Depending upon UC/CSU capped weighted GPA and major along with your ACT score, these will all contribute to your chances. Which CSU’s since there 23 campuses? Since you are OOS, only AP/IB or DE courses taken 10-11th will be weighted. OOS honors courses to not get the extra honirs weighting. UC’s are very GPA focused but to be competitive you will need to raise your ACT.
2017 data which shows UC Merced or Riverside are your targets with current ACT.
25th - 75th percentiles for ACT:
UCB: 30-34
UCLA: 30-34
UCSD: 29-34
UCSB: 28-33
UCD: 26-32
UCI: 26-32
UCSC: 26-31
UCR: 23-30
UCM: 20-27