Mosquito season in Towner County, ND: when it starts and ends
Mosquito months in Towner County
In a normal year mosquito season in Towner County, ND starts around May 12 and ends around September 26, about 20 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Towner 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 26.
- No West Nile cases since 2016, so bites in Towner County are a nuisance; check window screens.
Towner County against the rest of ND
Towner County has the 51st longest season of 53 ND counties, at 137 days against 160 in Sheridan County and 135 in Rolette County. Its mean temperature is 37.3°F.
- Burke County: May 10 to September 25 (138 days, 2 WNV)
- Cavalier County: May 11 to September 26 (138 days, 1 WNV)
- Adams County: May 13 to September 27 (137 days, 1 WNV)
- Rolette County: May 13 to September 25 (135 days, 0 WNV)
West Nile in Towner County
From 1999 to 2025, CDC ArboNET counted 5 human West Nile cases in Towner County (0 neuroinvasive) across 4 years. The worst was 2003 with 2; the latest was 2011.
See how the dates are worked out, and when the season starts across the US.