5-day weather forecast for Mercersburg, Pennsylvania
Today
58°
78°
Mostly Sunny
Thursday
56°
81°
Mostly Sunny
Friday
61°
84°
Partly Sunny
Saturday
64°
86°
Slight Chance Thunderstorms
Sunday
68°
88°
Chance Thunderstorms
Click on a forecast to see the forecast trend for that day
Weather changeability for Hagerstown, Maryland
Unfortunately, there was not enough data for this station to provide meaningful weather changeability data.
Weather forecast accuracy for Hagerstown, Maryland
| AccuWeather | 71.55% |
| The Weather Channel | 70.11% |
| Intellicast | 70.11% |
| Weather Underground | 68.10% |
| NWS Digital Forecast | 65.52% |
| National Weather Service | 65.23% |
| CustomWeather | 64.08% |
| World Weather Online | 59.52% |
| Persistence | 41.38% |
| The Weather Channel | 75.13% |
| Intellicast | 75.13% |
| AccuWeather | 72.91% |
| National Weather Service | 70.20% |
| CustomWeather | 70.01% |
| NWS Digital Forecast | 68.39% |
| Persistence | 44.84% |
ForecastAdvisor Fact
4.6% of National Weather Service's low temperature forecasts for Hagerstown were exactly right last month.