Weather in Herndon, United States
Weather Advisories
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Tomorrow's weather summary
The weather in Herndon on Friday, May 31st, according to our forecast model, will be clear all day long.
Weather details for Herndon, on Friday, May 31st:
The maximum temperature during the day will be 74°F at about 5 pm. The day will have comfortable humidity, with average humidity of 48%, ranging from 29% to a maximum value of 67% at about 11 pm. The wind will be light, and will get up to 7 mph at 10 pm, blowing from the east. The sky will be clear of clouds along the day.
There is no probability for any precipitation throughout the day. The dew point will range from 35°F up to a maximum value of 52°F around 8 pm.
The visibility is expected to be good with average visibility of 10 mi throughout the day. Atmospheric pressure will be high with average pressure of 1023 hPa. Sunrise will be at 6:19 am, and sunset at 8:36 pm. The day will have 14 hours and 17 minutes of daylight.
Air quality forecast for Herndon, on Friday, May 31st:
On average, the air quality on this day will be good, meaning that air quality is satisfactory, and air pollution poses little or no risk. According to our index, ranging from 0 to 500, the air quality is going to be between values of 25 and 73.
Pollen forecast for Herndon, on Friday, May 31st:
Tree pollen on this day is expected to have very high risk. There's no risk of weed pollen, and as for grass pollen, this day is expected to have very high risk.
The weather in Herndon on Saturday, June 1st, will be cloudy for most of the day, together with clear skies before dawn.
There's seems to be also high probability of few clouds before dawn around 4 am.
Weather information for Herndon, on Saturday, June 1st:
The highest temperature during the day is going to be 82°F at about 5 pm. The day will have high relative humidity, with average humidity of 67%, ranging from 39% to a maximum value of 89% at about 7 am. The wind will be light, and will get up to 8 mph at 10 pm, blowing from the south-east. The cloud coverage will range from 0% around midnight to as high as 100% around 11 pm with an average of 73%.
There is no probability for any precipitation throughout the day. The dew point will range from 48°F up to a maximum value of 64°F around 7 pm.
The visibility is expected to be good with average visibility of 10 mi throughout the day. Atmospheric pressure will be high with average pressure of 1021 hPa. Sunrise will be at 6:19 am, and sunset at 8:37 pm. The day will have 14 hours and 18 minutes of daylight.
Air quality forecast for Herndon, on Saturday, June 1st:
On average, the air quality on this day will be good, meaning that air quality is satisfactory, and air pollution poses little or no risk. According to our index, ranging from 0 to 500, the air quality is going to be between values of 37 and 67.
Pollen forecast for Herndon, on Saturday, June 1st:
Tree pollen on this day is expected to have very high risk. There's no risk of weed pollen, and as for grass pollen, this day is expected to have very high risk.
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