10-day forecast for Herndon, CA: 60° to 113°, with precipitation expected on 0 days. The table below breaks each day into morning, afternoon, evening and overnight.
113°
Best day: Monday, August 10
89°
Worst day: Saturday, August 15
Tap any day below to see morning, afternoon, evening and overnight.
Sun, 09108° / 74°0
Morning84°feels 81°
Afternoon107°feels 100°
Evening97°feels 91°
Overnight80°feels 80°
108 °
Herndon, Sunday, 9 August
Clear. High 108°, low 74°.
Pressure29.77 inHg
Wind4.1 mph NW
Humidity8%
Visibility6.2 mi
Dew point34°
Mon, 10113° / 75°0
Morning85°feels 82°
Afternoon108°feels 101°
Evening95°feels 90°
Overnight79°feels 79°
113 °
Herndon, Monday, 10 August
Clear. High 113°, low 75°.
Pressure29.80 inHg
Wind4.2 mph W
Humidity8%
Visibility6.2 mi
Dew point32°
Tue, 11110° / 73°0
Morning82°feels 80°
Afternoon108°feels 103°
Evening92°feels 88°
Overnight76°feels 74°
110 °
Herndon, Tuesday, 11 August
Overcast. High 110°, low 73°.
Pressure29.83 inHg
Wind1.7 mph NW
Humidity11%
Visibility6.2 mi
Dew point38°
Wed, 12105° / 73°0
Morning79°feels 79°
Afternoon104°feels 99°
Evening93°feels 88°
Overnight74°feels 72°
105 °
Herndon, Wednesday, 12 August
Partly cloudy. High 105°, low 73°.
Pressure29.77 inHg
Wind2.9 mph NW
Humidity12%
Visibility6.2 mi
Dew point38°
Thu, 13102° / 65°0
Morning80°feels 78°
Afternoon96°feels 91°
Evening83°feels 80°
Overnight70°feels 69°
102 °
Herndon, Thursday, 13 August
Clear. High 102°, low 65°.
Pressure29.74 inHg
Wind10 mph NW
Humidity12%
Visibility—
Dew point34°
Fri, 14100° / 61°0
Morning76°feels 74°
Afternoon95°feels 91°
Evening84°feels 81°
Overnight71°feels 70°
100 °
Herndon, Friday, 14 August
Clear. High 100°, low 61°.
Pressure29.85 inHg
Wind11.1 mph NW
Humidity15%
Visibility—
Dew point38°
Sat, 1589° / 61°0
Morning74°feels 72°
Afternoon87°feels 84°
Evening78°feels 77°
Overnight75°feels 74°
89 °
Herndon, Saturday, 15 August
Overcast. High 89°, low 61°.
Pressure29.94 inHg
Wind11.8 mph SE
Humidity21%
Visibility—
Dew point42°
Sun, 1698° / 68°0
Morning79°feels 77°
Afternoon93°feels 90°
Evening82°feels 80°
Overnight70°feels 69°
98 °
Herndon, Sunday, 16 August
Mostly clear. High 98°, low 68°.
Pressure29.97 inHg
Wind9.7 mph NW
Humidity22%
Visibility—
Dew point47°
Mon, 1797° / 60°0
Morning74°feels 72°
Afternoon92°feels 89°
Evening83°feels 81°
Overnight70°feels 69°
97 °
Herndon, Monday, 17 August
Clear. High 97°, low 60°.
Pressure29.97 inHg
Wind17.2 mph NW
Humidity19%
Visibility—
Dew point42°
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.