 62%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%86%87%84%81%82%79%63%62%83%89%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Startup

In Startup in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Startup.

Maximum UV Index Levels in Startup for September

The chart shows the monthly maximum UV Index (UVI) for Startup in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Startup typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec236799997532
Data source: Startup September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in Startup Compares to Other Months

Weather in Startup varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Startup, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Startup, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (36°F)261 mm (10.3 inches)86%low
February Weather1°C (34°F)303 mm (11.9 inches)86%moderate
March Weather4°C (39°F)202 mm (7.9 inches)87%high
April Weather7°C (45°F)182 mm (7.2 inches)84%high
May Weather11°C (52°F)112 mm (4.4 inches)81%very high
June Weather14°C (57°F)102 mm (4.0 inches)82%very high
July Weather16°C (62°F)40 mm (1.6 inches)79%very high
August Weather17°C (62°F)30 mm (1.2 inches)63%very high
September Weather14°C (57°F)136 mm (5.4 inches)62%high
October Weather8°C (46°F)261 mm (10.3 inches)83%moderate
November Weather5°C (41°F)301 mm (11.8 inches)89%moderate
December Weather2°C (36°F)300 mm (11.8 inches)88%low

Compare Startup's Climate with Cities Worldwide