Mosquito season in Sargent County, ND: when it starts and ends
Mosquito months in Sargent County
In a normal year mosquito season in Sargent County, ND starts around May 3 and ends around October 4, about 22 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Sargent County, and when
- Start tipping out standing water weekly by April 19.
- Book any yard treatment for early May, ahead of the July peak.
- Repellent can go away after October 4.
- 8 West Nile cases since 2016 (last 2024): you should use repellent at dusk July to July, more so if over 60.
Sargent County against the rest of ND
Sargent County has the 11th longest season of 53 ND counties, at 153 days against 160 in Sheridan County and 135 in Rolette County. Its mean temperature is 41.5°F.
- Emmons County: May 3 to October 4 (154 days, 4 WNV)
- Burleigh County: May 4 to October 4 (154 days, 128 WNV)
- Ransom County: May 4 to October 3 (153 days, 4 WNV)
- Oliver County: May 4 to October 3 (152 days, 1 WNV)
West Nile in Sargent County
From 1999 to 2025, CDC ArboNET counted 36 human West Nile cases in Sargent County (7 neuroinvasive) across 13 years. The worst was 2003 with 14; the latest was 2024.
More: how the dates are worked out · reading the West Nile counts.