Most items are not heat sensitive and can ship anytime.  

High Temperature Maps

See Also: 1. Heat Sensitive 2. Heat Maps 3. Ship Time 4. Cool Shipping

From the top of Ohio (Detroit) To __?   High Temperature maps:

Accuweather.com: USA Tomorrow . Day 3 . D 4 . D 5 . D 6 . D 7 . D 8 . D 9 . D 10

US National Weather Service: Day 3 . D 4 . D5 . D6 . D7 . Click City For Probabilities
       
World: Select Region (then Country) and Day. Weather.gov Mouse over for a week
Weather.com: USA Tomorrow . Day 3 . Day 4 . Day 5 . Day 6 . D 7 . D 8 . D 9 . D 10

See Also: 1. Heat Sensitives 2. Heat Maps 3. Ship Time 4. Cool shipping