Mosquito season in Ringgold County, IA: when it starts and ends
Mosquito months in Ringgold County
In a normal year mosquito season in Ringgold County, IA starts around April 16 and ends around October 20, about 27 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Ringgold County, and when
- Start tipping out standing water weekly by April 2.
- Book any yard treatment for mid April, ahead of the July peak.
- Repellent can go away after October 20.
- No West Nile cases since 2016, so bites in Ringgold County are a nuisance; check window screens.
Ringgold County against the rest of IA
Ringgold County has the 24th longest season of 99 IA counties, at 187 days against 198 in Des Moines County and 160 in Worth County. Its mean temperature is 49.6°F.
- Wayne County: April 16 to October 20 (188 days, 2 WNV)
- Cedar County: April 16 to October 20 (187 days, 2 WNV)
- Appanoose County: April 17 to October 21 (187 days, 1 WNV)
- Linn County: April 17 to October 21 (187 days, 4 WNV)
West Nile in Ringgold County
From 1999 to 2025, CDC ArboNET counted 3 human West Nile cases in Ringgold County (2 neuroinvasive) across 3 years. The worst was 2015 with 1; the latest was 2015.
Background: when mosquitoes go away for the winter; how the dates are worked out.