Mosquito season in Lamar County, MS: when it starts and ends
Mosquito months in Lamar County
In a normal year mosquito season in Lamar County, MS starts around February 20 and ends around December 4, about 41 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Lamar County, and when
- Start tipping out standing water weekly by February 6.
- Book any yard treatment for mid February, ahead of the July peak.
- Repellent can go away after December 4.
- 6 West Nile cases since 2016 (last 2024): you should use repellent at dusk May to September, more so if over 60.
Lamar County against the rest of MS
Lamar County has the 15th longest season of 82 MS counties, at 287 days against 333 in Harrison County and 221 in Tishomingo County. Its mean temperature is 66.4°F.
- Humphreys County: February 19 to December 4 (287 days, 3 WNV)
- Forrest County: February 20 to December 4 (287 days, 18 WNV)
- Sharkey County: February 21 to December 5 (287 days, 0 WNV)
- Tallahatchie County: February 24 to November 29 (278 days, 0 WNV)
West Nile in Lamar County
From 1999 to 2025, CDC ArboNET counted 39 human West Nile cases in Lamar County (26 neuroinvasive) across 12 years. The worst was 2007 with 8; the latest was 2024.
More: how the dates are worked out · reading the West Nile counts.