10-day forecast for Herndon, CA: 45° to 70°, with precipitation expected on 2 days. The table below breaks each day into morning, afternoon, evening and overnight.
70°
Best day: Thursday, November 5
67° · 0.76 in
Worst day: Saturday, October 31
Tap any day below to see morning, afternoon, evening and overnight.
Fri, 3070° / 53°0
Morning54°feels 53°
Afternoon70°feels 68°
Evening56°feels 55°
Overnight54°feels 52°
70 °
Herndon, Friday, 30 October
Light rain. High 70°, low 53°.
Pressure29.88 inHg
Wind2.8 mph NW
Humidity45%
Visibility6.2 mi
Dew point47°
Sat, 3167° / 51°0.76
Morning54°feels 54°
Afternoon65°feels 65°
Evening57°feels 57°
Overnight51°feels 50°
67 °
Herndon, Saturday, 31 October
Rain. High 67°, low 51°.
Pressure29.94 inHg
Wind3.3 mph E
Humidity66%
Visibility6.2 mi
Dew point53°
Sun, 0165° / 51°0.52
Morning55°feels 55°
Afternoon65°feels 64°
Evening57°feels 55°
Overnight56°feels 56°
65 °
Herndon, Sunday, 1 November
Rain. High 65°, low 51°.
Pressure29.88 inHg
Wind8.7 mph NW
Humidity62%
Visibility6.2 mi
Dew point50°
Mon, 0266° / 45°0
Morning45°feels 45°
Afternoon60°feels 59°
Evening63°feels 62°
Overnight48°feels 48°
66 °
Herndon, Monday, 2 November
Partly cloudy. High 66°, low 45°.
Pressure30.15 inHg
Wind0.7 mph SE
Humidity63%
Visibility6.2 mi
Dew point48°
Tue, 0369° / 47°0
Morning52°feels 52°
Afternoon63°feels 62°
Evening65°feels 65°
Overnight53°feels 53°
69 °
Herndon, Tuesday, 3 November
Clear. High 69°, low 47°.
Pressure30.09 inHg
Wind3.9 mph NW
Humidity62%
Visibility—
Dew point47°
Wed, 0467° / 51°0.01
Morning54°feels 53°
Afternoon64°feels 62°
Evening65°feels 64°
Overnight57°feels 56°
67 °
Herndon, Wednesday, 4 November
Light rain. High 67°, low 51°.
Pressure29.88 inHg
Wind6.2 mph S
Humidity58%
Visibility—
Dew point46°
Thu, 0570° / 55°0
Morning58°feels 56°
Afternoon65°feels 64°
Evening66°feels 65°
Overnight57°feels 55°
70 °
Herndon, Thursday, 5 November
Overcast. High 70°, low 55°.
Pressure29.97 inHg
Wind14 mph NW
Humidity48%
Visibility—
Dew point43°
Fri, 0665° / 50°0
Morning54°feels 52°
Afternoon59°feels 57°
Evening63°feels 61°
Overnight53°feels 51°
65 °
Herndon, Friday, 6 November
Partly cloudy. High 65°, low 50°.
Pressure30.03 inHg
Wind15.3 mph NW
Humidity51%
Visibility—
Dew point39°
Sat, 0767° / 50°0
Morning53°feels 51°
Afternoon62°feels 59°
Evening65°feels 63°
Overnight56°feels 53°
67 °
Herndon, Saturday, 7 November
Clear. High 67°, low 50°.
Pressure30.12 inHg
Wind6.2 mph SE
Humidity40%
Visibility—
Dew point35°
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, CA 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.