Mosquito season in Howard County, AR: when it starts and ends

Mosquito months in Howard County

In a normal year mosquito season in Howard County, AR starts around March 10 and ends around November 21, about 37 weeks.

1. Jan
2. Feb
3. Mar
4. Apr
5. May
6. Jun
7. Jul
8. Aug
9. Sep
10. Oct
11. Nov
12. Dec

What to do in Howard County, and when

• Start tipping out standing water weekly by February 24.
• Book any yard treatment for early March, ahead of the July peak.
• Repellent can go away after November 21.
• No West Nile cases since 2016, so bites in Howard County are a nuisance; check window screens.

Howard County against the rest of AR

Howard County has the 24th longest season of 75 AR counties, at 256 days against 274 in Chicot County and 211 in Washington County. Its mean temperature is 62°F.

• Cross County: March 9 to November 20 (256 days, 0 WNV)
• St. Francis County: March 9 to November 20 (256 days, 0 WNV)
• Lonoke County: March 8 to November 18 (255 days, 2 WNV)
• Perry County: March 8 to November 18 (255 days, 1 WNV)

West Nile in Howard County

CDC ArboNET lists no human West Nile cases for Howard County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 3 of those years.

Background: when mosquitoes go away for the winter; how the dates are worked out.