October weather forecast and climate
Washington, DC

Rows of jacaranda trees in spring in the tidal basin of the Washington Monument in Washington city, DC, USA
Rows of jacaranda trees in spring in the tidal basin of the Washington Monument in Washington city, DC, USA
October, the same as September, is another enjoyable autumn month in Washington, District of Columbia, with temperature in the range of an average high of 66.9°F (19.4°C) and an average low of 51.3°F (10.7°C).

Temperature

In October, the average high-temperature drops, from a moderately hot 78.4°F (25.8°C) in September, to an enjoyable 66.9°F (19.4°C). In October, in Washington, the average low-temperature is 51.3°F (10.7°C).

Humidity

In Washington, the average relative humidity is 75%.

Rainfall

In Washington, in October, it is raining for 10.4 days, with typically 2.01" (51mm) of accumulated precipitation. Throughout the year, there are 149.1 rainfall days, and 26.14" (664mm) of precipitation is accumulated.

Snowfall

April through November are months without snowfall.

Daylight

In Washington, the average length of the day is 11.2h.

Sunshine

In Washington, the average sunshine in October is 5.7h.

UV index

In October, the average daily maximum UV index in Washington, District of Columbia, is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: In October, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in October in Washington?

In October, in Washington, District of Columbia, the average high-temperature is 66.9°F (19.4°C), and the average low-temperature is 51.3°F (10.7°C).

What is the average humidity in October in Washington?

The average relative humidity in October in Washington is 75%.

How much does it rain in Washington in October?

In October, the rain falls for 10.4 days. Throughout October, 2.01" (51mm) of precipitation is accumulated.

When it does not snow in Washington?

In Washington, District of Columbia, snow does not fall in April through November.

How many hours of daylight does Washington have in October?

The average length of the day in October in Washington, District of Columbia, is 11.2h.

How long on average sun shines in October in Washington?

In Washington, District of Columbia, the average sunshine in October is 5.7h.

What is the UV index intensity in October in Washington?

The average daily maximum UV index in October in Washington, District of Columbia, is 4. A UV Index value of 3 to 5 symbolizes a medium hazard to health from the exposure to the Sun's UV rays.
Average temperature in October - Washington, DC
  • Average high temperature in October: 66.9°F

The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (40.6°F).

  • Average low temperature in October: 51.3°F

The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (27.5°F).

Average pressure in October - Washington, DC
  • Average pressure in October: 30.04"

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

Average wind speed in October - Washington, DC
  • Average wind speed in October: 6.8mph

The windiest month (with the highest average wind speed) is March (7.9mph).
The calmest month (with the lowest average wind speed) is August (5mph).

Average humidity in October - Washington, DC
  • Average humidity in October: 75%

The month with the highest relative humidity is May (76%).
Months with the lowest relative humidity are April and July (71%).

Average rainfall in October - Washington, DC
  • Average rainfall in October: 2.01"

The wettest month (with the highest rainfall) is August (3.46").
The driest month (with the least rainfall) is January (1.57").

Average rainfall days in October - Washington, DC
  • Average rainfall days in October: 10.4 days

The month with the highest number of rainy days is July (16.4 days).
The month with the least rainy days is November (8.1 days).

Average snowfall in October - Washington, DC
  • Average snowfall in October: 0"

The month with the highest snowfall is January (2.17").
Months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in October - Washington, DC
  • Average snowfall days in October: 0 days

Months with the highest number of snowfall days are January and February (3.8 days).
Months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in October / Average sunshine in October - Washington, DC
  • Average daylight in October: 11.2h

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in October: 5.7h

The month with the most sunshine is July (Average sunshine: 10.7h).
Months with the least sunshine are January, February and December (Average sunshine: 5.1).

Average sunshine days in October - Washington, DC
  • Average sunshine days in October: 19.3 days

The month with the most sunshine days is November (20 days).
The month with the least sunshine days is May (12.8 days).

Average UV index in October - Washington, DC
  • Average UV index in October: 4

The month with the highest UV index is June (UV index 7).
Months with the lowest UV index are January and December (UV index 2).

Average cloud cover in October - Washington, DC
  • Average cloud cover in October: 38

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 30).

Average visibility in October - Washington, DC
  • Average visibility in October: 6mi

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