Weather forecast for todayHerndon, PA

Weather forecast for today

Current condition 12:23 am EDT

  • 48°F
  • Feels like:
    46°F
Clear
Clear
  • Precipitation: 0"
  • Wind: 4mphNNW 330°
  • Humidity: 69%
  • Dewpoint: 37°F
  • Pressure: 30.3"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
In Herndon, at the moment, a cloudless sky and calm conditions create ideal weather.
The temperature is a frosty 48.2°F, and the apparent temperature is almost the same at 46.4°F. The current temperature is relatively far from the maximum of 64.4°F predicted for today.

Wednesday Oct 21, 2026

  • 64°F
  • 36°F
Sunny
Sunny
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 6mphN 1°
  • Humidity: 58%
  • UV index: 4
  • Sunrise: 7:25 am EDT
  • Sunset: 6:18 pm EDT
  • ▼
Today, in Herndon, sunshine will likely continue with scattered clouds at most.
Substantial temperature fluctuations from a high of an enjoyable 64.4°F to a low of an icy 35.6°F are expected.
The forecasted maximum temperature will closely reflect October's average high of 61.3°F.
Sunrise will be at 7:25 am and sunset at 6:18 pm; the daylight will last for 10h and 53min.

Hourly overview

Hourly temperatures

Warmest hour: 4 pm 63°C.
Coldest hour: 7 am 36°C.

Chance of precipitation

Highest chance: 7 am 4%.

Hourly weather forecast

  • 2 am
  • 45°F
  • Feels like:
    43°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 4mphN 0°
  • Humidity: 76%
  • Pressure: 30.3"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 39°F
  • Feels like:
    39°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 2mphN 351°
  • Humidity: 92%
  • Pressure: 30.3"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 37°F
  • Feels like:
    37°F
Clear
Clear
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 2mphN 354°
  • Humidity: 95%
  • Pressure: 30.3"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:25 am
  • 8 am
  • 36°F
  • Feels like:
    36°F
Sunny
Sunny
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 2mphN 358°
  • Humidity: 95%
  • Pressure: 30.3"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 46°F
  • Feels like:
    45°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 4mphNNE 15°
  • Humidity: 71%
  • Pressure: 30.3"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 12 pm
  • 55°F
  • Feels like:
    54°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphN 0°
  • Humidity: 51%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 2 pm
  • 61°F
  • Feels like:
    61°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphN 0°
  • Humidity: 39%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 4 pm
  • 63°F
  • Feels like:
    63°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphN 354°
  • Humidity: 36%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 57°F
  • Feels like:
    57°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphN 352°
  • Humidity: 43%
  • Pressure: 30.12"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:18 pm
  • 8 pm
  • 48°F
  • Feels like:
    48°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 3mphN 358°
  • Humidity: 63%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 45°F
  • Feels like:
    43°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 4mphNNW 348°
  • Humidity: 73%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Today, in Herndon, sunny conditions are likely to prevail.
The temperature will be between a minimum of 35.6°F and a maximum of 62.6°F. The warmest part of the day will be from 3 pm to 5 pm.
The highest temperature will be comparable to October's average maximum of 61.3°F. The expected low will be more consistent with what’s common in November than the current October average of 44.2°F.
Updated: Oct 21, 2026 @ 04:23:19 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

The current temperature (12:23 am EDT) is 48.2°F.

On Wednesday, skies will stay clear and sunny.

Today, the maximum temperature will be 64.4°F, while the minimum temperature will be 35.6°F.
The highest temperature will be in line with the average maximum of 61.3°F in October. The lowest temperature will be a couple of degrees lower than the average low of 44.2°F.

On Wednesday, in Herndon, sunrise will be at 7:25 am and sunset at 6:18 pm (EDT).

Today, the daylight will last for 10h and 53min.