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September Weather in Medford, United States

Last updated: June 24, 2025

In Medford, United States, the average temperature in September hovers around 18°C (64°F), making for a pleasant climate. However, be prepared for fluctuating conditions, with temperatures ranging from a chilly 2°C (35°F) to a balmy 33°C (91°F). Expect about 132 mm (5.2 in) of rainfall over 9 days, contributing to an average humidity level of 81%—ideal for those who appreciate a lush, verdant atmosphere!

September Temperature in Medford

In September in Medford, the average temperature is 18°C (64°F). Maximums can reach 33°C (91°F), and minimums can be as low as 2°C (35°F). It's advisable to pack layers to accommodate the warm days and cooler nights when traveling during this time.

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

The chart illustrates September temperature patterns in Medford, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Medford, September typically has an average temperature of 18°C (64°F), with highs reaching up to 33°C (91°F) and lows dropping to around 2°C (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec171633435971747064483424
Data source: Temperature data for Medford 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 Medford

In Medford in September, the total precipitation amount is 132 mm (5.2 in) over a span of 9 days.

September Precipitation Trends in Medford

The chart displays monthly precipitation patterns in Medford, 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 Medford, September typically receives around 132 mm (5.2 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec35416391139119109133132943947
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Medford

In Medford in September, humidity is 81%. With an average temperature of 18°C (64°F), this humidity feels like a warm embrace, making travel both refreshing and slightly stifling at the same time.

September Average Humidity in Medford

This chart illustrates the average monthly humidity levels in Medford, 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 Medford is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%90%85%84%78%80%81%81%81%84%88%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Medford

In Medford in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Medford.

Maximum UV Index Levels in Medford for September

The chart shows the monthly maximum UV Index (UVI) for Medford 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 Medford typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35589101098532
Data source: Medford 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 Medford Compares to Other Months

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

This table compares monthly weather conditions in Medford, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-9°C (17°F)35 mm (1.4 inches)87%moderate
February Weather-9°C (17°F)41 mm (1.6 inches)90%moderate
March Weather1°C (33°F)63 mm (2.5 inches)85%moderate
April Weather6°C (44°F)91 mm (3.6 inches)84%very high
May Weather15°C (59°F)139 mm (5.5 inches)78%very high
June Weather22°C (71°F)119 mm (4.7 inches)80%very high
July Weather23°C (74°F)109 mm (4.3 inches)81%very high
August Weather21°C (70°F)133 mm (5.2 inches)81%very high
September Weather18°C (64°F)132 mm (5.2 inches)81%very high
October Weather9°C (48°F)94 mm (3.7 inches)84%moderate
November Weather1°C (34°F)39 mm (1.5 inches)88%moderate
December Weather-4°C (24°F)47 mm (1.9 inches)84%low

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