Mosquito season in Crawford County, IN: when it starts and ends
Mosquito months in Crawford County
In a normal year mosquito season in Crawford County, IN starts around April 3 and ends around October 31, about 30 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Crawford County, and when
- Start tipping out standing water weekly by March 20.
- Book any yard treatment for early April, ahead of the July peak.
- Repellent can go away after October 31.
- 1 West Nile case since 2016 (last 2019): you should use repellent at dusk June to August, more so if over 60.
Crawford County against the rest of IN
Crawford County has the 18th longest season of 92 IN counties, at 211 days against 231 in Floyd County and 177 in Steuben County. Its mean temperature is 56.2°F.
- Vigo County: April 1 to October 30 (212 days, 0 WNV)
- Switzerland County: April 4 to November 2 (212 days, 0 WNV)
- Washington County: April 4 to November 1 (211 days, 0 WNV)
- Harrison County: April 6 to November 2 (210 days, 0 WNV)
West Nile in Crawford County
From 1999 to 2025, CDC ArboNET counted 1 human West Nile case in Crawford County (1 neuroinvasive) across 1 year. The worst was 2019 with 1; the latest was 2019.
More: how the dates are worked out · when the season starts across the US.