Spending too much time indoors got you down? No problem, Pioneer Trail in Grundy County, Iowa is the outdoors at it's best. Iowa has lots of outdoors activities. A normal amount of rain falls here at Pioneer Trail. July is the wettest month with most rain while January is the month with the least amount of precipitation. High temperatures at Pioneer Trail during the summertime are in the 80's. Throughout the dark hours of summer temperatures sink down into the
60's. The cold days of the winter come with highs in the 20's; winter nights come with lows in the 0's to Pioneer Trail.