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September Weather in Sudden Valley, United States

Last updated: June 24, 2025

In September, the average temperature in Sudden Valley, United States is a mild 14°C (58°F), with daytime highs reaching a comfortable 29°C (85°F) and nighttime lows dipping to 5°C (41°F). Expect an average precipitation of 150 mm (5.9 in) spread over 13 days, contributing to a relatively high humidity of 76%. Whether you're enjoying the warmth or braving the occasional shower, this month offers a unique charm to experience.

September Temperature in Sudden Valley

In September in Sudden Valley, the average temperature is 14°C (58°F). The maximum can reach 29°C (85°F), and the minimum can be as low as 5°C (41°F). This range makes it a perfect time for travelers to enjoy outdoor activities while being prepared for cooler evenings.

September Weather in Sudden Valley: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Sudden Valley, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sudden Valley, September typically has an average temperature of 14°C (58°F), with highs reaching up to 29°C (85°F) and lows dropping to around 5°C (41°F).
JanFebMarAprMayJunJulAugSepOctNovDec373540455257626357484236
Data source: Temperature data for Sudden Valley generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Sudden Valley

In Sudden Valley in September, the precipitation amount is 150 mm (5.9 in) spread over 13 days.

September Precipitation Trends in Sudden Valley

The chart displays monthly precipitation patterns in Sudden Valley, 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 Sudden Valley, September typically receives around 150 mm (5.9 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec24022819415294803726150225307271
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Sudden Valley

In Sudden Valley in September humidity is 76%. With an average temperature of 14°C (58°F), this humidity feels like a warm, thick blanket wrapping around you, making outdoor activities feel sticky and draining, and prompting travelers to seek shade and stay hydrated often.

September Average Humidity in Sudden Valley

This chart illustrates the average monthly humidity levels in Sudden Valley, 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 Sudden Valley is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%86%88%86%82%82%85%77%76%88%88%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sudden Valley

In Sudden Valley in September, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Sudden Valley, you can refer to this Hourly UV Index in Sudden Valley.

Maximum UV Index Levels in Sudden Valley for September

The chart shows the monthly maximum UV Index (UVI) for Sudden Valley 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 Sudden Valley typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689986421
Data source: Sudden Valley 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 Sudden Valley Compares to Other Months

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

This table compares monthly weather conditions in Sudden Valley, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)240 mm (9.4 inches)87%low
February Weather1°C (35°F)228 mm (9.0 inches)86%moderate
March Weather4°C (40°F)194 mm (7.6 inches)88%moderate
April Weather7°C (45°F)152 mm (6.0 inches)86%high
May Weather11°C (52°F)94 mm (3.7 inches)82%very high
June Weather14°C (57°F)80 mm (3.2 inches)82%very high
July Weather16°C (62°F)36 mm (1.4 inches)85%very high
August Weather17°C (63°F)26 mm (1.0 inches)77%very high
September Weather14°C (58°F)150 mm (5.9 inches)76%high
October Weather9°C (48°F)225 mm (8.9 inches)88%moderate
November Weather6°C (42°F)307 mm (12.1 inches)88%low
December Weather2°C (37°F)271 mm (10.7 inches)89%low

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