Three Rivers Trail is very far from the nearest big city and hiking is such a fun thing to do and this is a great place to do that. The annual rainfall here at Three Rivers Trail is about average. The month with most of the rain is June while January is the month with the least amount of precipitation. For the duration of the warm months at Three Rivers Trail temperatures are commonly in the 80's with overnight lows in the 60's. The winter brings highs down to the 20's, and overnight lows throughout the winter for Three Rivers Trail tend to be in the 0's.