Mosquito season in Floyd County, IN: when it starts and ends
Mosquito months in Floyd County
In a normal year mosquito season in Floyd County, IN starts around March 23 and ends around November 9, about 33 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Floyd County, and when
- Start tipping out standing water weekly by March 9.
- Book any yard treatment for late March, ahead of the July peak.
- Repellent can go away after November 9.
- 2 West Nile cases since 2016 (last 2023): you should use repellent at dusk June to September, more so if over 60.
Floyd County against the rest of IN
Floyd County has the 1st longest season of 92 IN counties, at 231 days against 231 in Floyd County and 177 in Steuben County. Its mean temperature is 58.2°F.
- Vanderburgh County: March 25 to November 8 (228 days, 17 WNV)
- Spencer County: March 26 to November 6 (225 days, 0 WNV)
West Nile in Floyd County
From 1999 to 2025, CDC ArboNET counted 6 human West Nile cases in Floyd County (4 neuroinvasive) across 6 years. The worst was 2023 with 1; the latest was 2023.
More: how the dates are worked out · when the season starts across the US.