Mosquito season in Lee County, MS: when it starts and ends
Mosquito months in Lee County
In a normal year mosquito season in Lee County, MS starts around March 7 and ends around November 22, about 37 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Lee County, and when
- Start tipping out standing water weekly by February 21.
- Book any yard treatment for early March, ahead of the July peak.
- Repellent can go away after November 22.
- 8 West Nile cases since 2016 (last 2025): you should use repellent at dusk May to September, more so if over 60.
Lee County against the rest of MS
Lee County has the 53rd longest season of 82 MS counties, at 260 days against 333 in Harrison County and 221 in Tishomingo County. Its mean temperature is 62.9°F.
- Quitman County: March 5 to November 20 (260 days, 0 WNV)
- Clay County: March 7 to November 22 (260 days, 2 WNV)
- Oktibbeha County: March 7 to November 22 (260 days, 3 WNV)
- Amite County: March 6 to November 20 (259 days, 0 WNV)
West Nile in Lee County
From 1999 to 2025, CDC ArboNET counted 14 human West Nile cases in Lee County (8 neuroinvasive) across 9 years. The worst was 2017 with 3; the latest was 2025.
More: how the dates are worked out · reading the West Nile counts.