| Blairton | |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | West Virginia#USA |
| Pushpin Label Position: | left |
| Pushpin Map Caption: | Location within the state of West Virginia |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | West Virginia |
| Subdivision Type2: | County |
| Subdivision Name2: | Berkeley |
| Unit Pref: | Imperial |
| Population As Of: | 2000 |
| Population Density Km2: | auto |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 436 |
| Coordinates: | 39.4525°N -77.9203°W |
| Postal Code Type: | ZIP codes |
| Blank Name: | FIPS code |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 1553922 |
Blairton is an unincorporated community on Opequon Creek located east of Martinsburg in Berkeley County, West Virginia, United States. Blairton was originally named Opequan Station because of its location on the Opequon along the railroad.
Blairton lies in the transition zone between humid subtropical (Köppen Cfa) and humid continental climatic zones (Köppen Dfa), with four distinct seasons. Winters are cool to cold, with a January daily mean temperature of 30.9 °F (−0.6 °C) and an average seasonal snowfall of 26.6 inches (68 cm), while summers are hot and humid with a July daily mean temperature of 74.7 °F (23.7 °C) and 27 days of 90 °F (32 °C)+ readings annually. Precipitation is moderate, with winter being the driest period and May thru July the wettest. Extreme temperatures range from −18 °F (−28 °C) on January 21, 1994 up to 112 °F (44 °C) on July 11, 1936.