I wouldn't worry too much about those numbers. Occasional systolic readings like that are fine. Your diastolic looks good. Age and weight can be a factor, as can anxiety. Are you an anxious person? Lay off the coffee if you drink alot of it and your number will probably come down.
I wouldn't worry about those numbers at all, well in the sense that what stophypertensio brought up is most likely causing the higher systolic. You know whats weird with me though? when i stress out my dystolic goes up, BUT if i'm exercising, beat red in the face , sweating and feel like my BP is up only my systolic is up! Like when i was working out i stopped and took it and it was like 155/73. I don't get it