Seems like it might be a good time to go into the air conditioner repair business.
In 2015, the average global temperature, according to the NASA Goddard Institute for Space Sciences (GISS) data analysis, was the warmest on record, handily besting the previous mark which was set way back in 2014.
There is unambiguous evidence that climate change, driven by increasing atmospheric CO2 concentration (as well as other greenhouse gases), is responsible for the relentless upward trend. Nonetheless, stochastic variations do lend a short-term veneer of unpredictability to near-term measurements.
A recently closed Metaculus question that asked whether 2016 will break the global heat record was quite popular -- 742 predictions were registered, ascribing an 85% chance of going over the top. Given the interest, it seems reasonable to roll the question out for the coming year:
Will 2017 again set a new record? Or will it fall off the recent record-setting pace?
This will resolve in the positive if the NASA GISS global average temperature for 2017 is published above that of any prior year for which records exist. As a practical matter, this will be either 2015 or (likely) 2016.