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

Mosquito months in Lawrence County

In a normal year mosquito season in Lawrence County, AR starts around March 18 and ends around November 10, about 34 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 Lawrence County, and when

• Start tipping out standing water weekly by March 4.
• Book any yard treatment for mid March, ahead of the July peak.
• Repellent can go away after November 10.
• 2 West Nile cases since 2016 (last 2025): you should use repellent at dusk June to September, more so if over 60.

Lawrence County against the rest of AR

Lawrence County has the 55th longest season of 75 AR counties, at 237 days against 274 in Chicot County and 211 in Washington County. Its mean temperature is 58.8°F.

• Independence County: March 17 to November 12 (240 days, 1 WNV)
• Madison County: March 18 to November 11 (238 days, 0 WNV)
• Stone County: March 19 to November 11 (237 days, 0 WNV)
• Randolph County: March 19 to November 9 (235 days, 0 WNV)

West Nile in Lawrence County

From 1999 to 2025, CDC ArboNET counted 4 human West Nile cases in Lawrence County (3 neuroinvasive) across 3 years. The worst was 2025 with 2; the latest was 2025.

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