Asphalt installation and paving is a big job, so it's important to plan ahead. The best time to get asphalt installed and paved is in the fall or spring, when the weather is milder. That way, the asphalt has time to cure properly before winter sets in or the summer heat arrives. You'll also want to make sure that there's no rain in the forecast for at least a day or two after the asphalt is laid down to prevent wash aways..