Temperature drop...

The end of summer is coming quickly to our area. In the evening it is no longer comfortable to be outside in shorts and a tee shirt. I haven't checked the temperature at night but I am sure it is a good 10-20 degrees colder than it has been. I need to take a minute and search around online for a good remote thermometer for my greenhouse. Finding the time to search for or even follow a link directing me click here for outdoor thermometers has just not been in my schedule. I am going to have to find a remote thermometer because it will allow me to know when I need to ventilate or close up our greenhouse. Thus far we have gotten lucky because the temperature have remained stable. With these wild temperature fluctuations the plants in the greenhouse are most likely to die from the shock or excessive cold and heat.