Dry Bulb
Temp
(°C )
Table of Dewpoint as a Function of Dry Bulb and Relative Humidity
Relative Humidity (%)
36
38
40
42
44
46
48
50
55
60
65
70
75
80
85
90
95
100
-20
-31.7
-31.1
-30.5
-30.0
-29.5
-29.0
-28.5
-28.1
-27.0
-26.0
-25.1
-24.3
-23.5
-22.8
-22.1
-21.4
-20.7
-20
-19
-30.7
-30.2
-29.6
-29.1
-28.5
-28.1
-27.6
-27.1
-26.1
-25.1
-24.2
-23.3
-22.5
-21.8
-21.0
-20.4
-19.7
-19
-18
-29.8
-29.2
-28.7
-28.1
-27.6
-27.1
-26.6
-26.2
-25.1
-24.1
-23.2
-22.3
-21.5
-20.8
-20.0
-19.4
-18.7
-18
-17
-28.9
-28.3
-27.7
-27.2
-26.7
-26.2
-25.7
-25.2
-24.1
-23.1
-22.2
-21.3
-20.5
-19.8
-19.0
-18.4
-17.7
-17
-16
-28.0
-27.4
-26.8
-26.2
-25.7
-25.2
-24.7
-24.3
-23.2
-22.2
-21.2
-20.4
-19.5
-18.8
-18.0
-17.4
-16.7
-16
-15
-27.0
-26.4
-25.9
-25.3
-24.8
-24.3
-23.8
-23.3
-22.2
-21.2
-20.3
-19.4
-18.6
-17.8
-17.0
-16.4
-15.7
-15
-14
-26.1
-25.5
-24.9
-24.4
-23.8
-23.3
-22.8
-22.4
-21.3
-20.2
-19.3
-18.4
-17.6
-16.8
-16.1
-15.4
-14.7
-14
-13
-25.2
-24.6
-24.0
-23.4
-22.9
-22.4
-21.9
-21.4
-20.3
-19.3
-18.3
-17.4
-16.6
-15.8
-15.1
-14.3
-13.7
-13
-12
-24.3
-23.7
-23.1
-22.5
-22.0
-21.5
-21.0
-20.5
-19.3
-18.3
-17.3
-16.4
-15.6
-14.8
-14.1
-13.3
-12.7
-12
-11
-23.4
-22.7
-22.1
-21.6
-21.0
-20.5
-20.0
-19.5
-18.4
-17.3
-16.4
-15.5
-146
-13.8
-13.1
-12.3
-11.7
-11
-10
-22.5
-21.8
-21.2
-20.6
-20.1
-19.6
-19.1
-18.6
-17.4
-16.4
-15.4
-14.5
-13.6
-12.8
-12.1
-11.3
-10.7
-10
-9
-21.5
-20.9
-20.3
-19.7
-19.2
-18.6
-18.1
-17.6
-16.5
-15.4
-14.4
-13.5
-12.7
-11.8
-11.1
-10.3
-9.7
-9
-8
-20.6
-20.0
-19.4
-18.8
-18.2
-17.7
-17.2
-16.7
-15.5
-14.5
-13.5
-12.5
-11.7
-10.9
-10.1
-9.3
-8.7
-8
-7
-19.7
-19.1
-18.5
-17.9
-17.3
-16.8
-16.2
-15.8
-14.6
-13.5
-12.5
-11.6
-10.7
-9.9
-9.1
-8.3
-7.6
-7
-6
-18.8
-18.1
-17.5
-16.9
-16.4
-15.8
-15.3
-14.8
-13.6
-12.5
-11.5
-10.6
-9.7
-8.9
-8.1
-7.4
-6.6
-6
-5
-17.9
-17.2
-16.6
-16.0
-15.4
-14.9
-14.4
-13.9
-12.7
-11.6
-10.6
-9.6
-8.7
-7.9
-7.1
-6.4
-5.6
-5
-4
-17.0
-16.3
-15.7
-15.1
-14.5
-14.0
-13.4
-12.9
-11.7
-10.6
-9.6
-8.6
-7.8
-6.9
-6.1
-5.4
-4.6
-4
-3
-16.1
-15.4
-14.8
-14.2
-13.6
-13.0
-12.5
-12.0
-10.8
-9.7
-8.6
-7.7
-6.8
-5.9
-5.1
-4.4
-3.6
-3
-2
-15.2
-14.5
-13.9
-13.2
-12.7
-12.1
-11.6
-11.1
-9.8
-8.7
-7.7
-6.7
-5.8
-4.9
-4.1
-3.4
-2.6
-2
-1
-14.2
-13.6
-12.9
-12.3
-11.7
-11.2
-10.6
-10.1
-8.9
-7.8
-6.7
-5.7
-4.8
-4.0
-3.1
-2.4
-1.6
-1
0
-13.3
-12.7
-12.0
-11.4
-10.8
-10.2
-9.7
-9.2
-7.9
-6.8
-5.8
-4.8
-3.9
-3.0
-2.2
-1.4
-0.6
0
1
-12.4
-11.8
-11.1
-10.5
-9.9
-9.3
-8.8
-8.2
-7.0
-5.9
-4.8
-3.8
-2.9
-2.0
-1.2
-0.4
0.4
1
2
-11.5
-10.8
-10.2
-9.6
-9.0
-8.4
-7.8
-7.3
-6.1
-4.9
-3.8
-2.8
-1.9
-1.0
-0.2
0.6
1.4
2
3
-10.6
-9.9
-9.3
-8.7
-8.0
-7.5
-6.9
-6.4
-5.1
-4.0
-2.9
-1.9
-0.9
0.0
0.8
1.6
2.3
3
4
-9.7
-9.0
-8.4
-7.7
-7.1
-6.5
-6.0
-5.4
-4.2
-3.0
-1.9
-0.9
0.0
0.9
1.8
2.6
3.3
4
5
-8.8
-8.1
-7.5
-6.8
-6.2
-5.6
-5.1
-4.5
-3.2
-2.1
-1.0
0.1
1.0
1.9
2.8
3.6
4.3
5
6
-7.9
-7.2
-6.6
-5.9
-5.3
-4.7
-4.1
-3.6
-2.3
-1.1
0.0
1.0
2.0
2.9
3.7
4.6
5.3
6
7
-7.0
-6.3
-5.6
-5.0
-4.4
-3.8
-3.2
-2.7
-1.4
-0.2
0.9
2.0
2.9
3.9
4.7
5.5
6.3
7
8
-6.1
-5.4
-4.7
-4.1
-3.5
-2.9
-2.3
-1.7
-0.4
0.8
1.9
2.9
3.9
4.8
5.7
6.5
7.3
8
9
-5.2
-4.5
-3.8
-3.2
-2.5
-1.9
-1.4
-0.8
0.5
1.7
2.8
3.9
4.9
5.8
6.7
7.5
8.3
9
10
-4.3
-3.6
-2.9
-2.3
-1.6
-1.0
-0.4
0.1
1.4
2.7
3.8
4.9
5.8
6.8
7.7
8.5
9.3
10
11
-3.4
-2.7
-2.0
-1.4
-0.7
-0.1
0.5
1.1
2.4
3.6
4.8
5.8
6.8
7.8
8.6
