Mosquito season in Hempstead County, AR: when it starts and ends
Mosquito months in Hempstead County
In a normal year mosquito season in Hempstead County, AR starts around March 11 and ends around November 17, about 36 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Hempstead County, and when
- Start tipping out standing water weekly by February 25.
- Book any yard treatment for mid March, ahead of the July peak.
- Repellent can go away after November 17.
- No West Nile cases since 2016, so bites in Hempstead County are a nuisance; check window screens.
Hempstead County against the rest of AR
Hempstead County has the 32nd longest season of 75 AR counties, at 251 days against 274 in Chicot County and 211 in Washington County. Its mean temperature is 62.4°F.
- Dallas County: March 10 to November 17 (252 days, 3 WNV)
- Mississippi County: March 11 to November 18 (252 days, 2 WNV)
- Sebastian County: March 11 to November 17 (251 days, 6 WNV)
- White County: March 12 to November 18 (251 days, 3 WNV)
West Nile in Hempstead County
From 1999 to 2025, CDC ArboNET counted 4 human West Nile cases in Hempstead County (2 neuroinvasive) across 2 years. The worst was 2012 with 3; the latest was 2012.
See how the dates are worked out, and when mosquitoes go away for the winter.