SET DATEFIRST 1; -- first day of the week is a Monday

DECLARE @monthINT = 10;

DECLARE @yearINT = 2013;

-- Tally table of 7 rows

WITH CTE_Tally AS

(

SELECT 0 AS Number

UNION ALL

SELECT 1

UNION ALL

SELECT 2

UNION ALL

SELECT 3

UNION ALL

SELECT 4

UNION ALL

SELECT 5

UNION ALL

SELECT 6

)

SELECT resultdate = dates

FROM

(

SELECT dates, RID = ROW_NUMBER() OVER (ORDER BY dates)

FROM

(

SELECT dates = DATEADD(dd,Number,DATEFROMPARTS(@year,@month,1))

FROM CTE_Tally

) tmp

WHERE DATEPART(weekday,dates) NOT IN (6,7) -- filter out saturday and sunday

) tmp2

WHERE RID = 5;

I used the function DATEFROMPARTS, which is only available from SQL Server 2012. Since you posted this question in a SQL 2014 forum, I assume that won't be a problem.