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

Mosquito months in Montgomery County

In a normal year mosquito season in Montgomery County, AR starts around March 26 and ends around November 5, about 32 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 Montgomery County, and when

• Start tipping out standing water weekly by March 12.
• Book any yard treatment for late March, ahead of the July peak.
• Repellent can go away after November 5.
• No West Nile cases since 2016, so bites in Montgomery County are a nuisance; check window screens.

Montgomery County against the rest of AR

Montgomery County has the 65th longest season of 75 AR counties, at 224 days against 274 in Chicot County and 211 in Washington County. Its mean temperature is 60.3°F.

• Carroll County: March 26 to November 10 (229 days, 0 WNV)
• Sharp County: March 24 to November 7 (228 days, 1 WNV)
• Scott County: March 26 to November 5 (224 days, 0 WNV)
• Crawford County: March 28 to November 6 (223 days, 3 WNV)

West Nile in Montgomery County

CDC ArboNET lists no human West Nile cases for Montgomery County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 2 of those years.

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