Mosquito season in Yazoo County, MS: when it starts and ends
Mosquito months in Yazoo County
In a normal year mosquito season in Yazoo County, MS starts around February 15 and ends around December 13, about 43 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Yazoo County, and when
- Start tipping out standing water weekly by February 1.
- Book any yard treatment for mid February, ahead of the July peak.
- Repellent can go away after December 13.
- 4 West Nile cases since 2016 (last 2024): you should use repellent at dusk May to September, more so if over 60.
Yazoo County against the rest of MS
Yazoo County has the 7th longest season of 82 MS counties, at 301 days against 333 in Harrison County and 221 in Tishomingo County. Its mean temperature is 66.4°F.
- Pike County: February 25 to January 1 (310 days, 2 WNV)
- George County: February 13 to December 14 (304 days, 0 WNV)
- Warren County: February 8 to December 4 (299 days, 1 WNV)
- Jackson County: February 12 to December 8 (299 days, 11 WNV)
West Nile in Yazoo County
From 1999 to 2025, CDC ArboNET counted 19 human West Nile cases in Yazoo County (13 neuroinvasive) across 10 years. The worst was 2012 with 7; the latest was 2024.
See how the dates are worked out, and reading the West Nile counts.