5-day weather forecast for Clifton, Virginia
Today
66°
82°
Thunderstorms
Friday
60°
67°
Partly Sunny
Saturday
43°
71°
Mostly Sunny
Sunday
45°
72°
Slight Chance Rain Showers
Monday
57°
71°
Mostly Cloudy
Click on a forecast to see the forecast trend for that day
Weather changeability for Herndon, Virginia
| Temperature | Last Month | Last Year |
|---|---|---|
| Average change in high temperature day-to-day | 6.8° | 5.9° |
| Average change in low temperature day-to-day | 8.9° | 7.4° |
| Precipitation | Last Month | Last Year |
|---|---|---|
| Chance of dry day after a precip day | 43% | 55% |
| Chance of precip day after a dry day | 16% | 29% |
Weather forecast accuracy for Herndon, Virginia
| The Weather Channel | 72.02% |
| Intellicast | 72.02% |
| Weather Underground | 72.02% |
| National Weather Service | 70.24% |
| NWS Digital Forecast | 70.24% |
| AccuWeather | 69.05% |
| CustomWeather | 66.96% |
| World Weather Online | 60.80% |
| Persistence | 40.71% |
| National Weather Service | 72.96% |
| The Weather Channel | 72.48% |
| Intellicast | 72.48% |
| AccuWeather | 69.82% |
| NWS Digital Forecast | 68.98% |
| CustomWeather | 66.55% |
| Persistence | 42.57% |
ForecastAdvisor Fact
59.5% of NWS Digital Forecast's low temperature forecasts for Herndon were within 3 degrees of actual temperatures last month.