Weather forecast for 10 days
Herndon, VA

Weather forecast for the weekend

Saturday, Jun 28.

PM Thunderstorms
5:45 am

8:40 pm
EDT
PM Thunderstorms
90°F / 72°F
  • Wind: 6mph SSW
  • Humidity: 73%
  • Precip. probability: 40%
  • Precipitation: 0.16"
  • UV index: 9
On Saturday, in Herndon, rainy weather and thunderstorms are expected in the afternoon.
The chance of rainfall is low, and light precipitation is anticipated. The temperature will vary between a maximum of a blazing 89.6°F and a minimum of a delightful 71.6°F.
On on Saturday, conditions will be hotter with a temperature more like July's typical high of 87.8°F.
Sunrise will be at 5:45 am and sunset at 8:40 pm; the daylight will last for 14h and 56min.

Sunday, Jun 29.

PM Thunderstorms
5:45 am

8:40 pm
EDT
PM Thunderstorms
90°F / 73°F
  • Wind: 4mph WNW
  • Humidity: 66%
  • Precip. probability: 40%
  • Precipitation: 0.16"
  • UV index: 8
On Sunday, June 29, unstable skies may bring rain, thunder, and brief gusts later today.
The likelihood of rainfall is low, and light precipitation is expected. The temperature will fluctuate from a high of a humid 89.6°F to a low of a moderately hot 73.4°F.
On Sunday, the expected high temperature of 89.6°F better resembles July's average maximum than June's usual.
Sunrise will be at 5:45 am and sunset at 8:40 pm; the daylight will last for 14h and 55min.

Frequently asked questions

What is the weather forecast for Herndon for Saturday?
On Saturday, in Herndon, stormy skies and lightning strikes are expected later today.
Will it rain on Saturday?
Light precipitation of 0.16" is forecasted on Saturday. The possibility of rainfall is 40%.
What will be the highest temperature on Saturday?
On Saturday, the maximum temperature will be 89.6°F, while the minimum temperature will be 71.6°F.
What is the weather forecast for Herndon for Sunday?
On Sunday, rumbling thunderstorms could affect the area later in the afternoon.
Will it rain on Sunday?
Light precipitation of 0.16" is anticipated on Sunday. The chance of rainfall is 40%.
What will be the highest temperature on Sunday?
On Sunday, the maximum temperature will be 89.6°F, while the minimum temperature will be 73.4°F.
What is the weather forecast for Herndon for the next ten days?
In Herndon, a combination of turbulent, cloudy and sun-filled weather is forecasted for the next ten days.
Will it rain in the next ten days?
Rainfall is anticipated on Thursday through next Tuesday in Herndon. With light precipitation of 0.28", Thursday will be the day with the most rainfall.
How hot will it be in the next ten days?
The maximum temperature will vary between 82.4°F and 98.6°F, while the minimum temperature will be between 68°F and 77°F.
Including the humidity's impact, the maximum feel-like temperature will range between 89.6°F and 122°F.
What will be the hottest and the coldest days?
With a maximum temperature of 98.6°F, Tuesday and Wednesday will be the hottest days. With a maximum temperature of 82.4°F, Friday will be the coldest day.

Long-term weather forecast

TueJun 24.
  • 99°F
  • 77°F
Sunny
Sunny
  • Wind: 7mph NW
  • Humidity: 57%
  • UV index: 9
  • Precip. probability: 2%
  • Precipitation: 0"
  • 5:43 am 8:40 pm EDT
WedJun 25.
  • 99°F
  • 75°F
Partly Cloudy
Partly Cloudy
  • Wind: 7mph NW
  • Humidity: 53%
  • UV index: 9
  • Precip. probability: 20%
  • Precipitation: 0"
  • 5:43 am 8:40 pm EDT
ThuJun 26.
  • 93°F
  • 72°F
PM Thunderstorms
PM Thunderstorms
  • Wind: 7mph N
  • Humidity: 64%
  • UV index: 9
  • Precip. probability: 62%
  • Precipitation: 0.28"
  • 5:44 am 8:40 pm EDT
FriJun 27.
  • 82°F
  • 70°F
Isolated Thunderstorms
Isolated Thunderstorms
  • Wind: 7mph ESE
  • Humidity: 81%
  • UV index: 6
  • Precip. probability: 33%
  • Precipitation: 0.2"
  • 5:44 am 8:40 pm EDT
SatJun 28.
  • 90°F
  • 72°F
PM Thunderstorms
PM Thunderstorms
  • Wind: 6mph SSW
  • Humidity: 73%
  • UV index: 9
  • Precip. probability: 40%
  • Precipitation: 0.16"
  • 5:45 am 8:40 pm EDT
SunJun 29.
  • 90°F
  • 73°F
PM Thunderstorms
PM Thunderstorms
  • Wind: 4mph WNW
  • Humidity: 66%
  • UV index: 8
  • Precip. probability: 40%
  • Precipitation: 0.16"
  • 5:45 am 8:40 pm EDT
MonJun 30.
  • 90°F
  • 73°F
PM Thunderstorms
PM Thunderstorms
  • Wind: 6mph SSW
  • Humidity: 69%
  • UV index: 9
  • Precip. probability: 53%
  • Precipitation: 0.2"
  • 5:45 am 8:40 pm EDT
TueJul 1.
  • 91°F
  • 70°F
PM Thunderstorms
PM Thunderstorms
  • Wind: 7mph WSW
  • Humidity: 69%
  • UV index: 9
  • Precip. probability: 53%
  • Precipitation: 0.24"
  • 5:46 am 8:40 pm EDT
WedJul 2.
  • 88°F
  • 68°F
Partly Cloudy
Partly Cloudy
  • Wind: 7mph NW
  • Humidity: 62%
  • UV index: 10
  • Precip. probability: 13%
  • Precipitation: 0"
  • 5:46 am 8:40 pm EDT
ThuJul 3.
  • 86°F
  • 68°F
Partly Cloudy
Partly Cloudy
  • Wind: 6mph NW
  • Humidity: 55%
  • UV index: 10
  • Precip. probability: 14%
  • Precipitation: 0"
  • 5:47 am 8:40 pm EDT
thunderstorm-prone, overcast and dry and sunny weather is predicted.
Rainfall is anticipated on Thursday through next Tuesday.
Temperature fluctuation will be noticeable in the next ten days. Forecast highs will fluctuate between 82.4°F and 98.6°F, while the minimum temperature is forecast to range between 68°F and 77°F.
Tuesday and Wednesday, with the highest temperature of 98.6°F, will be the hottest days; the coldest day will be Friday, with a maximum of 82.4°F.
Including the humidity's impact, the maximum feel-like temperature may increase vastly and range between a tropical 89.6°F and a searing 122°F.
Updated: Jun 24, 2025 @ 09:03:24 UTC
Published by: Weather U.S. | About Us
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