Mosquito season in Mora County, NM: when it starts and ends

Mosquito months in Mora County

In a normal year mosquito season in Mora County, NM starts around May 11 and ends around October 3, about 21 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 Mora County, and when

• Start tipping out standing water weekly by April 27.
• Book any yard treatment for mid May, ahead of the July peak.
• Repellent can go away after October 3.
• 1 West Nile case since 2016 (last 2023): you should use repellent at dusk July, more so if over 60.

Mora County against the rest of NM

Mora County has the 28th longest season of 33 NM counties, at 145 days against 268 in Doña Ana County and 114 in Catron County. Its mean temperature is 47.5°F.

• Colfax County: May 5 to October 8 (156 days, 1 WNV)
• San Miguel County: May 10 to October 7 (150 days, 4 WNV)
• McKinley County: May 15 to October 3 (141 days, 3 WNV)
• Taos County: May 18 to October 3 (138 days, 14 WNV)

West Nile in Mora County

From 1999 to 2025, CDC ArboNET counted 1 human West Nile case in Mora County (1 neuroinvasive) across 1 year. The worst was 2023 with 1; the latest was 2023.

More: how the dates are worked out · when mosquitoes go away for the winter.