October Weather in Allentown, United States

Last updated: June 24, 2025

In October, the average temperature in Allentown, United States hovers around 22°C (72°F). However, be prepared for a temperature range that can dip as low as 3°C (37°F) and soar up to 36°C (97°F). With an average humidity of 74% and about 112 mm (4.4 in) of precipitation spread over 10 days, expect a mix of warmth and occasional showers during your visit.

October Temperature in Allentown

In October in Allentown, the average temperature is 22°C (72°F), with maximums reaching 36°C (97°F) and minimums dropping as low as 3°C (37°F). Be prepared for a wide range of temperatures and pack accordingly for your trip!

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

The chart illustrates October temperature patterns in Allentown, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Allentown, October typically has an average temperature of 22°C (72°F), with highs reaching up to 36°C (97°F) and lows dropping to around 3°C (37°F).

Data source: Temperature data for Allentown generated using information from the Copernicus Climate Change Service.

October Precipitation in Allentown

In Allentown in October, the total precipitation amount is 112 mm (4.4 in) over the course of 10 days.

October Precipitation Trends in Allentown

The chart displays monthly precipitation patterns in Allentown, 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 Allentown, October typically receives around 112 mm (4.4 inches) of precipitation spread over approximately 10 days.

Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

October Humidity in Allentown

In Allentown in October, humidity is 74%. With an average temperature of 22°C (72°F), this humidity feels like a warm blanket enveloping you, making it a bit uncomfortable for traveling, as every step feels heavier and the air is thick.

October Average Humidity in Allentown

This chart illustrates the average monthly humidity levels in Allentown, 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 Allentown is approximately 74%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Allentown

In Allentown in October, 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 Allentown.

Maximum UV Index Levels in Allentown for October

The chart shows the monthly maximum UV Index (UVI) for Allentown 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 Allentown typically reaches 8, which falls under the very high exposure category.

Data source: Allentown 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 Allentown Compares to Other Months

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

This table compares monthly weather conditions in Allentown, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	11°C (53°F)	88 mm (3.5 inches)	83%	moderate
February Weather	15°C (59°F)	131 mm (5.1 inches)	82%	very high
March Weather	17°C (63°F)	77 mm (3.0 inches)	79%	very high
April Weather	19°C (67°F)	125 mm (4.9 inches)	77%	extreme
May Weather	24°C (75°F)	115 mm (4.5 inches)	74%	extreme
June Weather	26°C (80°F)	209 mm (8.2 inches)	70%	extreme
July Weather	27°C (81°F)	173 mm (6.8 inches)	78%	extreme
August Weather	27°C (81°F)	195 mm (7.7 inches)	78%	extreme
September Weather	26°C (79°F)	159 mm (6.2 inches)	79%	very high
October Weather	22°C (72°F)	112 mm (4.4 inches)	74%	very high
November Weather	15°C (59°F)	54 mm (2.1 inches)	83%	high
December Weather	13°C (56°F)	124 mm (4.9 inches)	86%	moderate