October Weather in Rosslyn, United States

Last updated: June 24, 2025

In Rosslyn, United States, the average temperature in October hovers around 17°C (62°F), with a minimum dip to 1°C (34°F) and a maximum reaching 36°C (97°F). Expect about 104 mm (4.1 in) of precipitation spread over 9 days, contributing to an average humidity of 81%. Whether you're basking in the warmth or dodging the rain, this month has a bit of everything!

October Temperature in Rosslyn

In October in Rosslyn, the average temperature is 17°C (62°F). Maximum temperatures can reach 36°C (97°F), while minimums can dip as low as 1°C (34°F). Be prepared for both warm days and cool nights when traveling to Rosslyn during this month.

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

The chart illustrates October temperature patterns in Rosslyn, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rosslyn, October typically has an average temperature of 17°C (62°F), with highs reaching up to 36°C (97°F) and lows dropping to around 1°C (34°F).

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

October Precipitation in Rosslyn

In Rosslyn in October, the precipitation amount is 104 mm (4.1 in) over the course of 9 days.

October Precipitation Trends in Rosslyn

The chart displays monthly precipitation patterns in Rosslyn, 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 Rosslyn, October typically receives around 104 mm (4.1 inches) of precipitation spread over approximately 9 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 Rosslyn

In Rosslyn in October, humidity is 81%. With an average temperature of 17°C (62°F), this humidity feels like a warm blanket enveloping you, making outdoor adventures feel sticky and requiring frequent breaks to stay comfortable while exploring.

October Average Humidity in Rosslyn

This chart illustrates the average monthly humidity levels in Rosslyn, 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 Rosslyn is approximately 81%, 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 Rosslyn

In Rosslyn in October, 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 Rosslyn.

Maximum UV Index Levels in Rosslyn for October

The chart shows the monthly maximum UV Index (UVI) for Rosslyn 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 Rosslyn typically reaches 7, which falls under the high exposure category.

Data source: Rosslyn 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 Rosslyn Compares to Other Months

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

This table compares monthly weather conditions in Rosslyn, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	3°C (37°F)	61 mm (2.4 inches)	84%	moderate
February Weather	5°C (41°F)	98 mm (3.9 inches)	83%	moderate
March Weather	8°C (46°F)	87 mm (3.4 inches)	83%	high
April Weather	14°C (57°F)	100 mm (4.0 inches)	81%	very high
May Weather	19°C (66°F)	127 mm (5.0 inches)	78%	very high
June Weather	24°C (75°F)	118 mm (4.7 inches)	79%	very high
July Weather	27°C (81°F)	157 mm (6.2 inches)	74%	very high
August Weather	25°C (77°F)	140 mm (5.5 inches)	72%	very high
September Weather	22°C (72°F)	95 mm (3.8 inches)	75%	very high
October Weather	17°C (62°F)	104 mm (4.1 inches)	81%	high
November Weather	8°C (47°F)	81 mm (3.2 inches)	85%	moderate
December Weather	5°C (41°F)	93 mm (3.7 inches)	84%	moderate