@gruecd, just to put some context to the below:
Try going faster than you're comfortable (MP plus 15-20 seconds) then see if you can lift the lid on your goal pace during the week.
Assume all speed workouts are 5K pace give or take
W1 - 3 at 'goal pace' (6:24), 12 long (7:17), 6x800
W2 - 4 at 'goal pace' (6:27), 13 long (7:23), 5x1K
W3 - 12 long (7:09), 4x1200, no pace run
W4 - The Grue hill/mile repeat workout, 11 long (7:21), no pace run
W5 - 5 at 'goal pace' (6:19), 14 long (7:20), no speed workout
W6 - 12 long (7:02), no speed nor pace workouts
W7 - 15 long (7:29), 6xmile, no pace run
W8 - 5 at 'goal pace' (6:16), 12 long (6:47!!!), no speed workout
W9 - 10K race
W10 - 4x1.5 mile, 14 long (6:58), no pace run
W11 - 7 pace (6:11!!!), 3x2 mile, 16 long (6:56)
W12 - 2x5K, higdon tempo in place of HMP, 14 long (6:48!!!) - last scheduled speed workout
W13 - 7 pace (6:03!!!), 17 long (6:47!!!)
W14 - 8+ pace (6:02!!!), 13 long (6:59), 17:18 5K
W15 - taper
W16 - race prep
^^^Clearly, that's not Hanson's. There's actually even more quality up there I didn't cite. But my point is its philosophies are sprinkled throughout. The reason I'm sharing is to not settle on goal paces, especially early in the cycle. Sure, weather conditions played a role in the improved performance, but if I'm not pushing myself to my limits weeks 1-8 then I'm not in position to accomplish what I did weeks 10-14. Do more than you're comfortable doing the first half. Reset. Then see if you can take it up a notch. If your body screams uncle then you went down swinging.
I don't think it will, but you have to get out of your comfort zone to find out. Go #### some #### up