# Hourly weather Location Herndon, 20170, Virginia, United States · as of 9:13 pm GMT-4 The wind speed over the next few hours will be similar to the same time yesterday ## Friday 14 August | Time | Temperature | Condition | Rain Drop | Humidity | Wind | Precipitation | |--------|-------------|------------------|-----------|----------|------------|---------------| | 21:15 | 77° | Mostly Cloudy Night | 3% | 81% | 4mph NNW | 0in | | 21:30 | 76° | Mostly Cloudy Night | 3% | 82% | 4mph NNW | 0in | | 21:45 | 76° | Mostly Cloudy Night | 7% | 83% | 4mph NNW | 0in | | 22:00 | 76° | Partly Cloudy Night | 5% | 84% | 4mph NNW | 0in | | 22:15 | 76° | Partly Cloudy Night | 3% | 85% | 4mph NNW | 0in | | 23:00 | 75° | Partly Cloudy Night | 3% | 88% | 4mph NNW | 0in | ## Saturday 15 August | Time | Temperature | Condition | Rain Drop | Humidity | Wind | Precipitation | |--------|-------------|------------------|-----------|----------|------------|---------------| | 0:00 | 74° | Partly Cloudy Night | 4% | 90% | 3mph NNW | 0in | | 1:00 | 72° | Partly Cloudy Night | 4% | 97% | 3mph NNW | 0in | | 2:00 | 72° | Partly Cloudy Night | 3% | 97% | 3mph NNW | 0in | | 3:00 | 71° | Partly Cloudy Night | 3% | 98% | 3mph NNW | 0in | | 4:00 | 70° | Partly Cloudy Night | 5% | 99% | 4mph NNW | 0in | | 5:00 | 70° | Partly Cloudy Night | 8% | 95% | 4mph NNW | 0in | | 6:00 | 70° | Partly Cloudy Night | 7% | 93% | 4mph NNW | 0in | | 7:00 | 70° | Partly Cloudy Day | 7% | 94% | 4mph NNW | 0in | | 8:00 | 73° | Partly Cloudy Day | 6% | 86% | 4mph NNW | 0in | | 9:00 | 75° | Partly Cloudy Day | 4% | 78% | 5mph NNW | 0in | | 10:00 | 78° | Mostly Clear Day | 2% | 70% | 4mph NNW | 0in | | 11:00 | 81° | Mostly Clear Day | 1% | 63% | 4mph NNW | 0in | | 12:00 | 83° | Partly Cloudy Day | 1% | 58% | 4mph NNW | 0in | | 13:00 | 84° | Partly Cloudy Day | 4% | 56% | 4mph NNW | 0in | | 14:00 | 85° | Partly Cloudy Day | 3% | 55% | 4mph NNW | 0in | | 15:00 | 86° | Partly Cloudy Day | 0% | 54% | 4mph NNW | 0in | | 16:00 | 86° | Mostly Cloudy Day | 0% | 53% | 4mph NNW | 0in | | 17:00 | 85° | Partly Cloudy Day | 0% | 55% | 5mph NNW | 0in | | 18:00 | 84° | Mostly Cloudy Day | 0% | 56% | 5mph NNW | 0in | | 19:00 | 83° | Mostly Cloudy Day | 1% | 59% | 6mph NNW | 0in | | 20:00 | 80° | Mostly Cloudy Day | 2% | 64% | 4mph NNW | 0in | | 21:00 | 79° | Mostly Cloudy Night | 2% | 67% | 3mph NNW | 0in | | 22:00 | 77° | Mostly Cloudy Night | 2% | 73% | 4mph NNW | 0in | | 23:00 | 76° | Mostly Cloudy Night | 6% | 77% | 5mph NNW | 0in | ## Sunday 16 August | Time | Temperature | Condition | Rain Drop | Humidity | Wind | Precipitation | |--------|-------------|------------------|-----------|----------|------------|---------------| | 0:00 | 76° | Cloudy | 9% | 80% | 4mph NNW | 0in | | 1:00 | 75° | Cloudy | 9% | 83% | 4mph NNW | 0in | | 2:00 | 75° | Mostly Cloudy Night | 12% | 84% | 5mph NNW | 0in | | 3:00 | 75° | Mostly Cloudy Night | 9% | 88% | 5mph NNW | 0in | | 4:00 | 75° | Mostly Cloudy Night | 12% | 88% | 5mph NNW | 0in | | 5:00 | 74° | Cloudy | 11% | 89% | 6mph NNW | 0in | | 6:00 | 74° | Cloudy | 22% | 90% | 6mph NNW | 0in | | 7:00 | 74° | Showers | 31% | 92% | 7mph NNW | 0.01in | | 8:00 | 75° | Rain | 62% | 91% | 8mph NNW | 0.04in | | 9:00 | 75° | Showers | 60% | 89% | 9mph NNW | 0.02in | | 10:00 | 76° | Thunderstorms | 76% | 88% | 9mph NNW | 0.04in | | 11:00 | 76° | Thunderstorms | 66% | 89% | 10mph NNW | 0.04in | | 12:00 | 77° | Thunderstorms | 62% | 89% | 10mph NNW | 0.05in | | 13:00 | 77° | Thunderstorms | 89% | 93% | 11mph NNW | 0.12in | | 14:00 | 77° | Scattered Thunderstorms | 57% | 94% | 10mph NNW | 0.04in | | 15:00 | 79° | Scattered Thunderstorms | 58% | 86% | 10mph NNW | 0.03in | | 16:00 | 80° | Thunderstorms | 80% | 84% | 8mph NNW | 0.04in | | 17:00 | 80° | Thunderstorms | 79% | 87% | 9mph NNW | 0.13in | | 18:00 | 81° | Scattered Thunderstorms | 53% | 84% | 9mph NNW | 0.04in | | 19:00 | 80° | Scattered Thunderstorms | 38% | 85% | 9mph NNW | 0.01in | | 20:00 | 79° | Mostly Cloudy Day | 24% | 90% | 7mph NNW | 0in | | 21:00 | 78° | Scattered Thunderstorms Night | 33% | 90% | 6mph NNW | 0.01in | ## Air Quality Index 3 — Low Enjoy your usual outdoor activities. [See details](/content/en-GB/forecast/air-quality/l/38.97,-77.386) ## Health & Activities Grass pollen is moderate in your area.