Herndon, VA Hourly Weather
Hour-by-Hour Forecast
Today's Weather Breakdown
Currently 73°F and clear. Today in Herndon, VA: high of 76°F, low of 50°F with rain, partially cloudy. 93% chance of rain.
| Currently | 73°F · Clear |
| Today's High | 76°F |
| Today's Low | 50°F |
| Rain Chance | 93% |
Hour-by-Hour Temperature & Rain Probability
In Herndon, VA today, temperatures start near 50°F in the early morning and climb toward a high of 76°F in the afternoon. Rain probability climbs through the day, reaching around 93%. The afternoon hours carry the highest precipitation risk — bring an umbrella if you plan to be outside.
Reading the Hourly Weather Forecast
The hour-by-hour table shows temperature, feels-like temperature, precipitation probability, wind speed, humidity, and UV index for each hour of the day in Herndon. Rain probability above 40% for a given hour indicates a meaningful chance of precipitation during that window. UV index above 6 means sun protection is recommended for extended time outdoors.
Hourly forecasts are updated from live weather station data. For the full multi-day picture, see the Herndon 10-day forecast or check tomorrow's rain forecast for precipitation timing.
Hour-by-Hour Forecast for Herndon, VA
| Time | Temp | Feels Like | Rain | Conditions |
|---|---|---|---|---|
| 12:00 AM | 76°F | 76°F | 0% | Partially cloudy |
| 1:00 AM | 74°F | 74°F | 0% | Partially cloudy |
| 2:00 AM | 74°F | 74°F | 0% | Partially cloudy |
| 3:00 AM | 73°F | 73°F | 0% | Partially cloudy |
| 4:00 AM | 69°F | 69°F | 16% | Partially cloudy |
| 5:00 AM | 68°F | 68°F | 22% | Partially cloudy |
| 6:00 AM | 64°F | 64°F | 26% | Partially cloudy |
| 7:00 AM | 68°F | 68°F | 38% | Partially cloudy |
| 8:00 AM | 70°F | 70°F | 35% | Partially cloudy |
| 9:00 AM | 70°F | 70°F | 48% | Rain, Partially cloudy |
| 10:00 AM | 70°F | 70°F | 71% | Rain, Partially cloudy |
| 11:00 AM | 70°F | 70°F | 93% | Rain, Overcast |
| 12:00 PM | 67°F | 67°F | 92% | Rain, Overcast |
| 1:00 PM | 65°F | 65°F | 69% | Rain, Overcast |
| 2:00 PM | 65°F | 65°F | 49% | Rain, Overcast |
| 3:00 PM | 63°F | 63°F | 24% | Partially cloudy |
| 4:00 PM | 63°F | 63°F | 10% | Partially cloudy |
| 5:00 PM | 64°F | 64°F | 2% | Partially cloudy |
| 6:00 PM | 62°F | 62°F | 0% | Partially cloudy |
| 7:00 PM | 60°F | 60°F | 0% | Partially cloudy |
| 8:00 PM | 57°F | 57°F | 6% | Partially cloudy |
| 9:00 PM | 54°F | 54°F | 6% | Partially cloudy |
| 10:00 PM | 51°F | 51°F | 6% | Partially cloudy |
| 11:00 PM | 50°F | 46°F | 6% | Partially cloudy |
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