Yes, you can, just not within the Meraki Dashboard webpage. You'll need to use the Meraki API with something like the Meraki Python library to write your own script to do this. I'm finishing up my own Python script to do this right now. Yes, it's annoying that this isn't currently exposed within the Meraki GUI, but it is totally doable.
Start here (https://developer.cisco.com/meraki/api/#/python/getting-started) to learn about accessing the API. Specifically, follow this link to go through Meraki's API tutorial (https://learninglabs.cisco.com/modules/getting-started-with-meraki/meraki-02-dashboard-api/step/1). There are other tools out there to access the Meraki API, but the Meraki python library is by FAR the most mature.
The relevant Meraki python module functions are:
getssidl3fwrules(apikey, networkid, ssidnum, suppressprint=False)
updatessidl3fwrules(apikey, networkid, ssidnum, fwrules, suppressprint=False)
getssids(apikey, networkid, suppressprint=False)
getssiddetail(apikey, networkid, ssidnum, suppressprint=False)
updatessid(apikey, networkid, ssidnum, name, enabled, authmode, encryptionmode, psk, suppressprint=False)
updatessidobject(apikey, networkid, newssid, suppressprint=False)