Intermittent A/C not blowing

About a week ago I turned on my 2009 Prius to find the A/C wasn't blowing. It's usually ice cold, but there was no air movement at all. The was a huge disappointment as its been upwards of 90 degrees for the last few months here in Georgia. I came back a few minutes later and turned the car on again and the A/C was back blowing and cold.

It worked fine up until a few days ago my girlfriend and I had taken a trip to TN for a music festival, and Saturday morning on the way to the event, upon turning the car on the A/C did not blow, but after going down the road a few minutes it came on. It worked fine the next day and all the way back to GA, about a four hour drive. I dropped my girlfriend of and walked in here house for a minute, came back on toe finish the journey and the A/C did not blow again. The issue has persisted until this morning, which it began last night.

As the A/C is cold when it does blow I don't believe this to be a cooling issue but an issue with the blower. Would the blower go in and out like that prior to going out completely? I've also read that the heat can cause the inverter to over heat and not engage the blower. any thoughts on troubleshooting steps? Or should I go ahead and purchase the blower, as I'm not sure how long I can survive in this Georgia heat.

to recap:

A/C blows cold when it does
Air flow has been intermittently cutting out starting a week ago.

 

update: On the way home last night the A/C did not blow, nor did it when I got up to go to the gym this morning. After driving for a few minutes on my way to work, I shut off my car and turned it back on and the A/C began blowing and cold at that point. Any thoughts On what my be causing this would be helpful

 

thanks everyone! I'm going to take another look at it early in the week and if it seems to be the blower I'll get that replaced. It was working for about four days then two nights ago it failed and hasn't came back on since. From what I see replacing the blower motor is a simple fix

 

So based on this advice, I removed the glove compartment and cabin filter try and was able to get the fan to spin with my hand, started blowing right away. So I'll be ordering a new blower motor today and installing it next week. I'll probably just keep the glove box out to get it started that way until I replace the part as its still 90 degrees in Georgia in October for some reason. Thanks! I'll report back if that is the fix.