As of 12:45 EDT

Herndon, VA weather in October

89°

Herndon, Sunday, 9 August, 12:45

Overcast. Feels like 96°. High 91°, low 72°.

Pressure30.03 inHg

Wind2 mph SE

Humidity57%

Visibility6.2 mi

Dew point72°

See detailed hourly forecast

In October, Herndon, VA averages a high of 66.1° and a low of 49.2°. About 3.4 inches of precipitation fall over the month (8 wet days). The record high is 94.1° (2019) and the record low 26.8° (2011). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	70.7°	54.3°	33%	88.3° (2019)	42.6° (1992)
2	71.4°	54.5°	28%	94.1° (2019)	42.3° (1997)
3	71.4°	54°	22%	86.2° (2019)	37° (2003)
4	71.4°	54.3°	25%	86.9° (2018)	32.4° (1974)
5	70.7°	53.6°	22%	87.4° (2013)	38.1° (1996)
6	70.7°	52.5°	20%	87.6° (2013)	38.3° (1965)
7	69.3°	52.5°	22%	89.2° (2007)	39.2° (1964)
8	67.6°	51.4°	23%	88.9° (2007)	36.3° (1964)
9	70°	52°	40%	90.7° (2007)	37° (2001)
10	67.8°	52°	28%	81.9° (2007)	36.1° (1979)
11	67.1°	51.3°	27%	82.8° (2010)	35.2° (1964)
12	67.3°	50.5°	22%	83.8° (1962)	34.3° (1964)
13	67.8°	50.9°	22%	79.9° (1978)	36.9° (1988)
14	68°	50.7°	25%	81.7° (2008)	32.7° (1988)
15	68.4°	49.6°	25%	83.7° (2021)	34.7° (1987)
16	66.2°	49.1°	25%	81.3° (1989)	38.7° (2006)
17	63.9°	48.2°	23%	79.7° (1963)	37.9° (2009)
18	64.8°	46.8°	23%	81.7° (2016)	35.4° (1977)
19	64.2°	47.3°	32%	83.7° (2016)	32.4° (1976)
20	63.9°	47.3°	30%	81.5° (1969)	30.6° (1972)
21	64.8°	46°	27%	79.3° (1984)	30.9° (1974)
22	64°	46.4°	18%	78.8° (2007)	31.8° (1974)
23	64.2°	46.2°	20%	79.7° (1978)	31.8° (1997)
24	62.8°	47.1°	32%	80.8° (2001)	28° (1969)
25	62.1°	46.8°	25%	79.3° (2021)	34.3° (1962)
26	61.7°	46.2°	25%	78.6° (2023)	32.2° (2013)
27	62.1°	45.9°	27%	81.1° (1963)	30.9° (1979)
28	62.4°	46°	25%	82.2° (2023)	27.1° (1976)
29	60.4°	44.1°	20%	77.9° (1984)	30.2° (1976)
30	60.6°	42.8°	27%	79.3° (2016)	26.8° (2011)
31	61.5°	44.2°	17%	80.1° (2024)	29.8° (2011)