Mosquito season in Humphreys County, MS: when it starts and ends
Mosquito months in Humphreys County
In a normal year mosquito season in Humphreys County, MS starts around February 19 and ends around December 4, about 41 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Humphreys County, and when
- Start tipping out standing water weekly by February 5.
- Book any yard treatment for mid February, ahead of the July peak.
- Repellent can go away after December 4.
- 3 West Nile cases since 2016 (last 2023): you should use repellent at dusk May to September, more so if over 60.
Humphreys County against the rest of MS
Humphreys County has the 13th longest season of 82 MS counties, at 287 days against 333 in Harrison County and 221 in Tishomingo County. Its mean temperature is 64.5°F.
- Marion County: February 19 to December 4 (288 days, 4 WNV)
- Issaquena County: February 21 to December 6 (288 days, 0 WNV)
- Forrest County: February 20 to December 4 (287 days, 18 WNV)
- Lamar County: February 20 to December 4 (287 days, 6 WNV)
West Nile in Humphreys County
From 1999 to 2025, CDC ArboNET counted 6 human West Nile cases in Humphreys County (6 neuroinvasive) across 4 years. The worst was 2017 with 2; the latest was 2023.
See how the dates are worked out, and when the season starts across the US.