Mosquito season in Murray County, MN: when it starts and ends
Mosquito months in Murray County
In a normal year mosquito season in Murray County, MN starts around May 1 and ends around October 8, about 23 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Murray County, and when
- Start tipping out standing water weekly by April 17.
- Book any yard treatment for early May, ahead of the July peak.
- Repellent can go away after October 8.
- 8 West Nile cases since 2016 (last 2025): you should use repellent at dusk July to July, more so if over 60.
Murray County against the rest of MN
Murray County has the 46th longest season of 87 MN counties, at 160 days against 176 in Winona County and 118 in Cook County. Its mean temperature is 43.5°F.
- Renville County: April 30 to October 7 (161 days, 5 WNV)
- Kandiyohi County: April 30 to October 8 (160 days, 9 WNV)
- Grant County: May 1 to October 7 (159 days, 2 WNV)
- Stevens County: May 1 to October 6 (159 days, 3 WNV)
West Nile in Murray County
From 1999 to 2025, CDC ArboNET counted 17 human West Nile cases in Murray County (6 neuroinvasive) across 11 years. The worst was 2012 with 3; the latest was 2025.
More: how the dates are worked out · reading the West Nile counts.