Some western governors, sharing the frustration of their southern colleagues that they are generally ignored by the candidates during the presidential primary season, agreed this week to consider establishing a Rocky Mountain states regional primary or caucus date similar to one proposed for the South.

This idea of Colorado Gov. Richard D. Lamm (D) has been endorsed by Democratic Govs. Toney Anaya of New Mexico and Ted Schwinden of Montana and by Republican Gov. William J. Janklow of South Dakota. The governors agreed to raise the proposal with their state party and legislative leaders. Their suggested 1988 primary or caucus date would be between late April and mid-May.

Lamm said delegates from seven Rocky Mountain states and Nevada would equal those of New York state and that a regional primary would force presidential candidates to address western concerns.

"We are politically irrelevant right now," he said. "They don't even dip their wings when they fly over us from Illinois to L.A."

P.S. The West Virginia House of Delegates last week defeated a bill to change its presidential primary date to March 8 to make the state part of the southern regional primary. The delegates objected to the estimated cost -- about $1 million -- and some contended that West Virginia is not a southern state.