The past week has been pretty chilly in the Captina watershed with highs in the upper 50's and lows in the 30's. The morning of October 20th marked the first official frost for the watershed as temperatures dipped into the mid and low 30's under clear skies and light winds. The first frost usually signals an end to the growing season and is a prelude for the next several months to come. The deeper valleys closer to the Ohio River may not have experienced the frost due to the heating capability of the river which tends to keep nightly temps slightly warmer than those on the ridgetops of the watershed at this time of the year.
The average first frost in Moundsville, West Virginia (located about 8 miles north of the mouth of Captina) is October 19th and the last frost date is April 30th. A pretty good correlation so far this year.
**Make sure you check out the new page I constructed on climatology statistics in the watershed. It is located in the "Pages" section of the right-hand margin. The only data I could find for the watershed (that was free) was for Barnesville located at the headwaters. Great information!