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

Mosquito months in Dixon County

In a normal year mosquito season in Dixon County, NE starts around April 23 and ends around October 14, about 25 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 Dixon County, and when

• Start tipping out standing water weekly by April 9.
• Book any yard treatment for late April, ahead of the July peak.
• Repellent can go away after October 14.
• 3 West Nile cases since 2016 (last 2025): you should use repellent at dusk June to August, more so if over 60.

Dixon County against the rest of NE

Dixon County has the 59th longest season of 93 NE counties, at 174 days against 200 in Richardson County and 127 in Sioux County. Its mean temperature is 48.2°F.

• Cedar County: April 22 to October 15 (176 days, 4 WNV)
• Wheeler County: April 25 to October 17 (175 days, 0 WNV)
• Cherry County: April 24 to October 15 (174 days, 0 WNV)
• Perkins County: April 24 to October 15 (174 days, 11 WNV)

West Nile in Dixon County

From 1999 to 2025, CDC ArboNET counted 10 human West Nile cases in Dixon County (3 neuroinvasive) across 9 years. The worst was 2012 with 2; the latest was 2025.

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