Herndon Weather in April

April in Herndon brings pleasant temperatures, with highs of 19°C (66°F) and nights dropping to 7°C (45°F). Rainfall is on the higher side this month, averaging around 88 mm (3.5 in), so keep a rain jacket handy.

Rainfall in Herndon in April

Records from the past 30 years suggest around 12 days of rain, with 88 mm (3.5 in) average for the month. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Herndon in April

Expect highs of 19°C (66°F) in Herndon in April, with nights dropping to around 7°C (45°F). The difference between afternoon and evening temperatures is usually noticeable. Nights fall to 7°C (45°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.

Sunshine in Herndon in April

There are approximately 227 hours of sunshine this month, resulting in mostly clear days.

If you're a fan of comfortable temperatures and drier conditions, April is a great time to visit.

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Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Herndon's climate page.

Herndon Temperature in April

Min Temperature 7°C (45°F)  

Max Temperature 19°C (66°F)  

Chance of Rain 41%  

Precipitation 88 mm (3.5 in)  

Rainy days 12 days  

Humidity 58% *  

Sunshine 227 hours *  

Percentage Sunshine 57% *  

* Data from: Washington DC, the United States of America (33 KM, 20 Miles).

What to Wear in Herndon in April

Pleasant temperatures in April mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Herndon in April

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Cycling

9/10

Walking

9/10

Camping

4/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Herndon's climate page.

More climate data for Herndon

Temperature Rainfall Sunshine Humidity

See the full Herndon climate overview or explore weather in the United States of America.