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As of 00:08 EDT

Weather in Herndon, VA

75°Current weather

Herndon, Sunday, 9 August, 00:08

Overcast. Feels like 76°. High 89°, low 73°.

Pressure30.00 inHg
Wind5.4 mph W
Humidity83%
Visibility6.2 mi
Dew point70°

Two-week outlook for Herndon, VA: week one averages a high of 85.9° and week two 80.5°, so week two runs 5.4° cooler than week one. Around 1.0 inches of precipitation are expected over the 14 days, across 7 wet days. The nearest weekend, August 9: 89°, dry.

Week one vs week two

WeekHighLowPrecipitationVs normal
1st (August 9 – August 15)85.9°67.8°0.6 in / 4 d+0.8°
2nd (August 16 – August 22)80.5°64.2°0.4 in / 3 d-3.4°

Weekend weather

Sun, August 9
Mostly clear
89°73°
no precip.
Sat, August 15
Clear
83°59°
no precip.
Sun, August 16
Mostly clear
85°61°
no precip.
Sat, August 22
Mostly clear
83°58°
no precip.
Mon, 1093° / 73°0.13Rain
93 °Rain

Herndon, Monday, 10 August

Rain. High 93°, low 73°.

Pressure30.00 inHg
Wind6.5 mph NW
Humidity43%
Visibility6.2 mi
Dew point64°
Tue, 1189° / 68°0.3Rain
89 °Rain

Herndon, Tuesday, 11 August

Rain. High 89°, low 68°.

Pressure29.94 inHg
Wind7 mph NW
Humidity50%
Visibility6.2 mi
Dew point65°
Wed, 1292° / 71°0.11Light rain
92 °Light rain

Herndon, Wednesday, 12 August

Light rain. High 92°, low 71°.

Pressure29.77 inHg
Wind3.6 mph W
Humidity60%
Visibility6.2 mi
Dew point66°
Thu, 1384° / 70°0.05Light rain
84 °Light rain

Herndon, Thursday, 13 August

Light rain. High 84°, low 70°.

Pressure29.85 inHg
Wind12.4 mph NW
Humidity35%
Visibility—
Dew point52°
Fri, 1472° / 60°0Overcast
72 °Overcast

Herndon, Friday, 14 August

Overcast. High 72°, low 60°.

Pressure30.09 inHg
Wind7.3 mph NW
Humidity44%
Visibility—
Dew point48°
Sat, 1583° / 59°0Clear
83 °Clear

Herndon, Saturday, 15 August

Clear. High 83°, low 59°.

Pressure30.18 inHg
Wind8.1 mph N
Humidity32%
Visibility—
Dew point46°
Sun, 1685° / 61°0Mostly clear
85 °Mostly clear

Herndon, Sunday, 16 August

Mostly clear. High 85°, low 61°.

Pressure30.15 inHg
Wind7.4 mph SE
Humidity34%
Visibility—
Dew point51°
Mon, 1775° / 67°0.04Light rain
75 °Light rain

Herndon, Monday, 17 August

Light rain. High 75°, low 67°.

Pressure30.09 inHg
Wind12.7 mph S
Humidity65%
Visibility—
Dew point62°
Tue, 1875° / 66°0.08Light rain
75 °Light rain

Herndon, Tuesday, 18 August

Light rain. High 75°, low 66°.

Pressure30.03 inHg
Wind5 mph S
Humidity73%
Visibility—
Dew point65°
Wed, 1983° / 68°0.01Light rain
83 °Light rain

Herndon, Wednesday, 19 August

Light rain. High 83°, low 68°.

Pressure29.88 inHg
Wind9 mph S
Humidity57%
Visibility—
Dew point65°
Thu, 2081° / 68°0.24Light rain
81 °Light rain

Herndon, Thursday, 20 August

Light rain. High 81°, low 68°.

Pressure29.74 inHg
Wind15.4 mph NW
Humidity38%
Visibility—
Dew point51°
Fri, 2181° / 61°0Clear
81 °Clear

Herndon, Friday, 21 August

Clear. High 81°, low 61°.

Pressure29.91 inHg
Wind11.1 mph NW
Humidity30%
Visibility—
Dew point44°
Sat, 2283° / 58°0Mostly clear
83 °Mostly clear

Herndon, Saturday, 22 August

Mostly clear. High 83°, low 58°.

Pressure30.06 inHg
Wind6.9 mph SE
Humidity32%
Visibility—
Dew point47°

About this forecast

Can I plan a trip on a 2-week forecast?

Week one is solid for planning — accuracy is high. Week two shows the trend: go by the averages and the comparison with normal, and check the details closer to the date.

What does the "Vs normal" column mean?

It is the gap between the forecast and the climate normal for those same dates in Herndon, VA, computed over 60 years. A positive value means the week runs warmer than usual.

Why are weekends shown separately?

Saturday and Sunday plans are what people check most, so we give them their own cards with temperature and precipitation.