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As of 20:16 EST

Weather in Herndon, PA

48°Current weather

Herndon, Sunday, 8 November, 20:16

Mostly clear. Feels like 48°. High 59°, low 47°.

Pressure29.83 inHg
Wind2 mph SW
Humidity64%
Visibility6.2 mi
Dew point36°

Two-week outlook for Herndon, PA: week one averages a high of 52.8° and week two 48.1°, so week two runs 4.7° cooler than week one. Around 0.9 inches of precipitation are expected over the 14 days, across 3 wet days. The nearest weekend, November 8: 59°, dry.

Week one vs week two

WeekHighLowPrecipitationVs normal
1st (November 8 – November 14)52.8°41°0.8 in / 2 d—
2nd (November 15 – November 21)48.1°38.6°0.1 in / 1 d—

Weekend weather

Sun, November 8
Partly cloudy
59°47°
no precip.
Sat, November 14
Light rain
43°34°
no precip.
Sun, November 15
Light rain
43°40°
0.02 in
Sat, November 21
Overcast
49°41°
no precip.
Mon, 0956° / 47°0Overcast
56 °Overcast

Herndon, Monday, 9 November

Overcast. High 56°, low 47°.

Pressure29.91 inHg
Wind17.1 mph NW
Humidity50%
Visibility6.2 mi
Dew point36°
Tue, 1062° / 43°0Mostly clear
62 °Mostly clear

Herndon, Tuesday, 10 November

Mostly clear. High 62°, low 43°.

Pressure29.91 inHg
Wind10 mph SW
Humidity54%
Visibility6.2 mi
Dew point42°
Wed, 1159° / 39°0Overcast
59 °Overcast

Herndon, Wednesday, 11 November

Overcast. High 59°, low 39°.

Pressure29.94 inHg
Wind5.8 mph W
Humidity56%
Visibility6.2 mi
Dew point42°
Thu, 1251° / 41°0.4Light rain
51 °Light rain

Herndon, Thursday, 12 November

Light rain. High 51°, low 41°.

Pressure29.59 inHg
Wind3.9 mph NE
Humidity90%
Visibility6.2 mi
Dew point48°
Fri, 1339° / 36°0.39Light rain
39 °Light rain

Herndon, Friday, 13 November

Light rain. High 39°, low 36°.

Pressure29.71 inHg
Wind12.4 mph N
Humidity98%
Visibility—
Dew point36°
Sat, 1443° / 34°0.01Light rain
43 °Light rain

Herndon, Saturday, 14 November

Light rain. High 43°, low 34°.

Pressure29.83 inHg
Wind14.1 mph NW
Humidity71%
Visibility—
Dew point31°
Sun, 1543° / 40°0.02Light rain
43 °Light rain

Herndon, Sunday, 15 November

Light rain. High 43°, low 40°.

Pressure29.77 inHg
Wind14.3 mph W
Humidity72%
Visibility—
Dew point35°
Mon, 1643° / 39°0.01Light rain
43 °Light rain

Herndon, Monday, 16 November

Light rain. High 43°, low 39°.

Pressure30.03 inHg
Wind10.8 mph NW
Humidity74%
Visibility—
Dew point34°
Tue, 1749° / 37°0Partly cloudy
49 °Partly cloudy

Herndon, Tuesday, 17 November

Partly cloudy. High 49°, low 37°.

Pressure30.36 inHg
Wind12.1 mph N
Humidity68%
Visibility—
Dew point34°
Wed, 1850° / 33°0Clear
50 °Clear

Herndon, Wednesday, 18 November

Clear. High 50°, low 33°.

Pressure30.30 inHg
Wind6.7 mph N
Humidity67%
Visibility—
Dew point32°
Thu, 1946° / 36°0.01Light rain
46 °Light rain

Herndon, Thursday, 19 November

Light rain. High 46°, low 36°.

Pressure30.30 inHg
Wind3.4 mph S
Humidity74%
Visibility—
Dew point35°
Fri, 2056° / 44°0.07Light rain
56 °Light rain

Herndon, Friday, 20 November

Light rain. High 56°, low 44°.

Pressure30.09 inHg
Wind8.7 mph W
Humidity94%
Visibility—
Dew point50°
Sat, 2149° / 41°0Overcast
49 °Overcast

Herndon, Saturday, 21 November

Overcast. High 49°, low 41°.

Pressure30.06 inHg
Wind6.6 mph W
Humidity82%
Visibility—
Dew point41°

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, PA, 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.