October weather forecast
Manassas, VA

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Weather in October

Entering October, Manassas experiences a further stride into fall conditions. With a noticeable decline from September's fees, the average high temperature hovers around a much cooler 67.1°F (19.5°C). As the cloud cover that characterized earlier months dissipates, the city enjoys clearer skies and the accompanying autumn sunshine. Although the cool air heralds the approach of another winter, the autumn months seldom fail to maintain their charm. As the month traverses, the city sees a gradual reduction in daylight hours, an early harbinger of the nearing winter.

Temperature

A change in temperatures is noted in Manassas as September gives way to October, with average highs reducing from a moderately hot 79°F (26.1°C) to a refreshing 67.1°F (19.5°C). In October, the recorded average low-temperature in Manassas is a frosty 49.1°F (9.5°C).

Humidity

In Manassas, the average relative humidity in October is 77%.

Rainfall

In Manassas, in October, during 11.8 rainfall days, 2.48" (63mm) of precipitation is typically accumulated. Throughout the year, in Manassas, there are 157.5 rainfall days, and 30.35" (771mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall in Manassas.

Daylight

In Manassas, Virginia, the average length of the day in October is 11h and 10min.
On the first day of October in Manassas, sunrise is at 7:06 am and sunset at 6:52 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 6:10 pm EDT.

Sunshine

In Manassas, Virginia, the average sunshine in October is 5.6h.

UV index

The average daily maximum UV index in October is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.
Note: In October, the average maximum UV index of 4 translates into the following recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are October temperatures in Manassas?

An average high-temperature, in October, in Manassas, is 67.1°F (19.5°C) and the average low-temperature is 49.1°F (9.5°C). In August, the average heat index (a.k.a. 'real feel', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 96.8°F (36°C).

What is the average humidity in October in Manassas?

The average relative humidity in October in Manassas is 77%.

How many days does it rain in October in Manassas?

In Manassas, Virginia, in October, during 11.8 rainfall days, 2.48" (63mm) of precipitation is typically accumulated.

When it does not snow in Manassas?

In Manassas, snow does not fall in May through October.

Does it snow in Manassas in October?

In Manassas, Virginia, in October, it doesn't snow. In November, it regularly snows.

What is the average length of the day in October in Manassas?

In Manassas, Virginia, the average day length in October is 11h and 10min.

When are sunrise and sunset in October in Manassas?

On the first day of October in Manassas, Virginia, sunrise is at 7:06 am and sunset at 6:52 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 6:10 pm EDT.

How long on average sun shines in October in Manassas?

In Manassas, the average sunshine duration in October is 5.6h.

What is the UV index reading in October in Manassas?

In Manassas, the average daily maximum UV index in October is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Manassas, VA

Average temperature in October - Manassas, VA
  • Average high temperature in October: 67.1°F

The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (40.6°F).

  • Average low temperature in October: 49.1°F

The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (26.4°F).

Average pressure in October
Manassas, VA

Average pressure in October - Manassas, VA
  • Average pressure in October: 30.04"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in October
Manassas, VA

Average wind speed in October - Manassas, VA
  • Average wind speed in October: 5.9mph

The windiest months (with the highest average wind speed) are March and April (7mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).

Average humidity in October
Manassas, VA

Average humidity in October - Manassas, VA
  • Average humidity in October: 77%

The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is July (72%).

Average rainfall in October
Manassas, VA

Average rainfall in October - Manassas, VA
  • Average rainfall in October: 2.48"

The wettest month (with the highest rainfall) is August (3.43").
The driest month (with the least rainfall) is September (1.93").

Average rainfall days in October
Manassas, VA

Average rainfall days in October - Manassas, VA
  • Average rainfall days in October: 11.8 days

The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is November (9.3 days).

Average snowfall in October
Manassas, VA

Average snowfall in October - Manassas, VA
  • Average snowfall in October: 0"

The month with the highest snowfall is January (3.7").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in October
Manassas, VA

Average snowfall days in October - Manassas, VA
  • Average snowfall days in October: 0 days

The month with the highest number of snowfall days is February (5.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in October /
Average sunshine in October
Manassas, VA

Average daylight in October / Average sunshine in October - Manassas, VA
  • Average daylight in October: 11h and 1min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in October: 5h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 12min).

Average sunshine days in October
Manassas, VA

Average sunshine days in October - Manassas, VA
  • Average sunshine days in October: 17.7 days

The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is May (11.7 days).

Average UV index in October
Manassas, VA

Average UV index in October - Manassas, VA
  • Average UV index in October: 4

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in October
Manassas, VA

Average cloud cover in October - Manassas, VA
  • Average cloud cover in October: 40

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).

Average visibility in October
Manassas, VA

Average visibility in October - Manassas, VA
  • Average visibility in October: 5mi

The months with the highest visibility are January, February, March, April, June, July, August and November (6mi).
The months with the lowest visibility are May, September, October and December (5mi).

Manassas, Virginia, USA

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