Weather forecast for tomorrowHerndon, VA
Weather forecast for tomorrow
Sunday Oct 18, 2026
- 61°F
- 37°F
Sunny
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 6mphNNE 12°
- Humidity: 45%
- UV index: 5
- Sunrise: 7:22 am EDT
- Sunset: 6:27 pm EDT
- details ▼
Tomorrow, on Sunday, October 18, skies will stay clear and sunny.
The temperature is anticipated to vary between a comfortable 60.8°F and a cold 37.4°F.
The forecasted temperature is moderately lower than October's regular maximum of 66°F.
Sunrise will be at 7:22 am and sunset at 6:27 pm; tomorrow's daylight will last for 11h and 5min.
The temperature is anticipated to vary between a comfortable 60.8°F and a cold 37.4°F.
The forecasted temperature is moderately lower than October's regular maximum of 66°F.
Sunrise will be at 7:22 am and sunset at 6:27 pm; tomorrow's daylight will last for 11h and 5min.
Hourly overview
Hourly temperatures
Warmest hour: 3 pm 59°C.
Coldest hour: 6 am 37°C.
Coldest hour: 6 am 37°C.
Chance of precipitation
Highest chance: 6 am 3%.
Hourly weather forecast
- 12 am
- 43°F
- Feels like:39°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 6mphN 353°
- Humidity: 63%
- Pressure: 30.45"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 2 am
- 41°F
- Feels like:37°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 5mphN 0°
- Humidity: 70%
- Pressure: 30.47"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 4 am
- 39°F
- Feels like:34°F
Clear
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 5mphN 2°
- Humidity: 72%
- Pressure: 30.5"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 6 am
- 37°F
- Feels like:34°F
Clear
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 5mphN 0°
- Humidity: 73%
- Pressure: 30.53"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunrise: 7:22 am
- 8 am
- 37°F
- Feels like:34°F
Sunny
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 5mphN 350°
- Humidity: 73%
- Pressure: 30.56"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 am
- 46°F
- Feels like:43°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 6mphN 0°
- Humidity: 55%
- Pressure: 30.59"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 12 pm
- 54°F
- Feels like:52°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 6mphNNE 20°
- Humidity: 35%
- Pressure: 30.56"Hg
- Visibility: 10mi
- UV index: 4
- details ▼
- 2 pm
- 59°F
- Feels like:57°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 6mphNNE 25°
- Humidity: 30%
- Pressure: 30.53"Hg
- Visibility: 10mi
- UV index: 4
- details ▼
- 4 pm
- 59°F
- Feels like:59°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 6mphNNE 17°
- Humidity: 32%
- Pressure: 30.5"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 6 pm
- 57°F
- Feels like:55°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 5mphNNE 23°
- Humidity: 41%
- Pressure: 30.5"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:27 pm
- 8 pm
- 50°F
- Feels like:50°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 2mphNE 41°
- Humidity: 56%
- Pressure: 30.5"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 46°F
- Feels like:46°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 2mphNNE 27°
- Humidity: 67%
- Pressure: 30.5"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Tomorrow, on Sunday, bright skies and dry conditions are anticipated.
The temperature will vary between the lowest temperature of 37.4°F and the highest temperature of 59°F. The warmest part of the day will be from 2 pm to 5 pm.
The high will be a few degrees lower than the normal maximum of 66°F for October. The minimum temperature tomorrow will be more alike with November's average low of 37.8°F than October's average of 49.1°F.
The temperature will vary between the lowest temperature of 37.4°F and the highest temperature of 59°F. The warmest part of the day will be from 2 pm to 5 pm.
The high will be a few degrees lower than the normal maximum of 66°F for October. The minimum temperature tomorrow will be more alike with November's average low of 37.8°F than October's average of 49.1°F.
Updated: Oct 17, 2026 @ 16:40:09 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
On Sunday, clear skies and sunshine are anticipated.
Tomorrow, the highest temperature will be 60.8°F, while the lowest temperature will be 37.4°F.
The maximum temperature tomorrow will be moderately lower than the average highest temperature in October. The lowest temperature tomorrow will be notably lower than the average low of 49.1°F.
The maximum temperature tomorrow will be moderately lower than the average highest temperature in October. The lowest temperature tomorrow will be notably lower than the average low of 49.1°F.
On Sunday, in Herndon, sunrise will be at 7:22 am and sunset at 6:27 pm (EDT).
In Herndon, the length of the day tomorrow will be 11h and 5min.
