Weather Forecast: 3 Days Out

We're now firmly ensconced in the mid-80s as the Weather.com forecast temperature ticks up a couple in today's forecast. Just about everything else remains stable.

Date of Forecast	High	Low	Chance of Rain	Wind Speed	Description
9-Jun	79	63	0%	7 mph	"Abundant sunshine."
10-Jun	83	66	30%	6 mph	"Scattered thunderstorms possible."
11-Jun	84	67	30%	6 mph	"A few thunderstorms possible."
12-Jun	83	64	30%	8 mph	"Isolated thunderstorms."
13-Jun	78	63	20%	6 mph	"Mix of sun and clouds."
14-Jun	83	63	20%	8 mph	"More sun than clouds."
15-Jun	85	63	20%	6 mph	"Partly cloudy."
16-Jun
17-Jun

Weather Underground's forecast essentially duplicates Weather.com's for now, except that Weather Underground offers the optimistic "partly sunny" and Weather.com offers the pessimistic "partly cloudy." Strange. Is there a difference?

Date of Forecast	High	Low	Chance of Rain	Wind Speed	Description
12-Jun	81	61	20%	5 mph	"Partly sunny. Chance of thunderstorms."
13-Jun	81	61	20%	3 mph	"Partly sunny. A chance of showers and thunderstorms in the morning."
14-Jun	83	61	10%	4 mph	"Partly sunny. A chance of showers in the morning."
15-Jun	85	63	20%	6 mph	"Partly sunny."
16-Jun
17-Jun