Mosquito season in Fountain County, IN: when it starts and ends
Mosquito months in Fountain County
In a normal year mosquito season in Fountain County, IN starts around April 12 and ends around October 25, about 28 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Fountain County, and when
- Start tipping out standing water weekly by March 29.
- Book any yard treatment for mid April, ahead of the July peak.
- Repellent can go away after October 25.
- No West Nile cases since 2016, so bites in Fountain County are a nuisance; check window screens.
Fountain County against the rest of IN
Fountain County has the 48th longest season of 92 IN counties, at 196 days against 231 in Floyd County and 177 in Steuben County. Its mean temperature is 51.4°F.
- Rush County: April 11 to October 25 (197 days, 0 WNV)
- Blackford County: April 12 to October 26 (196 days, 0 WNV)
- Johnson County: April 12 to October 24 (196 days, 2 WNV)
- Morgan County: April 12 to October 25 (196 days, 2 WNV)
West Nile in Fountain County
From 1999 to 2025, CDC ArboNET counted 1 human West Nile case in Fountain County (0 neuroinvasive) across 1 year. The worst was 2002 with 1; the latest was 2002.
See how the dates are worked out, and when the season starts across the US.