Appendix A to Part 110 - Climatic Zones Used To Determine Rates of Commutation Allowance

Appendix A to Part 110 - Climatic Zones Used To Determine Rates of Commutation Allowance

Zone I

1. Alabama

2. Arizona, only 100 mile-wide belt along south border

3. Arkansas, southern two-thirds

4. California, except area north of 37°

5. Florida

6. Georgia

7. Guam

8. Hawaii

9. Kentucky, southeastern one-third

10. Louisiana

11. Mississippi

12. New Mexico, only 100 mile-wide belt along south border

13. North Carolina

14. Oklahoma, only southeastern portion

15. Puerto Rico

16. South Carolina

17. Tennessee, except northwest corner

18. Texas, except area border of 34° north

Zone II

1. Alaska

2. Arizona, except 100 mile-wide belt along south border

3. Arkansas, northern one-third

4. California, area south of 37° north

5. Colorado

6. Connecticut

7. Delaware

8. District of Columbia

9. Idaho

10. Illinois

11. Indiana

12. Iowa

13. Kansas

14. Kentucky, NW two-thirds

15. Maine

16. Maryland

17. Massachusetts

18. Michigan

19. Minnesota

20. Missouri

21. Montana

22. Nebraska

23. Nevada

24. New Hampshire

25. New Jersey

26. New Mexico, except a 100 mile-wide belt along south border

27. New York

28. North Dakota

29. Ohio

30. Oklahoma, except the southeast portion

31. Oregon

32. Pennsylvania

33. Rhode Island

34. South Dakota

35. Tennessee, only the northwest corner

36. Texas, only area north of 34° north

37. Utah

38. Vermont

39. Virginia

40. Washington

41. West Virginia

42. Wisconsin

43. Wyoming

The climate zones listed above are to be used as a guide to determine clothing requirements for a specific detachment. Wind chill equivalent temperatures can vary widely for areas within close proximity to each other due to variations in wind velocity and elevation. Detachment commanders may request a zone change by submitting evidence to the Major Command of the appropriate Military Service that the wind chill equivalent temperature for the coldest month has been within the limits of the requested zone classification for the past 3 consecutive years.

Attachment to Appendix A to Part 110 - Climatic Zones Used To Determine Rates of Commutation Allowance (Formula)

The Standard and special commutation rates are based on the latest approved items of clothing for each climatic zone. The zones are:

Zone	Temperature range
1	32 degrees Fahrenheit and above.
2	Below 32 degrees Fahrenheit.

To determine the appropriate zone for each ROTC detachment, use the table below. Enter the appropriate dry bulb temperature at the top and read down. Find the wind velocity on the left and read across. The intersection of the two lines provides the equivalent temperature. For example, a combination of 20 degrees Fahrenheit and a 10 mile-per-hour wind has a wind chill equivalent temperature of 3 degrees Fahrenheit. The wind chill equivalent temperature is based on the average monthly temperature and wind of the coldest month for each of the past 3 consecutive years.