As of 23:08 EDT

Herndon, VA weather in August

75°

Herndon, Saturday, 8 August, 23:08

Partly cloudy. Feels like 76°. High 88°, low 71°.

Pressure30.00 inHg

Wind6.9 mph SW

Humidity81%

Visibility6.2 mi

Dew point69°

See detailed hourly forecast

In August, Herndon, VA averages a high of 84.8° and a low of 67.2°. About 3.4 inches of precipitation fall over the month (11 wet days). The record high is 100.6° (1988) and the record low 49.1° (1986). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	86.5°	68.4°	45%	97.5° (2006)	61.7° (1997)
2	86.5°	68.5°	37%	98.6° (2006)	58.3° (1992)
3	87.1°	69.3°	45%	98.4° (2006)	57° (1985)
4	87.1°	68.9°	43%	97.2° (1987)	57.4° (1965)
5	85.8°	68.4°	37%	97.3° (1995)	59.7° (1970)
6	84.4°	67.3°	40%	93.4° (1977)	55.9° (1994)
7	84.7°	67.6°	43%	95° (2006)	54.1° (1994)
8	85.5°	67.8°	30%	99.1° (2007)	56.3° (2004)
9	86°	68.2°	43%	95.2° (2022)	54.1° (1989)
10	85.6°	68.7°	33%	97.2° (2010)	56.8° (1989)
11	85.6°	67.8°	47%	98.1° (2021)	53.4° (1972)
12	84.6°	67.3°	33%	99.5° (2021)	57.7° (1968)
13	84.6°	67.3°	43%	96.8° (2002)	55.2° (1971)
14	84.9°	67.5°	45%	97.3° (2002)	54.7° (1964)
15	84.7°	67.6°	35%	99.9° (1988)	54.1° (1964)
16	85.1°	67.5°	37%	97.7° (1997)	54.9° (1979)
17	85.8°	67.8°	40%	100.6° (1988)	53.6° (1979)
18	84.2°	67.8°	43%	95.7° (1987)	54.7° (1981)
19	83.7°	66.9°	42%	95.2° (2019)	56.1° (1981)
20	83.3°	66.4°	32%	100.6° (1962)	54.3° (1964)
21	82.8°	65.7°	42%	95.2° (1968)	53.2° (2000)
22	82.8°	65.1°	30%	99° (1983)	54.5° (2024)
23	82.6°	65.1°	25%	97.9° (1968)	54° (2024)
24	83.7°	65.1°	22%	95.4° (1995)	54.9° (1971)
25	84.4°	65.7°	27%	96.3° (1968)	55° (1971)
26	84.7°	66°	18%	94.8° (1975)	55° (1963)
27	84.7°	67.1°	37%	96.3° (1987)	57.7° (1969)
28	85.1°	67.5°	45%	97° (2024)	56.7° (1968)
29	84.2°	67.1°	33%	95.7° (1973)	49.1° (1986)
30	84.2°	65.7°	25%	95.9° (2022)	50.7° (1986)
31	83.5°	66.2°	27%	95.5° (1973)	52.9° (1976)