Mosquito season in Gila County, AZ: when it starts and ends
Mosquito months in Gila County
In a normal year mosquito season in Gila County, AZ starts around February 2 and ends around December 7, about 44 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Gila County, and when
- Start tipping out standing water weekly by January 19.
- Book any yard treatment for early February, ahead of the July peak.
- Repellent can go away after December 7.
- 9 West Nile cases since 2016 (last 2024): you should use repellent at dusk May to September, more so if over 60.
Gila County against the rest of AZ
Gila County has the 5th longest season of 15 AZ counties, at 308 days against 364 in Maricopa County and 150 in Coconino County. Its mean temperature is 66.9°F.
- La Paz County: January 7 to December 21 (348 days, 2 WNV)
- Yuma County: January 23 to December 11 (322 days, 8 WNV)
- Santa Cruz County: February 23 to November 30 (280 days, 2 WNV)
- Pima County: March 6 to November 21 (260 days, 142 WNV)
West Nile in Gila County
From 1999 to 2025, CDC ArboNET counted 27 human West Nile cases in Gila County (17 neuroinvasive) across 11 years. The worst was 2010 with 9; the latest was 2024.
Background: reading the West Nile counts; how the dates are worked out.