Mosquito season in Martin County, IN: when it starts and ends
Mosquito months in Martin County
In a normal year mosquito season in Martin County, IN starts around April 2 and ends around November 2, about 31 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Martin County, and when
- Start tipping out standing water weekly by March 19.
- Book any yard treatment for early April, ahead of the July peak.
- Repellent can go away after November 2.
- No West Nile cases since 2016, so bites in Martin County are a nuisance; check window screens.
Martin County against the rest of IN
Martin County has the 14th longest season of 92 IN counties, at 214 days against 231 in Floyd County and 177 in Steuben County. Its mean temperature is 55.2°F.
- Knox County: April 1 to November 3 (216 days, 0 WNV)
- Sullivan County: April 1 to November 1 (214 days, 2 WNV)
- Gibson County: April 2 to November 1 (213 days, 0 WNV)
- Vigo County: April 1 to October 30 (212 days, 0 WNV)
West Nile in Martin County
CDC ArboNET lists no human West Nile cases for Martin County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 13 of those years.
More: how the dates are worked out · when mosquitoes go away for the winter.