nomadseason

September Weather in Hilmar-Irwin, United States

Last updated: June 24, 2025

In September, the average temperature in Hilmar-Irwin, United States is a pleasant 25°C (77°F). However, you can expect a range, with minimums dipping to 11°C (51°F) and soaring to a maximum of 43°C (109°F). Precipitation is minimal, with just 1 mm (0.1 in) recorded over 0 days, making it a great time to enjoy the outdoors. The average humidity sits comfortably at 55%, ensuring a warm and inviting atmosphere.

September Temperature in Hilmar-Irwin

In September in Hilmar-Irwin, the average temperature is 25°C (77°F), with maximums reaching up to 43°C (109°F) and minimums dipping as low as 11°C (51°F). This varied climate makes Hilmar-Irwin an ideal destination for travelers looking to enjoy warm weather while also being prepared for cooler evenings.

September Weather in Hilmar-Irwin: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Hilmar-Irwin, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hilmar-Irwin, September typically has an average temperature of 25°C (77°F), with highs reaching up to 43°C (109°F) and lows dropping to around 11°C (51°F).
JanFebMarAprMayJunJulAugSepOctNovDec505257647180848277665650
Data source: Temperature data for Hilmar-Irwin 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 Hilmar-Irwin

In Hilmar-Irwin in September, the precipitation amount is 1 mm (0.1 in) during 0 days, indicating a very dry period.

September Precipitation Trends in Hilmar-Irwin

The chart displays monthly precipitation patterns in Hilmar-Irwin, 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 Hilmar-Irwin, September typically receives around 1 mm (0.1 inches) of precipitation spread over approximately 0 days.
JanFebMarAprMayJunJulAugSepOctNovDec93728134212001173487
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Hilmar-Irwin

In Hilmar-Irwin in September humidity is 55%. With an average temperature of 25°C (77°F), this humidity feels like a warm, enveloping blanket that makes the air feel heavier, encouraging leisurely strolls and inviting you to explore the vibrant surroundings at a comfortable pace.

September Average Humidity in Hilmar-Irwin

This chart illustrates the average monthly humidity levels in Hilmar-Irwin, 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 Hilmar-Irwin is approximately 55%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%84%82%78%71%64%59%54%55%62%78%80%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Hilmar-Irwin

In Hilmar-Irwin in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Hilmar-Irwin.

Maximum UV Index Levels in Hilmar-Irwin for September

The chart shows the monthly maximum UV Index (UVI) for Hilmar-Irwin 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 Hilmar-Irwin typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3588101111109643
Data source: Hilmar-Irwin 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 Hilmar-Irwin Compares to Other Months

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

This table compares monthly weather conditions in Hilmar-Irwin, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather10°C (51°F)93 mm (3.6 inches)82%moderate
February Weather11°C (53°F)72 mm (2.8 inches)84%moderate
March Weather14°C (57°F)81 mm (3.2 inches)82%very high
April Weather18°C (64°F)33 mm (1.3 inches)78%very high
May Weather22°C (71°F)21 mm (0.8 inches)71%very high
June Weather26°C (80°F)2 mm (0.1 inches)64%extreme
July Weather29°C (84°F)0 mm (0.0 inches)58%extreme
August Weather28°C (82°F)0 mm (0.0 inches)54%very high
September Weather25°C (77°F)1 mm (0.1 inches)55%very high
October Weather19°C (67°F)16 mm (0.6 inches)62%high
November Weather13°C (56°F)34 mm (1.4 inches)78%moderate
December Weather10°C (50°F)87 mm (3.4 inches)80%moderate

Compare Hilmar-Irwin's Climate with Cities Worldwide