C172 student pilot reported loss of control on landing due to gusty wind resulted in a runway excursion.

Narrative

Upon returning from a Solo Cross Country flight on landing the winds picked up slightly and were 180 @ 7 kts. at the time of the most recent METAR. Using Runway XX; this was a 30 degree left crosswind. However; I believe the winds picked up shortly after the METAR. I was coming into land on a stabilized approach using the PAPI's as my visual aid for landing. I touched down past the aiming point markings and floated for a few hundred feet. Upon touchdown; I experienced a gust of wind from the left that started to roll the aircraft to the right. I tried to correct with rudders back to the left however; I eventually veered just slightly off of the runway and slightly into the grass. The aicraft was completely undamaged; no runway lights were damaged; and I am completely fine. A report was filed.Corrective actions would be to remind yourself that the ATIS at a towered airport is just the winds at the reported time and is updated hourly. The weather information may be up to an hour old or just a few minutes old; however the wind sock will display instant up to date information on where the winds are coming from and generally how strong. Using the 'winglow' sideslip technique more effectively may help maintain centerline during the landing.