This graph from the US Centers for Disease Control and Prevention gives a clear picture of what’s ahead for summer: plenty of potential for tick bites transmitting Lyme (and other nasties).
You cannot be too careful; there’s no such thing. A friend told me the other day that his mom’s hairdresser found a tick in her hair. Thankfully it had not bitten her yet.
She has an indoor cat and doesn’t generally spend much time off sidewalks, so you can see that this health threat can be tough to avoid.
I’ve heard that 50% of ticks around here are infected. The odds are not good. We’ve got to be vigilant all year long, even in winter, but never more than in May thru August.