Mosquito season in Cedar County, NE: when it starts and ends
Mosquito months in Cedar County
In a normal year mosquito season in Cedar County, NE starts around April 22 and ends around October 15, about 25 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Cedar County, and when
- Start tipping out standing water weekly by April 8.
- Book any yard treatment for late April, ahead of the July peak.
- Repellent can go away after October 15.
- 4 West Nile cases since 2016 (last 2022): you should use repellent at dusk July to August, more so if over 60.
Cedar County against the rest of NE
Cedar County has the 57th longest season of 93 NE counties, at 176 days against 200 in Richardson County and 127 in Sioux County. Its mean temperature is 47.8°F.
- Webster County: April 22 to October 16 (177 days, 2 WNV)
- Boone County: April 22 to October 15 (176 days, 7 WNV)
- Wheeler County: April 25 to October 17 (175 days, 0 WNV)
- Dixon County: April 23 to October 14 (174 days, 3 WNV)
West Nile in Cedar County
From 1999 to 2025, CDC ArboNET counted 19 human West Nile cases in Cedar County (6 neuroinvasive) across 10 years. The worst was 2013 with 6; the latest was 2022.
More: how the dates are worked out · reading the West Nile counts.