A simpler way to get the information you're looking at would be this:

WITH CTE AS
(
SELECT EventDate,EventTime,Temp, rn=ROW_NUMBER() OVER (PARTITION BY EventDate ORDER BY Temp ASC, EventTime ASC)
FROM mytable --Change to your table name, of course
)

SELECT EventDate, EventTime, Temp
FROM CTE
WHERE rn=1;

Turning that into a view is as simple as adding the following line at the beginning:

CREATE VIEW myview AS --Again, change to the desired name for the view as necessary

Cheers!