Mosquito season in Daviess County, IN: when it starts and ends
Mosquito months in Daviess County
In a normal year mosquito season in Daviess County, IN starts around March 30 and ends around November 4, about 31 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Daviess 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 4.
- No West Nile cases since 2016, so bites in Daviess County are a nuisance; check window screens.
Daviess County against the rest of IN
Daviess County has the 6th longest season of 92 IN counties, at 219 days against 231 in Floyd County and 177 in Steuben County. Its mean temperature is 56.1°F.
- Clark County: March 26 to November 6 (224 days, 4 WNV)
- Posey County: March 30 to November 5 (220 days, 0 WNV)
- Warrick County: March 30 to November 3 (218 days, 1 WNV)
- Dubois County: March 31 to November 4 (218 days, 1 WNV)
West Nile in Daviess County
From 1999 to 2025, CDC ArboNET counted 2 human West Nile cases in Daviess County (1 neuroinvasive) across 1 year. The worst was 2002 with 2; the latest was 2002.
Background: when mosquitoes go away for the winter; how the dates are worked out.