Mosquito season in Jasper County, TX: when it starts and ends
Mosquito months in Jasper County
In a normal year mosquito season in Jasper County, TX starts around February 19 and ends around January 3, about 45 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Jasper County, and when
- Start tipping out standing water weekly by February 5.
- Book any yard treatment for mid February, ahead of the August peak.
- Repellent can go away after January 3.
- 1 West Nile case since 2016 (last 2025): you should use repellent at dusk May to September, more so if over 60.
Jasper County against the rest of TX
Jasper County has the 44th longest season of 254 TX counties, at 318 days against 365 in Cameron County and 191 in Lipscomb County. Its mean temperature is 66.8°F.
- Milam County: February 23 to January 12 (323 days, 1 WNV)
- Tyler County: February 19 to January 6 (321 days, 1 WNV)
- Maverick County: January 31 to December 14 (317 days, 0 WNV)
- Hardin County: February 5 to December 16 (314 days, 0 WNV)
West Nile in Jasper County
From 1999 to 2025, CDC ArboNET counted 2 human West Nile cases in Jasper County (2 neuroinvasive) across 2 years. The worst was 2025 with 1; the latest was 2025.
Background: when the season starts across the US; how the dates are worked out.