Editor's note: This started out as a thread talking about the cold weather that will be at many regionals "Cold weather impact predictions on NCAA DI Regionals tomorrow?" but we are turning it into the official discussion thread.
It looks like four of the Regional races will be contested in below or around freezing conditions, per weatherunderground.com. How will that impact the outcome of the races tomorrow? I expect the fan attendance will be low, with those present being die-hard fans OR people who didn't check the weather ahead of time...
Northeast Region (Amherst, NY) - high 27 F, winds NW at 15 to 25 mph
10am - 23 F, wind NW 17 mph
11am - 23 F, wind NW 16 mph
noon - 24 F, wind NW 16mph
60% chance of precipitation (rain & snow) tonight
https://www.wunderground.com/hourly/us/ny/amherst/14226/date/2017-11-10?cm_ven=localwx_modtomorrow
Mid-Atlantic Region (Bethlehem, PA) - high 34 F, winds NNW 15 to 25 mph
10am - 33 F, wind NW 18mph
11am - 33 F, wind NW 18 mph
noon - 34 F, wind NW 18 mph
50% chance of rain tonight
https://www.wunderground.com/hourly/us/pa/bethlehem/18015/date/2017-11-10?cm_ven=localwx_modtomorrow
Great Lakes Region (Terre Haute, IN) - High 38F, winds NE at 5 to 10 mph
10am - 30 F, wind NE 10 mph
11am - 32 F, wind ENE 10 mph
noon - 34 F, wind ENE 9 mph
MidWest Region (Ames, IA) - High 34, Winds SE 10 to 20 mph
10am - 23 F, wind SE 12 mph
11am - 26 F, wind SE 13 mph
noon - 28 F, wind SE 14 mph
https://www.wunderground.com/hourly/us/ia/ames/50010/date/2017-11-10?cm_ven=localwx_modtomorrow
The other regions are expected to have high temperatures above 45 degrees F, per weatherunderground.com.