Mosquito season in Warrick County, IN: when it starts and ends
Mosquito months in Warrick County
In a normal year mosquito season in Warrick County, IN starts around March 30 and ends around November 3, about 31 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Warrick County, and when
- Start tipping out standing water weekly by March 16.
- Book any yard treatment for late March, ahead of the July peak.
- Repellent can go away after November 3.
- 1 West Nile case since 2016 (last 2024): you should use repellent at dusk June to September, more so if over 60.
Warrick County against the rest of IN
Warrick County has the 7th longest season of 92 IN counties, at 218 days against 231 in Floyd County and 177 in Steuben County. Its mean temperature is 57.3°F.
- Posey County: March 30 to November 5 (220 days, 0 WNV)
- Daviess County: March 30 to November 4 (219 days, 0 WNV)
- Dubois County: March 31 to November 4 (218 days, 1 WNV)
- Jefferson County: March 31 to November 4 (218 days, 2 WNV)
West Nile in Warrick County
From 1999 to 2025, CDC ArboNET counted 3 human West Nile cases in Warrick County (2 neuroinvasive) across 3 years. The worst was 2024 with 1; the latest was 2024.
More: how the dates are worked out · when mosquitoes go away for the winter.