Washington
District of Columbia, USA
Long-term weather forecast
Long-term weather forecast

October weather forecast and climate
Washington, DC

Stunning reflective view of rows of jacaranda trees in spring in the tidal basin of the Washington Monument in DC
Stunning reflective view of rows of jacaranda trees in spring in the tidal basin of the Washington Monument in DC
October, the same as September, is another enjoyable autumn month in Washington, District of Columbia, with average temperature ranging between min 51.3°F (10.7°C) and max 66.9°F (19.4°C).

Temperature

In Washington, the average high-temperature decreases, from a warm 78.4°F (25.8°C) in September, to an enjoyable 66.9°F (19.4°C). In Washington, District of Columbia, the average low-temperature is 51.3°F (10.7°C).

Humidity

In Washington, the average relative humidity is 75%.

Rainfall

In Washington, during October, the rain falls for 10.4 days and regularly aggregates up to 2.01" (51mm) of precipitation. In Washington, during the entire year, the rain falls for 149.1 days and collects up to 26.14" (664mm) of precipitation.

Snowfall

In Washington snow does not fall in April through November.

Daylight

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

Sunshine

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

UV index

In October, the average daily maximum UV index in Washington, District of Columbia, is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from the exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 4 in October transform into the following instructions:
Take precautions - Protection against sunburn is recommended. 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 Washington, District of Columbia, in October, 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 many days does it rain in October in Washington?

In Washington, in October, during 10.4 rainfall days, 2.01" (51mm) of precipitation is typically 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?

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

How long on average sun shines in October in Washington?

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

What is the UV index reading in October in Washington?

The average daily maximum UV index in October in Washington, District of Columbia, is 4. A UV Index estimate of 3 to 5 represents a moderate health threat from the exposure to the Sun's UV radiation.
Average temperature in October - Washington, DC
  • Average high temperature in October: 19.4°C

The warmest month (with the highest average high temperature) is July (31.1°C).
The month with the lowest average high temperature is January (4.8°C).

  • Average low temperature in October: 10.7°C

The month with the highest average low temperature is July (20.6°C).
The coldest month (with the lowest average low temperature) is January (-2.5°C).

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: 51mm

The wettest month (with the highest rainfall) is August (88mm).
The driest month (with the lowest rainfall) is January (40mm).

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 lowest number of rainy days is November (8.1 days).

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

The month with the highest snowfall is January (55mm).
Months with the lowest snowfall are April, May, June, July, August, September, October and November (0mm).

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 lowest number of 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 shortest days is December (Average daylight: 9.5h).

  • Average sunshine in October: 5.7h

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

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).