Mosquito season in Banner County, NE: when it starts and ends
Mosquito months in Banner County
In a normal year mosquito season in Banner County, NE starts around May 12 and ends around September 29, about 20 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Banner County, and when
- Start tipping out standing water weekly by April 28.
- Book any yard treatment for mid May, ahead of the July peak.
- Repellent can go away after September 29.
- 1 West Nile case since 2016 (last 2016): you should use repellent at dusk July to July, more so if over 60.
Banner County against the rest of NE
Banner County has the 92nd longest season of 93 NE counties, at 140 days against 200 in Richardson County and 127 in Sioux County. Its mean temperature is 47.7°F.
- Kimball County: May 6 to October 6 (153 days, 2 WNV)
- Sheridan County: May 5 to October 4 (152 days, 5 WNV)
- Sioux County: May 17 to September 21 (127 days, 2 WNV)
West Nile in Banner County
From 1999 to 2025, CDC ArboNET counted 5 human West Nile cases in Banner County (2 neuroinvasive) across 5 years. The worst was 2016 with 1; the latest was 2016.
See how the dates are worked out, and when the season starts across the US.