You know a race really matters when you start checking the weather as soon as it comes into the 10-day window on the weather websites. In 9 days I'll be running the Rocket City Marathon, and I've finally got a forecast for race day. Here it is:
The low temperature is deceiving because on Weather.com the low is forecast for the following night. The overnight low from the night before is currently forecast at 38 degrees, which should be close to the actual temperature when the race starts at 8 am. If everything goes as planned, I should be finishing a little after 11 am, and we shouldn't yet have reached the high for the day. I'd guess the temperature at the end of the race, assuming the forecast holds, would be in the high 40s.
Other than the rain and a light wind, the weather can't get much better than this. Assuming it's not a constant downpour, I'd take this weather for the race. But of course, we'll get a better sense of the weather for the race as race day gets closer.