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October Weather in Greencastle, United States

Last updated: June 24, 2025

In Greencastle, United States, the average temperature for October hovers around 14°C (58°F). However, be prepared for a wide temperature range; it can dip to a chilly -3°C (27°F) or soar up to a sweltering 33°C (91°F). Expect 111 mm (4.4 in) of precipitation over 12 days, contributing to an average humidity level of 76%. Whether you’re basking in the sun or seeking shelter from the rain, this month offers a unique blend of weather conditions!

October Temperature in Greencastle

In October in Greencastle, the average temperature is 14°C (58°F). Maximum temperatures can reach 33°C (91°F), while minimum temperatures can drop as low as -3°C (27°F). Be sure to pack for a range of weather conditions during your travels!

October Weather in Greencastle: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Greencastle, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Greencastle, October typically has an average temperature of 14°C (58°F), with highs reaching up to 33°C (91°F) and lows dropping to around -3°C (27°F).
JanFebMarAprMayJunJulAugSepOctNovDec303343526473777470574136
Data source: Temperature data for Greencastle 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.

October Precipitation in Greencastle

In Greencastle, in October, the precipitation amount is 111 mm (4.4 in) over a span of 12 days.

October Precipitation Trends in Greencastle

The chart displays monthly precipitation patterns in Greencastle, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Greencastle, October typically receives around 111 mm (4.4 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec8491126101141108101104691118982
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

October Humidity in Greencastle

In Greencastle in October 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.

October Average Humidity in Greencastle

This chart illustrates the average monthly humidity levels in Greencastle, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Greencastle is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%86%84%79%82%79%70%69%76%88%87%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Greencastle

In Greencastle in October, 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 Greencastle, you can refer to this Hourly UV Index in Greencastle.

Maximum UV Index Levels in Greencastle for October

The chart shows the monthly maximum UV Index (UVI) for Greencastle in October, 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 October, the maximum UV index in Greencastle typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910111098643
Data source: Greencastle October 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 October Weather in Greencastle Compares to Other Months

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

This table compares monthly weather conditions in Greencastle, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)84 mm (3.3 inches)87%moderate
February Weather1°C (33°F)91 mm (3.6 inches)85%moderate
March Weather6°C (43°F)126 mm (5.0 inches)86%high
April Weather11°C (52°F)101 mm (4.0 inches)84%very high
May Weather18°C (65°F)141 mm (5.6 inches)79%very high
June Weather23°C (74°F)108 mm (4.3 inches)82%extreme
July Weather25°C (77°F)101 mm (4.0 inches)79%very high
August Weather23°C (74°F)104 mm (4.1 inches)70%very high
September Weather21°C (70°F)69 mm (2.7 inches)69%very high
October Weather14°C (58°F)111 mm (4.4 inches)76%high
November Weather5°C (42°F)89 mm (3.5 inches)88%moderate
December Weather2°C (36°F)82 mm (3.2 inches)87%moderate

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