How long after a strawberry turns red is it good to eat?

I bought a strawberry plant a week and a half ago and one of the green berries turned red today. How long until its good to be plucked and eaten? Also its really tiny so will it get much bigger?

Here s my weather forecast in case it helps.

Apr 1. 76/59 Rain
Apr 2. 69/54 Thunderstorm
Apr 3. 77/54 P. Cloudy
Apr 4. 82/53 Sunny
Apr 5. 67/46 Cloudy

With warm days, cool nights and a mix of humidity plus sunshine, how long can I expect?