Mosquito season in Saline County, NE: when it starts and ends

Mosquito months in Saline County

In a normal year mosquito season in Saline County, NE starts around April 17 and ends around October 21, about 27 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 Saline County, and when

• Start tipping out standing water weekly by April 3.
• Book any yard treatment for mid April, ahead of the July peak.
• Repellent can go away after October 21.
• 3 West Nile cases since 2016 (last 2021): you should use repellent at dusk June to August, more so if over 60.

Saline County against the rest of NE

Saline County has the 26th longest season of 93 NE counties, at 187 days against 200 in Richardson County and 127 in Sioux County. Its mean temperature is 50.3°F.

• Polk County: April 16 to October 21 (188 days, 5 WNV)
• Johnson County: April 16 to October 20 (187 days, 0 WNV)
• Kearney County: April 16 to October 19 (186 days, 11 WNV)
• Seward County: April 16 to October 19 (186 days, 11 WNV)

West Nile in Saline County

From 1999 to 2025, CDC ArboNET counted 49 human West Nile cases in Saline County (11 neuroinvasive) across 12 years. The worst was 2003 with 19; the latest was 2021.

See how the dates are worked out, and when the season starts across the US.