How common is humid heat vs dry heat?

Kaleetan Cheeseman Plots for Madison, for June/July/August

*Tagging Cheeseman in case he's interested, he's also near Madison

June

(For around the monthly mean max, 88°F which roughly translates to 90°F highs)

99th percentile: ~77°F
90th percentile: ~74°F
75th percentile: ~71°F
Mean: ~68°F
25th percentile: ~63°F
10th percentile: ~57°F
1st percentile: ~48°F (extrapolating a bit, could be a little off)

(Near the average high, 76°F)

90th percentile: ~69°F
Mean: ~61°F
10th percentile: ~49°F



July

(For around the monthly mean max, 90°F which roughly translates to 92°F highs)

99th percentile: ~79°F
90th percentile: ~75°F
75th percentile: ~73°F
Mean: ~70°F
25th percentile: ~67°F
10th percentile: ~64°F
1st percentile: ~55°F

(Near the average high, 80°F)

90th percentile: ~72°F
Mean: ~65°F
10th percentile: ~55°F



August

(For around the monthly mean max, 87-88°F which roughly translates to 90°F highs)

99th percentile: ~78°F
90th percentile: ~74°F
75th percentile: ~71°F
Mean: ~68°F
25th percentile: ~65°F
10th percentile: ~62°F
1st percentile: ~53°F

(Near the average high, 79°F)

90th percentile: ~71°F
Mean: ~64°F
10th percentile: ~54°F



Like the previous plots I made, I use dry-bulb temps a couple of °F below the respective average highs/monthly mean max highs, as that appears to be the typical difference between average warmest hourly temp, and the instantaneous daily high.