Mosquito season in McIntosh County, ND: when it starts and ends
Mosquito months in McIntosh County
In a normal year mosquito season in McIntosh County, ND starts around May 7 and ends around October 2, about 21 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in McIntosh County, and when
- Start tipping out standing water weekly by April 23.
- Book any yard treatment for early May, ahead of the July peak.
- Repellent can go away after October 2.
- 4 West Nile cases since 2016 (last 2025): you should use repellent at dusk July, more so if over 60.
McIntosh County against the rest of ND
McIntosh County has the 31st longest season of 53 ND counties, at 148 days against 160 in Sheridan County and 135 in Rolette County. Its mean temperature is 41.3°F.
- Bottineau County: May 5 to September 30 (148 days, 6 WNV)
- Foster County: May 6 to October 1 (148 days, 3 WNV)
- Griggs County: May 7 to October 1 (147 days, 6 WNV)
- Stark County: May 8 to October 2 (147 days, 21 WNV)
West Nile in McIntosh County
From 1999 to 2025, CDC ArboNET counted 16 human West Nile cases in McIntosh County (6 neuroinvasive) across 8 years. The worst was 2003 with 4; the latest was 2025.
More: how the dates are worked out · reading the West Nile counts.