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September Weather in Ephrata, United States

Last updated: June 24, 2025

In Ephrata, United States, the average temperature in September hovers around 19°C (66°F), making it a pleasant time to visit. However, be prepared for temperature swings, with minimums plummeting to 4°C (39°F) and maximums soaring to 37°C (99°F). During this month, expect about 13 mm (0.5 in) of precipitation spread over 3 days, contributing to an average humidity of 60%.

September Temperature in Ephrata

In September in Ephrata, the average temperature is 19°C (66°F), with maximums reaching 37°C (99°F) and minimums dipping as low as 4°C (39°F). This variation in temperature makes Ephrata an ideal destination for travelers seeking diverse weather experiences.

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

The chart illustrates September temperature patterns in Ephrata, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ephrata, September typically has an average temperature of 19°C (66°F), with highs reaching up to 37°C (99°F) and lows dropping to around 4°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec303243536471797766514032
Data source: Temperature data for Ephrata 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 Ephrata

In Ephrata in September, the precipitation amount is 13 mm (0.5 in) over a span of 3 days.

September Precipitation Trends in Ephrata

The chart displays monthly precipitation patterns in Ephrata, 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 Ephrata, September typically receives around 13 mm (0.5 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec433525251571313303736
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Ephrata

In Ephrata in September, humidity is 60%. With an average temperature of 19°C (66°F), this humidity feels like a warm, slightly sticky embrace, making traveling enjoyable yet necessitating occasional breaks to stay refreshed.

September Average Humidity in Ephrata

This chart illustrates the average monthly humidity levels in Ephrata, 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 Ephrata is approximately 60%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%86%86%82%77%79%77%62%60%80%87%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Ephrata

In Ephrata 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 Ephrata.

Maximum UV Index Levels in Ephrata for September

The chart shows the monthly maximum UV Index (UVI) for Ephrata 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 Ephrata typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2356891097532
Data source: Ephrata 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 Ephrata Compares to Other Months

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

This table compares monthly weather conditions in Ephrata, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (31°F)43 mm (1.7 inches)85%low
February Weather0°C (32°F)35 mm (1.4 inches)86%moderate
March Weather6°C (44°F)25 mm (1.0 inches)86%moderate
April Weather11°C (53°F)25 mm (1.0 inches)82%high
May Weather18°C (64°F)14 mm (0.6 inches)77%very high
June Weather22°C (72°F)7 mm (0.3 inches)79%very high
July Weather26°C (79°F)1 mm (0.0 inches)77%very high
August Weather25°C (78°F)3 mm (0.1 inches)62%very high
September Weather19°C (66°F)13 mm (0.5 inches)60%high
October Weather10°C (51°F)30 mm (1.2 inches)80%moderate
November Weather4°C (40°F)37 mm (1.5 inches)87%moderate
December Weather0°C (33°F)36 mm (1.4 inches)86%low

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