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As of 02:10 EDT

Weather in Herndon, PA

72°Current weather

Herndon, Sunday, 9 August, 02:10

Partly cloudy. Feels like 74°. High 86°, low 71°.

Pressure29.97 inHg
Wind2.6 mph SW
Humidity98%
Visibility6.2 mi
Dew point71°

10-day forecast for Herndon, PA: 54° to 90°, with precipitation expected on 2 days. The table below breaks each day into morning, afternoon, evening and overnight.

86°
Best day: Sunday, August 9
71°
Worst day: Monday, August 17

Tap any day below to see morning, afternoon, evening and overnight.

Mon, 1087° / 70°0.03Light rain
MorningPartly cloudy74°feels 74°
AfternoonOvercast83°feels 84°
EveningOvercast79°feels 79°
OvernightClear72°feels 72°
87 °Light rain

Herndon, Monday, 10 August

Light rain. High 87°, low 70°.

Pressure30.00 inHg
Wind3.7 mph SW
Humidity67%
Visibility6.2 mi
Dew point65°
Tue, 1190° / 69°0.06Light rain
MorningOvercast72°feels 73°
AfternoonOvercast89°feels 90°
EveningOvercast77°feels 78°
OvernightLight rain70°feels 72°
90 °Light rain

Herndon, Tuesday, 11 August

Light rain. High 90°, low 69°.

Pressure29.91 inHg
Wind6.1 mph NW
Humidity53%
Visibility6.2 mi
Dew point65°
Wed, 1285° / 68°0.11Light rain
MorningOvercast69°feels 71°
AfternoonOvercast85°feels 88°
EveningOvercast77°feels 77°
OvernightOvercast70°feels 71°
85 °Light rain

Herndon, Wednesday, 12 August

Light rain. High 85°, low 68°.

Pressure29.74 inHg
Wind7.5 mph NW
Humidity64%
Visibility6.2 mi
Dew point67°
Thu, 1380° / 60°0.01Light rain
MorningLight rain72°feels 72°
AfternoonLight rain78°feels 78°
EveningLight rain68°feels 67°
OvernightOvercast68°feels 69°
80 °Light rain

Herndon, Thursday, 13 August

Light rain. High 80°, low 60°.

Pressure29.83 inHg
Wind11.5 mph NW
Humidity31%
Visibility—
Dew point45°
Fri, 1479° / 54°0Clear
MorningClear65°feels 64°
AfternoonClear77°feels 76°
EveningClear68°feels 67°
OvernightClear60°feels 60°
79 °Clear

Herndon, Friday, 14 August

Clear. High 79°, low 54°.

Pressure30.03 inHg
Wind9.4 mph NW
Humidity34%
Visibility—
Dew point45°
Sat, 1580° / 54°0Clear
MorningClear65°feels 64°
AfternoonClear77°feels 77°
EveningClear66°feels 65°
OvernightClear60°feels 59°
80 °Clear

Herndon, Saturday, 15 August

Clear. High 80°, low 54°.

Pressure30.18 inHg
Wind10.5 mph N
Humidity34%
Visibility—
Dew point46°
Sun, 1680° / 54°0Overcast
MorningOvercast66°feels 65°
AfternoonOvercast78°feels 78°
EveningOvercast68°feels 67°
OvernightOvercast62°feels 62°
80 °Overcast

Herndon, Sunday, 16 August

Overcast. High 80°, low 54°.

Pressure30.18 inHg
Wind3.3 mph SE
Humidity38%
Visibility—
Dew point50°
Mon, 1771° / 60°0.02Light rain
MorningLight rain68°feels 68°
AfternoonLight rain70°feels 70°
EveningLight rain67°feels 67°
OvernightLight rain66°feels 67°
71 °Light rain

Herndon, Monday, 17 August

Light rain. High 71°, low 60°.

Pressure30.09 inHg
Wind8.3 mph S
Humidity70%
Visibility—
Dew point60°
Tue, 1869° / 65°0Overcast
MorningOvercast66°feels 67°
AfternoonOvercast67°feels 68°
EveningOvercast67°feels 68°
OvernightOvercast67°feels 67°
69 °Overcast

Herndon, Tuesday, 18 August

Overcast. High 69°, low 65°.

Pressure30.06 inHg
Wind4.9 mph SE
Humidity93%
Visibility—
Dew point65°

About this forecast

How reliable is a 10-day forecast?

The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.

What does the time-of-day table show?

Temperature in Herndon, PA around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.

How is the best day chosen?

We weigh the daytime high against precipitation: a warm, dry day scores highest.