Patent Cooperation Treaty

Friday, June 19, 1970Washington, D.C., United States

grey 10am–3pm87°F

Warm and sticky in the small hours, the air near 79°F and clear until cloud drifted over before dawn. The sun burned it off soon after sunrise. Heat came on fast after that, near 87° by noon with the humidity dropping as a west wind rose, stiff gusts through the afternoon under cloud that came and went. Evening cleared and the wind eased. The air settled warm and dry by midnight.

Humidity
57%
Wind
14 mph
Daylight
14.9 hrs
Day's character
partly cloudy
High / Low
90° / 71°F
Felt like
88° / 74°F
Rain
0.00"
Snowfall
0.0"
Pressure
29.80 inHg
Gusting to
23 mph
Wind from
northwest
Sunrise / Sunset
5:42 am / 8:36 pm

Pre-satellite record — solid, not exact. From the Washington D C Washngtn-Hoove station, 3 mi away.

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