Mosquito season in Meade County, SD: when it starts and ends
Mosquito months in Meade County
In a normal year mosquito season in Meade County, SD starts around May 6 and ends around October 3, about 21 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Meade County, and when
- Start tipping out standing water weekly by April 22.
- Book any yard treatment for early May, ahead of the July peak.
- Repellent can go away after October 3.
- 7 West Nile cases since 2016 (last 2025): you should use repellent at dusk July to August, more so if over 60.
Meade County against the rest of SD
Meade County has the 63rd longest season of 66 SD counties, at 150 days against 179 in Yankton County and 139 in Lawrence County. Its mean temperature is 45.1°F.
- McPherson County: May 4 to October 3 (152 days, 4 WNV)
- Harding County: May 5 to October 5 (152 days, 0 WNV)
- Hughes County: May 8 to October 2 (147 days, 24 WNV)
- Custer County: May 11 to October 4 (146 days, 0 WNV)
West Nile in Meade County
From 1999 to 2025, CDC ArboNET counted 56 human West Nile cases in Meade County (13 neuroinvasive) across 12 years. The worst was 2003 with 28; the latest was 2025.
See how the dates are worked out, and reading the West Nile counts.