Finally, hiking time is here again, and Mason-Dixon Trail in Harford County, Maryland is a good choice. Mason-Dixon Trail is a good location of typical precipitation. For the duration of July this area sees the most rain while February is regularly the driest month. All through the warmest time of the year highs here at Mason-Dixon Trail get into the 80's, and during the night it cools down to the 60's. The winter comes with highs in the 30's while Mason-Dixon Trail nighttime low temperatures throughout the wintertime are in the 20's.