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

Mosquito months in Little River County

In a normal year mosquito season in Little River County, AR starts around March 11 and ends around November 21, about 36 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 Little River 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 21.
• 1 West Nile case since 2016 (last 2016): you should use repellent at dusk May to September, more so if over 60.

Little River County against the rest of AR

Little River County has the 28th longest season of 75 AR counties, at 255 days against 274 in Chicot County and 211 in Washington County. Its mean temperature is 63.2°F.

• Perry County: March 8 to November 18 (255 days, 1 WNV)
• Pulaski County: March 8 to November 18 (255 days, 22 WNV)
• Saline County: March 9 to November 18 (254 days, 6 WNV)
• Dallas County: March 10 to November 17 (252 days, 3 WNV)

West Nile in Little River County

From 1999 to 2025, CDC ArboNET counted 3 human West Nile cases in Little River County (2 neuroinvasive) across 3 years. The worst was 2016 with 1; the latest was 2016.

See how the dates are worked out, and when mosquitoes go away for the winter.