Temperature has great effect on starting any vegetables seeds. The change in temperature alter the days a seed takes to germinate. So you must be aware what is an ideal temperature for starting any vegetables seeds. Here is handy chart of temperature variations effect on seed germination in terms of time.
Related: sprouting seeds and tips for storing seeds
For sowing indoor-Air temperature for hardening off
For directly sowing in the garden-the time it takes to germinate by soil temperature
I wish this were in Celsius as well…
You can write down the figures in Excel after converting each here : http://www.metric-conversions.org/temperature/fahrenheit-to-celsius.htm
for your convenience.